/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-25.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:15:25,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:15:25,427 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 16:15:25,429 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:15:25,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:15:25,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:15:25,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:15:25,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:15:25,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:15:25,459 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:15:25,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:15:25,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:15:25,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:15:25,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:15:25,461 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:15:25,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:15:25,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:15:25,462 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:15:25,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:15:25,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:15:25,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:15:25,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:15:25,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:15:25,463 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:15:25,463 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:15:25,464 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:15:25,464 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:15:25,464 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:15:25,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:15:25,464 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:15:25,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:15:25,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:15:25,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:15:25,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:15:25,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:15:25,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:15:25,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:15:25,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:15:25,466 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:15:25,466 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:15:25,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:15:25,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:15:25,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:15:25,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:15:25,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:15:25,467 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:15:25,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:15:25,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:15:25,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:15:25,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:15:25,670 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:15:25,670 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:15:25,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-25.i [2023-12-24 16:15:26,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:15:26,851 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:15:26,852 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-25.i [2023-12-24 16:15:26,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4107e1c2/760d60169b4d42279296e2b4f29e7df7/FLAG2080206d9 [2023-12-24 16:15:26,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4107e1c2/760d60169b4d42279296e2b4f29e7df7 [2023-12-24 16:15:26,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:15:26,877 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:15:26,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:15:26,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:15:26,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:15:26,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:15:26" (1/1) ... [2023-12-24 16:15:26,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638ba343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:26, skipping insertion in model container [2023-12-24 16:15:26,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:15:26" (1/1) ... [2023-12-24 16:15:26,912 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:15:27,030 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-25.i[916,929] [2023-12-24 16:15:27,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:15:27,105 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:15:27,117 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-25.i[916,929] [2023-12-24 16:15:27,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:15:27,165 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:15:27,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27 WrapperNode [2023-12-24 16:15:27,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:15:27,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:15:27,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:15:27,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:15:27,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,228 INFO L138 Inliner]: procedures = 36, calls = 189, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 592 [2023-12-24 16:15:27,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:15:27,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:15:27,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:15:27,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:15:27,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,250 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,278 INFO L175 MemorySlicer]: Split 146 memory accesses to 15 slices as follows [2, 7, 6, 10, 10, 8, 8, 12, 9, 26, 16, 5, 9, 8, 10]. 18 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 19 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 3, 1, 1]. [2023-12-24 16:15:27,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:15:27,350 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:15:27,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:15:27,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:15:27,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (1/1) ... [2023-12-24 16:15:27,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:15:27,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:15:27,405 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 16:15:27,430 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 16:15:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:15:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:15:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:15:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:15:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:15:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:15:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:15:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:15:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:15:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:15:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:15:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:15:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:15:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2023-12-24 16:15:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#13 [2023-12-24 16:15:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#14 [2023-12-24 16:15:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 16:15:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 16:15:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 16:15:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 16:15:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 16:15:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 16:15:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 16:15:27,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 16:15:27,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 16:15:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 16:15:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 16:15:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-24 16:15:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#12 [2023-12-24 16:15:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#13 [2023-12-24 16:15:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#14 [2023-12-24 16:15:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:15:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#13 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#14 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 16:15:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#12 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#13 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#14 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 16:15:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 16:15:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 16:15:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-24 16:15:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2023-12-24 16:15:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2023-12-24 16:15:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2023-12-24 16:15:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#11 [2023-12-24 16:15:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#12 [2023-12-24 16:15:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#13 [2023-12-24 16:15:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#14 [2023-12-24 16:15:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 16:15:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 16:15:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 16:15:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 16:15:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 16:15:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 16:15:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 16:15:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 16:15:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 16:15:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 16:15:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#13 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#14 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 16:15:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 16:15:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 16:15:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 16:15:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 16:15:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-24 16:15:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#12 [2023-12-24 16:15:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#13 [2023-12-24 16:15:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#14 [2023-12-24 16:15:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 16:15:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 16:15:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 16:15:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 16:15:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 16:15:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 16:15:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 16:15:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-24 16:15:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2023-12-24 16:15:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2023-12-24 16:15:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2023-12-24 16:15:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#11 [2023-12-24 16:15:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#12 [2023-12-24 16:15:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#13 [2023-12-24 16:15:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#14 [2023-12-24 16:15:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 16:15:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 16:15:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 16:15:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 16:15:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 16:15:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 16:15:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 16:15:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-24 16:15:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2023-12-24 16:15:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2023-12-24 16:15:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2023-12-24 16:15:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#11 [2023-12-24 16:15:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#12 [2023-12-24 16:15:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#13 [2023-12-24 16:15:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#14 [2023-12-24 16:15:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:15:27,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:15:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:15:27,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:15:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:15:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:15:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:15:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:15:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:15:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:15:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:15:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:15:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:15:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:15:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:15:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:15:27,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2023-12-24 16:15:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#13 [2023-12-24 16:15:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#14 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 16:15:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#12 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#13 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#14 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 16:15:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 16:15:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-24 16:15:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-24 16:15:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#12 [2023-12-24 16:15:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#13 [2023-12-24 16:15:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#14 [2023-12-24 16:15:27,707 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:15:27,709 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:15:28,289 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:15:28,376 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:15:28,376 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:15:28,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:15:28 BoogieIcfgContainer [2023-12-24 16:15:28,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:15:28,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:15:28,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:15:28,380 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:15:28,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:15:26" (1/3) ... [2023-12-24 16:15:28,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c6463f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:15:28, skipping insertion in model container [2023-12-24 16:15:28,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:15:27" (2/3) ... [2023-12-24 16:15:28,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c6463f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:15:28, skipping insertion in model container [2023-12-24 16:15:28,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:15:28" (3/3) ... [2023-12-24 16:15:28,382 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-25.i [2023-12-24 16:15:28,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:15:28,393 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:15:28,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:15:28,434 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;@644fd798, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:15:28,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:15:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 97 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 16:15:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 16:15:28,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:28,449 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:28,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:28,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash 581055530, now seen corresponding path program 1 times [2023-12-24 16:15:28,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:28,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032950165] [2023-12-24 16:15:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:28,467 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 16:15:28,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:28,474 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 16:15:28,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 16:15:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:28,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:15:28,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-24 16:15:28,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:15:28,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:28,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032950165] [2023-12-24 16:15:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032950165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:15:28,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:15:28,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:15:28,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571992784] [2023-12-24 16:15:28,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:28,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:15:28,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:15:28,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:15:28,941 INFO L87 Difference]: Start difference. First operand has 117 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 97 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 16:15:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:28,988 INFO L93 Difference]: Finished difference Result 231 states and 368 transitions. [2023-12-24 16:15:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:15:28,991 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2023-12-24 16:15:28,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:28,995 INFO L225 Difference]: With dead ends: 231 [2023-12-24 16:15:28,995 INFO L226 Difference]: Without dead ends: 115 [2023-12-24 16:15:28,998 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 16:15:29,000 INFO L413 NwaCegarLoop]: 167 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, 167 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 16:15:29,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:15:29,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-24 16:15:29,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-24 16:15:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 95 states have internal predecessors, (135), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 16:15:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 171 transitions. [2023-12-24 16:15:29,045 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 171 transitions. Word has length 139 [2023-12-24 16:15:29,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:29,045 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 171 transitions. [2023-12-24 16:15:29,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 16:15:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 171 transitions. [2023-12-24 16:15:29,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 16:15:29,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:29,048 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:29,060 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 16:15:29,259 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 16:15:29,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:29,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1754928266, now seen corresponding path program 1 times [2023-12-24 16:15:29,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:29,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130225273] [2023-12-24 16:15:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:29,262 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 16:15:29,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:29,263 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 16:15:29,266 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 16:15:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:29,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:15:29,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:30,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:30,294 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 16:15:30,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 16:15:30,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:15:30,726 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:15:30,727 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 30 treesize of output 25 [2023-12-24 16:15:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-12-24 16:15:30,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:30,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130225273] [2023-12-24 16:15:30,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130225273] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:15:30,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:15:30,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 23 [2023-12-24 16:15:30,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702935515] [2023-12-24 16:15:30,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:30,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:15:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:15:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:15:30,907 INFO L87 Difference]: Start difference. First operand 115 states and 171 transitions. Second operand has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:15:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:31,425 INFO L93 Difference]: Finished difference Result 351 states and 517 transitions. [2023-12-24 16:15:31,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:15:31,426 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 139 [2023-12-24 16:15:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:31,428 INFO L225 Difference]: With dead ends: 351 [2023-12-24 16:15:31,428 INFO L226 Difference]: Without dead ends: 237 [2023-12-24 16:15:31,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 255 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:15:31,430 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 888 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:31,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 465 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:15:31,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-24 16:15:31,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 121. [2023-12-24 16:15:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 100 states have (on average 1.4) internal successors, (140), 100 states have internal predecessors, (140), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 16:15:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 176 transitions. [2023-12-24 16:15:31,446 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 176 transitions. Word has length 139 [2023-12-24 16:15:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:31,446 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 176 transitions. [2023-12-24 16:15:31,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:15:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 176 transitions. [2023-12-24 16:15:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 16:15:31,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:31,448 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:31,456 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 16:15:31,656 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 16:15:31,656 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:31,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:31,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1441655351, now seen corresponding path program 1 times [2023-12-24 16:15:31,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:31,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306490034] [2023-12-24 16:15:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:31,658 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 16:15:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:31,659 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 16:15:31,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 16:15:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:32,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:15:32,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:32,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-12-24 16:15:32,547 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 16:15:32,643 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 18 treesize of output 10 [2023-12-24 16:15:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 16:15:32,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:15:32,950 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:15:32,951 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 30 treesize of output 25 [2023-12-24 16:15:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-12-24 16:15:33,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306490034] [2023-12-24 16:15:33,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306490034] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:15:33,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:15:33,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 23 [2023-12-24 16:15:33,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484858949] [2023-12-24 16:15:33,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:33,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:15:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:33,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:15:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:15:33,120 INFO L87 Difference]: Start difference. First operand 121 states and 176 transitions. Second operand has 13 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:15:33,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:33,635 INFO L93 Difference]: Finished difference Result 386 states and 565 transitions. [2023-12-24 16:15:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:15:33,636 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 140 [2023-12-24 16:15:33,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:33,637 INFO L225 Difference]: With dead ends: 386 [2023-12-24 16:15:33,637 INFO L226 Difference]: Without dead ends: 266 [2023-12-24 16:15:33,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 257 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 16:15:33,639 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1489 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:33,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 497 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:15:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-24 16:15:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 140. [2023-12-24 16:15:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 119 states have (on average 1.4201680672268908) internal successors, (169), 119 states have internal predecessors, (169), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 16:15:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 205 transitions. [2023-12-24 16:15:33,651 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 205 transitions. Word has length 140 [2023-12-24 16:15:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:33,652 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 205 transitions. [2023-12-24 16:15:33,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:15:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 205 transitions. [2023-12-24 16:15:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 16:15:33,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:33,653 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:33,662 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 (4)] Ended with exit code 0 [2023-12-24 16:15:33,861 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 16:15:33,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:33,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:33,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1721054565, now seen corresponding path program 1 times [2023-12-24 16:15:33,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:33,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961957755] [2023-12-24 16:15:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:33,863 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 16:15:33,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:33,864 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 16:15:33,903 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 16:15:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:34,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:15:34,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:15:34,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:15:34,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:34,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961957755] [2023-12-24 16:15:34,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961957755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:15:34,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:15:34,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:15:34,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68737355] [2023-12-24 16:15:34,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:34,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:15:34,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:15:34,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:15:34,204 INFO L87 Difference]: Start difference. First operand 140 states and 205 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:34,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:34,256 INFO L93 Difference]: Finished difference Result 309 states and 454 transitions. [2023-12-24 16:15:34,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:15:34,256 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2023-12-24 16:15:34,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:34,257 INFO L225 Difference]: With dead ends: 309 [2023-12-24 16:15:34,257 INFO L226 Difference]: Without dead ends: 170 [2023-12-24 16:15:34,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 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 16:15:34,258 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 102 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:34,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 703 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:15:34,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-24 16:15:34,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 143. [2023-12-24 16:15:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 122 states have (on average 1.4098360655737705) internal successors, (172), 122 states have internal predecessors, (172), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 16:15:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 208 transitions. [2023-12-24 16:15:34,266 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 208 transitions. Word has length 142 [2023-12-24 16:15:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:34,267 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 208 transitions. [2023-12-24 16:15:34,267 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 208 transitions. [2023-12-24 16:15:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 16:15:34,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:34,269 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:34,277 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 16:15:34,477 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 16:15:34,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:34,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1270798177, now seen corresponding path program 1 times [2023-12-24 16:15:34,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:34,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143708051] [2023-12-24 16:15:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:34,478 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 16:15:34,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:34,480 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 16:15:34,482 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 16:15:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:34,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:15:34,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:34,794 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 16:15:34,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 16:15:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:15:34,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:15:34,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:34,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143708051] [2023-12-24 16:15:34,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143708051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:15:34,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:15:34,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:15:34,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639967464] [2023-12-24 16:15:34,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:34,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:15:34,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:34,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:15:34,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:15:34,807 INFO L87 Difference]: Start difference. First operand 143 states and 208 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:34,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:34,897 INFO L93 Difference]: Finished difference Result 408 states and 593 transitions. [2023-12-24 16:15:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:15:34,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-24 16:15:34,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:34,902 INFO L225 Difference]: With dead ends: 408 [2023-12-24 16:15:34,902 INFO L226 Difference]: Without dead ends: 266 [2023-12-24 16:15:34,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:15:34,904 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 166 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:34,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 880 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:15:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-24 16:15:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 146. [2023-12-24 16:15:34,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 125 states have (on average 1.4) internal successors, (175), 125 states have internal predecessors, (175), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 16:15:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 211 transitions. [2023-12-24 16:15:34,915 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 211 transitions. Word has length 143 [2023-12-24 16:15:34,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:34,915 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 211 transitions. [2023-12-24 16:15:34,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 211 transitions. [2023-12-24 16:15:34,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 16:15:34,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:34,917 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:34,927 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 (6)] Ended with exit code 0 [2023-12-24 16:15:35,125 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 16:15:35,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:35,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:35,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1404811683, now seen corresponding path program 1 times [2023-12-24 16:15:35,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:35,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285804736] [2023-12-24 16:15:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:35,127 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 16:15:35,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:35,128 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 16:15:35,128 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 (7)] Waiting until timeout for monitored process [2023-12-24 16:15:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:35,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:15:35,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:35,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:35,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:15:35,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 16:15:35,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:15:35,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-24 16:15:35,974 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:15:35,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:15:35,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:15:36,222 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:15:36,222 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 30 treesize of output 25 [2023-12-24 16:15:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-12-24 16:15:36,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:36,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285804736] [2023-12-24 16:15:36,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285804736] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:15:36,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:15:36,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 24 [2023-12-24 16:15:36,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326458792] [2023-12-24 16:15:36,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:36,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 16:15:36,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 16:15:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:15:36,372 INFO L87 Difference]: Start difference. First operand 146 states and 211 transitions. Second operand has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:15:36,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:36,729 INFO L93 Difference]: Finished difference Result 291 states and 421 transitions. [2023-12-24 16:15:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:15:36,730 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 143 [2023-12-24 16:15:36,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:36,731 INFO L225 Difference]: With dead ends: 291 [2023-12-24 16:15:36,731 INFO L226 Difference]: Without dead ends: 146 [2023-12-24 16:15:36,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:15:36,732 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1010 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:36,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 458 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:15:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-24 16:15:36,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2023-12-24 16:15:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 122 states have (on average 1.401639344262295) internal successors, (171), 122 states have internal predecessors, (171), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 16:15:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 207 transitions. [2023-12-24 16:15:36,739 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 207 transitions. Word has length 143 [2023-12-24 16:15:36,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:36,739 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 207 transitions. [2023-12-24 16:15:36,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:15:36,740 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 207 transitions. [2023-12-24 16:15:36,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:15:36,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:36,741 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:36,772 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 16:15:36,941 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 16:15:36,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:36,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:36,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2133416130, now seen corresponding path program 1 times [2023-12-24 16:15:36,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:36,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341238673] [2023-12-24 16:15:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:36,943 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 16:15:36,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:36,944 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 16:15:36,944 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 16:15:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:37,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:15:37,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:37,269 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 16:15:37,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:15:37,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:15:37,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:37,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341238673] [2023-12-24 16:15:37,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341238673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:15:37,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:15:37,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:15:37,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554913316] [2023-12-24 16:15:37,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:37,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:15:37,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:37,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:15:37,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:15:37,299 INFO L87 Difference]: Start difference. First operand 143 states and 207 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:37,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:37,373 INFO L93 Difference]: Finished difference Result 408 states and 590 transitions. [2023-12-24 16:15:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:15:37,373 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2023-12-24 16:15:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:37,375 INFO L225 Difference]: With dead ends: 408 [2023-12-24 16:15:37,375 INFO L226 Difference]: Without dead ends: 266 [2023-12-24 16:15:37,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:15:37,375 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 203 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:37,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 828 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:15:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-24 16:15:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 144. [2023-12-24 16:15:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 123 states have (on average 1.3983739837398375) internal successors, (172), 123 states have internal predecessors, (172), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 16:15:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 208 transitions. [2023-12-24 16:15:37,384 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 208 transitions. Word has length 144 [2023-12-24 16:15:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:37,384 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 208 transitions. [2023-12-24 16:15:37,384 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 208 transitions. [2023-12-24 16:15:37,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:15:37,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:37,385 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:37,399 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 16:15:37,594 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 16:15:37,594 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:37,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:37,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2021002556, now seen corresponding path program 1 times [2023-12-24 16:15:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877608759] [2023-12-24 16:15:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:37,595 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 16:15:37,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:37,596 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 16:15:37,597 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 (9)] Waiting until timeout for monitored process [2023-12-24 16:15:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:37,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:15:37,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:38,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2023-12-24 16:15:38,407 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 16:15:38,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 16:15:38,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:15:38,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-24 16:15:38,511 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:15:38,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:15:38,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:15:38,773 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:15:38,774 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 30 treesize of output 25 [2023-12-24 16:15:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-12-24 16:15:38,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877608759] [2023-12-24 16:15:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877608759] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:15:38,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:15:38,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 24 [2023-12-24 16:15:38,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089920258] [2023-12-24 16:15:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 16:15:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:38,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 16:15:38,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:15:38,921 INFO L87 Difference]: Start difference. First operand 144 states and 208 transitions. Second operand has 14 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:15:39,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:39,280 INFO L93 Difference]: Finished difference Result 287 states and 415 transitions. [2023-12-24 16:15:39,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:15:39,281 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 144 [2023-12-24 16:15:39,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:39,282 INFO L225 Difference]: With dead ends: 287 [2023-12-24 16:15:39,282 INFO L226 Difference]: Without dead ends: 144 [2023-12-24 16:15:39,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:15:39,283 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 915 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:39,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 410 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:15:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-24 16:15:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 122. [2023-12-24 16:15:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 101 states have (on average 1.3762376237623761) internal successors, (139), 101 states have internal predecessors, (139), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 16:15:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 175 transitions. [2023-12-24 16:15:39,309 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 175 transitions. Word has length 144 [2023-12-24 16:15:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:39,309 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 175 transitions. [2023-12-24 16:15:39,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:15:39,310 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 175 transitions. [2023-12-24 16:15:39,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 16:15:39,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:39,310 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:39,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 16:15:39,519 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 16:15:39,519 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:39,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:39,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1681983488, now seen corresponding path program 1 times [2023-12-24 16:15:39,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:39,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212549635] [2023-12-24 16:15:39,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:39,521 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 16:15:39,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:39,528 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 16:15:39,529 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 16:15:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:39,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:15:39,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:39,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:39,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 16:15:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:15:39,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:15:39,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212549635] [2023-12-24 16:15:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212549635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:15:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:15:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:15:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464663967] [2023-12-24 16:15:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:39,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:15:39,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:15:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:15:39,945 INFO L87 Difference]: Start difference. First operand 122 states and 175 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:40,057 INFO L93 Difference]: Finished difference Result 330 states and 474 transitions. [2023-12-24 16:15:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:15:40,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2023-12-24 16:15:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:40,060 INFO L225 Difference]: With dead ends: 330 [2023-12-24 16:15:40,060 INFO L226 Difference]: Without dead ends: 209 [2023-12-24 16:15:40,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:15:40,062 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 208 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:40,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 746 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:15:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-24 16:15:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 179. [2023-12-24 16:15:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 155 states have (on average 1.3935483870967742) internal successors, (216), 156 states have internal predecessors, (216), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:15:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 256 transitions. [2023-12-24 16:15:40,073 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 256 transitions. Word has length 144 [2023-12-24 16:15:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:40,075 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 256 transitions. [2023-12-24 16:15:40,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 256 transitions. [2023-12-24 16:15:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:15:40,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:40,077 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:40,102 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 (10)] Forceful destruction successful, exit code 0 [2023-12-24 16:15:40,285 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 16:15:40,286 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:40,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1143046917, now seen corresponding path program 1 times [2023-12-24 16:15:40,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:40,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500401499] [2023-12-24 16:15:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:40,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:15:40,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:40,288 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 16:15:40,291 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 16:15:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:40,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:15:40,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:40,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:40,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:15:40,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:15:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 10 proven. 338 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 16:15:40,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:15:41,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:41,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-12-24 16:15:41,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:41,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500401499] [2023-12-24 16:15:41,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500401499] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:15:41,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1643470408] [2023-12-24 16:15:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:41,159 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:15:41,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:15:41,202 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:15:41,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 16:15:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:42,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:15:42,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:42,909 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 16:15:43,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:15:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:15:43,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:15:44,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:44,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1643470408] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:15:44,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:15:44,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2023-12-24 16:15:44,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753573252] [2023-12-24 16:15:44,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:15:44,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 16:15:44,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:44,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 16:15:44,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:15:44,606 INFO L87 Difference]: Start difference. First operand 179 states and 256 transitions. Second operand has 17 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 5 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 4 states have call predecessors, (36), 5 states have call successors, (36) [2023-12-24 16:15:48,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:48,322 INFO L93 Difference]: Finished difference Result 556 states and 785 transitions. [2023-12-24 16:15:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 16:15:48,323 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 5 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 4 states have call predecessors, (36), 5 states have call successors, (36) Word has length 146 [2023-12-24 16:15:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:48,325 INFO L225 Difference]: With dead ends: 556 [2023-12-24 16:15:48,325 INFO L226 Difference]: Without dead ends: 378 [2023-12-24 16:15:48,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 370 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=590, Invalid=2950, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 16:15:48,327 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 848 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:48,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1223 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 16:15:48,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-24 16:15:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 359. [2023-12-24 16:15:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 310 states have (on average 1.3741935483870968) internal successors, (426), 313 states have internal predecessors, (426), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 16:15:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 506 transitions. [2023-12-24 16:15:48,348 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 506 transitions. Word has length 146 [2023-12-24 16:15:48,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:48,348 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 506 transitions. [2023-12-24 16:15:48,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 5 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 4 states have call predecessors, (36), 5 states have call successors, (36) [2023-12-24 16:15:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 506 transitions. [2023-12-24 16:15:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:15:48,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:48,349 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:48,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-24 16:15:48,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-12-24 16:15:48,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:15:48,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:48,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:48,758 INFO L85 PathProgramCache]: Analyzing trace with hash -862152585, now seen corresponding path program 1 times [2023-12-24 16:15:48,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:48,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678234098] [2023-12-24 16:15:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:48,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:15:48,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:48,759 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 16:15:48,788 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 16:15:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:49,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:15:49,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:49,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-12-24 16:15:49,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 21 [2023-12-24 16:15:49,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 16:15:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 10 proven. 386 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-24 16:15:49,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:15:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:15:49,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:49,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678234098] [2023-12-24 16:15:49,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678234098] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:15:49,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:15:49,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-24 16:15:49,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642812771] [2023-12-24 16:15:49,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:49,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:15:49,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:49,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:15:49,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:15:49,764 INFO L87 Difference]: Start difference. First operand 359 states and 506 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:49,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:49,896 INFO L93 Difference]: Finished difference Result 783 states and 1102 transitions. [2023-12-24 16:15:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:15:49,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 16:15:49,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:49,899 INFO L225 Difference]: With dead ends: 783 [2023-12-24 16:15:49,899 INFO L226 Difference]: Without dead ends: 425 [2023-12-24 16:15:49,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:15:49,900 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 256 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:49,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 575 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:15:49,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-24 16:15:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 287. [2023-12-24 16:15:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 242 states have (on average 1.3471074380165289) internal successors, (326), 243 states have internal predecessors, (326), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:15:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 398 transitions. [2023-12-24 16:15:49,936 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 398 transitions. Word has length 146 [2023-12-24 16:15:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:49,937 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 398 transitions. [2023-12-24 16:15:49,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 398 transitions. [2023-12-24 16:15:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:15:49,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:49,940 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:49,951 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 16:15:50,148 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 16:15:50,149 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:50,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash -603987147, now seen corresponding path program 1 times [2023-12-24 16:15:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:50,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513121285] [2023-12-24 16:15:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:50,150 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 16:15:50,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:50,151 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 16:15:50,164 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 16:15:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:51,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 16:15:51,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:15:53,721 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 34 treesize of output 30 [2023-12-24 16:15:54,459 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 49 treesize of output 37 [2023-12-24 16:15:54,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2023-12-24 16:15:54,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:15:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 11 proven. 505 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-24 16:15:54,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:15:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:15:55,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:15:55,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513121285] [2023-12-24 16:15:55,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513121285] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:15:55,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:15:55,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [31] total 40 [2023-12-24 16:15:55,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579382059] [2023-12-24 16:15:55,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:15:55,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:15:55,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:15:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:15:55,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 16:15:55,925 INFO L87 Difference]: Start difference. First operand 287 states and 398 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:15:58,008 INFO L93 Difference]: Finished difference Result 913 states and 1271 transitions. [2023-12-24 16:15:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 16:15:58,009 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 16:15:58,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:15:58,011 INFO L225 Difference]: With dead ends: 913 [2023-12-24 16:15:58,011 INFO L226 Difference]: Without dead ends: 627 [2023-12-24 16:15:58,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=284, Invalid=2686, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 16:15:58,013 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 367 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:15:58,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 2257 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:15:58,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2023-12-24 16:15:58,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 409. [2023-12-24 16:15:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 352 states have (on average 1.3579545454545454) internal successors, (478), 355 states have internal predecessors, (478), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 41 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:15:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 566 transitions. [2023-12-24 16:15:58,040 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 566 transitions. Word has length 146 [2023-12-24 16:15:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:15:58,040 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 566 transitions. [2023-12-24 16:15:58,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:15:58,040 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 566 transitions. [2023-12-24 16:15:58,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:15:58,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:15:58,041 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:15:58,053 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 16:15:58,251 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 16:15:58,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:15:58,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:15:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1765342624, now seen corresponding path program 1 times [2023-12-24 16:15:58,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:15:58,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405241361] [2023-12-24 16:15:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:15:58,253 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 16:15:58,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:15:58,254 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 16:15:58,278 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 16:15:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:15:59,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 16:15:59,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:01,629 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 34 treesize of output 30 [2023-12-24 16:16:02,404 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 50 treesize of output 38 [2023-12-24 16:16:02,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2023-12-24 16:16:02,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2023-12-24 16:16:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 11 proven. 505 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-24 16:16:02,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:03,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:03,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405241361] [2023-12-24 16:16:03,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405241361] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:03,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:16:03,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [31] total 40 [2023-12-24 16:16:03,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198116792] [2023-12-24 16:16:03,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:03,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:16:03,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:03,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:16:03,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 16:16:03,746 INFO L87 Difference]: Start difference. First operand 409 states and 566 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:05,934 INFO L93 Difference]: Finished difference Result 1051 states and 1455 transitions. [2023-12-24 16:16:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 16:16:05,935 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 16:16:05,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:05,956 INFO L225 Difference]: With dead ends: 1051 [2023-12-24 16:16:05,957 INFO L226 Difference]: Without dead ends: 643 [2023-12-24 16:16:05,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=284, Invalid=2686, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 16:16:05,962 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 466 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:05,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 2277 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:16:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-12-24 16:16:06,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 377. [2023-12-24 16:16:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 320 states have (on average 1.35) internal successors, (432), 323 states have internal predecessors, (432), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 41 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:16:06,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 520 transitions. [2023-12-24 16:16:06,011 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 520 transitions. Word has length 146 [2023-12-24 16:16:06,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:06,011 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 520 transitions. [2023-12-24 16:16:06,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:06,012 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 520 transitions. [2023-12-24 16:16:06,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:16:06,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:06,013 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:06,025 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 (15)] Ended with exit code 0 [2023-12-24 16:16:06,222 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 16:16:06,223 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:06,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:06,224 INFO L85 PathProgramCache]: Analyzing trace with hash -348482452, now seen corresponding path program 1 times [2023-12-24 16:16:06,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:06,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692055760] [2023-12-24 16:16:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:06,224 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 16:16:06,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:06,225 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 16:16:06,226 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 16:16:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:06,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:16:06,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:07,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:16:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:16:07,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:07,878 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:16:07,878 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 75 treesize of output 46 [2023-12-24 16:16:07,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:07,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692055760] [2023-12-24 16:16:07,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692055760] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:07,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1965743533] [2023-12-24 16:16:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:07,977 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:16:07,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:16:07,980 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:16:07,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-24 16:16:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:08,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:16:08,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:08,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 16:16:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:08,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:16:08,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1965743533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:16:08,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:16:08,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-12-24 16:16:08,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91898304] [2023-12-24 16:16:08,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:08,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:16:08,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:16:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:16:08,980 INFO L87 Difference]: Start difference. First operand 377 states and 520 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:09,369 INFO L93 Difference]: Finished difference Result 1218 states and 1695 transitions. [2023-12-24 16:16:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:16:09,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 16:16:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:09,373 INFO L225 Difference]: With dead ends: 1218 [2023-12-24 16:16:09,373 INFO L226 Difference]: Without dead ends: 842 [2023-12-24 16:16:09,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:16:09,374 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 196 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:09,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 624 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:16:09,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-12-24 16:16:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 517. [2023-12-24 16:16:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 439 states have (on average 1.3439635535307517) internal successors, (590), 444 states have internal predecessors, (590), 60 states have call successors, (60), 17 states have call predecessors, (60), 17 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 16:16:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 710 transitions. [2023-12-24 16:16:09,412 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 710 transitions. Word has length 146 [2023-12-24 16:16:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:09,412 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 710 transitions. [2023-12-24 16:16:09,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 710 transitions. [2023-12-24 16:16:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:16:09,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:09,413 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:09,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:09,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:09,830 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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:16:09,830 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:09,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:09,830 INFO L85 PathProgramCache]: Analyzing trace with hash -741509462, now seen corresponding path program 1 times [2023-12-24 16:16:09,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:09,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008238748] [2023-12-24 16:16:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:09,831 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 16:16:09,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:09,832 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 16:16:09,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 16:16:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:10,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:16:10,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:10,209 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 16:16:10,322 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 61 treesize of output 37 [2023-12-24 16:16:10,356 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 70 treesize of output 34 [2023-12-24 16:16:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:10,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:16:10,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:10,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008238748] [2023-12-24 16:16:10,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008238748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:16:10,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:16:10,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 16:16:10,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958970849] [2023-12-24 16:16:10,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:10,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:16:10,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:10,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:16:10,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:16:10,441 INFO L87 Difference]: Start difference. First operand 517 states and 710 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:12,260 INFO L93 Difference]: Finished difference Result 1539 states and 2113 transitions. [2023-12-24 16:16:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 16:16:12,261 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 16:16:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:12,263 INFO L225 Difference]: With dead ends: 1539 [2023-12-24 16:16:12,263 INFO L226 Difference]: Without dead ends: 1023 [2023-12-24 16:16:12,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:16:12,265 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 430 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:12,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1495 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 16:16:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2023-12-24 16:16:12,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 623. [2023-12-24 16:16:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 545 states have (on average 1.346788990825688) internal successors, (734), 550 states have internal predecessors, (734), 60 states have call successors, (60), 17 states have call predecessors, (60), 17 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 16:16:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 854 transitions. [2023-12-24 16:16:12,309 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 854 transitions. Word has length 146 [2023-12-24 16:16:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:12,310 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 854 transitions. [2023-12-24 16:16:12,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:12,310 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 854 transitions. [2023-12-24 16:16:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:16:12,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:12,311 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:12,321 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 16:16:12,519 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 16:16:12,519 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:12,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash -590045037, now seen corresponding path program 1 times [2023-12-24 16:16:12,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:12,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175968653] [2023-12-24 16:16:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:12,521 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 16:16:12,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:12,522 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 16:16:12,524 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 16:16:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:12,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:16:12,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:13,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 10 [2023-12-24 16:16:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 6 proven. 326 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-24 16:16:13,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:13,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:13,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175968653] [2023-12-24 16:16:13,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175968653] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:13,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:16:13,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-12-24 16:16:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150356049] [2023-12-24 16:16:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:13,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:16:13,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:16:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:16:13,681 INFO L87 Difference]: Start difference. First operand 623 states and 854 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:13,828 INFO L93 Difference]: Finished difference Result 1645 states and 2268 transitions. [2023-12-24 16:16:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:16:13,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 16:16:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:13,832 INFO L225 Difference]: With dead ends: 1645 [2023-12-24 16:16:13,832 INFO L226 Difference]: Without dead ends: 1023 [2023-12-24 16:16:13,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:16:13,834 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 142 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:13,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 687 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:16:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2023-12-24 16:16:13,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 887. [2023-12-24 16:16:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 771 states have (on average 1.3359273670557716) internal successors, (1030), 780 states have internal predecessors, (1030), 88 states have call successors, (88), 27 states have call predecessors, (88), 27 states have return successors, (88), 79 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-24 16:16:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1206 transitions. [2023-12-24 16:16:13,907 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1206 transitions. Word has length 146 [2023-12-24 16:16:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:13,908 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1206 transitions. [2023-12-24 16:16:13,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1206 transitions. [2023-12-24 16:16:13,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:16:13,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:13,909 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:13,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:14,117 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 16:16:14,117 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:14,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash 280401111, now seen corresponding path program 1 times [2023-12-24 16:16:14,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:14,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48011573] [2023-12-24 16:16:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:14,119 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 16:16:14,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:14,120 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 16:16:14,153 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 16:16:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:14,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:16:14,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:14,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 16:16:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 6 proven. 326 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-24 16:16:15,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:15,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:15,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48011573] [2023-12-24 16:16:15,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48011573] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:15,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:16:15,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-12-24 16:16:15,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552477665] [2023-12-24 16:16:15,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:15,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:16:15,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:15,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:16:15,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:16:15,098 INFO L87 Difference]: Start difference. First operand 887 states and 1206 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:15,264 INFO L93 Difference]: Finished difference Result 1777 states and 2405 transitions. [2023-12-24 16:16:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:16:15,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 16:16:15,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:15,267 INFO L225 Difference]: With dead ends: 1777 [2023-12-24 16:16:15,267 INFO L226 Difference]: Without dead ends: 891 [2023-12-24 16:16:15,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:16:15,269 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 190 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:15,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 504 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:16:15,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2023-12-24 16:16:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 695. [2023-12-24 16:16:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 614 states have (on average 1.3241042345276872) internal successors, (813), 619 states have internal predecessors, (813), 60 states have call successors, (60), 20 states have call predecessors, (60), 20 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 16:16:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 933 transitions. [2023-12-24 16:16:15,310 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 933 transitions. Word has length 146 [2023-12-24 16:16:15,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:15,310 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 933 transitions. [2023-12-24 16:16:15,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 933 transitions. [2023-12-24 16:16:15,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:16:15,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:15,312 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:15,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:15,520 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 16:16:15,521 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:15,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:15,521 INFO L85 PathProgramCache]: Analyzing trace with hash 38838526, now seen corresponding path program 1 times [2023-12-24 16:16:15,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:15,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191371352] [2023-12-24 16:16:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:15,522 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 16:16:15,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:15,524 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 16:16:15,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 16:16:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:15,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:16:15,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:16,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 61 [2023-12-24 16:16:16,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:16:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:16:16,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:16,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 57 [2023-12-24 16:16:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:16,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:16,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191371352] [2023-12-24 16:16:16,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191371352] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:16,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:16:16,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 16:16:16,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644714019] [2023-12-24 16:16:16,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:16,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:16:16,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:16:16,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:16:16,818 INFO L87 Difference]: Start difference. First operand 695 states and 933 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:17,215 INFO L93 Difference]: Finished difference Result 1502 states and 2011 transitions. [2023-12-24 16:16:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:16:17,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 16:16:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:17,219 INFO L225 Difference]: With dead ends: 1502 [2023-12-24 16:16:17,219 INFO L226 Difference]: Without dead ends: 808 [2023-12-24 16:16:17,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:16:17,220 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 209 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:17,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 400 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:16:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-12-24 16:16:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 695. [2023-12-24 16:16:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 614 states have (on average 1.3208469055374592) internal successors, (811), 619 states have internal predecessors, (811), 60 states have call successors, (60), 20 states have call predecessors, (60), 20 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 16:16:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 931 transitions. [2023-12-24 16:16:17,264 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 931 transitions. Word has length 146 [2023-12-24 16:16:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:17,265 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 931 transitions. [2023-12-24 16:16:17,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 931 transitions. [2023-12-24 16:16:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:16:17,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:17,266 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:17,274 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 16:16:17,474 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 16:16:17,474 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:17,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:17,474 INFO L85 PathProgramCache]: Analyzing trace with hash -95174980, now seen corresponding path program 1 times [2023-12-24 16:16:17,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:17,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775381110] [2023-12-24 16:16:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:17,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:16:17,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:17,476 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 16:16:17,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 16:16:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:17,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 16:16:17,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:18,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:16:18,614 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 16:16:18,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:16:18,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 40 [2023-12-24 16:16:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:16:19,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:19,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:19,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775381110] [2023-12-24 16:16:19,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775381110] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:19,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:16:19,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 24 [2023-12-24 16:16:19,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648975455] [2023-12-24 16:16:19,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:19,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:16:19,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:16:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:16:19,716 INFO L87 Difference]: Start difference. First operand 695 states and 931 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:21,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:21,701 INFO L93 Difference]: Finished difference Result 2321 states and 3114 transitions. [2023-12-24 16:16:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 16:16:21,702 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 16:16:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:21,706 INFO L225 Difference]: With dead ends: 2321 [2023-12-24 16:16:21,706 INFO L226 Difference]: Without dead ends: 1627 [2023-12-24 16:16:21,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 16:16:21,708 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 571 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 54 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:21,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1888 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 338 Invalid, 4 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 16:16:21,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2023-12-24 16:16:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1177. [2023-12-24 16:16:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1028 states have (on average 1.3054474708171206) internal successors, (1342), 1040 states have internal predecessors, (1342), 110 states have call successors, (110), 38 states have call predecessors, (110), 38 states have return successors, (110), 98 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-24 16:16:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1562 transitions. [2023-12-24 16:16:21,785 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1562 transitions. Word has length 146 [2023-12-24 16:16:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:21,785 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1562 transitions. [2023-12-24 16:16:21,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1562 transitions. [2023-12-24 16:16:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:16:21,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:21,786 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:21,806 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 16:16:21,994 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 16:16:21,995 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:21,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:21,995 INFO L85 PathProgramCache]: Analyzing trace with hash 297852030, now seen corresponding path program 1 times [2023-12-24 16:16:21,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:21,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888594287] [2023-12-24 16:16:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:21,996 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 16:16:21,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:21,997 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 16:16:21,998 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 (23)] Waiting until timeout for monitored process [2023-12-24 16:16:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:22,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:16:22,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:23,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 61 [2023-12-24 16:16:23,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:16:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:16:23,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:23,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 57 [2023-12-24 16:16:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:23,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:23,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888594287] [2023-12-24 16:16:23,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888594287] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:23,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:16:23,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 16:16:23,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185616737] [2023-12-24 16:16:23,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:23,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:16:23,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:23,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:16:23,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:16:23,447 INFO L87 Difference]: Start difference. First operand 1177 states and 1562 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:23,964 INFO L93 Difference]: Finished difference Result 2647 states and 3538 transitions. [2023-12-24 16:16:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:16:23,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 16:16:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:23,969 INFO L225 Difference]: With dead ends: 2647 [2023-12-24 16:16:23,969 INFO L226 Difference]: Without dead ends: 1471 [2023-12-24 16:16:23,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:16:23,972 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 184 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:23,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 607 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:16:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2023-12-24 16:16:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1177. [2023-12-24 16:16:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1028 states have (on average 1.301556420233463) internal successors, (1338), 1040 states have internal predecessors, (1338), 110 states have call successors, (110), 38 states have call predecessors, (110), 38 states have return successors, (110), 98 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-24 16:16:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1558 transitions. [2023-12-24 16:16:24,064 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1558 transitions. Word has length 146 [2023-12-24 16:16:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:24,065 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1558 transitions. [2023-12-24 16:16:24,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1558 transitions. [2023-12-24 16:16:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 16:16:24,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:24,066 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:24,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-24 16:16:24,274 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 16:16:24,274 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:24,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:24,275 INFO L85 PathProgramCache]: Analyzing trace with hash -137568148, now seen corresponding path program 1 times [2023-12-24 16:16:24,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:24,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861008896] [2023-12-24 16:16:24,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:24,275 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 16:16:24,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:24,276 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 16:16:24,278 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 16:16:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:24,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:16:24,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:16:24,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:16:24,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:24,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861008896] [2023-12-24 16:16:24,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861008896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:16:24,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:16:24,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:16:24,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740101183] [2023-12-24 16:16:24,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:24,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:16:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:16:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:16:24,609 INFO L87 Difference]: Start difference. First operand 1177 states and 1558 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 16:16:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:24,708 INFO L93 Difference]: Finished difference Result 2360 states and 3126 transitions. [2023-12-24 16:16:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:16:24,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2023-12-24 16:16:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:24,712 INFO L225 Difference]: With dead ends: 2360 [2023-12-24 16:16:24,712 INFO L226 Difference]: Without dead ends: 1184 [2023-12-24 16:16:24,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:16:24,713 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 7 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:24,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 483 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:16:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2023-12-24 16:16:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1177. [2023-12-24 16:16:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1028 states have (on average 1.2996108949416343) internal successors, (1336), 1040 states have internal predecessors, (1336), 110 states have call successors, (110), 38 states have call predecessors, (110), 38 states have return successors, (110), 98 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-24 16:16:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1556 transitions. [2023-12-24 16:16:24,797 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1556 transitions. Word has length 146 [2023-12-24 16:16:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:24,797 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1556 transitions. [2023-12-24 16:16:24,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 16:16:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1556 transitions. [2023-12-24 16:16:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 16:16:24,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:24,799 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:24,806 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 16:16:25,006 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 16:16:25,006 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:25,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:25,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1138810100, now seen corresponding path program 1 times [2023-12-24 16:16:25,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:25,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271194285] [2023-12-24 16:16:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:25,008 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 16:16:25,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:25,009 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 16:16:25,011 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 16:16:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:25,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 16:16:25,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:27,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 16:16:27,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 10 [2023-12-24 16:16:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 31 proven. 401 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:16:27,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:27,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:16:27,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2023-12-24 16:16:27,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:27,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271194285] [2023-12-24 16:16:27,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271194285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:27,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1535397358] [2023-12-24 16:16:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:27,726 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:16:27,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:16:27,727 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 16:16:27,740 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 16:16:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:28,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:16:28,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:29,337 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 16:16:30,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:16:30,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-24 16:16:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 9 proven. 347 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-24 16:16:30,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:30,404 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 23 treesize of output 15 [2023-12-24 16:16:30,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1535397358] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:30,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:16:30,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 28 [2023-12-24 16:16:30,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514109475] [2023-12-24 16:16:30,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:16:30,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 16:16:30,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 16:16:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1198, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 16:16:30,550 INFO L87 Difference]: Start difference. First operand 1177 states and 1556 transitions. Second operand has 29 states, 25 states have (on average 4.96) internal successors, (124), 24 states have internal predecessors, (124), 9 states have call successors, (36), 8 states have call predecessors, (36), 9 states have return successors, (36), 6 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-24 16:16:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:32,882 INFO L93 Difference]: Finished difference Result 3247 states and 4228 transitions. [2023-12-24 16:16:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 16:16:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.96) internal successors, (124), 24 states have internal predecessors, (124), 9 states have call successors, (36), 8 states have call predecessors, (36), 9 states have return successors, (36), 6 states have call predecessors, (36), 9 states have call successors, (36) Word has length 147 [2023-12-24 16:16:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:32,902 INFO L225 Difference]: With dead ends: 3247 [2023-12-24 16:16:32,902 INFO L226 Difference]: Without dead ends: 2071 [2023-12-24 16:16:32,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=815, Invalid=3217, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 16:16:32,910 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1273 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 3464 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:32,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 3464 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:16:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-12-24 16:16:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1588. [2023-12-24 16:16:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1374 states have (on average 1.2882096069868996) internal successors, (1770), 1389 states have internal predecessors, (1770), 154 states have call successors, (154), 59 states have call predecessors, (154), 59 states have return successors, (154), 139 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:16:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2078 transitions. [2023-12-24 16:16:33,049 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2078 transitions. Word has length 147 [2023-12-24 16:16:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:33,049 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2078 transitions. [2023-12-24 16:16:33,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.96) internal successors, (124), 24 states have internal predecessors, (124), 9 states have call successors, (36), 8 states have call predecessors, (36), 9 states have return successors, (36), 6 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-24 16:16:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2078 transitions. [2023-12-24 16:16:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 16:16:33,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:33,051 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:33,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:33,270 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 16:16:33,468 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 16:16:33,468 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:33,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash -855334606, now seen corresponding path program 1 times [2023-12-24 16:16:33,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:33,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587771990] [2023-12-24 16:16:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:33,469 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 16:16:33,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:33,470 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 16:16:33,472 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 16:16:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:33,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:16:33,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:34,008 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 16:16:34,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 64 [2023-12-24 16:16:34,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:16:34,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:16:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:34,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:16:34,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:34,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587771990] [2023-12-24 16:16:34,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587771990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:16:34,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:16:34,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 16:16:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743878384] [2023-12-24 16:16:34,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:34,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:16:34,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:16:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:16:34,182 INFO L87 Difference]: Start difference. First operand 1588 states and 2078 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:36,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:36,096 INFO L93 Difference]: Finished difference Result 3450 states and 4513 transitions. [2023-12-24 16:16:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:16:36,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 147 [2023-12-24 16:16:36,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:36,101 INFO L225 Difference]: With dead ends: 3450 [2023-12-24 16:16:36,101 INFO L226 Difference]: Without dead ends: 1887 [2023-12-24 16:16:36,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:16:36,103 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 409 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:36,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1045 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 16:16:36,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2023-12-24 16:16:36,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1597. [2023-12-24 16:16:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1383 states have (on average 1.2885032537960954) internal successors, (1782), 1398 states have internal predecessors, (1782), 154 states have call successors, (154), 59 states have call predecessors, (154), 59 states have return successors, (154), 139 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:16:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2090 transitions. [2023-12-24 16:16:36,241 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2090 transitions. Word has length 147 [2023-12-24 16:16:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:36,242 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2090 transitions. [2023-12-24 16:16:36,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2090 transitions. [2023-12-24 16:16:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 16:16:36,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:36,243 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:36,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:36,451 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 16:16:36,451 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:36,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:36,452 INFO L85 PathProgramCache]: Analyzing trace with hash -636479888, now seen corresponding path program 1 times [2023-12-24 16:16:36,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:36,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406656159] [2023-12-24 16:16:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:36,452 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 16:16:36,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:36,453 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 16:16:36,454 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 16:16:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:36,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:16:36,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:37,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:16:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:16:37,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:37,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:37,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406656159] [2023-12-24 16:16:37,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406656159] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:37,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [770776443] [2023-12-24 16:16:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:37,952 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:16:37,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:16:37,953 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:16:37,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-24 16:16:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:39,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:16:39,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:39,730 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 16:16:40,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:16:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:16:40,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:40,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [770776443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:40,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:16:40,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 16:16:40,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714804954] [2023-12-24 16:16:40,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:16:40,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 16:16:40,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:40,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 16:16:40,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:16:40,727 INFO L87 Difference]: Start difference. First operand 1597 states and 2090 transitions. Second operand has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 14 states have internal predecessors, (104), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2023-12-24 16:16:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:42,986 INFO L93 Difference]: Finished difference Result 3807 states and 4962 transitions. [2023-12-24 16:16:42,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:16:42,987 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 14 states have internal predecessors, (104), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 147 [2023-12-24 16:16:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:42,993 INFO L225 Difference]: With dead ends: 3807 [2023-12-24 16:16:42,993 INFO L226 Difference]: Without dead ends: 2235 [2023-12-24 16:16:42,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 338 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:16:42,996 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 501 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:42,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 1094 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 16:16:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2023-12-24 16:16:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1634. [2023-12-24 16:16:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1420 states have (on average 1.2788732394366198) internal successors, (1816), 1435 states have internal predecessors, (1816), 154 states have call successors, (154), 59 states have call predecessors, (154), 59 states have return successors, (154), 139 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:16:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2124 transitions. [2023-12-24 16:16:43,146 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2124 transitions. Word has length 147 [2023-12-24 16:16:43,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:43,146 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2124 transitions. [2023-12-24 16:16:43,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 14 states have internal predecessors, (104), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2023-12-24 16:16:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2124 transitions. [2023-12-24 16:16:43,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 16:16:43,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:43,149 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:43,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:43,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:43,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:16:43,558 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:43,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:43,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1819411408, now seen corresponding path program 1 times [2023-12-24 16:16:43,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:43,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826330892] [2023-12-24 16:16:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:43,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:16:43,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:43,561 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:16:43,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 16:16:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:43,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 16:16:43,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:43,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:16:43,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826330892] [2023-12-24 16:16:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826330892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:16:43,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:16:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:16:43,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665132984] [2023-12-24 16:16:43,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:43,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 16:16:43,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:43,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 16:16:43,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 16:16:43,863 INFO L87 Difference]: Start difference. First operand 1634 states and 2124 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:44,007 INFO L93 Difference]: Finished difference Result 3247 states and 4228 transitions. [2023-12-24 16:16:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 16:16:44,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 16:16:44,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:44,011 INFO L225 Difference]: With dead ends: 3247 [2023-12-24 16:16:44,012 INFO L226 Difference]: Without dead ends: 1638 [2023-12-24 16:16:44,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 16:16:44,014 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:44,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 317 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:16:44,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-12-24 16:16:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1638. [2023-12-24 16:16:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1424 states have (on average 1.2780898876404494) internal successors, (1820), 1439 states have internal predecessors, (1820), 154 states have call successors, (154), 59 states have call predecessors, (154), 59 states have return successors, (154), 139 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:16:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2128 transitions. [2023-12-24 16:16:44,144 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2128 transitions. Word has length 148 [2023-12-24 16:16:44,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:44,145 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 2128 transitions. [2023-12-24 16:16:44,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2128 transitions. [2023-12-24 16:16:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 16:16:44,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:44,147 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:44,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:44,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:16:44,355 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:44,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:44,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1773956014, now seen corresponding path program 1 times [2023-12-24 16:16:44,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:44,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223571221] [2023-12-24 16:16:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:44,356 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 16:16:44,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:44,358 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 16:16:44,359 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 16:16:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:44,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:16:44,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:44,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:16:44,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:16:44,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 36 [2023-12-24 16:16:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:45,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:16:45,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:45,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223571221] [2023-12-24 16:16:45,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223571221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:16:45,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:16:45,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 16:16:45,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656704166] [2023-12-24 16:16:45,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:45,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:16:45,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:16:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:16:45,042 INFO L87 Difference]: Start difference. First operand 1638 states and 2128 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:46,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:46,570 INFO L93 Difference]: Finished difference Result 3723 states and 4834 transitions. [2023-12-24 16:16:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 16:16:46,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 16:16:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:46,576 INFO L225 Difference]: With dead ends: 3723 [2023-12-24 16:16:46,576 INFO L226 Difference]: Without dead ends: 2110 [2023-12-24 16:16:46,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:16:46,579 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 360 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:46,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1867 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 16:16:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2023-12-24 16:16:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1626. [2023-12-24 16:16:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1412 states have (on average 1.2804532577903682) internal successors, (1808), 1427 states have internal predecessors, (1808), 154 states have call successors, (154), 59 states have call predecessors, (154), 59 states have return successors, (154), 139 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-24 16:16:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2116 transitions. [2023-12-24 16:16:46,716 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2116 transitions. Word has length 148 [2023-12-24 16:16:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:46,716 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 2116 transitions. [2023-12-24 16:16:46,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:46,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2116 transitions. [2023-12-24 16:16:46,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 16:16:46,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:46,717 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:46,740 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 16:16:46,926 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 16:16:46,926 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:46,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash -993608026, now seen corresponding path program 1 times [2023-12-24 16:16:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:46,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142753518] [2023-12-24 16:16:46,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:46,927 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 16:16:46,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:46,928 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 16:16:46,929 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 (32)] Waiting until timeout for monitored process [2023-12-24 16:16:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:47,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:16:47,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:48,247 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 61 treesize of output 37 [2023-12-24 16:16:48,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2023-12-24 16:16:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:16:48,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:48,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:48,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142753518] [2023-12-24 16:16:48,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142753518] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:48,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:16:48,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-24 16:16:48,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036852594] [2023-12-24 16:16:48,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:48,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:16:48,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:48,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:16:48,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:16:48,582 INFO L87 Difference]: Start difference. First operand 1626 states and 2116 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:49,158 INFO L93 Difference]: Finished difference Result 3526 states and 4608 transitions. [2023-12-24 16:16:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:16:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 16:16:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:49,169 INFO L225 Difference]: With dead ends: 3526 [2023-12-24 16:16:49,169 INFO L226 Difference]: Without dead ends: 1925 [2023-12-24 16:16:49,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:16:49,171 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 158 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:49,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 719 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:16:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2023-12-24 16:16:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1494. [2023-12-24 16:16:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1301 states have (on average 1.275172943889316) internal successors, (1659), 1314 states have internal predecessors, (1659), 138 states have call successors, (138), 54 states have call predecessors, (138), 54 states have return successors, (138), 125 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-24 16:16:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1935 transitions. [2023-12-24 16:16:49,296 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1935 transitions. Word has length 148 [2023-12-24 16:16:49,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:49,296 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1935 transitions. [2023-12-24 16:16:49,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1935 transitions. [2023-12-24 16:16:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 16:16:49,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:49,298 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:49,306 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 16:16:49,506 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 16:16:49,506 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:49,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:49,506 INFO L85 PathProgramCache]: Analyzing trace with hash -600581016, now seen corresponding path program 1 times [2023-12-24 16:16:49,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:49,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533215283] [2023-12-24 16:16:49,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:49,507 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 16:16:49,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:49,508 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 16:16:49,510 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 16:16:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:49,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:16:49,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:49,942 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 16:16:50,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:16:50,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:16:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:50,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:16:50,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533215283] [2023-12-24 16:16:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533215283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:16:50,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:16:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 16:16:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972709828] [2023-12-24 16:16:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:50,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:16:50,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:50,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:16:50,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:16:50,373 INFO L87 Difference]: Start difference. First operand 1494 states and 1935 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:52,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:52,258 INFO L93 Difference]: Finished difference Result 3146 states and 4079 transitions. [2023-12-24 16:16:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:16:52,260 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 16:16:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:52,264 INFO L225 Difference]: With dead ends: 3146 [2023-12-24 16:16:52,264 INFO L226 Difference]: Without dead ends: 1677 [2023-12-24 16:16:52,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:16:52,266 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 241 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:52,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1908 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 16:16:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2023-12-24 16:16:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1494. [2023-12-24 16:16:52,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1301 states have (on average 1.275172943889316) internal successors, (1659), 1314 states have internal predecessors, (1659), 138 states have call successors, (138), 54 states have call predecessors, (138), 54 states have return successors, (138), 125 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-24 16:16:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1935 transitions. [2023-12-24 16:16:52,382 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1935 transitions. Word has length 148 [2023-12-24 16:16:52,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:52,382 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1935 transitions. [2023-12-24 16:16:52,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1935 transitions. [2023-12-24 16:16:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 16:16:52,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:52,384 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:52,394 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 (33)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:52,591 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 16:16:52,592 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:52,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:52,592 INFO L85 PathProgramCache]: Analyzing trace with hash -734594522, now seen corresponding path program 1 times [2023-12-24 16:16:52,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:52,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070145935] [2023-12-24 16:16:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:52,593 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 16:16:52,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:52,594 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 16:16:52,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 16:16:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:53,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:16:53,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:54,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 78 [2023-12-24 16:16:54,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 51 [2023-12-24 16:16:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:16:54,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:16:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:16:55,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:16:55,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070145935] [2023-12-24 16:16:55,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070145935] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:16:55,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:16:55,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2023-12-24 16:16:55,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917518175] [2023-12-24 16:16:55,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:16:55,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:16:55,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:16:55,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:16:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:16:55,137 INFO L87 Difference]: Start difference. First operand 1494 states and 1935 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:16:58,048 INFO L93 Difference]: Finished difference Result 3736 states and 4852 transitions. [2023-12-24 16:16:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:16:58,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 16:16:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:16:58,090 INFO L225 Difference]: With dead ends: 3736 [2023-12-24 16:16:58,091 INFO L226 Difference]: Without dead ends: 2267 [2023-12-24 16:16:58,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:16:58,097 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 596 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:16:58,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 739 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 16:16:58,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2023-12-24 16:16:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1242. [2023-12-24 16:16:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1091 states have (on average 1.2804766269477543) internal successors, (1397), 1100 states have internal predecessors, (1397), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (106), 97 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-24 16:16:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1609 transitions. [2023-12-24 16:16:58,317 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1609 transitions. Word has length 148 [2023-12-24 16:16:58,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:16:58,317 INFO L495 AbstractCegarLoop]: Abstraction has 1242 states and 1609 transitions. [2023-12-24 16:16:58,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:16:58,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1609 transitions. [2023-12-24 16:16:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 16:16:58,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:16:58,318 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:16:58,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 16:16:58,526 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 16:16:58,526 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:16:58,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:16:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1769965993, now seen corresponding path program 1 times [2023-12-24 16:16:58,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:16:58,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091561522] [2023-12-24 16:16:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:16:58,527 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 16:16:58,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:16:58,528 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 16:16:58,533 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 16:16:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:16:58,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:16:58,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:16:59,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2023-12-24 16:16:59,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:16:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:16:59,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:17:00,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2023-12-24 16:17:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:17:00,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:17:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091561522] [2023-12-24 16:17:00,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091561522] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:17:00,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:17:00,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2023-12-24 16:17:00,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633667327] [2023-12-24 16:17:00,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:17:00,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:17:00,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:17:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:17:00,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:17:00,244 INFO L87 Difference]: Start difference. First operand 1242 states and 1609 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:17:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:17:01,373 INFO L93 Difference]: Finished difference Result 3059 states and 3965 transitions. [2023-12-24 16:17:01,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:17:01,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 16:17:01,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:17:01,377 INFO L225 Difference]: With dead ends: 3059 [2023-12-24 16:17:01,377 INFO L226 Difference]: Without dead ends: 1842 [2023-12-24 16:17:01,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:17:01,379 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 242 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:17:01,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 615 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:17:01,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2023-12-24 16:17:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1296. [2023-12-24 16:17:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1145 states have (on average 1.2812227074235807) internal successors, (1467), 1154 states have internal predecessors, (1467), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (106), 97 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-24 16:17:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1679 transitions. [2023-12-24 16:17:01,490 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1679 transitions. Word has length 148 [2023-12-24 16:17:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:17:01,490 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 1679 transitions. [2023-12-24 16:17:01,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:17:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1679 transitions. [2023-12-24 16:17:01,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 16:17:01,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:17:01,492 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:17:01,518 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 (35)] Ended with exit code 0 [2023-12-24 16:17:01,699 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 16:17:01,700 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:17:01,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:17:01,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1707352853, now seen corresponding path program 1 times [2023-12-24 16:17:01,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:17:01,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493056049] [2023-12-24 16:17:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:01,701 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 16:17:01,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:17:01,702 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 16:17:01,703 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 16:17:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:02,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:17:02,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:02,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 16:17:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:17:02,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:17:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:17:02,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:17:02,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493056049] [2023-12-24 16:17:02,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493056049] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:17:02,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:17:02,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-12-24 16:17:02,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095609892] [2023-12-24 16:17:02,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:17:02,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:17:02,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:17:02,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:17:02,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:17:02,898 INFO L87 Difference]: Start difference. First operand 1296 states and 1679 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:17:03,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:17:03,402 INFO L93 Difference]: Finished difference Result 3351 states and 4338 transitions. [2023-12-24 16:17:03,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:17:03,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 16:17:03,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:17:03,407 INFO L225 Difference]: With dead ends: 3351 [2023-12-24 16:17:03,408 INFO L226 Difference]: Without dead ends: 2080 [2023-12-24 16:17:03,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:17:03,411 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 112 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:17:03,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 504 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:17:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2023-12-24 16:17:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1323. [2023-12-24 16:17:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1172 states have (on average 1.272184300341297) internal successors, (1491), 1181 states have internal predecessors, (1491), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (106), 97 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-24 16:17:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1703 transitions. [2023-12-24 16:17:03,536 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1703 transitions. Word has length 148 [2023-12-24 16:17:03,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:17:03,536 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 1703 transitions. [2023-12-24 16:17:03,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:17:03,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1703 transitions. [2023-12-24 16:17:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 16:17:03,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:17:03,537 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:17:03,547 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 16:17:03,745 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 16:17:03,745 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:17:03,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:17:03,746 INFO L85 PathProgramCache]: Analyzing trace with hash 791752746, now seen corresponding path program 1 times [2023-12-24 16:17:03,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:17:03,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300459213] [2023-12-24 16:17:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:03,746 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 16:17:03,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:17:03,748 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 16:17:03,748 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 16:17:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:04,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:17:04,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-12-24 16:17:04,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:17:04,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:17:04,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300459213] [2023-12-24 16:17:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300459213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:17:04,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:17:04,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:17:04,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562400553] [2023-12-24 16:17:04,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:17:04,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:17:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:17:04,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:17:04,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:17:04,126 INFO L87 Difference]: Start difference. First operand 1323 states and 1703 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:17:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:17:04,369 INFO L93 Difference]: Finished difference Result 2679 states and 3440 transitions. [2023-12-24 16:17:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:17:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2023-12-24 16:17:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:17:04,372 INFO L225 Difference]: With dead ends: 2679 [2023-12-24 16:17:04,372 INFO L226 Difference]: Without dead ends: 1373 [2023-12-24 16:17:04,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:17:04,374 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 7 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:17:04,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 660 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:17:04,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2023-12-24 16:17:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1323. [2023-12-24 16:17:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1172 states have (on average 1.2687713310580204) internal successors, (1487), 1181 states have internal predecessors, (1487), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (106), 97 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-24 16:17:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1699 transitions. [2023-12-24 16:17:04,487 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1699 transitions. Word has length 148 [2023-12-24 16:17:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:17:04,487 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 1699 transitions. [2023-12-24 16:17:04,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:17:04,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1699 transitions. [2023-12-24 16:17:04,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 16:17:04,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:17:04,489 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:17:04,499 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 (37)] Ended with exit code 0 [2023-12-24 16:17:04,699 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 16:17:04,699 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:17:04,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:17:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1759103400, now seen corresponding path program 1 times [2023-12-24 16:17:04,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:17:04,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67017361] [2023-12-24 16:17:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:04,700 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 16:17:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:17:04,701 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 16:17:04,703 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 16:17:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:05,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:17:05,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:05,090 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 16:17:05,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2023-12-24 16:17:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:17:05,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:17:05,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:17:05,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67017361] [2023-12-24 16:17:05,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67017361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:17:05,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:17:05,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 16:17:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913173260] [2023-12-24 16:17:05,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:17:05,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:17:05,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:17:05,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:17:05,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:17:05,174 INFO L87 Difference]: Start difference. First operand 1323 states and 1699 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:17:06,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:17:06,376 INFO L93 Difference]: Finished difference Result 3173 states and 4108 transitions. [2023-12-24 16:17:06,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:17:06,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 16:17:06,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:17:06,379 INFO L225 Difference]: With dead ends: 3173 [2023-12-24 16:17:06,379 INFO L226 Difference]: Without dead ends: 1875 [2023-12-24 16:17:06,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:17:06,381 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 313 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:17:06,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1977 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:17:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2023-12-24 16:17:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1477. [2023-12-24 16:17:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1296 states have (on average 1.2654320987654322) internal successors, (1640), 1307 states have internal predecessors, (1640), 128 states have call successors, (128), 52 states have call predecessors, (128), 52 states have return successors, (128), 117 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 16:17:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1896 transitions. [2023-12-24 16:17:06,514 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1896 transitions. Word has length 148 [2023-12-24 16:17:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:17:06,514 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 1896 transitions. [2023-12-24 16:17:06,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:17:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1896 transitions. [2023-12-24 16:17:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 16:17:06,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:17:06,516 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:17:06,524 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 16:17:06,724 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 16:17:06,724 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:17:06,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:17:06,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1366076390, now seen corresponding path program 1 times [2023-12-24 16:17:06,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:17:06,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748675322] [2023-12-24 16:17:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:06,725 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 16:17:06,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:17:06,726 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 16:17:06,728 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 (39)] Waiting until timeout for monitored process [2023-12-24 16:17:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:07,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:17:07,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:07,803 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 70 treesize of output 34 [2023-12-24 16:17:07,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:17:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:17:07,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:17:08,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2023-12-24 16:17:08,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:17:08,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748675322] [2023-12-24 16:17:08,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748675322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:17:08,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1078645781] [2023-12-24 16:17:08,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:08,193 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:17:08,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:17:08,199 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:17:08,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2023-12-24 16:17:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:09,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:17:09,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:09,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2023-12-24 16:17:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:17:09,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:17:09,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1078645781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:17:09,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:17:09,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 16:17:09,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53350365] [2023-12-24 16:17:09,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:17:09,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:17:09,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:17:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:17:09,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:17:09,223 INFO L87 Difference]: Start difference. First operand 1477 states and 1896 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:17:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:17:09,808 INFO L93 Difference]: Finished difference Result 2993 states and 3839 transitions. [2023-12-24 16:17:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:17:09,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 16:17:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:17:09,830 INFO L225 Difference]: With dead ends: 2993 [2023-12-24 16:17:09,830 INFO L226 Difference]: Without dead ends: 1541 [2023-12-24 16:17:09,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:17:09,833 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 124 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:17:09,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 613 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:17:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2023-12-24 16:17:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1191. [2023-12-24 16:17:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1061 states have (on average 1.2610744580584354) internal successors, (1338), 1068 states have internal predecessors, (1338), 90 states have call successors, (90), 39 states have call predecessors, (90), 39 states have return successors, (90), 83 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 16:17:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1518 transitions. [2023-12-24 16:17:09,990 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1518 transitions. Word has length 148 [2023-12-24 16:17:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:17:09,990 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1518 transitions. [2023-12-24 16:17:09,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:17:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1518 transitions. [2023-12-24 16:17:09,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 16:17:09,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:17:09,991 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:17:10,000 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 16:17:10,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2023-12-24 16:17:10,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:17:10,411 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:17:10,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:17:10,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1498560650, now seen corresponding path program 1 times [2023-12-24 16:17:10,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:17:10,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842950799] [2023-12-24 16:17:10,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:10,412 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 16:17:10,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:17:10,413 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 16:17:10,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-24 16:17:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:10,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:17:10,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:11,545 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 16:17:11,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 61 [2023-12-24 16:17:11,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:17:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:17:11,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:17:12,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:17:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842950799] [2023-12-24 16:17:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842950799] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:17:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [814373797] [2023-12-24 16:17:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:12,022 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:17:12,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:17:12,023 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:17:12,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2023-12-24 16:17:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:13,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 16:17:13,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:14,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2023-12-24 16:17:15,290 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 16:17:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:17:15,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:17:16,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [814373797] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:17:16,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:17:16,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-24 16:17:16,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541132706] [2023-12-24 16:17:16,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:17:16,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 16:17:16,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:17:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 16:17:16,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 16:17:16,217 INFO L87 Difference]: Start difference. First operand 1191 states and 1518 transitions. Second operand has 20 states, 20 states have (on average 5.6) internal successors, (112), 19 states have internal predecessors, (112), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2023-12-24 16:17:20,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:17:20,761 INFO L93 Difference]: Finished difference Result 4785 states and 6102 transitions. [2023-12-24 16:17:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 16:17:20,761 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 19 states have internal predecessors, (112), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 149 [2023-12-24 16:17:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:17:20,779 INFO L225 Difference]: With dead ends: 4785 [2023-12-24 16:17:20,780 INFO L226 Difference]: Without dead ends: 3619 [2023-12-24 16:17:20,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 332 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=331, Invalid=2021, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 16:17:20,782 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 681 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 181 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:17:20,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 2610 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1747 Invalid, 2 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 16:17:20,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2023-12-24 16:17:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 1939. [2023-12-24 16:17:20,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1737 states have (on average 1.2677029360967185) internal successors, (2202), 1749 states have internal predecessors, (2202), 142 states have call successors, (142), 59 states have call predecessors, (142), 59 states have return successors, (142), 130 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-24 16:17:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2486 transitions. [2023-12-24 16:17:20,969 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2486 transitions. Word has length 149 [2023-12-24 16:17:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:17:20,969 INFO L495 AbstractCegarLoop]: Abstraction has 1939 states and 2486 transitions. [2023-12-24 16:17:20,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 19 states have internal predecessors, (112), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2023-12-24 16:17:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2486 transitions. [2023-12-24 16:17:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 16:17:20,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:17:20,971 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:17:20,995 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 16:17:21,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2023-12-24 16:17:21,384 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=3,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:17:21,384 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:17:21,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:17:21,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1234248457, now seen corresponding path program 1 times [2023-12-24 16:17:21,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:17:21,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612995134] [2023-12-24 16:17:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:21,385 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 16:17:21,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:17:21,386 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 16:17:21,421 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 16:17:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:21,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:17:21,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:22,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:17:22,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:17:22,832 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 16:17:23,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:17:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:17:23,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:17:23,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 45 [2023-12-24 16:17:23,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:17:23,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612995134] [2023-12-24 16:17:23,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612995134] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:17:23,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1068453233] [2023-12-24 16:17:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:23,653 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:17:23,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:17:23,654 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:17:23,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2023-12-24 16:17:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:24,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 16:17:24,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:25,442 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 16:17:26,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:17:26,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:17:26,423 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 16:17:26,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:17:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:17:26,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:17:26,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 45 [2023-12-24 16:17:26,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1068453233] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:17:26,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:17:26,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2023-12-24 16:17:26,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100951651] [2023-12-24 16:17:26,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:17:26,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 16:17:26,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:17:26,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 16:17:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:17:26,822 INFO L87 Difference]: Start difference. First operand 1939 states and 2486 transitions. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2023-12-24 16:17:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:17:36,939 INFO L93 Difference]: Finished difference Result 6374 states and 8118 transitions. [2023-12-24 16:17:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 16:17:36,941 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 149 [2023-12-24 16:17:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:17:36,947 INFO L225 Difference]: With dead ends: 6374 [2023-12-24 16:17:36,948 INFO L226 Difference]: Without dead ends: 4460 [2023-12-24 16:17:36,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 338 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=551, Invalid=2641, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 16:17:36,950 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 820 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 153 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:17:36,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 3074 Invalid, 2938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2784 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2023-12-24 16:17:36,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2023-12-24 16:17:37,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 1981. [2023-12-24 16:17:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1779 states have (on average 1.2641933670601462) internal successors, (2249), 1791 states have internal predecessors, (2249), 142 states have call successors, (142), 59 states have call predecessors, (142), 59 states have return successors, (142), 130 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-24 16:17:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2533 transitions. [2023-12-24 16:17:37,165 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2533 transitions. Word has length 149 [2023-12-24 16:17:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:17:37,165 INFO L495 AbstractCegarLoop]: Abstraction has 1981 states and 2533 transitions. [2023-12-24 16:17:37,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2023-12-24 16:17:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2533 transitions. [2023-12-24 16:17:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 16:17:37,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:17:37,170 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:17:37,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2023-12-24 16:17:37,406 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 16:17:37,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:17:37,590 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:17:37,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:17:37,591 INFO L85 PathProgramCache]: Analyzing trace with hash 766593224, now seen corresponding path program 1 times [2023-12-24 16:17:37,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:17:37,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282501429] [2023-12-24 16:17:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:37,591 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 16:17:37,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:17:37,600 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 16:17:37,601 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 16:17:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:37,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:17:37,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:17:38,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:17:38,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:17:38,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282501429] [2023-12-24 16:17:38,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282501429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:17:38,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:17:38,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:17:38,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719732957] [2023-12-24 16:17:38,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:17:38,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:17:38,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:17:38,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:17:38,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:17:38,006 INFO L87 Difference]: Start difference. First operand 1981 states and 2533 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 16:17:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:17:38,224 INFO L93 Difference]: Finished difference Result 3953 states and 5062 transitions. [2023-12-24 16:17:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:17:38,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 149 [2023-12-24 16:17:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:17:38,241 INFO L225 Difference]: With dead ends: 3953 [2023-12-24 16:17:38,241 INFO L226 Difference]: Without dead ends: 1997 [2023-12-24 16:17:38,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:17:38,244 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 7 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:17:38,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 480 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:17:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2023-12-24 16:17:38,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1981. [2023-12-24 16:17:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1779 states have (on average 1.2619449128724003) internal successors, (2245), 1791 states have internal predecessors, (2245), 142 states have call successors, (142), 59 states have call predecessors, (142), 59 states have return successors, (142), 130 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-24 16:17:38,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2529 transitions. [2023-12-24 16:17:38,466 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2529 transitions. Word has length 149 [2023-12-24 16:17:38,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:17:38,466 INFO L495 AbstractCegarLoop]: Abstraction has 1981 states and 2529 transitions. [2023-12-24 16:17:38,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 16:17:38,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2529 transitions. [2023-12-24 16:17:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 16:17:38,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:17:38,468 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:17:38,476 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 16:17:38,676 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 16:17:38,677 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:17:38,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:17:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1813657089, now seen corresponding path program 1 times [2023-12-24 16:17:38,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:17:38,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843004719] [2023-12-24 16:17:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:38,678 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 16:17:38,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:17:38,679 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 16:17:38,680 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 16:17:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:39,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:17:39,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:39,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 50 [2023-12-24 16:17:39,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 26 [2023-12-24 16:17:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:17:40,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:17:40,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 40 [2023-12-24 16:17:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:17:40,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:17:40,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843004719] [2023-12-24 16:17:40,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843004719] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:17:40,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:17:40,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2023-12-24 16:17:40,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643434362] [2023-12-24 16:17:40,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:17:40,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:17:40,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:17:40,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:17:40,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:17:40,490 INFO L87 Difference]: Start difference. First operand 1981 states and 2529 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:17:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:17:41,756 INFO L93 Difference]: Finished difference Result 4156 states and 5315 transitions. [2023-12-24 16:17:41,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:17:41,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 150 [2023-12-24 16:17:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:17:41,760 INFO L225 Difference]: With dead ends: 4156 [2023-12-24 16:17:41,760 INFO L226 Difference]: Without dead ends: 2200 [2023-12-24 16:17:41,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:17:41,763 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 121 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:17:41,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 1021 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:17:41,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2023-12-24 16:17:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 1981. [2023-12-24 16:17:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1779 states have (on average 1.2602585722315909) internal successors, (2242), 1791 states have internal predecessors, (2242), 142 states have call successors, (142), 59 states have call predecessors, (142), 59 states have return successors, (142), 130 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-24 16:17:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2526 transitions. [2023-12-24 16:17:41,978 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2526 transitions. Word has length 150 [2023-12-24 16:17:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:17:41,978 INFO L495 AbstractCegarLoop]: Abstraction has 1981 states and 2526 transitions. [2023-12-24 16:17:41,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:17:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2526 transitions. [2023-12-24 16:17:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 16:17:41,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:17:41,980 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:17:41,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2023-12-24 16:17:42,186 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 16:17:42,186 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:17:42,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:17:42,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1171192782, now seen corresponding path program 1 times [2023-12-24 16:17:42,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:17:42,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101844265] [2023-12-24 16:17:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:42,187 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 16:17:42,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:17:42,188 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 16:17:42,190 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 16:17:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:42,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:17:42,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:43,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 33 [2023-12-24 16:17:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 5 proven. 303 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:17:43,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:17:44,152 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:17:44,152 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 95 treesize of output 54 [2023-12-24 16:17:44,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:17:44,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101844265] [2023-12-24 16:17:44,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101844265] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:17:44,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1069344907] [2023-12-24 16:17:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:17:44,360 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:17:44,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:17:44,361 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:17:44,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2023-12-24 16:17:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:17:45,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 16:17:45,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:17:46,848 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 16:17:47,705 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 16:17:49,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-24 16:17:49,224 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 16:17:49,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:17:49,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:17:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:17:49,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:17:50,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1069344907] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:17:50,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:17:50,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 28 [2023-12-24 16:17:50,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751327418] [2023-12-24 16:17:50,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:17:50,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 16:17:50,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:17:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 16:17:50,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1631, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 16:17:50,664 INFO L87 Difference]: Start difference. First operand 1981 states and 2526 transitions. Second operand has 29 states, 27 states have (on average 4.481481481481482) internal successors, (121), 25 states have internal predecessors, (121), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-24 16:18:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:18:05,366 INFO L93 Difference]: Finished difference Result 5690 states and 7164 transitions. [2023-12-24 16:18:05,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-24 16:18:05,367 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.481481481481482) internal successors, (121), 25 states have internal predecessors, (121), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) Word has length 150 [2023-12-24 16:18:05,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:18:05,373 INFO L225 Difference]: With dead ends: 5690 [2023-12-24 16:18:05,373 INFO L226 Difference]: Without dead ends: 3734 [2023-12-24 16:18:05,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=1453, Invalid=6919, Unknown=0, NotChecked=0, Total=8372 [2023-12-24 16:18:05,377 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1362 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 3589 SdHoareTripleChecker+Invalid, 4027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:18:05,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 3589 Invalid, 4027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-24 16:18:05,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2023-12-24 16:18:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 1825. [2023-12-24 16:18:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1627 states have (on average 1.2519975414874) internal successors, (2037), 1635 states have internal predecessors, (2037), 138 states have call successors, (138), 59 states have call predecessors, (138), 59 states have return successors, (138), 130 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-24 16:18:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2313 transitions. [2023-12-24 16:18:05,622 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2313 transitions. Word has length 150 [2023-12-24 16:18:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:18:05,622 INFO L495 AbstractCegarLoop]: Abstraction has 1825 states and 2313 transitions. [2023-12-24 16:18:05,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.481481481481482) internal successors, (121), 25 states have internal predecessors, (121), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-24 16:18:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2313 transitions. [2023-12-24 16:18:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 16:18:05,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:18:05,623 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:18:05,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2023-12-24 16:18:05,841 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 (47)] Ended with exit code 0 [2023-12-24 16:18:06,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:18:06,041 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:18:06,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:18:06,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2084413022, now seen corresponding path program 1 times [2023-12-24 16:18:06,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:18:06,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104085756] [2023-12-24 16:18:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:06,042 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 16:18:06,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:18:06,043 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 16:18:06,047 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 16:18:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:06,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:18:06,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:07,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 16:18:07,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:18:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:18:07,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:18:07,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 40 [2023-12-24 16:18:08,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:18:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104085756] [2023-12-24 16:18:08,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104085756] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:18:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [675558018] [2023-12-24 16:18:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:08,036 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:18:08,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:18:08,037 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:18:08,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2023-12-24 16:18:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:09,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:18:09,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:09,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 38 [2023-12-24 16:18:09,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 26 [2023-12-24 16:18:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:18:09,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:18:09,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [675558018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:18:09,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:18:09,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 16:18:09,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080098745] [2023-12-24 16:18:09,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:18:09,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:18:09,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:18:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:18:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:18:09,228 INFO L87 Difference]: Start difference. First operand 1825 states and 2313 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:18:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:18:09,961 INFO L93 Difference]: Finished difference Result 3805 states and 4826 transitions. [2023-12-24 16:18:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:18:09,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 150 [2023-12-24 16:18:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:18:09,966 INFO L225 Difference]: With dead ends: 3805 [2023-12-24 16:18:09,966 INFO L226 Difference]: Without dead ends: 2005 [2023-12-24 16:18:09,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:18:09,968 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 126 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:18:09,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 609 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:18:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2023-12-24 16:18:10,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1716. [2023-12-24 16:18:10,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1518 states have (on average 1.2476943346508564) internal successors, (1894), 1526 states have internal predecessors, (1894), 138 states have call successors, (138), 59 states have call predecessors, (138), 59 states have return successors, (138), 130 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-24 16:18:10,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2170 transitions. [2023-12-24 16:18:10,203 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2170 transitions. Word has length 150 [2023-12-24 16:18:10,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:18:10,203 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2170 transitions. [2023-12-24 16:18:10,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:18:10,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2170 transitions. [2023-12-24 16:18:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 16:18:10,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:18:10,205 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:18:10,213 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 16:18:10,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (50)] Forceful destruction successful, exit code 0 [2023-12-24 16:18:10,613 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=3,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:18:10,614 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:18:10,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:18:10,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1052957357, now seen corresponding path program 1 times [2023-12-24 16:18:10,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:18:10,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076690574] [2023-12-24 16:18:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:10,615 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 16:18:10,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:18:10,616 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 16:18:10,627 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 16:18:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:11,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:18:11,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:18:12,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:18:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:18:12,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:18:12,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076690574] [2023-12-24 16:18:12,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076690574] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:18:12,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:18:12,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2023-12-24 16:18:12,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181765539] [2023-12-24 16:18:12,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:18:12,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:18:12,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:18:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:18:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:18:12,959 INFO L87 Difference]: Start difference. First operand 1716 states and 2170 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:18:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:18:14,331 INFO L93 Difference]: Finished difference Result 4107 states and 5204 transitions. [2023-12-24 16:18:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:18:14,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 150 [2023-12-24 16:18:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:18:14,335 INFO L225 Difference]: With dead ends: 4107 [2023-12-24 16:18:14,335 INFO L226 Difference]: Without dead ends: 2416 [2023-12-24 16:18:14,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:18:14,337 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 215 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:18:14,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 795 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:18:14,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2023-12-24 16:18:14,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1758. [2023-12-24 16:18:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1560 states have (on average 1.2564102564102564) internal successors, (1960), 1568 states have internal predecessors, (1960), 138 states have call successors, (138), 59 states have call predecessors, (138), 59 states have return successors, (138), 130 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-24 16:18:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2236 transitions. [2023-12-24 16:18:14,562 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2236 transitions. Word has length 150 [2023-12-24 16:18:14,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:18:14,563 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2236 transitions. [2023-12-24 16:18:14,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:18:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2236 transitions. [2023-12-24 16:18:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 16:18:14,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:18:14,564 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:18:14,573 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 (51)] Ended with exit code 0 [2023-12-24 16:18:14,772 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 16:18:14,773 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:18:14,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:18:14,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1870605807, now seen corresponding path program 1 times [2023-12-24 16:18:14,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:18:14,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90335963] [2023-12-24 16:18:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:14,774 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 16:18:14,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:18:14,784 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 16:18:14,812 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 16:18:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:15,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:18:15,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:16,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:18:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:18:16,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:18:17,533 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:18:17,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 62 [2023-12-24 16:18:17,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:18:17,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90335963] [2023-12-24 16:18:17,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90335963] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:18:17,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [275154573] [2023-12-24 16:18:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:17,822 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:18:17,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:18:17,823 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:18:17,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2023-12-24 16:18:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:18,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 16:18:18,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:20,482 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 16:18:21,186 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 16:18:22,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 16:18:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:18:22,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:18:22,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 74 [2023-12-24 16:18:22,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [275154573] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:18:22,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:18:22,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-12-24 16:18:22,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076619606] [2023-12-24 16:18:22,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:18:22,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 16:18:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:18:22,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 16:18:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1001, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:18:22,753 INFO L87 Difference]: Start difference. First operand 1758 states and 2236 transitions. Second operand has 25 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 21 states have internal predecessors, (107), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-24 16:18:27,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:18:27,800 INFO L93 Difference]: Finished difference Result 4623 states and 5806 transitions. [2023-12-24 16:18:27,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 16:18:27,802 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 21 states have internal predecessors, (107), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 150 [2023-12-24 16:18:27,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:18:27,804 INFO L225 Difference]: With dead ends: 4623 [2023-12-24 16:18:27,804 INFO L226 Difference]: Without dead ends: 2890 [2023-12-24 16:18:27,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 397 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=535, Invalid=2327, Unknown=0, NotChecked=0, Total=2862 [2023-12-24 16:18:27,807 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 699 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 133 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:18:27,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 2719 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2539 Invalid, 2 Unknown, 0 Unchecked, 3.2s Time] [2023-12-24 16:18:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2023-12-24 16:18:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1678. [2023-12-24 16:18:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1480 states have (on average 1.2493243243243244) internal successors, (1849), 1488 states have internal predecessors, (1849), 138 states have call successors, (138), 59 states have call predecessors, (138), 59 states have return successors, (138), 130 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-24 16:18:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2125 transitions. [2023-12-24 16:18:28,034 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2125 transitions. Word has length 150 [2023-12-24 16:18:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:18:28,034 INFO L495 AbstractCegarLoop]: Abstraction has 1678 states and 2125 transitions. [2023-12-24 16:18:28,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 21 states have internal predecessors, (107), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-24 16:18:28,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2125 transitions. [2023-12-24 16:18:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 16:18:28,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:18:28,036 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:18:28,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Forceful destruction successful, exit code 0 [2023-12-24 16:18:28,254 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 (52)] Ended with exit code 0 [2023-12-24 16:18:28,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:18:28,454 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:18:28,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:18:28,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1909740284, now seen corresponding path program 1 times [2023-12-24 16:18:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:18:28,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043696704] [2023-12-24 16:18:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:28,455 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 16:18:28,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:18:28,456 INFO L229 MonitoredProcess]: Starting monitored process 54 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 16:18:28,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2023-12-24 16:18:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:28,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 16:18:28,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:31,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-24 16:18:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 4 proven. 320 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 16:18:31,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:18:32,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:18:32,407 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 88 treesize of output 63 [2023-12-24 16:18:33,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:18:33,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043696704] [2023-12-24 16:18:33,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043696704] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:18:33,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [771801147] [2023-12-24 16:18:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:33,085 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:18:33,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:18:33,088 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:18:33,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2023-12-24 16:18:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:34,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 16:18:34,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:35,698 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 16:18:36,414 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 16:18:38,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-24 16:18:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 4 proven. 320 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 16:18:39,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:18:39,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 72 [2023-12-24 16:18:40,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [771801147] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:18:40,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:18:40,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-12-24 16:18:40,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655050210] [2023-12-24 16:18:40,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:18:40,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 16:18:40,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:18:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 16:18:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 16:18:40,021 INFO L87 Difference]: Start difference. First operand 1678 states and 2125 transitions. Second operand has 28 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 25 states have internal predecessors, (122), 8 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2023-12-24 16:18:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:18:44,533 INFO L93 Difference]: Finished difference Result 4793 states and 6025 transitions. [2023-12-24 16:18:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 16:18:44,534 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 25 states have internal predecessors, (122), 8 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) Word has length 151 [2023-12-24 16:18:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:18:44,537 INFO L225 Difference]: With dead ends: 4793 [2023-12-24 16:18:44,538 INFO L226 Difference]: Without dead ends: 3137 [2023-12-24 16:18:44,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=456, Invalid=2514, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 16:18:44,543 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 858 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:18:44,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1507 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 16:18:44,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states. [2023-12-24 16:18:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 1767. [2023-12-24 16:18:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1553 states have (on average 1.2472633612363169) internal successors, (1937), 1561 states have internal predecessors, (1937), 148 states have call successors, (148), 65 states have call predecessors, (148), 65 states have return successors, (148), 140 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-24 16:18:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2233 transitions. [2023-12-24 16:18:44,832 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2233 transitions. Word has length 151 [2023-12-24 16:18:44,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:18:44,833 INFO L495 AbstractCegarLoop]: Abstraction has 1767 states and 2233 transitions. [2023-12-24 16:18:44,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 25 states have internal predecessors, (122), 8 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2023-12-24 16:18:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2233 transitions. [2023-12-24 16:18:44,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 16:18:44,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:18:44,834 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:18:44,842 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 (54)] Forceful destruction successful, exit code 0 [2023-12-24 16:18:45,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (55)] Ended with exit code 0 [2023-12-24 16:18:45,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:18:45,251 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:18:45,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:18:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash 699047174, now seen corresponding path program 1 times [2023-12-24 16:18:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:18:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439476974] [2023-12-24 16:18:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:45,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:18:45,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:18:45,253 INFO L229 MonitoredProcess]: Starting monitored process 56 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 16:18:45,253 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 (56)] Waiting until timeout for monitored process [2023-12-24 16:18:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:45,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:18:45,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-24 16:18:45,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:18:45,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:18:45,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439476974] [2023-12-24 16:18:45,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439476974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:18:45,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:18:45,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:18:45,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839627962] [2023-12-24 16:18:45,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:18:45,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:18:45,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:18:45,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:18:45,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:18:45,655 INFO L87 Difference]: Start difference. First operand 1767 states and 2233 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:18:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:18:46,007 INFO L93 Difference]: Finished difference Result 3515 states and 4424 transitions. [2023-12-24 16:18:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:18:46,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 151 [2023-12-24 16:18:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:18:46,009 INFO L225 Difference]: With dead ends: 3515 [2023-12-24 16:18:46,009 INFO L226 Difference]: Without dead ends: 1765 [2023-12-24 16:18:46,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:18:46,011 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 7 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:18:46,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 658 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:18:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2023-12-24 16:18:46,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1393. [2023-12-24 16:18:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1235 states have (on average 1.248582995951417) internal successors, (1542), 1240 states have internal predecessors, (1542), 108 states have call successors, (108), 49 states have call predecessors, (108), 49 states have return successors, (108), 103 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:18:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1758 transitions. [2023-12-24 16:18:46,199 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1758 transitions. Word has length 151 [2023-12-24 16:18:46,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:18:46,199 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 1758 transitions. [2023-12-24 16:18:46,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:18:46,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1758 transitions. [2023-12-24 16:18:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 16:18:46,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:18:46,200 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:18:46,210 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 (56)] Forceful destruction successful, exit code 0 [2023-12-24 16:18:46,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:18:46,408 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:18:46,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:18:46,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1706294863, now seen corresponding path program 1 times [2023-12-24 16:18:46,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:18:46,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96306560] [2023-12-24 16:18:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:46,409 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 16:18:46,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:18:46,410 INFO L229 MonitoredProcess]: Starting monitored process 57 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 16:18:46,411 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 (57)] Waiting until timeout for monitored process [2023-12-24 16:18:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:46,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:18:46,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:47,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 38 [2023-12-24 16:18:47,471 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 15 treesize of output 1 [2023-12-24 16:18:47,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 38 [2023-12-24 16:18:47,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:18:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:18:47,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:18:48,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 44 [2023-12-24 16:18:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:18:48,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:18:48,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96306560] [2023-12-24 16:18:48,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96306560] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:18:48,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:18:48,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2023-12-24 16:18:48,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193734872] [2023-12-24 16:18:48,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:18:48,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:18:48,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:18:48,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:18:48,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:18:48,283 INFO L87 Difference]: Start difference. First operand 1393 states and 1758 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:18:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:18:50,674 INFO L93 Difference]: Finished difference Result 3174 states and 4034 transitions. [2023-12-24 16:18:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:18:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 151 [2023-12-24 16:18:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:18:50,678 INFO L225 Difference]: With dead ends: 3174 [2023-12-24 16:18:50,678 INFO L226 Difference]: Without dead ends: 1806 [2023-12-24 16:18:50,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:18:50,680 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 133 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:18:50,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1191 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 16:18:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2023-12-24 16:18:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1357. [2023-12-24 16:18:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1199 states have (on average 1.2460383653044202) internal successors, (1494), 1204 states have internal predecessors, (1494), 108 states have call successors, (108), 49 states have call predecessors, (108), 49 states have return successors, (108), 103 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:18:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1710 transitions. [2023-12-24 16:18:50,881 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1710 transitions. Word has length 151 [2023-12-24 16:18:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:18:50,882 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 1710 transitions. [2023-12-24 16:18:50,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:18:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1710 transitions. [2023-12-24 16:18:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 16:18:50,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:18:50,883 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:18:50,891 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 (57)] Ended with exit code 0 [2023-12-24 16:18:51,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:18:51,089 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:18:51,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:18:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash 272563640, now seen corresponding path program 1 times [2023-12-24 16:18:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:18:51,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529753040] [2023-12-24 16:18:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:51,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:18:51,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:18:51,091 INFO L229 MonitoredProcess]: Starting monitored process 58 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 16:18:51,092 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 (58)] Waiting until timeout for monitored process [2023-12-24 16:18:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:51,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:18:51,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:51,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 31 [2023-12-24 16:18:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:18:51,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:18:51,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:18:51,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529753040] [2023-12-24 16:18:51,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529753040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:18:51,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:18:51,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:18:51,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903951477] [2023-12-24 16:18:51,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:18:51,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:18:51,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:18:51,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:18:51,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:18:51,839 INFO L87 Difference]: Start difference. First operand 1357 states and 1710 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:18:54,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:18:54,446 INFO L93 Difference]: Finished difference Result 3225 states and 4051 transitions. [2023-12-24 16:18:54,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:18:54,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 151 [2023-12-24 16:18:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:18:54,449 INFO L225 Difference]: With dead ends: 3225 [2023-12-24 16:18:54,449 INFO L226 Difference]: Without dead ends: 1893 [2023-12-24 16:18:54,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:18:54,451 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 361 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:18:54,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 671 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 16:18:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2023-12-24 16:18:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1407. [2023-12-24 16:18:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1249 states have (on average 1.2417934347477981) internal successors, (1551), 1254 states have internal predecessors, (1551), 108 states have call successors, (108), 49 states have call predecessors, (108), 49 states have return successors, (108), 103 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:18:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1767 transitions. [2023-12-24 16:18:54,644 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1767 transitions. Word has length 151 [2023-12-24 16:18:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:18:54,644 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 1767 transitions. [2023-12-24 16:18:54,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:18:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1767 transitions. [2023-12-24 16:18:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 16:18:54,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:18:54,646 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:18:54,653 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 (58)] Ended with exit code 0 [2023-12-24 16:18:54,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:18:54,854 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:18:54,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:18:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash 665590650, now seen corresponding path program 1 times [2023-12-24 16:18:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:18:54,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913813372] [2023-12-24 16:18:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:54,855 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 16:18:54,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:18:54,856 INFO L229 MonitoredProcess]: Starting monitored process 59 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 16:18:54,856 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 (59)] Waiting until timeout for monitored process [2023-12-24 16:18:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:55,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:18:55,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:55,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:18:56,134 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 16:18:56,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 92 [2023-12-24 16:18:56,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 71 [2023-12-24 16:18:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:18:56,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:18:56,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 60 [2023-12-24 16:18:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:18:56,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:18:56,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913813372] [2023-12-24 16:18:56,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913813372] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:18:56,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:18:56,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2023-12-24 16:18:56,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996533981] [2023-12-24 16:18:56,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:18:56,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:18:56,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:18:56,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:18:56,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:18:56,721 INFO L87 Difference]: Start difference. First operand 1407 states and 1767 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:18:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:18:57,563 INFO L93 Difference]: Finished difference Result 3504 states and 4366 transitions. [2023-12-24 16:18:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:18:57,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 151 [2023-12-24 16:18:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:18:57,567 INFO L225 Difference]: With dead ends: 3504 [2023-12-24 16:18:57,567 INFO L226 Difference]: Without dead ends: 2122 [2023-12-24 16:18:57,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:18:57,568 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 345 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:18:57,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1206 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:18:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2023-12-24 16:18:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1613. [2023-12-24 16:18:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1455 states have (on average 1.2268041237113403) internal successors, (1785), 1460 states have internal predecessors, (1785), 108 states have call successors, (108), 49 states have call predecessors, (108), 49 states have return successors, (108), 103 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:18:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2001 transitions. [2023-12-24 16:18:57,750 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2001 transitions. Word has length 151 [2023-12-24 16:18:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:18:57,751 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2001 transitions. [2023-12-24 16:18:57,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:18:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2001 transitions. [2023-12-24 16:18:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 16:18:57,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:18:57,752 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:18:57,760 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 (59)] Ended with exit code 0 [2023-12-24 16:18:57,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:18:57,954 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:18:57,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:18:57,954 INFO L85 PathProgramCache]: Analyzing trace with hash 849769520, now seen corresponding path program 1 times [2023-12-24 16:18:57,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:18:57,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625908452] [2023-12-24 16:18:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:18:57,954 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 16:18:57,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:18:57,955 INFO L229 MonitoredProcess]: Starting monitored process 60 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 16:18:57,956 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 (60)] Waiting until timeout for monitored process [2023-12-24 16:18:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:18:58,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 16:18:58,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:18:59,521 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 16:18:59,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 64 [2023-12-24 16:18:59,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 47 [2023-12-24 16:18:59,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:18:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 5 proven. 303 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:18:59,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:00,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 60 [2023-12-24 16:19:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:19:00,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:00,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625908452] [2023-12-24 16:19:00,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625908452] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:00,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:19:00,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 24 [2023-12-24 16:19:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96561233] [2023-12-24 16:19:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:00,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:19:00,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:19:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-12-24 16:19:00,828 INFO L87 Difference]: Start difference. First operand 1613 states and 2001 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:04,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:04,421 INFO L93 Difference]: Finished difference Result 3707 states and 4619 transitions. [2023-12-24 16:19:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:19:04,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 151 [2023-12-24 16:19:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:04,424 INFO L225 Difference]: With dead ends: 3707 [2023-12-24 16:19:04,424 INFO L226 Difference]: Without dead ends: 2119 [2023-12-24 16:19:04,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:19:04,426 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 399 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 102 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:04,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 725 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 460 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 16:19:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2023-12-24 16:19:04,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 1610. [2023-12-24 16:19:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1452 states have (on average 1.225206611570248) internal successors, (1779), 1457 states have internal predecessors, (1779), 108 states have call successors, (108), 49 states have call predecessors, (108), 49 states have return successors, (108), 103 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:19:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1995 transitions. [2023-12-24 16:19:04,630 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1995 transitions. Word has length 151 [2023-12-24 16:19:04,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:04,630 INFO L495 AbstractCegarLoop]: Abstraction has 1610 states and 1995 transitions. [2023-12-24 16:19:04,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:04,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1995 transitions. [2023-12-24 16:19:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 16:19:04,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:04,632 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:04,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2023-12-24 16:19:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:04,839 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:04,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:04,840 INFO L85 PathProgramCache]: Analyzing trace with hash 442194000, now seen corresponding path program 1 times [2023-12-24 16:19:04,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:04,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031736876] [2023-12-24 16:19:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:04,840 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 16:19:04,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:04,842 INFO L229 MonitoredProcess]: Starting monitored process 61 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 16:19:04,842 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 (61)] Waiting until timeout for monitored process [2023-12-24 16:19:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:05,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:19:05,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:06,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:19:06,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 10 [2023-12-24 16:19:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 31 proven. 401 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:19:06,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:06,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:19:06,712 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 20 treesize of output 23 [2023-12-24 16:19:07,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:19:07,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 42 [2023-12-24 16:19:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-12-24 16:19:07,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031736876] [2023-12-24 16:19:07,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031736876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:19:07,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:19:07,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2023-12-24 16:19:07,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292686482] [2023-12-24 16:19:07,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:19:07,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 16:19:07,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:07,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 16:19:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:19:07,483 INFO L87 Difference]: Start difference. First operand 1610 states and 1995 transitions. Second operand has 31 states, 25 states have (on average 4.92) internal successors, (123), 27 states have internal predecessors, (123), 11 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (36), 7 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 16:19:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:08,837 INFO L93 Difference]: Finished difference Result 3257 states and 4020 transitions. [2023-12-24 16:19:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 16:19:08,838 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 4.92) internal successors, (123), 27 states have internal predecessors, (123), 11 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (36), 7 states have call predecessors, (36), 11 states have call successors, (36) Word has length 152 [2023-12-24 16:19:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:08,839 INFO L225 Difference]: With dead ends: 3257 [2023-12-24 16:19:08,839 INFO L226 Difference]: Without dead ends: 1672 [2023-12-24 16:19:08,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=524, Invalid=1732, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 16:19:08,841 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 726 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:08,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1266 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:19:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2023-12-24 16:19:08,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1031. [2023-12-24 16:19:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 939 states have (on average 1.2129925452609158) internal successors, (1139), 943 states have internal predecessors, (1139), 61 states have call successors, (61), 30 states have call predecessors, (61), 30 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-24 16:19:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1261 transitions. [2023-12-24 16:19:08,993 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1261 transitions. Word has length 152 [2023-12-24 16:19:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:08,993 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1261 transitions. [2023-12-24 16:19:08,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 4.92) internal successors, (123), 27 states have internal predecessors, (123), 11 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (36), 7 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 16:19:08,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1261 transitions. [2023-12-24 16:19:08,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 16:19:08,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:08,995 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:09,003 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 (61)] Forceful destruction successful, exit code 0 [2023-12-24 16:19:09,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:09,203 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:09,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:09,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1363244334, now seen corresponding path program 1 times [2023-12-24 16:19:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:09,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203391477] [2023-12-24 16:19:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:09,204 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 16:19:09,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:09,206 INFO L229 MonitoredProcess]: Starting monitored process 62 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 16:19:09,206 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 (62)] Waiting until timeout for monitored process [2023-12-24 16:19:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:09,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 16:19:09,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:10,440 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 16:19:10,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:19:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:19:10,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:11,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 44 [2023-12-24 16:19:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:19:11,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:11,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203391477] [2023-12-24 16:19:11,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203391477] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:11,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:19:11,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12] total 25 [2023-12-24 16:19:11,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787572232] [2023-12-24 16:19:11,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:11,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 16:19:11,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:11,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 16:19:11,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:19:11,594 INFO L87 Difference]: Start difference. First operand 1031 states and 1261 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:16,279 INFO L93 Difference]: Finished difference Result 2440 states and 2985 transitions. [2023-12-24 16:19:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:19:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 152 [2023-12-24 16:19:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:16,283 INFO L225 Difference]: With dead ends: 2440 [2023-12-24 16:19:16,283 INFO L226 Difference]: Without dead ends: 1406 [2023-12-24 16:19:16,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 16:19:16,284 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 386 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 52 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:16,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 2357 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 811 Invalid, 11 Unknown, 0 Unchecked, 3.5s Time] [2023-12-24 16:19:16,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2023-12-24 16:19:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1031. [2023-12-24 16:19:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 939 states have (on average 1.2108626198083068) internal successors, (1137), 943 states have internal predecessors, (1137), 61 states have call successors, (61), 30 states have call predecessors, (61), 30 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-24 16:19:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1259 transitions. [2023-12-24 16:19:16,453 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1259 transitions. Word has length 152 [2023-12-24 16:19:16,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:16,453 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1259 transitions. [2023-12-24 16:19:16,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1259 transitions. [2023-12-24 16:19:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 16:19:16,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:16,454 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:16,466 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 (62)] Forceful destruction successful, exit code 0 [2023-12-24 16:19:16,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:16,666 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:16,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1268994089, now seen corresponding path program 1 times [2023-12-24 16:19:16,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:16,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36563090] [2023-12-24 16:19:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:16,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:16,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:16,669 INFO L229 MonitoredProcess]: Starting monitored process 63 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 16:19:16,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2023-12-24 16:19:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:17,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:19:17,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:17,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:19:17,860 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 16:19:18,004 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 96 treesize of output 48 [2023-12-24 16:19:18,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:19:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 5 proven. 303 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:19:18,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:18,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 45 [2023-12-24 16:19:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:19:18,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:18,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36563090] [2023-12-24 16:19:18,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36563090] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:18,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:19:18,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 23 [2023-12-24 16:19:18,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276015259] [2023-12-24 16:19:18,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:18,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:19:18,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:19:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:19:18,919 INFO L87 Difference]: Start difference. First operand 1031 states and 1259 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:25,004 INFO L93 Difference]: Finished difference Result 2528 states and 3114 transitions. [2023-12-24 16:19:25,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 16:19:25,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 152 [2023-12-24 16:19:25,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:25,007 INFO L225 Difference]: With dead ends: 2528 [2023-12-24 16:19:25,007 INFO L226 Difference]: Without dead ends: 1522 [2023-12-24 16:19:25,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=197, Invalid=1209, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 16:19:25,008 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 386 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:25,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1250 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-24 16:19:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2023-12-24 16:19:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 975. [2023-12-24 16:19:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 883 states have (on average 1.2049830124575311) internal successors, (1064), 887 states have internal predecessors, (1064), 61 states have call successors, (61), 30 states have call predecessors, (61), 30 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-24 16:19:25,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1186 transitions. [2023-12-24 16:19:25,164 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1186 transitions. Word has length 152 [2023-12-24 16:19:25,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:25,164 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1186 transitions. [2023-12-24 16:19:25,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:25,165 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1186 transitions. [2023-12-24 16:19:25,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 16:19:25,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:25,166 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:25,173 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 (63)] Ended with exit code 0 [2023-12-24 16:19:25,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:25,372 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:25,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:25,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1909112197, now seen corresponding path program 1 times [2023-12-24 16:19:25,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:25,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713834099] [2023-12-24 16:19:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:25,373 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 16:19:25,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:25,375 INFO L229 MonitoredProcess]: Starting monitored process 64 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 16:19:25,375 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 (64)] Waiting until timeout for monitored process [2023-12-24 16:19:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:25,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:19:25,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:26,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 33 [2023-12-24 16:19:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 5 proven. 303 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:19:26,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:19:26,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:26,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713834099] [2023-12-24 16:19:26,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713834099] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:26,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:19:26,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-24 16:19:26,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81608833] [2023-12-24 16:19:26,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:26,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:19:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:19:26,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:19:26,752 INFO L87 Difference]: Start difference. First operand 975 states and 1186 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:27,367 INFO L93 Difference]: Finished difference Result 2363 states and 2872 transitions. [2023-12-24 16:19:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:19:27,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 152 [2023-12-24 16:19:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:27,369 INFO L225 Difference]: With dead ends: 2363 [2023-12-24 16:19:27,369 INFO L226 Difference]: Without dead ends: 1413 [2023-12-24 16:19:27,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:19:27,371 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 107 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:27,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 677 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:19:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2023-12-24 16:19:27,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 975. [2023-12-24 16:19:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 883 states have (on average 1.1981879954699888) internal successors, (1058), 887 states have internal predecessors, (1058), 61 states have call successors, (61), 30 states have call predecessors, (61), 30 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-24 16:19:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1180 transitions. [2023-12-24 16:19:27,540 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1180 transitions. Word has length 152 [2023-12-24 16:19:27,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:27,541 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1180 transitions. [2023-12-24 16:19:27,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1180 transitions. [2023-12-24 16:19:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 16:19:27,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:27,542 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:27,552 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 (64)] Forceful destruction successful, exit code 0 [2023-12-24 16:19:27,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:27,750 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:27,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1568206649, now seen corresponding path program 1 times [2023-12-24 16:19:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:27,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418902540] [2023-12-24 16:19:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:27,766 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 16:19:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:27,767 INFO L229 MonitoredProcess]: Starting monitored process 65 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 16:19:27,803 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 (65)] Waiting until timeout for monitored process [2023-12-24 16:19:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:28,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 16:19:28,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:28,910 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 16:19:29,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:19:29,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2023-12-24 16:19:29,447 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:19:29,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:19:30,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:30,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418902540] [2023-12-24 16:19:30,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418902540] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:30,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:19:30,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 25 [2023-12-24 16:19:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202828032] [2023-12-24 16:19:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:30,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:19:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:19:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:19:30,758 INFO L87 Difference]: Start difference. First operand 975 states and 1180 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:38,201 INFO L93 Difference]: Finished difference Result 2239 states and 2719 transitions. [2023-12-24 16:19:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 16:19:38,201 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 152 [2023-12-24 16:19:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:38,202 INFO L225 Difference]: With dead ends: 2239 [2023-12-24 16:19:38,202 INFO L226 Difference]: Without dead ends: 1289 [2023-12-24 16:19:38,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 277 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:19:38,203 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 418 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:38,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 2776 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 597 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2023-12-24 16:19:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-12-24 16:19:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 973. [2023-12-24 16:19:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 881 states have (on average 1.1963677639046537) internal successors, (1054), 885 states have internal predecessors, (1054), 61 states have call successors, (61), 30 states have call predecessors, (61), 30 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-24 16:19:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1176 transitions. [2023-12-24 16:19:38,362 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1176 transitions. Word has length 152 [2023-12-24 16:19:38,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:38,362 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1176 transitions. [2023-12-24 16:19:38,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1176 transitions. [2023-12-24 16:19:38,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:19:38,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:38,364 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:38,372 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 (65)] Forceful destruction successful, exit code 0 [2023-12-24 16:19:38,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:38,570 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:38,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:38,570 INFO L85 PathProgramCache]: Analyzing trace with hash 46213392, now seen corresponding path program 1 times [2023-12-24 16:19:38,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:38,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466238287] [2023-12-24 16:19:38,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:38,571 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 16:19:38,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:38,572 INFO L229 MonitoredProcess]: Starting monitored process 66 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 16:19:38,605 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 (66)] Waiting until timeout for monitored process [2023-12-24 16:19:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:39,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 16:19:39,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:39,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 33 [2023-12-24 16:19:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:19:39,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:19:39,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:39,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466238287] [2023-12-24 16:19:39,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466238287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:19:39,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:19:39,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:19:39,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984223162] [2023-12-24 16:19:39,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:39,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:19:39,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:39,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:19:39,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:19:39,287 INFO L87 Difference]: Start difference. First operand 973 states and 1176 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:40,411 INFO L93 Difference]: Finished difference Result 2167 states and 2635 transitions. [2023-12-24 16:19:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:19:40,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 153 [2023-12-24 16:19:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:40,413 INFO L225 Difference]: With dead ends: 2167 [2023-12-24 16:19:40,413 INFO L226 Difference]: Without dead ends: 1219 [2023-12-24 16:19:40,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:19:40,414 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 202 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:40,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 619 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:19:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-24 16:19:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 959. [2023-12-24 16:19:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 867 states have (on average 1.1983852364475203) internal successors, (1039), 871 states have internal predecessors, (1039), 61 states have call successors, (61), 30 states have call predecessors, (61), 30 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-24 16:19:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1161 transitions. [2023-12-24 16:19:40,591 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1161 transitions. Word has length 153 [2023-12-24 16:19:40,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:40,591 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1161 transitions. [2023-12-24 16:19:40,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1161 transitions. [2023-12-24 16:19:40,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:19:40,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:40,592 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:40,600 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 (66)] Ended with exit code 0 [2023-12-24 16:19:40,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:40,799 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:40,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash 439240402, now seen corresponding path program 1 times [2023-12-24 16:19:40,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:40,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42505248] [2023-12-24 16:19:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:40,800 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 16:19:40,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:40,801 INFO L229 MonitoredProcess]: Starting monitored process 67 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 16:19:40,802 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 (67)] Waiting until timeout for monitored process [2023-12-24 16:19:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:41,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:19:41,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:41,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:19:42,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 92 [2023-12-24 16:19:42,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 89 [2023-12-24 16:19:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:19:42,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:19:42,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42505248] [2023-12-24 16:19:42,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42505248] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:42,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:19:42,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-12-24 16:19:42,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996781023] [2023-12-24 16:19:42,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:42,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:19:42,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:19:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:19:42,356 INFO L87 Difference]: Start difference. First operand 959 states and 1161 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:43,615 INFO L93 Difference]: Finished difference Result 2332 states and 2831 transitions. [2023-12-24 16:19:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:19:43,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 153 [2023-12-24 16:19:43,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:43,618 INFO L225 Difference]: With dead ends: 2332 [2023-12-24 16:19:43,618 INFO L226 Difference]: Without dead ends: 1398 [2023-12-24 16:19:43,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:19:43,619 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 211 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:43,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1001 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:19:43,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2023-12-24 16:19:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 937. [2023-12-24 16:19:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 845 states have (on average 1.1988165680473373) internal successors, (1013), 849 states have internal predecessors, (1013), 61 states have call successors, (61), 30 states have call predecessors, (61), 30 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-24 16:19:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1135 transitions. [2023-12-24 16:19:43,791 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1135 transitions. Word has length 153 [2023-12-24 16:19:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:43,791 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1135 transitions. [2023-12-24 16:19:43,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1135 transitions. [2023-12-24 16:19:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:19:43,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:43,792 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:43,803 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 (67)] Forceful destruction successful, exit code 0 [2023-12-24 16:19:44,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:44,000 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:44,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1206149195, now seen corresponding path program 1 times [2023-12-24 16:19:44,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:44,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452604511] [2023-12-24 16:19:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:44,002 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 16:19:44,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:44,003 INFO L229 MonitoredProcess]: Starting monitored process 68 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 16:19:44,004 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 (68)] Waiting until timeout for monitored process [2023-12-24 16:19:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:44,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:19:44,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:44,779 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 16:19:44,960 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 54 treesize of output 42 [2023-12-24 16:19:44,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 39 [2023-12-24 16:19:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 16:19:44,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:19:45,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:45,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452604511] [2023-12-24 16:19:45,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452604511] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:45,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:19:45,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2023-12-24 16:19:45,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85175315] [2023-12-24 16:19:45,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:45,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:19:45,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:19:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:19:45,135 INFO L87 Difference]: Start difference. First operand 937 states and 1135 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:45,557 INFO L93 Difference]: Finished difference Result 1736 states and 2096 transitions. [2023-12-24 16:19:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:19:45,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 153 [2023-12-24 16:19:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:45,560 INFO L225 Difference]: With dead ends: 1736 [2023-12-24 16:19:45,560 INFO L226 Difference]: Without dead ends: 1734 [2023-12-24 16:19:45,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:19:45,560 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 140 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:45,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 735 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:19:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-12-24 16:19:45,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1728. [2023-12-24 16:19:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1566 states have (on average 1.194125159642401) internal successors, (1870), 1577 states have internal predecessors, (1870), 108 states have call successors, (108), 53 states have call predecessors, (108), 53 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:19:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2086 transitions. [2023-12-24 16:19:45,876 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2086 transitions. Word has length 153 [2023-12-24 16:19:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:45,876 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2086 transitions. [2023-12-24 16:19:45,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2086 transitions. [2023-12-24 16:19:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:19:45,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:45,878 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:45,887 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 (68)] Forceful destruction successful, exit code 0 [2023-12-24 16:19:46,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:46,086 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:46,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:46,086 INFO L85 PathProgramCache]: Analyzing trace with hash 645691200, now seen corresponding path program 1 times [2023-12-24 16:19:46,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:46,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29685426] [2023-12-24 16:19:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:46,087 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 16:19:46,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:46,088 INFO L229 MonitoredProcess]: Starting monitored process 69 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 16:19:46,089 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 (69)] Waiting until timeout for monitored process [2023-12-24 16:19:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:46,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:19:46,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:47,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:19:47,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 10 [2023-12-24 16:19:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 31 proven. 401 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:19:47,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:48,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:19:48,020 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 20 treesize of output 23 [2023-12-24 16:19:48,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:19:48,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 42 [2023-12-24 16:19:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-12-24 16:19:48,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:48,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29685426] [2023-12-24 16:19:48,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29685426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:19:48,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:19:48,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2023-12-24 16:19:48,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864352096] [2023-12-24 16:19:48,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:19:48,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 16:19:48,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:48,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 16:19:48,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:19:48,753 INFO L87 Difference]: Start difference. First operand 1728 states and 2086 transitions. Second operand has 31 states, 25 states have (on average 5.6) internal successors, (140), 27 states have internal predecessors, (140), 11 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (36), 7 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 16:19:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:50,246 INFO L93 Difference]: Finished difference Result 3577 states and 4330 transitions. [2023-12-24 16:19:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 16:19:50,248 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 5.6) internal successors, (140), 27 states have internal predecessors, (140), 11 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (36), 7 states have call predecessors, (36), 11 states have call successors, (36) Word has length 153 [2023-12-24 16:19:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:50,266 INFO L225 Difference]: With dead ends: 3577 [2023-12-24 16:19:50,266 INFO L226 Difference]: Without dead ends: 1874 [2023-12-24 16:19:50,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=524, Invalid=1732, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 16:19:50,267 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 602 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:50,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1518 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:19:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2023-12-24 16:19:50,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1728. [2023-12-24 16:19:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1566 states have (on average 1.1890166028097062) internal successors, (1862), 1577 states have internal predecessors, (1862), 108 states have call successors, (108), 53 states have call predecessors, (108), 53 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:19:50,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2078 transitions. [2023-12-24 16:19:50,598 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2078 transitions. Word has length 153 [2023-12-24 16:19:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:50,600 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2078 transitions. [2023-12-24 16:19:50,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 5.6) internal successors, (140), 27 states have internal predecessors, (140), 11 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (36), 7 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 16:19:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2078 transitions. [2023-12-24 16:19:50,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:19:50,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:50,602 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:50,610 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 (69)] Ended with exit code 0 [2023-12-24 16:19:50,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:50,810 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:50,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:50,811 INFO L85 PathProgramCache]: Analyzing trace with hash -163655426, now seen corresponding path program 1 times [2023-12-24 16:19:50,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:50,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750870995] [2023-12-24 16:19:50,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:50,811 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 16:19:50,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:50,812 INFO L229 MonitoredProcess]: Starting monitored process 70 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 16:19:50,814 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 (70)] Waiting until timeout for monitored process [2023-12-24 16:19:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:51,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:19:51,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:19:51,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:19:51,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:51,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750870995] [2023-12-24 16:19:51,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750870995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:19:51,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:19:51,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:19:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838175406] [2023-12-24 16:19:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:19:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:19:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:19:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:19:51,260 INFO L87 Difference]: Start difference. First operand 1728 states and 2078 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:51,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:19:51,616 INFO L93 Difference]: Finished difference Result 3527 states and 4264 transitions. [2023-12-24 16:19:51,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:19:51,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 153 [2023-12-24 16:19:51,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:19:51,618 INFO L225 Difference]: With dead ends: 3527 [2023-12-24 16:19:51,619 INFO L226 Difference]: Without dead ends: 1824 [2023-12-24 16:19:51,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:19:51,620 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 64 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:19:51,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 759 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:19:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2023-12-24 16:19:51,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1740. [2023-12-24 16:19:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1578 states have (on average 1.1875792141951838) internal successors, (1874), 1589 states have internal predecessors, (1874), 108 states have call successors, (108), 53 states have call predecessors, (108), 53 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:19:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2090 transitions. [2023-12-24 16:19:51,937 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2090 transitions. Word has length 153 [2023-12-24 16:19:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:19:51,937 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2090 transitions. [2023-12-24 16:19:51,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:19:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2090 transitions. [2023-12-24 16:19:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:19:51,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:19:51,939 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:19:51,950 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 (70)] Forceful destruction successful, exit code 0 [2023-12-24 16:19:52,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:19:52,148 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:19:52,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:19:52,148 INFO L85 PathProgramCache]: Analyzing trace with hash -439867830, now seen corresponding path program 1 times [2023-12-24 16:19:52,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:19:52,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856903556] [2023-12-24 16:19:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:52,149 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 16:19:52,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:19:52,150 INFO L229 MonitoredProcess]: Starting monitored process 71 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 16:19:52,150 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 (71)] Waiting until timeout for monitored process [2023-12-24 16:19:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:52,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:19:52,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:53,288 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 16:19:53,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 59 [2023-12-24 16:19:53,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:19:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 4 proven. 272 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 16:19:53,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:53,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:19:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856903556] [2023-12-24 16:19:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856903556] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [346556442] [2023-12-24 16:19:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:19:53,807 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:19:53,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:19:53,808 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:19:53,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2023-12-24 16:19:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:19:55,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 16:19:55,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:19:56,268 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 16:19:57,340 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 16:19:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 4 proven. 272 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 16:19:57,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:19:59,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [346556442] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:19:59,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:19:59,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2023-12-24 16:19:59,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889602321] [2023-12-24 16:19:59,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:19:59,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 16:19:59,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:19:59,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 16:19:59,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1739, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 16:19:59,779 INFO L87 Difference]: Start difference. First operand 1740 states and 2090 transitions. Second operand has 28 states, 26 states have (on average 4.846153846153846) internal successors, (126), 25 states have internal predecessors, (126), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 4 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-24 16:20:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:04,955 INFO L93 Difference]: Finished difference Result 4551 states and 5436 transitions. [2023-12-24 16:20:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 16:20:04,955 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.846153846153846) internal successors, (126), 25 states have internal predecessors, (126), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 4 states have call predecessors, (36), 6 states have call successors, (36) Word has length 153 [2023-12-24 16:20:04,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:04,958 INFO L225 Difference]: With dead ends: 4551 [2023-12-24 16:20:04,958 INFO L226 Difference]: Without dead ends: 2836 [2023-12-24 16:20:04,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 328 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=623, Invalid=3537, Unknown=0, NotChecked=0, Total=4160 [2023-12-24 16:20:04,959 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 487 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:04,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 2189 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 16:20:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2023-12-24 16:20:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 1720. [2023-12-24 16:20:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1556 states have (on average 1.1850899742930592) internal successors, (1844), 1567 states have internal predecessors, (1844), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:20:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2060 transitions. [2023-12-24 16:20:05,307 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2060 transitions. Word has length 153 [2023-12-24 16:20:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:20:05,308 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2060 transitions. [2023-12-24 16:20:05,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.846153846153846) internal successors, (126), 25 states have internal predecessors, (126), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 4 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-24 16:20:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2060 transitions. [2023-12-24 16:20:05,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 16:20:05,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:20:05,309 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:20:05,326 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 (71)] Forceful destruction successful, exit code 0 [2023-12-24 16:20:05,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (72)] Forceful destruction successful, exit code 0 [2023-12-24 16:20:05,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:20:05,729 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:20:05,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:20:05,729 INFO L85 PathProgramCache]: Analyzing trace with hash -830111659, now seen corresponding path program 1 times [2023-12-24 16:20:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:20:05,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264766173] [2023-12-24 16:20:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:05,730 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 16:20:05,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:20:05,730 INFO L229 MonitoredProcess]: Starting monitored process 73 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 16:20:05,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2023-12-24 16:20:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:06,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:20:06,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:06,915 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 16:20:07,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:20:07,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2023-12-24 16:20:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:20:07,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:20:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:20:08,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264766173] [2023-12-24 16:20:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264766173] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:20:08,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:20:08,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2023-12-24 16:20:08,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927601661] [2023-12-24 16:20:08,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:20:08,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:20:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:08,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:20:08,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:20:08,121 INFO L87 Difference]: Start difference. First operand 1720 states and 2060 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:11,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:11,916 INFO L93 Difference]: Finished difference Result 4039 states and 4848 transitions. [2023-12-24 16:20:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:20:11,918 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 153 [2023-12-24 16:20:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:11,920 INFO L225 Difference]: With dead ends: 4039 [2023-12-24 16:20:11,920 INFO L226 Difference]: Without dead ends: 2344 [2023-12-24 16:20:11,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:20:11,921 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 401 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:11,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 2334 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 16:20:11,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2023-12-24 16:20:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1704. [2023-12-24 16:20:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1540 states have (on average 1.1844155844155844) internal successors, (1824), 1551 states have internal predecessors, (1824), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:20:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2040 transitions. [2023-12-24 16:20:12,248 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2040 transitions. Word has length 153 [2023-12-24 16:20:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:20:12,248 INFO L495 AbstractCegarLoop]: Abstraction has 1704 states and 2040 transitions. [2023-12-24 16:20:12,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2040 transitions. [2023-12-24 16:20:12,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 16:20:12,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:20:12,250 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:20:12,260 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 (73)] Forceful destruction successful, exit code 0 [2023-12-24 16:20:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:20:12,458 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:20:12,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:20:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash 209832570, now seen corresponding path program 1 times [2023-12-24 16:20:12,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:20:12,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050491932] [2023-12-24 16:20:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:12,459 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 16:20:12,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:20:12,460 INFO L229 MonitoredProcess]: Starting monitored process 74 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 16:20:12,464 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 (74)] Waiting until timeout for monitored process [2023-12-24 16:20:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:12,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 16:20:12,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:15,463 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 16:20:16,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2023-12-24 16:20:17,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 50 [2023-12-24 16:20:17,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 41 [2023-12-24 16:20:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:20:18,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:20:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:20:20,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:20,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050491932] [2023-12-24 16:20:20,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050491932] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:20:20,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:20:20,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [26] total 38 [2023-12-24 16:20:20,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289110999] [2023-12-24 16:20:20,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:20:20,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:20:20,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:20,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:20:20,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 16:20:20,781 INFO L87 Difference]: Start difference. First operand 1704 states and 2040 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:25,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:25,628 INFO L93 Difference]: Finished difference Result 4617 states and 5641 transitions. [2023-12-24 16:20:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 16:20:25,629 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2023-12-24 16:20:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:25,632 INFO L225 Difference]: With dead ends: 4617 [2023-12-24 16:20:25,632 INFO L226 Difference]: Without dead ends: 2938 [2023-12-24 16:20:25,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=372, Invalid=2178, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 16:20:25,633 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 692 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:25,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1854 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 16:20:25,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2023-12-24 16:20:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1858. [2023-12-24 16:20:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1694 states have (on average 1.179456906729634) internal successors, (1998), 1705 states have internal predecessors, (1998), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:20:25,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2214 transitions. [2023-12-24 16:20:25,995 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2214 transitions. Word has length 154 [2023-12-24 16:20:25,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:20:25,995 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2214 transitions. [2023-12-24 16:20:25,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2214 transitions. [2023-12-24 16:20:25,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 16:20:25,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:20:25,997 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:20:26,006 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 (74)] Forceful destruction successful, exit code 0 [2023-12-24 16:20:26,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:20:26,206 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:20:26,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:20:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2109226008, now seen corresponding path program 1 times [2023-12-24 16:20:26,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:20:26,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100335976] [2023-12-24 16:20:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:26,207 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 16:20:26,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:20:26,208 INFO L229 MonitoredProcess]: Starting monitored process 75 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 16:20:26,209 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 (75)] Waiting until timeout for monitored process [2023-12-24 16:20:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:26,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:20:26,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:27,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 16:20:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:20:27,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:20:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:20:27,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:27,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100335976] [2023-12-24 16:20:27,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100335976] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:20:27,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:20:27,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-12-24 16:20:27,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811542259] [2023-12-24 16:20:27,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:20:27,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:20:27,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:27,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:20:27,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:20:27,729 INFO L87 Difference]: Start difference. First operand 1858 states and 2214 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:28,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:28,639 INFO L93 Difference]: Finished difference Result 4705 states and 5641 transitions. [2023-12-24 16:20:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:20:28,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2023-12-24 16:20:28,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:28,643 INFO L225 Difference]: With dead ends: 4705 [2023-12-24 16:20:28,643 INFO L226 Difference]: Without dead ends: 2872 [2023-12-24 16:20:28,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:20:28,646 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 199 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:28,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 391 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:20:28,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2023-12-24 16:20:28,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2142. [2023-12-24 16:20:28,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1978 states have (on average 1.16582406471183) internal successors, (2306), 1989 states have internal predecessors, (2306), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:20:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2522 transitions. [2023-12-24 16:20:28,992 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2522 transitions. Word has length 154 [2023-12-24 16:20:28,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:20:28,993 INFO L495 AbstractCegarLoop]: Abstraction has 2142 states and 2522 transitions. [2023-12-24 16:20:28,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2522 transitions. [2023-12-24 16:20:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 16:20:28,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:20:28,995 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:20:29,005 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 (75)] Ended with exit code 0 [2023-12-24 16:20:29,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:20:29,206 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:20:29,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:20:29,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1792714278, now seen corresponding path program 1 times [2023-12-24 16:20:29,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:20:29,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543947281] [2023-12-24 16:20:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:29,207 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 16:20:29,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:20:29,208 INFO L229 MonitoredProcess]: Starting monitored process 76 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 16:20:29,208 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 (76)] Waiting until timeout for monitored process [2023-12-24 16:20:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:29,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 16:20:29,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:30,411 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 16:20:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:20:30,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:20:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:20:31,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:31,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543947281] [2023-12-24 16:20:31,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543947281] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:20:31,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:20:31,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 22 [2023-12-24 16:20:31,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380963198] [2023-12-24 16:20:31,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:20:31,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:20:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:31,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:20:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:20:31,856 INFO L87 Difference]: Start difference. First operand 2142 states and 2522 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:35,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:35,279 INFO L93 Difference]: Finished difference Result 5327 states and 6381 transitions. [2023-12-24 16:20:35,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 16:20:35,280 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2023-12-24 16:20:35,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:35,283 INFO L225 Difference]: With dead ends: 5327 [2023-12-24 16:20:35,284 INFO L226 Difference]: Without dead ends: 3210 [2023-12-24 16:20:35,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=205, Invalid=917, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 16:20:35,285 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 388 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:35,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1916 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 16:20:35,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2023-12-24 16:20:35,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 2162. [2023-12-24 16:20:35,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 1998 states have (on average 1.1661661661661662) internal successors, (2330), 2009 states have internal predecessors, (2330), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:20:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 2546 transitions. [2023-12-24 16:20:35,632 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 2546 transitions. Word has length 154 [2023-12-24 16:20:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:20:35,632 INFO L495 AbstractCegarLoop]: Abstraction has 2162 states and 2546 transitions. [2023-12-24 16:20:35,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 2546 transitions. [2023-12-24 16:20:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 16:20:35,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:20:35,635 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:20:35,644 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 (76)] Forceful destruction successful, exit code 0 [2023-12-24 16:20:35,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:20:35,844 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:20:35,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:20:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1497700461, now seen corresponding path program 1 times [2023-12-24 16:20:35,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:20:35,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313179244] [2023-12-24 16:20:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:35,845 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 16:20:35,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:20:35,846 INFO L229 MonitoredProcess]: Starting monitored process 77 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 16:20:35,847 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 (77)] Waiting until timeout for monitored process [2023-12-24 16:20:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:36,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:20:36,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:37,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:20:37,171 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 16:20:37,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:20:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:20:37,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:20:38,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313179244] [2023-12-24 16:20:38,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313179244] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:20:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1769582321] [2023-12-24 16:20:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:38,078 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:20:38,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:20:38,079 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:20:38,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (78)] Waiting until timeout for monitored process [2023-12-24 16:20:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:39,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:20:39,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:39,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2023-12-24 16:20:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:20:39,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:20:39,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1769582321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:20:39,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:20:39,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-12-24 16:20:39,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404312713] [2023-12-24 16:20:39,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:20:39,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:20:39,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:39,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:20:39,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:20:39,668 INFO L87 Difference]: Start difference. First operand 2162 states and 2546 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:41,231 INFO L93 Difference]: Finished difference Result 5338 states and 6326 transitions. [2023-12-24 16:20:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:20:41,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2023-12-24 16:20:41,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:41,234 INFO L225 Difference]: With dead ends: 5338 [2023-12-24 16:20:41,234 INFO L226 Difference]: Without dead ends: 3201 [2023-12-24 16:20:41,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 323 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:20:41,236 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 180 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:41,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 839 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 16:20:41,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2023-12-24 16:20:41,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 2336. [2023-12-24 16:20:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2172 states have (on average 1.1556169429097607) internal successors, (2510), 2183 states have internal predecessors, (2510), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:20:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 2726 transitions. [2023-12-24 16:20:41,580 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 2726 transitions. Word has length 154 [2023-12-24 16:20:41,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:20:41,580 INFO L495 AbstractCegarLoop]: Abstraction has 2336 states and 2726 transitions. [2023-12-24 16:20:41,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:41,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 2726 transitions. [2023-12-24 16:20:41,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 16:20:41,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:20:41,583 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:20:41,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (78)] Forceful destruction successful, exit code 0 [2023-12-24 16:20:41,802 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 (77)] Forceful destruction successful, exit code 0 [2023-12-24 16:20:41,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:20:41,993 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:20:41,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:20:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1343436095, now seen corresponding path program 1 times [2023-12-24 16:20:41,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:20:41,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691961878] [2023-12-24 16:20:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:41,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:20:41,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:20:41,995 INFO L229 MonitoredProcess]: Starting monitored process 79 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 16:20:41,995 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 (79)] Waiting until timeout for monitored process [2023-12-24 16:20:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:42,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 16:20:42,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:43,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:20:44,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:20:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:20:44,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:20:44,948 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 65 treesize of output 41 [2023-12-24 16:20:45,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:45,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691961878] [2023-12-24 16:20:45,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691961878] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:20:45,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [785696861] [2023-12-24 16:20:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:45,265 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:20:45,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:20:45,266 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:20:45,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (80)] Waiting until timeout for monitored process [2023-12-24 16:20:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:46,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:20:46,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:46,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 16:20:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:20:46,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:20:46,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [785696861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:20:46,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:20:46,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 20 [2023-12-24 16:20:46,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084841608] [2023-12-24 16:20:46,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:20:46,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:20:46,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:20:46,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:20:46,803 INFO L87 Difference]: Start difference. First operand 2336 states and 2726 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:48,755 INFO L93 Difference]: Finished difference Result 5512 states and 6490 transitions. [2023-12-24 16:20:48,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:20:48,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 16:20:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:48,759 INFO L225 Difference]: With dead ends: 5512 [2023-12-24 16:20:48,759 INFO L226 Difference]: Without dead ends: 3201 [2023-12-24 16:20:48,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:20:48,760 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 175 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:48,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1128 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 16:20:48,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2023-12-24 16:20:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 2368. [2023-12-24 16:20:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2204 states have (on average 1.1533575317604357) internal successors, (2542), 2215 states have internal predecessors, (2542), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:20:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 2758 transitions. [2023-12-24 16:20:49,136 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 2758 transitions. Word has length 156 [2023-12-24 16:20:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:20:49,137 INFO L495 AbstractCegarLoop]: Abstraction has 2368 states and 2758 transitions. [2023-12-24 16:20:49,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 2758 transitions. [2023-12-24 16:20:49,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 16:20:49,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:20:49,139 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:20:49,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (80)] Forceful destruction successful, exit code 0 [2023-12-24 16:20:49,357 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 (79)] Ended with exit code 0 [2023-12-24 16:20:49,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:20:49,558 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:20:49,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:20:49,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2033898098, now seen corresponding path program 1 times [2023-12-24 16:20:49,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:20:49,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541658482] [2023-12-24 16:20:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:49,559 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 16:20:49,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:20:49,560 INFO L229 MonitoredProcess]: Starting monitored process 81 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 16:20:49,618 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 (81)] Waiting until timeout for monitored process [2023-12-24 16:20:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:50,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:20:50,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:50,885 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 70 treesize of output 34 [2023-12-24 16:20:50,932 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 16:20:51,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:20:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 16:20:51,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:20:51,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:51,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541658482] [2023-12-24 16:20:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541658482] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:20:51,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [976033175] [2023-12-24 16:20:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:51,870 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:20:51,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:20:51,871 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:20:51,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (82)] Waiting until timeout for monitored process [2023-12-24 16:20:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:52,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:20:52,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:53,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 16:20:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:20:53,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:20:53,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [976033175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:20:53,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:20:53,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-12-24 16:20:53,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463170913] [2023-12-24 16:20:53,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:20:53,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:20:53,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:53,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:20:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:20:53,691 INFO L87 Difference]: Start difference. First operand 2368 states and 2758 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:55,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:55,764 INFO L93 Difference]: Finished difference Result 5335 states and 6255 transitions. [2023-12-24 16:20:55,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:20:55,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 16:20:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:55,768 INFO L225 Difference]: With dead ends: 5335 [2023-12-24 16:20:55,768 INFO L226 Difference]: Without dead ends: 2992 [2023-12-24 16:20:55,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:20:55,770 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 154 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:55,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1070 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 2 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 16:20:55,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2023-12-24 16:20:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2296. [2023-12-24 16:20:56,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2132 states have (on average 1.1575984990619137) internal successors, (2468), 2143 states have internal predecessors, (2468), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:20:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 2684 transitions. [2023-12-24 16:20:56,120 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 2684 transitions. Word has length 156 [2023-12-24 16:20:56,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:20:56,121 INFO L495 AbstractCegarLoop]: Abstraction has 2296 states and 2684 transitions. [2023-12-24 16:20:56,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:56,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 2684 transitions. [2023-12-24 16:20:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 16:20:56,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:20:56,123 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:20:56,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (82)] Forceful destruction successful, exit code 0 [2023-12-24 16:20:56,341 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 (81)] Ended with exit code 0 [2023-12-24 16:20:56,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:20:56,536 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:20:56,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:20:56,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1581010828, now seen corresponding path program 1 times [2023-12-24 16:20:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:20:56,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623590363] [2023-12-24 16:20:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:56,537 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 16:20:56,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:20:56,538 INFO L229 MonitoredProcess]: Starting monitored process 83 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 16:20:56,539 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 (83)] Waiting until timeout for monitored process [2023-12-24 16:20:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:57,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:20:57,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:57,175 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 16:20:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:20:57,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:20:57,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623590363] [2023-12-24 16:20:57,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623590363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:20:57,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:20:57,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:20:57,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065388629] [2023-12-24 16:20:57,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:20:57,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:20:57,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:57,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:20:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:20:57,285 INFO L87 Difference]: Start difference. First operand 2296 states and 2684 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:58,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:58,438 INFO L93 Difference]: Finished difference Result 4955 states and 5795 transitions. [2023-12-24 16:20:58,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:20:58,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 16:20:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:58,442 INFO L225 Difference]: With dead ends: 4955 [2023-12-24 16:20:58,442 INFO L226 Difference]: Without dead ends: 2684 [2023-12-24 16:20:58,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:20:58,444 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 176 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:58,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 493 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:20:58,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2023-12-24 16:20:58,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2202. [2023-12-24 16:20:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2038 states have (on average 1.154072620215898) internal successors, (2352), 2049 states have internal predecessors, (2352), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:20:58,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2568 transitions. [2023-12-24 16:20:58,801 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2568 transitions. Word has length 156 [2023-12-24 16:20:58,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:20:58,801 INFO L495 AbstractCegarLoop]: Abstraction has 2202 states and 2568 transitions. [2023-12-24 16:20:58,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:58,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2568 transitions. [2023-12-24 16:20:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 16:20:58,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:20:58,803 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:20:58,812 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 (83)] Ended with exit code 0 [2023-12-24 16:20:59,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:20:59,011 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:20:59,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:20:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash 525757644, now seen corresponding path program 1 times [2023-12-24 16:20:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:20:59,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448677134] [2023-12-24 16:20:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:20:59,012 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 16:20:59,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:20:59,013 INFO L229 MonitoredProcess]: Starting monitored process 84 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 16:20:59,018 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 (84)] Waiting until timeout for monitored process [2023-12-24 16:20:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:20:59,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 16:20:59,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:20:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:20:59,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:20:59,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:20:59,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448677134] [2023-12-24 16:20:59,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448677134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:20:59,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:20:59,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 16:20:59,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509865418] [2023-12-24 16:20:59,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:20:59,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 16:20:59,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:20:59,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 16:20:59,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 16:20:59,462 INFO L87 Difference]: Start difference. First operand 2202 states and 2568 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:20:59,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:20:59,825 INFO L93 Difference]: Finished difference Result 4411 states and 5148 transitions. [2023-12-24 16:20:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 16:20:59,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 16:20:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:20:59,827 INFO L225 Difference]: With dead ends: 4411 [2023-12-24 16:20:59,827 INFO L226 Difference]: Without dead ends: 2234 [2023-12-24 16:20:59,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 16:20:59,829 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 6 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:20:59,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 306 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:20:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2023-12-24 16:21:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2210. [2023-12-24 16:21:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2046 states have (on average 1.1534701857282503) internal successors, (2360), 2057 states have internal predecessors, (2360), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:21:00,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 2576 transitions. [2023-12-24 16:21:00,176 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 2576 transitions. Word has length 156 [2023-12-24 16:21:00,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:00,176 INFO L495 AbstractCegarLoop]: Abstraction has 2210 states and 2576 transitions. [2023-12-24 16:21:00,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 2576 transitions. [2023-12-24 16:21:00,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 16:21:00,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:00,179 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:00,187 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 (84)] Ended with exit code 0 [2023-12-24 16:21:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:00,387 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:00,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:00,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1994202290, now seen corresponding path program 1 times [2023-12-24 16:21:00,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:00,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885363458] [2023-12-24 16:21:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:00,388 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 16:21:00,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:00,389 INFO L229 MonitoredProcess]: Starting monitored process 85 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 16:21:00,389 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 (85)] Waiting until timeout for monitored process [2023-12-24 16:21:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:00,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:21:00,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:01,227 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 16:21:01,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:21:01,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 39 [2023-12-24 16:21:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 16:21:01,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:01,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:01,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885363458] [2023-12-24 16:21:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885363458] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:01,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:01,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2023-12-24 16:21:01,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964869311] [2023-12-24 16:21:01,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:01,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:21:01,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:01,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:21:01,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:21:01,634 INFO L87 Difference]: Start difference. First operand 2210 states and 2576 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:02,122 INFO L93 Difference]: Finished difference Result 2234 states and 2602 transitions. [2023-12-24 16:21:02,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:21:02,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 16:21:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:02,125 INFO L225 Difference]: With dead ends: 2234 [2023-12-24 16:21:02,125 INFO L226 Difference]: Without dead ends: 2232 [2023-12-24 16:21:02,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:21:02,146 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 140 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:02,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 878 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:21:02,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2023-12-24 16:21:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2214. [2023-12-24 16:21:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2050 states have (on average 1.153170731707317) internal successors, (2364), 2061 states have internal predecessors, (2364), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:21:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 2580 transitions. [2023-12-24 16:21:02,491 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 2580 transitions. Word has length 156 [2023-12-24 16:21:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:02,491 INFO L495 AbstractCegarLoop]: Abstraction has 2214 states and 2580 transitions. [2023-12-24 16:21:02,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 2580 transitions. [2023-12-24 16:21:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 16:21:02,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:02,496 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:02,504 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 (85)] Ended with exit code 0 [2023-12-24 16:21:02,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:02,705 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:02,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:02,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1993565870, now seen corresponding path program 1 times [2023-12-24 16:21:02,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:02,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425868921] [2023-12-24 16:21:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:02,705 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 16:21:02,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:02,706 INFO L229 MonitoredProcess]: Starting monitored process 86 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 16:21:02,744 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 (86)] Waiting until timeout for monitored process [2023-12-24 16:21:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:03,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:21:03,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:03,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 16:21:03,281 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 16:21:03,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:21:03,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2023-12-24 16:21:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:03,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:21:03,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:03,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425868921] [2023-12-24 16:21:03,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425868921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:21:03,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:21:03,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 16:21:03,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512553905] [2023-12-24 16:21:03,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:03,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:21:03,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:03,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:21:03,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:21:03,483 INFO L87 Difference]: Start difference. First operand 2214 states and 2580 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:06,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:06,223 INFO L93 Difference]: Finished difference Result 4910 states and 5718 transitions. [2023-12-24 16:21:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:21:06,225 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 16:21:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:06,227 INFO L225 Difference]: With dead ends: 4910 [2023-12-24 16:21:06,227 INFO L226 Difference]: Without dead ends: 2721 [2023-12-24 16:21:06,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:21:06,249 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 214 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:06,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1623 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 589 Invalid, 1 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 16:21:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2023-12-24 16:21:06,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2222. [2023-12-24 16:21:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2058 states have (on average 1.15354713313897) internal successors, (2374), 2069 states have internal predecessors, (2374), 108 states have call successors, (108), 55 states have call predecessors, (108), 55 states have return successors, (108), 97 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 16:21:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 2590 transitions. [2023-12-24 16:21:06,637 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 2590 transitions. Word has length 156 [2023-12-24 16:21:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:06,637 INFO L495 AbstractCegarLoop]: Abstraction has 2222 states and 2590 transitions. [2023-12-24 16:21:06,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 2590 transitions. [2023-12-24 16:21:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 16:21:06,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:06,639 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:06,650 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 (86)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:06,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:06,848 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:06,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:06,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1049208908, now seen corresponding path program 1 times [2023-12-24 16:21:06,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:06,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965471007] [2023-12-24 16:21:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:06,849 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 16:21:06,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:06,850 INFO L229 MonitoredProcess]: Starting monitored process 87 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 16:21:06,851 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 (87)] Waiting until timeout for monitored process [2023-12-24 16:21:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:07,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:21:07,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:08,269 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 16:21:08,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:21:08,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2023-12-24 16:21:08,593 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:21:08,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:09,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:09,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965471007] [2023-12-24 16:21:09,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965471007] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:09,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [635155116] [2023-12-24 16:21:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:09,483 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:21:09,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:21:09,484 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:21:09,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (88)] Waiting until timeout for monitored process [2023-12-24 16:21:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:10,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 16:21:10,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:10,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 38 [2023-12-24 16:21:10,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20 [2023-12-24 16:21:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:11,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:21:11,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [635155116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:21:11,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:11,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2023-12-24 16:21:11,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072371896] [2023-12-24 16:21:11,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:11,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:21:11,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:11,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:21:11,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:21:11,024 INFO L87 Difference]: Start difference. First operand 2222 states and 2590 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:12,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:12,208 INFO L93 Difference]: Finished difference Result 4911 states and 5759 transitions. [2023-12-24 16:21:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:21:12,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 16:21:12,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:12,212 INFO L225 Difference]: With dead ends: 4911 [2023-12-24 16:21:12,212 INFO L226 Difference]: Without dead ends: 2714 [2023-12-24 16:21:12,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 332 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:21:12,214 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 166 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:12,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 859 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:21:12,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2023-12-24 16:21:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 1744. [2023-12-24 16:21:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1630 states have (on average 1.154601226993865) internal successors, (1882), 1637 states have internal predecessors, (1882), 74 states have call successors, (74), 39 states have call predecessors, (74), 39 states have return successors, (74), 67 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-24 16:21:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2030 transitions. [2023-12-24 16:21:12,472 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2030 transitions. Word has length 156 [2023-12-24 16:21:12,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:12,472 INFO L495 AbstractCegarLoop]: Abstraction has 1744 states and 2030 transitions. [2023-12-24 16:21:12,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2030 transitions. [2023-12-24 16:21:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 16:21:12,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:12,474 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:12,483 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 (87)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:12,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (88)] Ended with exit code 0 [2023-12-24 16:21:12,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:21:12,892 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:12,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:12,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1764791542, now seen corresponding path program 1 times [2023-12-24 16:21:12,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:12,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048274818] [2023-12-24 16:21:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:12,893 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 16:21:12,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:12,894 INFO L229 MonitoredProcess]: Starting monitored process 89 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 16:21:12,895 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 (89)] Waiting until timeout for monitored process [2023-12-24 16:21:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:13,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:21:13,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:13,801 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 16:21:13,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:21:14,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2023-12-24 16:21:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 16:21:14,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:14,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-24 16:21:14,151 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:21:14,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:21:14,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:21:14,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-12-24 16:21:14,521 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:21:14,522 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 40 treesize of output 31 [2023-12-24 16:21:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-12-24 16:21:14,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:14,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048274818] [2023-12-24 16:21:14,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048274818] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:14,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:14,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [16] total 28 [2023-12-24 16:21:14,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402088217] [2023-12-24 16:21:14,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:14,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 16:21:14,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 16:21:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:21:14,665 INFO L87 Difference]: Start difference. First operand 1744 states and 2030 transitions. Second operand has 16 states, 14 states have (on average 5.428571428571429) internal successors, (76), 15 states have internal predecessors, (76), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:21:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:15,474 INFO L93 Difference]: Finished difference Result 1774 states and 2057 transitions. [2023-12-24 16:21:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 16:21:15,475 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.428571428571429) internal successors, (76), 15 states have internal predecessors, (76), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 157 [2023-12-24 16:21:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:15,477 INFO L225 Difference]: With dead ends: 1774 [2023-12-24 16:21:15,477 INFO L226 Difference]: Without dead ends: 1772 [2023-12-24 16:21:15,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 286 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=310, Invalid=1250, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 16:21:15,477 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 334 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:15,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 676 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:21:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2023-12-24 16:21:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1602. [2023-12-24 16:21:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1530 states have (on average 1.158169934640523) internal successors, (1772), 1532 states have internal predecessors, (1772), 44 states have call successors, (44), 27 states have call predecessors, (44), 27 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:21:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 1860 transitions. [2023-12-24 16:21:15,636 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 1860 transitions. Word has length 157 [2023-12-24 16:21:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:15,637 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 1860 transitions. [2023-12-24 16:21:15,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.428571428571429) internal successors, (76), 15 states have internal predecessors, (76), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:21:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 1860 transitions. [2023-12-24 16:21:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:21:15,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:15,638 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:15,648 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 (89)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:15,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:15,847 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:15,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:15,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1142164657, now seen corresponding path program 1 times [2023-12-24 16:21:15,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:15,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426603383] [2023-12-24 16:21:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:15,848 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 16:21:15,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:15,849 INFO L229 MonitoredProcess]: Starting monitored process 90 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 16:21:15,851 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 (90)] Waiting until timeout for monitored process [2023-12-24 16:21:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:16,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:21:16,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:16,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:21:16,719 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 16:21:16,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:21:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 16:21:17,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:17,626 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:21:17,626 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 40 treesize of output 31 [2023-12-24 16:21:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-12-24 16:21:17,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:17,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426603383] [2023-12-24 16:21:17,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426603383] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:17,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:17,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [18] total 32 [2023-12-24 16:21:17,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110083635] [2023-12-24 16:21:17,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 16:21:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:17,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 16:21:17,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:21:17,767 INFO L87 Difference]: Start difference. First operand 1602 states and 1860 transitions. Second operand has 18 states, 16 states have (on average 4.8125) internal successors, (77), 17 states have internal predecessors, (77), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:21:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:19,371 INFO L93 Difference]: Finished difference Result 1854 states and 2151 transitions. [2023-12-24 16:21:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 16:21:19,372 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.8125) internal successors, (77), 17 states have internal predecessors, (77), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 158 [2023-12-24 16:21:19,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:19,373 INFO L225 Difference]: With dead ends: 1854 [2023-12-24 16:21:19,373 INFO L226 Difference]: Without dead ends: 1852 [2023-12-24 16:21:19,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 286 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=691, Invalid=2731, Unknown=0, NotChecked=0, Total=3422 [2023-12-24 16:21:19,374 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1537 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:19,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1126 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:21:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2023-12-24 16:21:19,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1608. [2023-12-24 16:21:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1536 states have (on average 1.1588541666666667) internal successors, (1780), 1538 states have internal predecessors, (1780), 44 states have call successors, (44), 27 states have call predecessors, (44), 27 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:21:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 1868 transitions. [2023-12-24 16:21:19,535 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 1868 transitions. Word has length 158 [2023-12-24 16:21:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:19,536 INFO L495 AbstractCegarLoop]: Abstraction has 1608 states and 1868 transitions. [2023-12-24 16:21:19,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.8125) internal successors, (77), 17 states have internal predecessors, (77), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 16:21:19,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 1868 transitions. [2023-12-24 16:21:19,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:21:19,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:19,537 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:19,546 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 (90)] Ended with exit code 0 [2023-12-24 16:21:19,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:19,746 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:19,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:19,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2095824875, now seen corresponding path program 1 times [2023-12-24 16:21:19,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:19,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787619377] [2023-12-24 16:21:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:19,747 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 16:21:19,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:19,748 INFO L229 MonitoredProcess]: Starting monitored process 91 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 16:21:19,749 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 (91)] Waiting until timeout for monitored process [2023-12-24 16:21:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:20,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:21:20,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:20,382 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 16:21:20,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 33 [2023-12-24 16:21:20,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2023-12-24 16:21:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:20,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:21:20,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:20,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787619377] [2023-12-24 16:21:20,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787619377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:21:20,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:21:20,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 16:21:20,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268417295] [2023-12-24 16:21:20,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:20,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:21:20,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:20,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:21:20,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:21:20,524 INFO L87 Difference]: Start difference. First operand 1608 states and 1868 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:21,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:21,834 INFO L93 Difference]: Finished difference Result 3250 states and 3810 transitions. [2023-12-24 16:21:21,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:21:21,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 16:21:21,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:21,837 INFO L225 Difference]: With dead ends: 3250 [2023-12-24 16:21:21,837 INFO L226 Difference]: Without dead ends: 1667 [2023-12-24 16:21:21,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:21:21,855 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 184 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:21,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 989 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 16:21:21,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2023-12-24 16:21:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1394. [2023-12-24 16:21:22,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1322 states have (on average 1.1558245083207261) internal successors, (1528), 1324 states have internal predecessors, (1528), 44 states have call successors, (44), 27 states have call predecessors, (44), 27 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:21:22,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1616 transitions. [2023-12-24 16:21:22,017 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1616 transitions. Word has length 158 [2023-12-24 16:21:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:22,017 INFO L495 AbstractCegarLoop]: Abstraction has 1394 states and 1616 transitions. [2023-12-24 16:21:22,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1616 transitions. [2023-12-24 16:21:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:21:22,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:22,019 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:22,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:22,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:22,227 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:22,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash -65245255, now seen corresponding path program 1 times [2023-12-24 16:21:22,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244907894] [2023-12-24 16:21:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:22,228 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 16:21:22,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:22,229 INFO L229 MonitoredProcess]: Starting monitored process 92 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 16:21:22,231 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 (92)] Waiting until timeout for monitored process [2023-12-24 16:21:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:22,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:21:22,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:22,887 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 16:21:23,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 33 [2023-12-24 16:21:23,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2023-12-24 16:21:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:23,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:21:23,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:23,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244907894] [2023-12-24 16:21:23,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244907894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:21:23,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:21:23,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 16:21:23,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336948152] [2023-12-24 16:21:23,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:23,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:21:23,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:23,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:21:23,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:21:23,171 INFO L87 Difference]: Start difference. First operand 1394 states and 1616 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:25,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:25,240 INFO L93 Difference]: Finished difference Result 3141 states and 3656 transitions. [2023-12-24 16:21:25,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:21:25,241 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 16:21:25,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:25,242 INFO L225 Difference]: With dead ends: 3141 [2023-12-24 16:21:25,242 INFO L226 Difference]: Without dead ends: 1772 [2023-12-24 16:21:25,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:21:25,243 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 261 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:25,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1522 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 16:21:25,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2023-12-24 16:21:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1426. [2023-12-24 16:21:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1354 states have (on average 1.1580502215657311) internal successors, (1568), 1356 states have internal predecessors, (1568), 44 states have call successors, (44), 27 states have call predecessors, (44), 27 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:21:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1656 transitions. [2023-12-24 16:21:25,406 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1656 transitions. Word has length 158 [2023-12-24 16:21:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:25,407 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 1656 transitions. [2023-12-24 16:21:25,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1656 transitions. [2023-12-24 16:21:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:21:25,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:25,408 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:25,418 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 (92)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:25,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:25,617 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:25,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1681005863, now seen corresponding path program 1 times [2023-12-24 16:21:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:25,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435163651] [2023-12-24 16:21:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:25,618 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 16:21:25,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:25,618 INFO L229 MonitoredProcess]: Starting monitored process 93 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 16:21:25,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2023-12-24 16:21:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:26,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:21:26,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:27,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 31 [2023-12-24 16:21:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 5 proven. 303 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:21:27,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:27,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:27,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435163651] [2023-12-24 16:21:27,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435163651] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:27,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:27,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2023-12-24 16:21:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531042667] [2023-12-24 16:21:27,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:27,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:21:27,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:27,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:21:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:21:27,598 INFO L87 Difference]: Start difference. First operand 1426 states and 1656 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:28,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:28,160 INFO L93 Difference]: Finished difference Result 3056 states and 3570 transitions. [2023-12-24 16:21:28,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:21:28,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 16:21:28,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:28,162 INFO L225 Difference]: With dead ends: 3056 [2023-12-24 16:21:28,162 INFO L226 Difference]: Without dead ends: 1655 [2023-12-24 16:21:28,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:21:28,163 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 104 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:28,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 674 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:21:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2023-12-24 16:21:28,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1426. [2023-12-24 16:21:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1354 states have (on average 1.1521418020679468) internal successors, (1560), 1356 states have internal predecessors, (1560), 44 states have call successors, (44), 27 states have call predecessors, (44), 27 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:21:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1648 transitions. [2023-12-24 16:21:28,327 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1648 transitions. Word has length 158 [2023-12-24 16:21:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:28,327 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 1648 transitions. [2023-12-24 16:21:28,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:28,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1648 transitions. [2023-12-24 16:21:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:21:28,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:28,328 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:28,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Ended with exit code 0 [2023-12-24 16:21:28,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:28,537 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:28,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1000947493, now seen corresponding path program 1 times [2023-12-24 16:21:28,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:28,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466504167] [2023-12-24 16:21:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:28,539 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 16:21:28,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:28,540 INFO L229 MonitoredProcess]: Starting monitored process 94 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 16:21:28,541 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 (94)] Waiting until timeout for monitored process [2023-12-24 16:21:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:29,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 16:21:29,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:30,090 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 16:21:31,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 69 [2023-12-24 16:21:31,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:21:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 5 proven. 303 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:21:31,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:32,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:32,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466504167] [2023-12-24 16:21:32,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466504167] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:32,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:32,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-12-24 16:21:32,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115679908] [2023-12-24 16:21:32,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:32,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:21:32,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:32,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:21:32,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:21:32,598 INFO L87 Difference]: Start difference. First operand 1426 states and 1648 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:34,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:34,210 INFO L93 Difference]: Finished difference Result 3376 states and 3958 transitions. [2023-12-24 16:21:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:21:34,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 16:21:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:34,213 INFO L225 Difference]: With dead ends: 3376 [2023-12-24 16:21:34,213 INFO L226 Difference]: Without dead ends: 1975 [2023-12-24 16:21:34,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 16:21:34,222 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 422 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:34,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1302 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:21:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2023-12-24 16:21:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1446. [2023-12-24 16:21:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1374 states have (on average 1.1528384279475983) internal successors, (1584), 1376 states have internal predecessors, (1584), 44 states have call successors, (44), 27 states have call predecessors, (44), 27 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:21:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1672 transitions. [2023-12-24 16:21:34,392 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1672 transitions. Word has length 158 [2023-12-24 16:21:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:34,392 INFO L495 AbstractCegarLoop]: Abstraction has 1446 states and 1672 transitions. [2023-12-24 16:21:34,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1672 transitions. [2023-12-24 16:21:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:21:34,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:34,394 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:34,402 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 (94)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:34,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:34,603 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:34,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1259112931, now seen corresponding path program 1 times [2023-12-24 16:21:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265203929] [2023-12-24 16:21:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:34,604 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 16:21:34,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:34,606 INFO L229 MonitoredProcess]: Starting monitored process 95 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 16:21:34,606 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 (95)] Waiting until timeout for monitored process [2023-12-24 16:21:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:35,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 16:21:35,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:35,843 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 16:21:36,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 60 [2023-12-24 16:21:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 5 proven. 303 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:21:36,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:37,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:37,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265203929] [2023-12-24 16:21:37,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265203929] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:37,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:37,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18] total 27 [2023-12-24 16:21:37,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93011799] [2023-12-24 16:21:37,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:37,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:21:37,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:37,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:21:37,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:21:37,177 INFO L87 Difference]: Start difference. First operand 1446 states and 1672 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:39,366 INFO L93 Difference]: Finished difference Result 3495 states and 4120 transitions. [2023-12-24 16:21:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 16:21:39,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 16:21:39,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:39,388 INFO L225 Difference]: With dead ends: 3495 [2023-12-24 16:21:39,388 INFO L226 Difference]: Without dead ends: 2074 [2023-12-24 16:21:39,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=312, Invalid=1328, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 16:21:39,389 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 353 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:39,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1436 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:21:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2023-12-24 16:21:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1406. [2023-12-24 16:21:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1334 states have (on average 1.1484257871064467) internal successors, (1532), 1336 states have internal predecessors, (1532), 44 states have call successors, (44), 27 states have call predecessors, (44), 27 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:21:39,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 1620 transitions. [2023-12-24 16:21:39,555 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 1620 transitions. Word has length 158 [2023-12-24 16:21:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:39,555 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 1620 transitions. [2023-12-24 16:21:39,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 1620 transitions. [2023-12-24 16:21:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:21:39,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:39,557 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:39,565 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 (95)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:39,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:39,763 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:39,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2014230803, now seen corresponding path program 1 times [2023-12-24 16:21:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:39,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870650350] [2023-12-24 16:21:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:39,764 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 16:21:39,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:39,765 INFO L229 MonitoredProcess]: Starting monitored process 96 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 16:21:39,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2023-12-24 16:21:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:40,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:21:40,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:41,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:21:41,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:21:41,370 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 46 treesize of output 22 [2023-12-24 16:21:41,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:21:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:21:41,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:41,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 40 [2023-12-24 16:21:42,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:42,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870650350] [2023-12-24 16:21:42,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870650350] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:42,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1064344737] [2023-12-24 16:21:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:42,442 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:21:42,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:21:42,443 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:21:42,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (97)] Waiting until timeout for monitored process [2023-12-24 16:21:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:43,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:21:43,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:43,956 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 61 treesize of output 37 [2023-12-24 16:21:44,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 16:21:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:44,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:21:44,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1064344737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:21:44,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:44,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-12-24 16:21:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109708281] [2023-12-24 16:21:44,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:44,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:21:44,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:21:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:21:44,281 INFO L87 Difference]: Start difference. First operand 1406 states and 1620 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:45,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:45,896 INFO L93 Difference]: Finished difference Result 3236 states and 3784 transitions. [2023-12-24 16:21:45,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:21:45,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 16:21:45,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:45,900 INFO L225 Difference]: With dead ends: 3236 [2023-12-24 16:21:45,900 INFO L226 Difference]: Without dead ends: 1855 [2023-12-24 16:21:45,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:21:45,901 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 131 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:45,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 924 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:21:45,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2023-12-24 16:21:46,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1478. [2023-12-24 16:21:46,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1406 states have (on average 1.1450924608819346) internal successors, (1610), 1408 states have internal predecessors, (1610), 44 states have call successors, (44), 27 states have call predecessors, (44), 27 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:21:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1698 transitions. [2023-12-24 16:21:46,064 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1698 transitions. Word has length 158 [2023-12-24 16:21:46,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:46,064 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 1698 transitions. [2023-12-24 16:21:46,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1698 transitions. [2023-12-24 16:21:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 16:21:46,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:46,066 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:46,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (97)] Ended with exit code 0 [2023-12-24 16:21:46,283 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 (96)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:46,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:46,476 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:46,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1621203793, now seen corresponding path program 1 times [2023-12-24 16:21:46,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:46,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469792025] [2023-12-24 16:21:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:46,476 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 16:21:46,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:46,479 INFO L229 MonitoredProcess]: Starting monitored process 98 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 16:21:46,480 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 (98)] Waiting until timeout for monitored process [2023-12-24 16:21:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:46,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:21:46,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:47,888 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 69 treesize of output 33 [2023-12-24 16:21:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 5 proven. 303 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 16:21:47,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:48,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:48,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469792025] [2023-12-24 16:21:48,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469792025] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:48,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:48,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-24 16:21:48,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105413585] [2023-12-24 16:21:48,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:48,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:21:48,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:21:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:21:48,133 INFO L87 Difference]: Start difference. First operand 1478 states and 1698 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:48,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:48,685 INFO L93 Difference]: Finished difference Result 3076 states and 3538 transitions. [2023-12-24 16:21:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:21:48,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 16:21:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:48,687 INFO L225 Difference]: With dead ends: 3076 [2023-12-24 16:21:48,687 INFO L226 Difference]: Without dead ends: 1623 [2023-12-24 16:21:48,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:21:48,689 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 107 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:48,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 636 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:21:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2023-12-24 16:21:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1470. [2023-12-24 16:21:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1398 states have (on average 1.128755364806867) internal successors, (1578), 1400 states have internal predecessors, (1578), 44 states have call successors, (44), 27 states have call predecessors, (44), 27 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:21:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1666 transitions. [2023-12-24 16:21:48,862 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1666 transitions. Word has length 158 [2023-12-24 16:21:48,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:48,862 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 1666 transitions. [2023-12-24 16:21:48,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1666 transitions. [2023-12-24 16:21:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 16:21:48,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:48,864 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:48,875 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 (98)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:49,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:49,070 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:49,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:49,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1510089767, now seen corresponding path program 1 times [2023-12-24 16:21:49,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:49,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861533902] [2023-12-24 16:21:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:49,071 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 16:21:49,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:49,073 INFO L229 MonitoredProcess]: Starting monitored process 99 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 16:21:49,074 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 (99)] Waiting until timeout for monitored process [2023-12-24 16:21:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:49,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:21:49,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 16 proven. 116 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:21:49,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:49,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:49,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861533902] [2023-12-24 16:21:49,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861533902] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:49,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:49,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 16:21:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212357113] [2023-12-24 16:21:49,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:49,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:21:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:49,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:21:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:21:49,884 INFO L87 Difference]: Start difference. First operand 1470 states and 1666 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:50,105 INFO L93 Difference]: Finished difference Result 3521 states and 3985 transitions. [2023-12-24 16:21:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:21:50,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 160 [2023-12-24 16:21:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:50,106 INFO L225 Difference]: With dead ends: 3521 [2023-12-24 16:21:50,106 INFO L226 Difference]: Without dead ends: 2076 [2023-12-24 16:21:50,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 308 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 16:21:50,108 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 96 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:50,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 584 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:21:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2023-12-24 16:21:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2036. [2023-12-24 16:21:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 1964 states have (on average 1.1272912423625254) internal successors, (2214), 1966 states have internal predecessors, (2214), 44 states have call successors, (44), 27 states have call predecessors, (44), 27 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 16:21:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 2302 transitions. [2023-12-24 16:21:50,273 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 2302 transitions. Word has length 160 [2023-12-24 16:21:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:50,273 INFO L495 AbstractCegarLoop]: Abstraction has 2036 states and 2302 transitions. [2023-12-24 16:21:50,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 2302 transitions. [2023-12-24 16:21:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 16:21:50,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:50,275 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:50,284 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 (99)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:50,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:50,477 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:50,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:50,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1887484251, now seen corresponding path program 1 times [2023-12-24 16:21:50,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:50,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32225181] [2023-12-24 16:21:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:50,478 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 16:21:50,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:50,479 INFO L229 MonitoredProcess]: Starting monitored process 100 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 16:21:50,479 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 (100)] Waiting until timeout for monitored process [2023-12-24 16:21:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:50,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:21:50,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 2 proven. 186 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 16:21:51,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:51,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:51,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32225181] [2023-12-24 16:21:51,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32225181] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:51,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:51,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 16:21:51,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002243831] [2023-12-24 16:21:51,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:51,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:21:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:21:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:21:51,391 INFO L87 Difference]: Start difference. First operand 2036 states and 2302 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:51,728 INFO L93 Difference]: Finished difference Result 4203 states and 4749 transitions. [2023-12-24 16:21:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:21:51,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 160 [2023-12-24 16:21:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:51,731 INFO L225 Difference]: With dead ends: 4203 [2023-12-24 16:21:51,731 INFO L226 Difference]: Without dead ends: 2192 [2023-12-24 16:21:51,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 308 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 16:21:51,732 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 110 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:51,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 859 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:21:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2023-12-24 16:21:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2156. [2023-12-24 16:21:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2052 states have (on average 1.1257309941520468) internal successors, (2310), 2057 states have internal predecessors, (2310), 64 states have call successors, (64), 39 states have call predecessors, (64), 39 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 16:21:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2438 transitions. [2023-12-24 16:21:52,023 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2438 transitions. Word has length 160 [2023-12-24 16:21:52,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:52,023 INFO L495 AbstractCegarLoop]: Abstraction has 2156 states and 2438 transitions. [2023-12-24 16:21:52,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2438 transitions. [2023-12-24 16:21:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 16:21:52,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:52,025 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:52,033 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 (100)] Ended with exit code 0 [2023-12-24 16:21:52,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:21:52,232 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:21:52,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:21:52,232 INFO L85 PathProgramCache]: Analyzing trace with hash -702660876, now seen corresponding path program 1 times [2023-12-24 16:21:52,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:21:52,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067782203] [2023-12-24 16:21:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:52,233 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 16:21:52,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:21:52,234 INFO L229 MonitoredProcess]: Starting monitored process 101 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 16:21:52,235 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 (101)] Waiting until timeout for monitored process [2023-12-24 16:21:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:52,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:21:52,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:53,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 34 [2023-12-24 16:21:53,673 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 16:21:53,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 16:21:53,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 25 [2023-12-24 16:21:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 16:21:54,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:21:54,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 40 [2023-12-24 16:21:54,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:21:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067782203] [2023-12-24 16:21:54,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067782203] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:21:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [234793584] [2023-12-24 16:21:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:21:54,993 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:21:54,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:21:54,994 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:21:54,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (102)] Waiting until timeout for monitored process [2023-12-24 16:21:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:21:56,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 16:21:56,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:21:56,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 38 [2023-12-24 16:21:56,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 26 [2023-12-24 16:21:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:21:57,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:21:57,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [234793584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:21:57,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:21:57,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-12-24 16:21:57,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784186350] [2023-12-24 16:21:57,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:21:57,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:21:57,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:21:57,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:21:57,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:21:57,216 INFO L87 Difference]: Start difference. First operand 2156 states and 2438 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:21:59,454 INFO L93 Difference]: Finished difference Result 4569 states and 5179 transitions. [2023-12-24 16:21:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:21:59,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 160 [2023-12-24 16:21:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:21:59,460 INFO L225 Difference]: With dead ends: 4569 [2023-12-24 16:21:59,460 INFO L226 Difference]: Without dead ends: 2438 [2023-12-24 16:21:59,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2023-12-24 16:21:59,462 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 126 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:21:59,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1096 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 16:21:59,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2023-12-24 16:21:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2132. [2023-12-24 16:21:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 2028 states have (on average 1.121301775147929) internal successors, (2274), 2033 states have internal predecessors, (2274), 64 states have call successors, (64), 39 states have call predecessors, (64), 39 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 16:21:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2402 transitions. [2023-12-24 16:21:59,772 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2402 transitions. Word has length 160 [2023-12-24 16:21:59,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:21:59,772 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 2402 transitions. [2023-12-24 16:21:59,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:21:59,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2402 transitions. [2023-12-24 16:21:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:21:59,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:21:59,774 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:21:59,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (102)] Forceful destruction successful, exit code 0 [2023-12-24 16:21:59,994 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 (101)] Ended with exit code 0 [2023-12-24 16:22:00,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:00,195 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:00,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:00,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1777136004, now seen corresponding path program 1 times [2023-12-24 16:22:00,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:00,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130341846] [2023-12-24 16:22:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:00,196 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 16:22:00,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:00,197 INFO L229 MonitoredProcess]: Starting monitored process 103 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 16:22:00,199 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 (103)] Waiting until timeout for monitored process [2023-12-24 16:22:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:00,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:22:00,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:01,072 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 16:22:01,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:22:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 2 proven. 186 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 16:22:01,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:01,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-12-24 16:22:01,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:22:01,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:22:01,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:22:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:22:01,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:01,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130341846] [2023-12-24 16:22:01,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130341846] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:01,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:01,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 22 [2023-12-24 16:22:01,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979283979] [2023-12-24 16:22:01,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:01,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:22:01,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:01,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:22:01,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:22:01,889 INFO L87 Difference]: Start difference. First operand 2132 states and 2402 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:22:02,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:02,827 INFO L93 Difference]: Finished difference Result 3530 states and 3964 transitions. [2023-12-24 16:22:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:22:02,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 162 [2023-12-24 16:22:02,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:02,831 INFO L225 Difference]: With dead ends: 3530 [2023-12-24 16:22:02,831 INFO L226 Difference]: Without dead ends: 3528 [2023-12-24 16:22:02,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:22:02,831 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 119 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:02,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1971 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:22:02,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2023-12-24 16:22:03,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3248. [2023-12-24 16:22:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3248 states, 3144 states have (on average 1.1189567430025444) internal successors, (3518), 3149 states have internal predecessors, (3518), 64 states have call successors, (64), 39 states have call predecessors, (64), 39 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 16:22:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 3646 transitions. [2023-12-24 16:22:03,128 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 3646 transitions. Word has length 162 [2023-12-24 16:22:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:03,128 INFO L495 AbstractCegarLoop]: Abstraction has 3248 states and 3646 transitions. [2023-12-24 16:22:03,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:22:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 3646 transitions. [2023-12-24 16:22:03,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:22:03,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:03,131 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:22:03,141 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 (103)] Forceful destruction successful, exit code 0 [2023-12-24 16:22:03,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:03,340 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:03,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2128642, now seen corresponding path program 1 times [2023-12-24 16:22:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:03,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493746918] [2023-12-24 16:22:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:03,341 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 16:22:03,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:03,342 INFO L229 MonitoredProcess]: Starting monitored process 104 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 16:22:03,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2023-12-24 16:22:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:03,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:22:03,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 2 proven. 186 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 16:22:04,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:22:04,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:04,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493746918] [2023-12-24 16:22:04,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493746918] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:04,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:04,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 16:22:04,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976470319] [2023-12-24 16:22:04,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:04,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:22:04,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:04,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:22:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:22:04,353 INFO L87 Difference]: Start difference. First operand 3248 states and 3646 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:22:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:04,862 INFO L93 Difference]: Finished difference Result 6629 states and 7436 transitions. [2023-12-24 16:22:04,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:22:04,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 162 [2023-12-24 16:22:04,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:04,865 INFO L225 Difference]: With dead ends: 6629 [2023-12-24 16:22:04,865 INFO L226 Difference]: Without dead ends: 3406 [2023-12-24 16:22:04,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 312 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 16:22:04,869 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 101 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:04,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 841 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:22:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2023-12-24 16:22:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3248. [2023-12-24 16:22:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3248 states, 3144 states have (on average 1.118320610687023) internal successors, (3516), 3149 states have internal predecessors, (3516), 64 states have call successors, (64), 39 states have call predecessors, (64), 39 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 16:22:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 3644 transitions. [2023-12-24 16:22:05,164 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 3644 transitions. Word has length 162 [2023-12-24 16:22:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:05,164 INFO L495 AbstractCegarLoop]: Abstraction has 3248 states and 3644 transitions. [2023-12-24 16:22:05,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:22:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 3644 transitions. [2023-12-24 16:22:05,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:22:05,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:05,168 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:22:05,176 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 (104)] Ended with exit code 0 [2023-12-24 16:22:05,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:05,377 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:05,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1620438014, now seen corresponding path program 1 times [2023-12-24 16:22:05,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:05,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069936251] [2023-12-24 16:22:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:05,379 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 16:22:05,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:05,380 INFO L229 MonitoredProcess]: Starting monitored process 105 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 16:22:05,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2023-12-24 16:22:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:05,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 16:22:05,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 2 proven. 186 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 16:22:06,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:22:06,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:06,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069936251] [2023-12-24 16:22:06,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069936251] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:06,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:06,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 16:22:06,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237110240] [2023-12-24 16:22:06,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:06,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:22:06,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:06,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:22:06,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:22:06,415 INFO L87 Difference]: Start difference. First operand 3248 states and 3644 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:22:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:06,995 INFO L93 Difference]: Finished difference Result 6709 states and 7526 transitions. [2023-12-24 16:22:06,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:22:06,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 162 [2023-12-24 16:22:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:06,999 INFO L225 Difference]: With dead ends: 6709 [2023-12-24 16:22:06,999 INFO L226 Difference]: Without dead ends: 3486 [2023-12-24 16:22:07,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 313 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 16:22:07,000 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 101 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:07,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 716 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:22:07,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2023-12-24 16:22:07,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3234. [2023-12-24 16:22:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3130 states have (on average 1.1169329073482428) internal successors, (3496), 3135 states have internal predecessors, (3496), 64 states have call successors, (64), 39 states have call predecessors, (64), 39 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 16:22:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 3624 transitions. [2023-12-24 16:22:07,349 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 3624 transitions. Word has length 162 [2023-12-24 16:22:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:07,350 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 3624 transitions. [2023-12-24 16:22:07,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:22:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 3624 transitions. [2023-12-24 16:22:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 16:22:07,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:22:07,352 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:07,361 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 (105)] Forceful destruction successful, exit code 0 [2023-12-24 16:22:07,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:07,561 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:22:07,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:22:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash -899521920, now seen corresponding path program 1 times [2023-12-24 16:22:07,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:22:07,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062293503] [2023-12-24 16:22:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:22:07,562 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 16:22:07,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:22:07,563 INFO L229 MonitoredProcess]: Starting monitored process 106 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 16:22:07,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2023-12-24 16:22:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:22:08,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 16:22:08,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:22:08,487 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 16:22:08,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:22:08,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 16:22:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 16:22:08,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:22:09,322 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 26 treesize of output 22 [2023-12-24 16:22:09,326 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-24 16:22:09,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:22:09,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2023-12-24 16:22:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 16:22:09,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:22:09,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062293503] [2023-12-24 16:22:09,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062293503] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:22:09,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:22:09,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 27 [2023-12-24 16:22:09,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724122377] [2023-12-24 16:22:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:22:09,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 16:22:09,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:22:09,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 16:22:09,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:22:09,447 INFO L87 Difference]: Start difference. First operand 3234 states and 3624 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:22:10,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:22:10,273 INFO L93 Difference]: Finished difference Result 3396 states and 3804 transitions. [2023-12-24 16:22:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:22:10,274 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 162 [2023-12-24 16:22:10,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:22:10,274 INFO L225 Difference]: With dead ends: 3396 [2023-12-24 16:22:10,274 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 16:22:10,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 16:22:10,275 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 124 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:22:10,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1737 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:22:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 16:22:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 16:22:10,275 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 16:22:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 16:22:10,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 162 [2023-12-24 16:22:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:22:10,276 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 16:22:10,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 16:22:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 16:22:10,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 16:22:10,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 16:22:10,288 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 (106)] Forceful destruction successful, exit code 0 [2023-12-24 16:22:10,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:22:10,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 16:30:05,398 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-33-68-8-5-8-6-8-6-8-14-12-16-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-10-16-8-16-7-16-6-16-5-16-5-16-5-16-5-16-5-16-5-16-5-16-5-16-5-16-3-16-3-16-3-6-3-5-2-5-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-147-68-10-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-10-16-8-16-7-16-6-16-5-16-5-16-5-16-5-16-5-16-5-16-5-16-5-16-5-16-3-16-3-16-3-6-3-5-2-5-2-4-1 context. [2023-12-24 16:30:05,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:30:05,425 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 16:30:05,481 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 16:30:05,483 INFO L158 Benchmark]: Toolchain (without parser) took 878605.71ms. Allocated memory was 291.5MB in the beginning and 1.0GB in the end (delta: 758.1MB). Free memory was 243.8MB in the beginning and 844.6MB in the end (delta: -600.7MB). Peak memory consumption was 158.2MB. Max. memory is 8.0GB. [2023-12-24 16:30:05,483 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 224.4MB. Free memory was 173.4MB in the beginning and 173.3MB in the end (delta: 86.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:30:05,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.12ms. Allocated memory is still 291.5MB. Free memory was 243.6MB in the beginning and 228.1MB in the end (delta: 15.5MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 16:30:05,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.20ms. Allocated memory is still 291.5MB. Free memory was 228.1MB in the beginning and 224.7MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 16:30:05,483 INFO L158 Benchmark]: Boogie Preprocessor took 120.91ms. Allocated memory is still 291.5MB. Free memory was 224.7MB in the beginning and 217.0MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-24 16:30:05,483 INFO L158 Benchmark]: RCFGBuilder took 1026.06ms. Allocated memory is still 291.5MB. Free memory was 217.0MB in the beginning and 227.4MB in the end (delta: -10.5MB). Peak memory consumption was 47.6MB. Max. memory is 8.0GB. [2023-12-24 16:30:05,483 INFO L158 Benchmark]: TraceAbstraction took 877104.93ms. Allocated memory was 291.5MB in the beginning and 1.0GB in the end (delta: 758.1MB). Free memory was 226.9MB in the beginning and 844.6MB in the end (delta: -617.7MB). Peak memory consumption was 139.9MB. Max. memory is 8.0GB. [2023-12-24 16:30:05,484 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 224.4MB. Free memory was 173.4MB in the beginning and 173.3MB in the end (delta: 86.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 288.12ms. Allocated memory is still 291.5MB. Free memory was 243.6MB in the beginning and 228.1MB in the end (delta: 15.5MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.20ms. Allocated memory is still 291.5MB. Free memory was 228.1MB in the beginning and 224.7MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 120.91ms. Allocated memory is still 291.5MB. Free memory was 224.7MB in the beginning and 217.0MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 1026.06ms. Allocated memory is still 291.5MB. Free memory was 217.0MB in the beginning and 227.4MB in the end (delta: -10.5MB). Peak memory consumption was 47.6MB. Max. memory is 8.0GB. * TraceAbstraction took 877104.93ms. Allocated memory was 291.5MB in the beginning and 1.0GB in the end (delta: 758.1MB). Free memory was 226.9MB in the beginning and 844.6MB in the end (delta: -617.7MB). Peak memory consumption was 139.9MB. 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 ∨-33-68-8-5-8-6-8-6-8-14-12-16-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-17-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-12-16-10-16-8-16-7-16-6-16-5-16-5-16-5-16-5-16-5-16-5-16-5-16-5-16-5-16-3-16-3-16-3-6-3-5-2-5-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-34-68-8-7-8-6-8-6-8-14-12-16-12-17-16-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-16-17-16-17-16-17-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-6-16-5-16-5-16-4-6-3-5-2-5-2-4-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown