/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-97.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 15:53:32,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 15:53:32,161 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 15:53:32,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 15:53:32,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 15:53:32,190 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 15:53:32,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 15:53:32,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 15:53:32,191 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 15:53:32,194 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 15:53:32,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 15:53:32,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 15:53:32,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 15:53:32,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 15:53:32,196 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 15:53:32,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 15:53:32,196 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 15:53:32,197 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 15:53:32,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 15:53:32,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 15:53:32,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 15:53:32,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 15:53:32,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 15:53:32,198 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 15:53:32,198 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 15:53:32,198 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 15:53:32,198 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 15:53:32,198 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 15:53:32,198 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 15:53:32,198 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 15:53:32,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 15:53:32,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 15:53:32,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 15:53:32,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 15:53:32,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:53:32,200 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 15:53:32,200 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 15:53:32,200 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 15:53:32,200 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 15:53:32,200 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 15:53:32,200 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 15:53:32,201 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 15:53:32,201 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 15:53:32,201 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 15:53:32,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 15:53:32,201 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 15:53:32,201 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 15:53:32,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 15:53:32,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 15:53:32,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 15:53:32,402 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 15:53:32,402 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 15:53:32,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-97.i [2023-12-16 15:53:33,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 15:53:33,657 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 15:53:33,658 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-97.i [2023-12-16 15:53:33,665 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751566109/7455917a9e214ad497dd6656ef1f7da8/FLAG1879f7de3 [2023-12-16 15:53:33,677 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751566109/7455917a9e214ad497dd6656ef1f7da8 [2023-12-16 15:53:33,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 15:53:33,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 15:53:33,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 15:53:33,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 15:53:33,685 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 15:53:33,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:33,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f77c12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33, skipping insertion in model container [2023-12-16 15:53:33,686 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:33,719 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 15:53:33,820 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-97.i[916,929] [2023-12-16 15:53:33,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:53:33,868 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 15:53:33,883 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-97.i[916,929] [2023-12-16 15:53:33,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:53:33,925 INFO L206 MainTranslator]: Completed translation [2023-12-16 15:53:33,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33 WrapperNode [2023-12-16 15:53:33,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 15:53:33,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 15:53:33,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 15:53:33,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 15:53:33,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:33,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:33,978 INFO L138 Inliner]: procedures = 33, calls = 159, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 450 [2023-12-16 15:53:33,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 15:53:33,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 15:53:33,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 15:53:33,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 15:53:33,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:33,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:33,998 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:34,025 INFO L175 MemorySlicer]: Split 116 memory accesses to 16 slices as follows [2, 7, 8, 6, 6, 7, 8, 10, 11, 8, 6, 7, 6, 9, 8, 7]. 9 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 19 writes are split as follows [0, 3, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1]. [2023-12-16 15:53:34,025 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:34,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:34,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:34,054 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:34,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:34,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:34,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 15:53:34,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 15:53:34,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 15:53:34,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 15:53:34,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2023-12-16 15:53:34,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:53:34,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 15:53:34,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 15:53:34,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 15:53:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 15:53:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-16 15:53:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#13 [2023-12-16 15:53:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#14 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#15 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-16 15:53:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#12 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#13 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#14 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#15 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-16 15:53:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#13 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#14 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#15 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2023-12-16 15:53:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#11 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#12 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#13 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#14 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#15 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-16 15:53:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-16 15:53:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-16 15:53:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-16 15:53:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-16 15:53:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-16 15:53:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-16 15:53:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#12 [2023-12-16 15:53:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#13 [2023-12-16 15:53:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#14 [2023-12-16 15:53:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#15 [2023-12-16 15:53:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-16 15:53:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-16 15:53:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-16 15:53:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-16 15:53:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-16 15:53:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-16 15:53:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-16 15:53:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-16 15:53:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2023-12-16 15:53:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2023-12-16 15:53:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2023-12-16 15:53:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#11 [2023-12-16 15:53:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#12 [2023-12-16 15:53:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#13 [2023-12-16 15:53:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#14 [2023-12-16 15:53:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#15 [2023-12-16 15:53:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#11 [2023-12-16 15:53:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#12 [2023-12-16 15:53:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#13 [2023-12-16 15:53:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#14 [2023-12-16 15:53:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#15 [2023-12-16 15:53:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 15:53:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 15:53:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 15:53:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2023-12-16 15:53:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#13 [2023-12-16 15:53:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#14 [2023-12-16 15:53:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#15 [2023-12-16 15:53:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-16 15:53:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-16 15:53:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#12 [2023-12-16 15:53:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#13 [2023-12-16 15:53:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#14 [2023-12-16 15:53:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#15 [2023-12-16 15:53:34,396 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 15:53:34,398 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 15:53:34,828 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 15:53:34,865 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 15:53:34,868 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 15:53:34,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:53:34 BoogieIcfgContainer [2023-12-16 15:53:34,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 15:53:34,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 15:53:34,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 15:53:34,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 15:53:34,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:53:33" (1/3) ... [2023-12-16 15:53:34,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b84aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:53:34, skipping insertion in model container [2023-12-16 15:53:34,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (2/3) ... [2023-12-16 15:53:34,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b84aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:53:34, skipping insertion in model container [2023-12-16 15:53:34,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:53:34" (3/3) ... [2023-12-16 15:53:34,875 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-97.i [2023-12-16 15:53:34,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 15:53:34,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 15:53:34,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 15:53:34,934 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;@76f02509, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 15:53:34,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 15:53:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 73 states have (on average 1.4246575342465753) internal successors, (104), 74 states have internal predecessors, (104), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 15:53:34,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 15:53:34,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:34,950 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:34,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:34,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:34,955 INFO L85 PathProgramCache]: Analyzing trace with hash -61911549, now seen corresponding path program 1 times [2023-12-16 15:53:34,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:34,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155926393] [2023-12-16 15:53:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:34,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:34,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:34,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:35,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 15:53:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:35,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 15:53:35,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-16 15:53:35,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:53:35,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:35,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155926393] [2023-12-16 15:53:35,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155926393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:53:35,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:53:35,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 15:53:35,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447519734] [2023-12-16 15:53:35,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:53:35,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 15:53:35,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:35,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 15:53:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:53:35,392 INFO L87 Difference]: Start difference. First operand has 93 states, 73 states have (on average 1.4246575342465753) internal successors, (104), 74 states have internal predecessors, (104), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 15:53:35,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:35,451 INFO L93 Difference]: Finished difference Result 183 states and 291 transitions. [2023-12-16 15:53:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 15:53:35,453 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 129 [2023-12-16 15:53:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:35,458 INFO L225 Difference]: With dead ends: 183 [2023-12-16 15:53:35,458 INFO L226 Difference]: Without dead ends: 91 [2023-12-16 15:53:35,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:53:35,463 INFO L413 NwaCegarLoop]: 129 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, 129 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:35,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:53:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-16 15:53:35,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-16 15:53:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 72 states have (on average 1.375) internal successors, (99), 72 states have internal predecessors, (99), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 15:53:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 133 transitions. [2023-12-16 15:53:35,508 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 133 transitions. Word has length 129 [2023-12-16 15:53:35,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:35,508 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 133 transitions. [2023-12-16 15:53:35,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 15:53:35,509 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 133 transitions. [2023-12-16 15:53:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 15:53:35,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:35,515 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:35,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 15:53:35,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:35,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:35,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:35,722 INFO L85 PathProgramCache]: Analyzing trace with hash 94664801, now seen corresponding path program 1 times [2023-12-16 15:53:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:35,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582709991] [2023-12-16 15:53:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:35,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:35,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:35,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:35,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 15:53:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:36,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:53:36,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:36,620 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 42 treesize of output 26 [2023-12-16 15:53:36,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:53:36,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-16 15:53:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 39 proven. 217 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-16 15:53:36,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:53:36,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:53:36,724 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 15:53:36,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:53:36,732 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 [2023-12-16 15:53:37,022 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:53:37,023 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 [2023-12-16 15:53:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 75 proven. 18 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:53:37,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:37,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582709991] [2023-12-16 15:53:37,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582709991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:53:37,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:53:37,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-16 15:53:37,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125798247] [2023-12-16 15:53:37,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:53:37,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 15:53:37,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:37,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 15:53:37,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-16 15:53:37,132 INFO L87 Difference]: Start difference. First operand 91 states and 133 transitions. Second operand has 24 states, 20 states have (on average 4.05) internal successors, (81), 22 states have internal predecessors, (81), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:38,562 INFO L93 Difference]: Finished difference Result 293 states and 415 transitions. [2023-12-16 15:53:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-16 15:53:38,563 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.05) internal successors, (81), 22 states have internal predecessors, (81), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 129 [2023-12-16 15:53:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:38,567 INFO L225 Difference]: With dead ends: 293 [2023-12-16 15:53:38,568 INFO L226 Difference]: Without dead ends: 203 [2023-12-16 15:53:38,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=579, Invalid=1971, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 15:53:38,572 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 980 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:38,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1400 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 15:53:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-16 15:53:38,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 106. [2023-12-16 15:53:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.3529411764705883) internal successors, (115), 85 states have internal predecessors, (115), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 15:53:38,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 149 transitions. [2023-12-16 15:53:38,603 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 149 transitions. Word has length 129 [2023-12-16 15:53:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:38,605 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 149 transitions. [2023-12-16 15:53:38,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.05) internal successors, (81), 22 states have internal predecessors, (81), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:38,608 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 149 transitions. [2023-12-16 15:53:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 15:53:38,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:38,613 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:38,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 15:53:38,819 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 [2023-12-16 15:53:38,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:38,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:38,821 INFO L85 PathProgramCache]: Analyzing trace with hash 517366627, now seen corresponding path program 1 times [2023-12-16 15:53:38,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:38,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630116006] [2023-12-16 15:53:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:38,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:38,823 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) [2023-12-16 15:53:38,829 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 [2023-12-16 15:53:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:39,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 15:53:39,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:39,583 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 42 treesize of output 26 [2023-12-16 15:53:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 35 proven. 279 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-16 15:53:39,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:53:39,908 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:53:39,908 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 [2023-12-16 15:53:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 63 proven. 30 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:53:39,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:39,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630116006] [2023-12-16 15:53:39,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630116006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:53:39,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:53:39,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-12-16 15:53:39,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863053271] [2023-12-16 15:53:39,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:53:39,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 15:53:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:39,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 15:53:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:53:39,994 INFO L87 Difference]: Start difference. First operand 106 states and 149 transitions. Second operand has 20 states, 16 states have (on average 4.8125) internal successors, (77), 18 states have internal predecessors, (77), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:40,659 INFO L93 Difference]: Finished difference Result 241 states and 335 transitions. [2023-12-16 15:53:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 15:53:40,659 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 4.8125) internal successors, (77), 18 states have internal predecessors, (77), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 129 [2023-12-16 15:53:40,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:40,660 INFO L225 Difference]: With dead ends: 241 [2023-12-16 15:53:40,661 INFO L226 Difference]: Without dead ends: 136 [2023-12-16 15:53:40,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2023-12-16 15:53:40,662 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 683 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:40,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 824 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:53:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-16 15:53:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2023-12-16 15:53:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 100 states have (on average 1.29) internal successors, (129), 101 states have internal predecessors, (129), 27 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-16 15:53:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 183 transitions. [2023-12-16 15:53:40,674 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 183 transitions. Word has length 129 [2023-12-16 15:53:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:40,674 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 183 transitions. [2023-12-16 15:53:40,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 4.8125) internal successors, (77), 18 states have internal predecessors, (77), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 183 transitions. [2023-12-16 15:53:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 15:53:40,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:40,675 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:40,683 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 [2023-12-16 15:53:40,881 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 [2023-12-16 15:53:40,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:40,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1872436698, now seen corresponding path program 1 times [2023-12-16 15:53:40,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:40,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302749323] [2023-12-16 15:53:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:40,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:40,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:40,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:40,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 15:53:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:41,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 15:53:41,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:41,544 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 42 treesize of output 26 [2023-12-16 15:53:41,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:53:41,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-16 15:53:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 35 proven. 279 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-16 15:53:41,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:53:41,921 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:53:41,921 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 [2023-12-16 15:53:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 63 proven. 30 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:53:42,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:42,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302749323] [2023-12-16 15:53:42,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302749323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:53:42,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:53:42,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-16 15:53:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731879769] [2023-12-16 15:53:42,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:53:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 15:53:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 15:53:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-16 15:53:42,004 INFO L87 Difference]: Start difference. First operand 133 states and 183 transitions. Second operand has 24 states, 20 states have (on average 4.15) internal successors, (83), 22 states have internal predecessors, (83), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:43,411 INFO L93 Difference]: Finished difference Result 350 states and 473 transitions. [2023-12-16 15:53:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-16 15:53:43,411 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.15) internal successors, (83), 22 states have internal predecessors, (83), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 129 [2023-12-16 15:53:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:43,413 INFO L225 Difference]: With dead ends: 350 [2023-12-16 15:53:43,413 INFO L226 Difference]: Without dead ends: 238 [2023-12-16 15:53:43,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 236 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=579, Invalid=1971, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 15:53:43,414 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 703 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:43,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1667 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 15:53:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-16 15:53:43,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2023-12-16 15:53:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 170 states have (on average 1.2823529411764707) internal successors, (218), 172 states have internal predecessors, (218), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 15:53:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 306 transitions. [2023-12-16 15:53:43,433 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 306 transitions. Word has length 129 [2023-12-16 15:53:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:43,433 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 306 transitions. [2023-12-16 15:53:43,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.15) internal successors, (83), 22 states have internal predecessors, (83), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:43,434 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 306 transitions. [2023-12-16 15:53:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 15:53:43,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:43,435 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:43,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 15:53:43,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:43,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:43,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:43,641 INFO L85 PathProgramCache]: Analyzing trace with hash 472302903, now seen corresponding path program 1 times [2023-12-16 15:53:43,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:43,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394119444] [2023-12-16 15:53:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:43,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:43,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:43,642 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:43,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 15:53:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:43,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:53:43,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:44,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:53:44,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:53:44,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-16 15:53:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 39 proven. 217 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-16 15:53:44,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:53:44,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:53:44,362 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 15:53:44,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:53:44,367 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 [2023-12-16 15:53:44,644 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:53:44,645 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 [2023-12-16 15:53:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 75 proven. 18 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:53:44,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:44,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394119444] [2023-12-16 15:53:44,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394119444] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:53:44,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:53:44,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-16 15:53:44,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136733282] [2023-12-16 15:53:44,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:53:44,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 15:53:44,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 15:53:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-16 15:53:44,745 INFO L87 Difference]: Start difference. First operand 225 states and 306 transitions. Second operand has 24 states, 20 states have (on average 4.25) internal successors, (85), 22 states have internal predecessors, (85), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:45,875 INFO L93 Difference]: Finished difference Result 505 states and 674 transitions. [2023-12-16 15:53:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-16 15:53:45,875 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.25) internal successors, (85), 22 states have internal predecessors, (85), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 130 [2023-12-16 15:53:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:45,877 INFO L225 Difference]: With dead ends: 505 [2023-12-16 15:53:45,878 INFO L226 Difference]: Without dead ends: 301 [2023-12-16 15:53:45,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=595, Invalid=2057, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 15:53:45,879 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 813 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:45,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1286 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 15:53:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-16 15:53:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 176. [2023-12-16 15:53:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 131 states have (on average 1.251908396946565) internal successors, (164), 132 states have internal predecessors, (164), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 15:53:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 232 transitions. [2023-12-16 15:53:45,903 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 232 transitions. Word has length 130 [2023-12-16 15:53:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:45,904 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 232 transitions. [2023-12-16 15:53:45,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.25) internal successors, (85), 22 states have internal predecessors, (85), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 232 transitions. [2023-12-16 15:53:45,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 15:53:45,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:45,905 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:45,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 15:53:46,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:46,111 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:46,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash -251343138, now seen corresponding path program 1 times [2023-12-16 15:53:46,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:46,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791468437] [2023-12-16 15:53:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:46,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:46,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:46,113 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:46,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 15:53:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:46,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 15:53:46,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:46,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:53:46,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:53:46,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-16 15:53:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 35 proven. 279 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-16 15:53:46,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:53:47,126 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:53:47,126 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 [2023-12-16 15:53:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 63 proven. 30 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:53:47,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:47,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791468437] [2023-12-16 15:53:47,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791468437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:53:47,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:53:47,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-16 15:53:47,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412099479] [2023-12-16 15:53:47,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:53:47,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 15:53:47,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:47,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 15:53:47,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-16 15:53:47,209 INFO L87 Difference]: Start difference. First operand 176 states and 232 transitions. Second operand has 24 states, 20 states have (on average 4.35) internal successors, (87), 22 states have internal predecessors, (87), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:48,508 INFO L93 Difference]: Finished difference Result 394 states and 521 transitions. [2023-12-16 15:53:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-16 15:53:48,508 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.35) internal successors, (87), 22 states have internal predecessors, (87), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 130 [2023-12-16 15:53:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:48,510 INFO L225 Difference]: With dead ends: 394 [2023-12-16 15:53:48,510 INFO L226 Difference]: Without dead ends: 278 [2023-12-16 15:53:48,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=595, Invalid=2057, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 15:53:48,511 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 769 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:48,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1521 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 15:53:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-16 15:53:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 166. [2023-12-16 15:53:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 121 states have (on average 1.2231404958677685) internal successors, (148), 122 states have internal predecessors, (148), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 15:53:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 216 transitions. [2023-12-16 15:53:48,528 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 216 transitions. Word has length 130 [2023-12-16 15:53:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:48,528 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 216 transitions. [2023-12-16 15:53:48,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.35) internal successors, (87), 22 states have internal predecessors, (87), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 216 transitions. [2023-12-16 15:53:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-16 15:53:48,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:48,529 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:48,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 15:53:48,735 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 [2023-12-16 15:53:48,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:48,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1638600763, now seen corresponding path program 1 times [2023-12-16 15:53:48,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:48,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255394662] [2023-12-16 15:53:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:48,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:48,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:48,738 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) [2023-12-16 15:53:48,739 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 [2023-12-16 15:53:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:48,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:53:48,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:48,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:53:49,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-16 15:53:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:53:49,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:53:49,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:49,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255394662] [2023-12-16 15:53:49,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255394662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:53:49,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:53:49,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:53:49,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408197890] [2023-12-16 15:53:49,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:53:49,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:53:49,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:53:49,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:53:49,023 INFO L87 Difference]: Start difference. First operand 166 states and 216 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:49,158 INFO L93 Difference]: Finished difference Result 402 states and 533 transitions. [2023-12-16 15:53:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:53:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-12-16 15:53:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:49,160 INFO L225 Difference]: With dead ends: 402 [2023-12-16 15:53:49,160 INFO L226 Difference]: Without dead ends: 296 [2023-12-16 15:53:49,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-16 15:53:49,161 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 240 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:49,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1023 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:53:49,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-16 15:53:49,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 172. [2023-12-16 15:53:49,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 127 states have (on average 1.220472440944882) internal successors, (155), 128 states have internal predecessors, (155), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 15:53:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 223 transitions. [2023-12-16 15:53:49,195 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 223 transitions. Word has length 132 [2023-12-16 15:53:49,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:49,196 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 223 transitions. [2023-12-16 15:53:49,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:49,196 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 223 transitions. [2023-12-16 15:53:49,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 15:53:49,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:49,198 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:49,206 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 [2023-12-16 15:53:49,404 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 [2023-12-16 15:53:49,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:49,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:49,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2016866472, now seen corresponding path program 1 times [2023-12-16 15:53:49,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:49,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458100098] [2023-12-16 15:53:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:49,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:49,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:49,407 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:49,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 15:53:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:49,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:53:49,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:50,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:53:50,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:53:50,095 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 17 treesize of output 9 [2023-12-16 15:53:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 39 proven. 217 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-16 15:53:50,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:53:50,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:53:50,144 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 15:53:50,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:53:50,149 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 [2023-12-16 15:53:50,411 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:53:50,411 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 [2023-12-16 15:53:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 75 proven. 18 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:53:50,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:50,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458100098] [2023-12-16 15:53:50,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458100098] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:53:50,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:53:50,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-16 15:53:50,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445515646] [2023-12-16 15:53:50,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:53:50,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 15:53:50,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 15:53:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-16 15:53:50,516 INFO L87 Difference]: Start difference. First operand 172 states and 223 transitions. Second operand has 24 states, 20 states have (on average 4.35) internal successors, (87), 22 states have internal predecessors, (87), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:51,638 INFO L93 Difference]: Finished difference Result 402 states and 525 transitions. [2023-12-16 15:53:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-16 15:53:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.35) internal successors, (87), 22 states have internal predecessors, (87), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 133 [2023-12-16 15:53:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:51,640 INFO L225 Difference]: With dead ends: 402 [2023-12-16 15:53:51,640 INFO L226 Difference]: Without dead ends: 290 [2023-12-16 15:53:51,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=579, Invalid=1971, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 15:53:51,641 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 1041 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:51,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 918 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 15:53:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-16 15:53:51,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 180. [2023-12-16 15:53:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 135 states have (on average 1.237037037037037) internal successors, (167), 136 states have internal predecessors, (167), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 15:53:51,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 235 transitions. [2023-12-16 15:53:51,664 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 235 transitions. Word has length 133 [2023-12-16 15:53:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:51,664 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 235 transitions. [2023-12-16 15:53:51,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.35) internal successors, (87), 22 states have internal predecessors, (87), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:53:51,665 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 235 transitions. [2023-12-16 15:53:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 15:53:51,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:51,665 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:51,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-16 15:53:51,869 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 [2023-12-16 15:53:51,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:51,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:51,869 INFO L85 PathProgramCache]: Analyzing trace with hash -22721766, now seen corresponding path program 1 times [2023-12-16 15:53:51,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:51,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886115570] [2023-12-16 15:53:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:51,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:51,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:51,871 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) [2023-12-16 15:53:51,871 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 [2023-12-16 15:53:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:52,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:53:52,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:53:52,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:53:52,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:52,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886115570] [2023-12-16 15:53:52,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886115570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:53:52,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:53:52,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:53:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762014817] [2023-12-16 15:53:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:53:52,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:53:52,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:53:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:53:52,162 INFO L87 Difference]: Start difference. First operand 180 states and 235 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:52,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:52,222 INFO L93 Difference]: Finished difference Result 321 states and 425 transitions. [2023-12-16 15:53:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:53:52,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2023-12-16 15:53:52,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:52,224 INFO L225 Difference]: With dead ends: 321 [2023-12-16 15:53:52,224 INFO L226 Difference]: Without dead ends: 201 [2023-12-16 15:53:52,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 15:53:52,224 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 46 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:52,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 482 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:53:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-16 15:53:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 184. [2023-12-16 15:53:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 139 states have (on average 1.2302158273381294) internal successors, (171), 140 states have internal predecessors, (171), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 15:53:52,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 239 transitions. [2023-12-16 15:53:52,241 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 239 transitions. Word has length 133 [2023-12-16 15:53:52,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:52,241 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 239 transitions. [2023-12-16 15:53:52,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 239 transitions. [2023-12-16 15:53:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 15:53:52,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:52,242 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:52,264 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 [2023-12-16 15:53:52,451 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 [2023-12-16 15:53:52,451 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:52,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash -832068392, now seen corresponding path program 1 times [2023-12-16 15:53:52,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:52,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175715057] [2023-12-16 15:53:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:52,455 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 [2023-12-16 15:53:52,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:52,456 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:52,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 15:53:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:52,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 15:53:52,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:53:52,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:53:52,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:52,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175715057] [2023-12-16 15:53:52,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175715057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:53:52,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:53:52,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:53:52,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053510062] [2023-12-16 15:53:52,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:53:52,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:53:52,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:52,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:53:52,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:53:52,750 INFO L87 Difference]: Start difference. First operand 184 states and 239 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:52,852 INFO L93 Difference]: Finished difference Result 328 states and 430 transitions. [2023-12-16 15:53:52,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 15:53:52,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2023-12-16 15:53:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:52,855 INFO L225 Difference]: With dead ends: 328 [2023-12-16 15:53:52,855 INFO L226 Difference]: Without dead ends: 204 [2023-12-16 15:53:52,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:53:52,856 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 49 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:52,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 596 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:53:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-16 15:53:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 186. [2023-12-16 15:53:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 141 states have (on average 1.2269503546099292) internal successors, (173), 142 states have internal predecessors, (173), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 15:53:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 241 transitions. [2023-12-16 15:53:52,891 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 241 transitions. Word has length 133 [2023-12-16 15:53:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:52,891 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 241 transitions. [2023-12-16 15:53:52,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 241 transitions. [2023-12-16 15:53:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 15:53:52,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:52,892 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:52,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 15:53:53,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:53,099 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:53,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:53,100 INFO L85 PathProgramCache]: Analyzing trace with hash -774810090, now seen corresponding path program 1 times [2023-12-16 15:53:53,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:53,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071510341] [2023-12-16 15:53:53,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:53,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:53,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:53,101 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:53,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 15:53:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:53,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 15:53:53,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:53:53,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:53:53,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071510341] [2023-12-16 15:53:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071510341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:53:53,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:53:53,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 15:53:53,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350539463] [2023-12-16 15:53:53,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:53:53,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:53:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:53:53,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:53:53,338 INFO L87 Difference]: Start difference. First operand 186 states and 241 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:53,436 INFO L93 Difference]: Finished difference Result 331 states and 430 transitions. [2023-12-16 15:53:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 15:53:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2023-12-16 15:53:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:53,438 INFO L225 Difference]: With dead ends: 331 [2023-12-16 15:53:53,438 INFO L226 Difference]: Without dead ends: 205 [2023-12-16 15:53:53,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-16 15:53:53,439 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 40 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:53,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 704 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:53:53,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-16 15:53:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 188. [2023-12-16 15:53:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 143 states have (on average 1.2237762237762237) internal successors, (175), 144 states have internal predecessors, (175), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 15:53:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 243 transitions. [2023-12-16 15:53:53,451 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 243 transitions. Word has length 133 [2023-12-16 15:53:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:53,451 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 243 transitions. [2023-12-16 15:53:53,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 243 transitions. [2023-12-16 15:53:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 15:53:53,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:53,452 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:53,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 15:53:53,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:53,659 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:53,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash -774750508, now seen corresponding path program 1 times [2023-12-16 15:53:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:53,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406444974] [2023-12-16 15:53:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:53,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:53,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:53,661 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:53,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 15:53:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:53,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 15:53:53,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:54,304 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 37 treesize of output 25 [2023-12-16 15:53:54,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-16 15:53:54,506 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 24 treesize of output 16 [2023-12-16 15:53:54,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-16 15:53:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 31 proven. 309 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-16 15:53:54,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:53:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:53:54,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:54,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406444974] [2023-12-16 15:53:54,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406444974] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:53:54,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:53:54,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-16 15:53:54,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835242035] [2023-12-16 15:53:54,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:53:54,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:53:54,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:53:54,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:53:54,735 INFO L87 Difference]: Start difference. First operand 188 states and 243 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:54,907 INFO L93 Difference]: Finished difference Result 441 states and 573 transitions. [2023-12-16 15:53:54,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:53:54,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2023-12-16 15:53:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:54,909 INFO L225 Difference]: With dead ends: 441 [2023-12-16 15:53:54,909 INFO L226 Difference]: Without dead ends: 313 [2023-12-16 15:53:54,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:53:54,910 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 217 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:54,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 578 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:53:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-16 15:53:54,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 188. [2023-12-16 15:53:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 143 states have (on average 1.2167832167832169) internal successors, (174), 144 states have internal predecessors, (174), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 15:53:54,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 242 transitions. [2023-12-16 15:53:54,924 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 242 transitions. Word has length 133 [2023-12-16 15:53:54,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:54,925 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 242 transitions. [2023-12-16 15:53:54,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:54,925 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 242 transitions. [2023-12-16 15:53:54,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 15:53:54,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:54,925 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:54,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 15:53:55,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:55,126 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:55,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash 164715940, now seen corresponding path program 1 times [2023-12-16 15:53:55,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:55,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610410892] [2023-12-16 15:53:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:55,127 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 [2023-12-16 15:53:55,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:55,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:55,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 15:53:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:55,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 15:53:55,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:56,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-16 15:53:56,641 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 28 treesize of output 24 [2023-12-16 15:53:56,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-16 15:53:56,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 100 [2023-12-16 15:53:56,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 73 [2023-12-16 15:53:56,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 62 [2023-12-16 15:53:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 29 proven. 365 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-16 15:53:57,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:53:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:53:57,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:57,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610410892] [2023-12-16 15:53:57,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610410892] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:53:57,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:53:57,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [27] total 32 [2023-12-16 15:53:57,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42936489] [2023-12-16 15:53:57,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:53:57,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 15:53:57,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 15:53:57,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2023-12-16 15:53:57,368 INFO L87 Difference]: Start difference. First operand 188 states and 242 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:57,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:57,640 INFO L93 Difference]: Finished difference Result 408 states and 529 transitions. [2023-12-16 15:53:57,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 15:53:57,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-16 15:53:57,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:57,652 INFO L225 Difference]: With dead ends: 408 [2023-12-16 15:53:57,652 INFO L226 Difference]: Without dead ends: 280 [2023-12-16 15:53:57,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 15:53:57,654 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 291 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:57,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 788 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:53:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-16 15:53:57,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 260. [2023-12-16 15:53:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 208 states have (on average 1.2307692307692308) internal successors, (256), 210 states have internal predecessors, (256), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 15:53:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 336 transitions. [2023-12-16 15:53:57,675 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 336 transitions. Word has length 134 [2023-12-16 15:53:57,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:57,675 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 336 transitions. [2023-12-16 15:53:57,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 336 transitions. [2023-12-16 15:53:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 15:53:57,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:57,676 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:57,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 15:53:57,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:57,885 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:57,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1548816646, now seen corresponding path program 1 times [2023-12-16 15:53:57,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:57,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434185314] [2023-12-16 15:53:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:57,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:57,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:57,887 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:57,944 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 (15)] Waiting until timeout for monitored process [2023-12-16 15:53:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:58,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 15:53:58,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:53:58,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-16 15:53:58,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-16 15:53:58,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-16 15:53:58,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-16 15:53:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 31 proven. 309 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-16 15:53:58,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:53:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:53:58,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:53:58,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434185314] [2023-12-16 15:53:58,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434185314] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:53:58,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:53:58,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-16 15:53:58,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124961686] [2023-12-16 15:53:58,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:53:58,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:53:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:53:58,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:53:58,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:53:58,933 INFO L87 Difference]: Start difference. First operand 260 states and 336 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:53:59,182 INFO L93 Difference]: Finished difference Result 599 states and 777 transitions. [2023-12-16 15:53:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:53:59,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-16 15:53:59,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:53:59,185 INFO L225 Difference]: With dead ends: 599 [2023-12-16 15:53:59,185 INFO L226 Difference]: Without dead ends: 399 [2023-12-16 15:53:59,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:53:59,186 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 204 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:53:59,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 366 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:53:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-16 15:53:59,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 260. [2023-12-16 15:53:59,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 208 states have (on average 1.2211538461538463) internal successors, (254), 210 states have internal predecessors, (254), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 15:53:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2023-12-16 15:53:59,204 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 134 [2023-12-16 15:53:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:53:59,204 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2023-12-16 15:53:59,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:53:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2023-12-16 15:53:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 15:53:59,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:53:59,205 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:53:59,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-16 15:53:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:59,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:53:59,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:53:59,422 INFO L85 PathProgramCache]: Analyzing trace with hash 827705615, now seen corresponding path program 1 times [2023-12-16 15:53:59,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:53:59,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319688198] [2023-12-16 15:53:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:53:59,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:53:59,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:53:59,429 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:53:59,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-16 15:53:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:53:59,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-16 15:53:59,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:00,819 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 37 treesize of output 33 [2023-12-16 15:54:00,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 112 [2023-12-16 15:54:00,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 95 [2023-12-16 15:54:00,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 84 [2023-12-16 15:54:00,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 66 [2023-12-16 15:54:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 19 proven. 300 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-16 15:54:01,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:54:01,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:01,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319688198] [2023-12-16 15:54:01,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319688198] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:54:01,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:54:01,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [23] total 28 [2023-12-16 15:54:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909553285] [2023-12-16 15:54:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:01,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:54:01,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:01,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:54:01,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2023-12-16 15:54:01,288 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:01,624 INFO L93 Difference]: Finished difference Result 610 states and 790 transitions. [2023-12-16 15:54:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 15:54:01,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2023-12-16 15:54:01,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:01,630 INFO L225 Difference]: With dead ends: 610 [2023-12-16 15:54:01,630 INFO L226 Difference]: Without dead ends: 410 [2023-12-16 15:54:01,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 15:54:01,633 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 175 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:01,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 836 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:54:01,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-16 15:54:01,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 270. [2023-12-16 15:54:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 218 states have (on average 1.2201834862385321) internal successors, (266), 220 states have internal predecessors, (266), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 15:54:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 346 transitions. [2023-12-16 15:54:01,664 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 346 transitions. Word has length 135 [2023-12-16 15:54:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:01,664 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 346 transitions. [2023-12-16 15:54:01,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:01,664 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 346 transitions. [2023-12-16 15:54:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 15:54:01,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:01,666 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:01,672 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 (16)] Ended with exit code 0 [2023-12-16 15:54:01,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:01,872 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:01,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash -193362739, now seen corresponding path program 1 times [2023-12-16 15:54:01,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:01,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823152278] [2023-12-16 15:54:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:01,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:01,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:01,874 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:54:01,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-16 15:54:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:02,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:54:02,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:02,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:54:02,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:54:02,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-16 15:54:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 39 proven. 217 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-16 15:54:02,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:02,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:54:02,636 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 15:54:02,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:54:02,642 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 [2023-12-16 15:54:02,894 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:54:02,895 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 [2023-12-16 15:54:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 75 proven. 18 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:54:02,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:02,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823152278] [2023-12-16 15:54:02,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823152278] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:54:02,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:54:02,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-16 15:54:02,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903138593] [2023-12-16 15:54:02,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:54:02,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 15:54:02,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:02,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 15:54:02,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-16 15:54:02,990 INFO L87 Difference]: Start difference. First operand 270 states and 346 transitions. Second operand has 24 states, 20 states have (on average 4.65) internal successors, (93), 22 states have internal predecessors, (93), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:54:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:04,266 INFO L93 Difference]: Finished difference Result 790 states and 1014 transitions. [2023-12-16 15:54:04,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-16 15:54:04,266 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.65) internal successors, (93), 22 states have internal predecessors, (93), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 135 [2023-12-16 15:54:04,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:04,268 INFO L225 Difference]: With dead ends: 790 [2023-12-16 15:54:04,268 INFO L226 Difference]: Without dead ends: 580 [2023-12-16 15:54:04,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=595, Invalid=2057, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 15:54:04,269 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 830 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:04,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1180 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 15:54:04,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-12-16 15:54:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 278. [2023-12-16 15:54:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 226 states have (on average 1.2123893805309736) internal successors, (274), 228 states have internal predecessors, (274), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 15:54:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 354 transitions. [2023-12-16 15:54:04,289 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 354 transitions. Word has length 135 [2023-12-16 15:54:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:04,289 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 354 transitions. [2023-12-16 15:54:04,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.65) internal successors, (93), 22 states have internal predecessors, (93), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:54:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 354 transitions. [2023-12-16 15:54:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 15:54:04,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:04,290 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:04,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:04,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:04,496 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:04,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:04,496 INFO L85 PathProgramCache]: Analyzing trace with hash -941276560, now seen corresponding path program 1 times [2023-12-16 15:54:04,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:04,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642561796] [2023-12-16 15:54:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:04,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:04,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:04,498 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:54:04,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 15:54:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:04,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 15:54:04,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:04,803 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 25 treesize of output 17 [2023-12-16 15:54:04,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-16 15:54:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:54:04,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:54:04,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:04,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642561796] [2023-12-16 15:54:04,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642561796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:54:04,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:54:04,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:54:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868181976] [2023-12-16 15:54:04,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:04,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:54:04,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:54:04,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:54:04,830 INFO L87 Difference]: Start difference. First operand 278 states and 354 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:07,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 15:54:09,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 15:54:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:09,737 INFO L93 Difference]: Finished difference Result 505 states and 641 transitions. [2023-12-16 15:54:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:54:09,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2023-12-16 15:54:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:09,739 INFO L225 Difference]: With dead ends: 505 [2023-12-16 15:54:09,739 INFO L226 Difference]: Without dead ends: 287 [2023-12-16 15:54:09,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 15:54:09,739 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 205 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:09,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 518 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2023-12-16 15:54:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-16 15:54:09,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 278. [2023-12-16 15:54:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 226 states have (on average 1.2079646017699115) internal successors, (273), 228 states have internal predecessors, (273), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 15:54:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 353 transitions. [2023-12-16 15:54:09,762 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 353 transitions. Word has length 135 [2023-12-16 15:54:09,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:09,762 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 353 transitions. [2023-12-16 15:54:09,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:09,762 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 353 transitions. [2023-12-16 15:54:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 15:54:09,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:09,763 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:09,768 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 (18)] Ended with exit code 0 [2023-12-16 15:54:09,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:09,969 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:09,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash -15573882, now seen corresponding path program 1 times [2023-12-16 15:54:09,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:09,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145378678] [2023-12-16 15:54:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:09,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:09,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:09,971 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:54:09,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-16 15:54:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:10,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 15:54:10,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:10,602 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 42 treesize of output 26 [2023-12-16 15:54:10,614 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 12 treesize of output 8 [2023-12-16 15:54:10,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-16 15:54:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 35 proven. 279 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-16 15:54:10,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:10,950 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:54:10,950 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 [2023-12-16 15:54:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 63 proven. 30 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:54:11,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:11,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145378678] [2023-12-16 15:54:11,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145378678] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:54:11,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:54:11,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-16 15:54:11,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961772929] [2023-12-16 15:54:11,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:54:11,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 15:54:11,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 15:54:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-16 15:54:11,030 INFO L87 Difference]: Start difference. First operand 278 states and 353 transitions. Second operand has 24 states, 20 states have (on average 4.55) internal successors, (91), 22 states have internal predecessors, (91), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:54:12,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:12,438 INFO L93 Difference]: Finished difference Result 652 states and 827 transitions. [2023-12-16 15:54:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-16 15:54:12,438 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.55) internal successors, (91), 22 states have internal predecessors, (91), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 135 [2023-12-16 15:54:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:12,439 INFO L225 Difference]: With dead ends: 652 [2023-12-16 15:54:12,439 INFO L226 Difference]: Without dead ends: 434 [2023-12-16 15:54:12,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=579, Invalid=1971, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 15:54:12,441 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1007 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:12,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1456 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 15:54:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-12-16 15:54:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 270. [2023-12-16 15:54:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 218 states have (on average 1.1972477064220184) internal successors, (261), 220 states have internal predecessors, (261), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 15:54:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 341 transitions. [2023-12-16 15:54:12,460 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 341 transitions. Word has length 135 [2023-12-16 15:54:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:12,460 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 341 transitions. [2023-12-16 15:54:12,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.55) internal successors, (91), 22 states have internal predecessors, (91), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:54:12,460 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 341 transitions. [2023-12-16 15:54:12,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 15:54:12,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:12,461 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:12,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-16 15:54:12,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:12,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:12,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash -218993786, now seen corresponding path program 1 times [2023-12-16 15:54:12,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:12,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417272311] [2023-12-16 15:54:12,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:12,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:12,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:12,670 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:54:12,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 15:54:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:12,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 15:54:12,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:13,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:54:13,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:54:13,332 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 17 treesize of output 9 [2023-12-16 15:54:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 35 proven. 279 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-16 15:54:13,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:13,655 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:54:13,655 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 [2023-12-16 15:54:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 63 proven. 30 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:54:13,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417272311] [2023-12-16 15:54:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417272311] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:54:13,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:54:13,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-16 15:54:13,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446015734] [2023-12-16 15:54:13,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:54:13,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 15:54:13,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 15:54:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-16 15:54:13,732 INFO L87 Difference]: Start difference. First operand 270 states and 341 transitions. Second operand has 24 states, 20 states have (on average 4.75) internal successors, (95), 22 states have internal predecessors, (95), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:54:15,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:15,290 INFO L93 Difference]: Finished difference Result 758 states and 963 transitions. [2023-12-16 15:54:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-16 15:54:15,291 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.75) internal successors, (95), 22 states have internal predecessors, (95), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 135 [2023-12-16 15:54:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:15,292 INFO L225 Difference]: With dead ends: 758 [2023-12-16 15:54:15,292 INFO L226 Difference]: Without dead ends: 548 [2023-12-16 15:54:15,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=595, Invalid=2057, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 15:54:15,294 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 456 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:15,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 2238 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 15:54:15,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-12-16 15:54:15,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 238. [2023-12-16 15:54:15,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 186 states have (on average 1.1827956989247312) internal successors, (220), 188 states have internal predecessors, (220), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 15:54:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 300 transitions. [2023-12-16 15:54:15,315 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 300 transitions. Word has length 135 [2023-12-16 15:54:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:15,315 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 300 transitions. [2023-12-16 15:54:15,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.75) internal successors, (95), 22 states have internal predecessors, (95), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:54:15,315 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 300 transitions. [2023-12-16 15:54:15,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-16 15:54:15,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:15,316 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:15,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:15,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:15,525 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:15,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:15,526 INFO L85 PathProgramCache]: Analyzing trace with hash 730338792, now seen corresponding path program 1 times [2023-12-16 15:54:15,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:15,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936072618] [2023-12-16 15:54:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:15,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:15,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:15,527 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:54:15,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 15:54:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:15,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 15:54:15,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:15,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-16 15:54:15,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-16 15:54:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:54:15,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:54:15,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:15,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936072618] [2023-12-16 15:54:15,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936072618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:54:15,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:54:15,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:54:15,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169215976] [2023-12-16 15:54:15,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:15,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:54:15,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:54:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:54:15,872 INFO L87 Difference]: Start difference. First operand 238 states and 300 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:16,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:16,122 INFO L93 Difference]: Finished difference Result 409 states and 514 transitions. [2023-12-16 15:54:16,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:54:16,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2023-12-16 15:54:16,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:16,123 INFO L225 Difference]: With dead ends: 409 [2023-12-16 15:54:16,123 INFO L226 Difference]: Without dead ends: 231 [2023-12-16 15:54:16,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 15:54:16,124 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 210 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:16,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 410 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:54:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-16 15:54:16,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2023-12-16 15:54:16,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 177 states have (on average 1.1694915254237288) internal successors, (207), 179 states have internal predecessors, (207), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 15:54:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 287 transitions. [2023-12-16 15:54:16,159 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 287 transitions. Word has length 136 [2023-12-16 15:54:16,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:16,160 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 287 transitions. [2023-12-16 15:54:16,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 287 transitions. [2023-12-16 15:54:16,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-16 15:54:16,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:16,168 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:16,173 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 (21)] Ended with exit code 0 [2023-12-16 15:54:16,376 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 [2023-12-16 15:54:16,376 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:16,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:16,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1271531596, now seen corresponding path program 1 times [2023-12-16 15:54:16,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:16,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359642808] [2023-12-16 15:54:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:16,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:16,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:16,378 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) [2023-12-16 15:54:16,379 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 [2023-12-16 15:54:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:16,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 15:54:16,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:54:16,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:54:16,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:16,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359642808] [2023-12-16 15:54:16,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359642808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:54:16,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:54:16,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:54:16,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407887482] [2023-12-16 15:54:16,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:16,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:54:16,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:54:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:54:16,667 INFO L87 Difference]: Start difference. First operand 229 states and 287 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:16,756 INFO L93 Difference]: Finished difference Result 419 states and 527 transitions. [2023-12-16 15:54:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 15:54:16,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 137 [2023-12-16 15:54:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:16,777 INFO L225 Difference]: With dead ends: 419 [2023-12-16 15:54:16,777 INFO L226 Difference]: Without dead ends: 250 [2023-12-16 15:54:16,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 15:54:16,778 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 80 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:16,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 604 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:54:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-16 15:54:16,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 233. [2023-12-16 15:54:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 181 states have (on average 1.1657458563535912) internal successors, (211), 183 states have internal predecessors, (211), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 15:54:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 291 transitions. [2023-12-16 15:54:16,802 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 291 transitions. Word has length 137 [2023-12-16 15:54:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:16,802 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 291 transitions. [2023-12-16 15:54:16,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 291 transitions. [2023-12-16 15:54:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:16,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:16,806 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:16,826 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 [2023-12-16 15:54:17,012 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 [2023-12-16 15:54:17,012 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:17,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash 560057651, now seen corresponding path program 1 times [2023-12-16 15:54:17,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:17,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864525988] [2023-12-16 15:54:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:17,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:17,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:17,029 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:54:17,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-16 15:54:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:17,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 15:54:17,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:17,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-16 15:54:17,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 52 [2023-12-16 15:54:17,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-16 15:54:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 31 proven. 309 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-16 15:54:17,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:54:18,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:18,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864525988] [2023-12-16 15:54:18,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864525988] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:54:18,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:54:18,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2023-12-16 15:54:18,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337958138] [2023-12-16 15:54:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:18,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:54:18,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:54:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-16 15:54:18,044 INFO L87 Difference]: Start difference. First operand 233 states and 291 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:18,139 INFO L93 Difference]: Finished difference Result 243 states and 301 transitions. [2023-12-16 15:54:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:54:18,140 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-16 15:54:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:18,155 INFO L225 Difference]: With dead ends: 243 [2023-12-16 15:54:18,155 INFO L226 Difference]: Without dead ends: 241 [2023-12-16 15:54:18,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:54:18,157 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 66 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:18,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 471 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:54:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-16 15:54:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2023-12-16 15:54:18,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 188 states have (on average 1.1595744680851063) internal successors, (218), 190 states have internal predecessors, (218), 40 states have call successors, (40), 12 states have call predecessors, (40), 12 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 15:54:18,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 298 transitions. [2023-12-16 15:54:18,178 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 298 transitions. Word has length 138 [2023-12-16 15:54:18,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:18,178 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 298 transitions. [2023-12-16 15:54:18,178 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 298 transitions. [2023-12-16 15:54:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:18,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:18,179 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:18,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:18,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:18,385 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:18,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash 560117233, now seen corresponding path program 1 times [2023-12-16 15:54:18,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:18,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560569259] [2023-12-16 15:54:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:18,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:18,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:18,387 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:54:18,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-16 15:54:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:18,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 15:54:18,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:19,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 15:54:19,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 89 [2023-12-16 15:54:19,404 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 113 treesize of output 65 [2023-12-16 15:54:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:54:19,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:54:19,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:19,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560569259] [2023-12-16 15:54:19,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560569259] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:54:19,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:54:19,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2023-12-16 15:54:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980779342] [2023-12-16 15:54:19,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:19,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:54:19,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:19,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:54:19,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:54:19,571 INFO L87 Difference]: Start difference. First operand 241 states and 298 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:19,829 INFO L93 Difference]: Finished difference Result 591 states and 726 transitions. [2023-12-16 15:54:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:54:19,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-16 15:54:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:19,831 INFO L225 Difference]: With dead ends: 591 [2023-12-16 15:54:19,831 INFO L226 Difference]: Without dead ends: 410 [2023-12-16 15:54:19,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-16 15:54:19,831 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 144 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:19,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 604 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:54:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-16 15:54:19,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 407. [2023-12-16 15:54:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 325 states have (on average 1.1538461538461537) internal successors, (375), 329 states have internal predecessors, (375), 62 states have call successors, (62), 19 states have call predecessors, (62), 19 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-16 15:54:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 499 transitions. [2023-12-16 15:54:19,865 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 499 transitions. Word has length 138 [2023-12-16 15:54:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:19,865 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 499 transitions. [2023-12-16 15:54:19,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 499 transitions. [2023-12-16 15:54:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:19,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:19,866 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:19,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:20,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:20,071 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:20,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:20,072 INFO L85 PathProgramCache]: Analyzing trace with hash 617375535, now seen corresponding path program 1 times [2023-12-16 15:54:20,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:20,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735548173] [2023-12-16 15:54:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:20,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:20,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:20,073 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:54:20,074 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 (25)] Waiting until timeout for monitored process [2023-12-16 15:54:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:20,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 15:54:20,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:20,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-16 15:54:20,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 45 [2023-12-16 15:54:20,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 34 [2023-12-16 15:54:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:54:20,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:54:20,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:20,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735548173] [2023-12-16 15:54:20,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735548173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:54:20,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:54:20,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 15:54:20,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021832640] [2023-12-16 15:54:20,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:20,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:54:20,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:20,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:54:20,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:54:20,526 INFO L87 Difference]: Start difference. First operand 407 states and 499 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:20,856 INFO L93 Difference]: Finished difference Result 848 states and 1018 transitions. [2023-12-16 15:54:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 15:54:20,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-16 15:54:20,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:20,857 INFO L225 Difference]: With dead ends: 848 [2023-12-16 15:54:20,858 INFO L226 Difference]: Without dead ends: 501 [2023-12-16 15:54:20,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-16 15:54:20,859 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 226 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:20,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 678 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:54:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-16 15:54:20,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 398. [2023-12-16 15:54:20,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 318 states have (on average 1.1352201257861636) internal successors, (361), 322 states have internal predecessors, (361), 60 states have call successors, (60), 19 states have call predecessors, (60), 19 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:54:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 481 transitions. [2023-12-16 15:54:20,900 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 481 transitions. Word has length 138 [2023-12-16 15:54:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:20,900 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 481 transitions. [2023-12-16 15:54:20,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 481 transitions. [2023-12-16 15:54:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:20,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:20,902 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:20,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:21,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:21,109 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:21,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:21,109 INFO L85 PathProgramCache]: Analyzing trace with hash -191971091, now seen corresponding path program 1 times [2023-12-16 15:54:21,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:21,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950373614] [2023-12-16 15:54:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:21,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:21,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:21,111 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:54:21,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-16 15:54:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:21,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 15:54:21,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:21,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:54:21,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-16 15:54:21,965 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 42 treesize of output 26 [2023-12-16 15:54:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 39 proven. 217 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-16 15:54:22,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:22,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:54:22,295 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 15:54:22,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:54:22,302 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 [2023-12-16 15:54:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:54:22,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:22,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950373614] [2023-12-16 15:54:22,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950373614] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:54:22,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:54:22,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 24 [2023-12-16 15:54:22,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962266093] [2023-12-16 15:54:22,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:22,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 15:54:22,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 15:54:22,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2023-12-16 15:54:22,399 INFO L87 Difference]: Start difference. First operand 398 states and 481 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:22,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:22,836 INFO L93 Difference]: Finished difference Result 822 states and 981 transitions. [2023-12-16 15:54:22,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 15:54:22,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-16 15:54:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:22,838 INFO L225 Difference]: With dead ends: 822 [2023-12-16 15:54:22,838 INFO L226 Difference]: Without dead ends: 451 [2023-12-16 15:54:22,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2023-12-16 15:54:22,839 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 159 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:22,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 810 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:54:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-16 15:54:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 406. [2023-12-16 15:54:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 326 states have (on average 1.1319018404907975) internal successors, (369), 330 states have internal predecessors, (369), 60 states have call successors, (60), 19 states have call predecessors, (60), 19 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:54:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 489 transitions. [2023-12-16 15:54:22,888 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 489 transitions. Word has length 138 [2023-12-16 15:54:22,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:22,888 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 489 transitions. [2023-12-16 15:54:22,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:22,889 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 489 transitions. [2023-12-16 15:54:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:22,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:22,889 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:22,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:23,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:23,095 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:23,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:23,096 INFO L85 PathProgramCache]: Analyzing trace with hash 66194347, now seen corresponding path program 1 times [2023-12-16 15:54:23,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:23,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656413359] [2023-12-16 15:54:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:23,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:23,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:23,107 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) [2023-12-16 15:54:23,139 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 [2023-12-16 15:54:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:23,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 15:54:23,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:23,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2023-12-16 15:54:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 35 proven. 279 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-16 15:54:23,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:24,078 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:54:24,078 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 [2023-12-16 15:54:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 63 proven. 30 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:54:24,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:24,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656413359] [2023-12-16 15:54:24,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656413359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:54:24,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:54:24,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-12-16 15:54:24,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056833012] [2023-12-16 15:54:24,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:54:24,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 15:54:24,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:24,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 15:54:24,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:54:24,154 INFO L87 Difference]: Start difference. First operand 406 states and 489 transitions. Second operand has 20 states, 16 states have (on average 6.5) internal successors, (104), 18 states have internal predecessors, (104), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:54:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:24,812 INFO L93 Difference]: Finished difference Result 787 states and 943 transitions. [2023-12-16 15:54:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 15:54:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 6.5) internal successors, (104), 18 states have internal predecessors, (104), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 138 [2023-12-16 15:54:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:24,814 INFO L225 Difference]: With dead ends: 787 [2023-12-16 15:54:24,814 INFO L226 Difference]: Without dead ends: 408 [2023-12-16 15:54:24,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2023-12-16 15:54:24,815 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 350 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:24,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 764 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:54:24,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-12-16 15:54:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 404. [2023-12-16 15:54:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 324 states have (on average 1.1203703703703705) internal successors, (363), 328 states have internal predecessors, (363), 60 states have call successors, (60), 19 states have call predecessors, (60), 19 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:54:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 483 transitions. [2023-12-16 15:54:24,858 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 483 transitions. Word has length 138 [2023-12-16 15:54:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:24,858 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 483 transitions. [2023-12-16 15:54:24,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 6.5) internal successors, (104), 18 states have internal predecessors, (104), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:54:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 483 transitions. [2023-12-16 15:54:24,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:24,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:24,859 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:24,882 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 [2023-12-16 15:54:25,065 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 [2023-12-16 15:54:25,065 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:25,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:25,066 INFO L85 PathProgramCache]: Analyzing trace with hash -663546730, now seen corresponding path program 1 times [2023-12-16 15:54:25,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:25,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833550155] [2023-12-16 15:54:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:25,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:25,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:25,067 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) [2023-12-16 15:54:25,084 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 [2023-12-16 15:54:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:25,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 15:54:25,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:25,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:54:25,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:54:25,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-16 15:54:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 39 proven. 217 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-16 15:54:25,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:25,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:54:25,947 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 15:54:25,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:54:25,952 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 [2023-12-16 15:54:26,264 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:54:26,265 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 [2023-12-16 15:54:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 75 proven. 18 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-16 15:54:26,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:26,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833550155] [2023-12-16 15:54:26,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833550155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:54:26,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:54:26,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2023-12-16 15:54:26,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366691943] [2023-12-16 15:54:26,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:54:26,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 15:54:26,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:26,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 15:54:26,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2023-12-16 15:54:26,356 INFO L87 Difference]: Start difference. First operand 404 states and 483 transitions. Second operand has 29 states, 25 states have (on average 4.2) internal successors, (105), 27 states have internal predecessors, (105), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:54:27,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:27,844 INFO L93 Difference]: Finished difference Result 861 states and 1017 transitions. [2023-12-16 15:54:27,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-16 15:54:27,844 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.2) internal successors, (105), 27 states have internal predecessors, (105), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 138 [2023-12-16 15:54:27,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:27,846 INFO L225 Difference]: With dead ends: 861 [2023-12-16 15:54:27,846 INFO L226 Difference]: Without dead ends: 484 [2023-12-16 15:54:27,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=739, Invalid=3043, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 15:54:27,848 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 589 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:27,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1197 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 15:54:27,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-12-16 15:54:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 406. [2023-12-16 15:54:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 326 states have (on average 1.1196319018404908) internal successors, (365), 330 states have internal predecessors, (365), 60 states have call successors, (60), 19 states have call predecessors, (60), 19 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:54:27,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 485 transitions. [2023-12-16 15:54:27,905 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 485 transitions. Word has length 138 [2023-12-16 15:54:27,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:27,905 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 485 transitions. [2023-12-16 15:54:27,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.2) internal successors, (105), 27 states have internal predecessors, (105), 7 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 15:54:27,905 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 485 transitions. [2023-12-16 15:54:27,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:27,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:27,906 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:27,915 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 [2023-12-16 15:54:28,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:28,113 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:28,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash -405381292, now seen corresponding path program 1 times [2023-12-16 15:54:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:28,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744844209] [2023-12-16 15:54:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:28,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:28,115 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:54:28,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-16 15:54:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:28,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 15:54:28,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:29,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:54:29,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:54:29,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-16 15:54:29,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:54:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 37 proven. 305 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-16 15:54:29,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:30,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2023-12-16 15:54:30,211 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 15:54:30,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:54:30,216 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 [2023-12-16 15:54:30,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:54:30,910 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 58 treesize of output 53 [2023-12-16 15:54:31,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:54:31,438 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 37 treesize of output 36 [2023-12-16 15:54:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 126 proven. 48 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-12-16 15:54:31,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744844209] [2023-12-16 15:54:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744844209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:54:31,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:54:31,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 48 [2023-12-16 15:54:31,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940465757] [2023-12-16 15:54:31,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:54:31,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 15:54:31,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 15:54:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1961, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 15:54:31,666 INFO L87 Difference]: Start difference. First operand 406 states and 485 transitions. Second operand has 48 states, 40 states have (on average 2.975) internal successors, (119), 41 states have internal predecessors, (119), 11 states have call successors, (34), 6 states have call predecessors, (34), 11 states have return successors, (34), 9 states have call predecessors, (34), 11 states have call successors, (34) [2023-12-16 15:54:34,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:34,777 INFO L93 Difference]: Finished difference Result 801 states and 947 transitions. [2023-12-16 15:54:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-16 15:54:34,778 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 40 states have (on average 2.975) internal successors, (119), 41 states have internal predecessors, (119), 11 states have call successors, (34), 6 states have call predecessors, (34), 11 states have return successors, (34), 9 states have call predecessors, (34), 11 states have call successors, (34) Word has length 138 [2023-12-16 15:54:34,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:34,779 INFO L225 Difference]: With dead ends: 801 [2023-12-16 15:54:34,779 INFO L226 Difference]: Without dead ends: 422 [2023-12-16 15:54:34,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1138, Invalid=4868, Unknown=0, NotChecked=0, Total=6006 [2023-12-16 15:54:34,781 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 832 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:34,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2254 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 15:54:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-16 15:54:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 392. [2023-12-16 15:54:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 312 states have (on average 1.1153846153846154) internal successors, (348), 316 states have internal predecessors, (348), 60 states have call successors, (60), 19 states have call predecessors, (60), 19 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:54:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 468 transitions. [2023-12-16 15:54:34,823 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 468 transitions. Word has length 138 [2023-12-16 15:54:34,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:34,823 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 468 transitions. [2023-12-16 15:54:34,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 40 states have (on average 2.975) internal successors, (119), 41 states have internal predecessors, (119), 11 states have call successors, (34), 6 states have call predecessors, (34), 11 states have return successors, (34), 9 states have call predecessors, (34), 11 states have call successors, (34) [2023-12-16 15:54:34,823 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 468 transitions. [2023-12-16 15:54:34,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:34,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:34,824 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:34,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:35,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:35,030 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:35,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1489774744, now seen corresponding path program 1 times [2023-12-16 15:54:35,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:35,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376799886] [2023-12-16 15:54:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:35,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:35,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:35,032 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) [2023-12-16 15:54:35,036 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 [2023-12-16 15:54:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:35,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:54:35,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:35,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-16 15:54:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:54:35,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:54:35,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:35,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376799886] [2023-12-16 15:54:35,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376799886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:54:35,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:54:35,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:54:35,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647406465] [2023-12-16 15:54:35,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:35,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:54:35,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:35,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:54:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:54:35,388 INFO L87 Difference]: Start difference. First operand 392 states and 468 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:35,752 INFO L93 Difference]: Finished difference Result 810 states and 956 transitions. [2023-12-16 15:54:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:54:35,754 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-16 15:54:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:35,755 INFO L225 Difference]: With dead ends: 810 [2023-12-16 15:54:35,755 INFO L226 Difference]: Without dead ends: 445 [2023-12-16 15:54:35,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:54:35,757 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 121 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:35,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 700 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 15:54:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-16 15:54:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 388. [2023-12-16 15:54:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 308 states have (on average 1.1103896103896105) internal successors, (342), 312 states have internal predecessors, (342), 60 states have call successors, (60), 19 states have call predecessors, (60), 19 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:54:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 462 transitions. [2023-12-16 15:54:35,801 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 462 transitions. Word has length 138 [2023-12-16 15:54:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:35,801 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 462 transitions. [2023-12-16 15:54:35,801 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 462 transitions. [2023-12-16 15:54:35,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:35,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:35,802 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:35,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-12-16 15:54:36,008 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 [2023-12-16 15:54:36,008 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:36,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1018199105, now seen corresponding path program 1 times [2023-12-16 15:54:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:36,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284175121] [2023-12-16 15:54:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:36,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:36,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:36,010 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) [2023-12-16 15:54:36,044 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 [2023-12-16 15:54:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:36,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:54:36,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:37,037 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 88 treesize of output 52 [2023-12-16 15:54:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:54:37,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:37,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:37,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284175121] [2023-12-16 15:54:37,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284175121] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:54:37,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1005075054] [2023-12-16 15:54:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:37,162 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:54:37,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:54:37,164 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:54:37,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-16 15:54:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:37,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:54:37,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-16 15:54:37,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:54:37,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1005075054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:54:37,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:54:37,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-12-16 15:54:37,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857664800] [2023-12-16 15:54:37,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:37,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:54:37,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:37,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:54:37,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-16 15:54:37,903 INFO L87 Difference]: Start difference. First operand 388 states and 462 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:38,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:38,120 INFO L93 Difference]: Finished difference Result 934 states and 1106 transitions. [2023-12-16 15:54:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:54:38,121 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-16 15:54:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:38,123 INFO L225 Difference]: With dead ends: 934 [2023-12-16 15:54:38,123 INFO L226 Difference]: Without dead ends: 573 [2023-12-16 15:54:38,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-16 15:54:38,124 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 99 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:38,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 733 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:54:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-12-16 15:54:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 443. [2023-12-16 15:54:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 363 states have (on average 1.115702479338843) internal successors, (405), 367 states have internal predecessors, (405), 60 states have call successors, (60), 19 states have call predecessors, (60), 19 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:54:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 525 transitions. [2023-12-16 15:54:38,177 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 525 transitions. Word has length 138 [2023-12-16 15:54:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:38,178 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 525 transitions. [2023-12-16 15:54:38,178 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 15:54:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 525 transitions. [2023-12-16 15:54:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:38,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:38,178 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:38,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:38,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:38,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 15:54:38,585 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:38,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:38,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1276364543, now seen corresponding path program 1 times [2023-12-16 15:54:38,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:38,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538659857] [2023-12-16 15:54:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:38,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:38,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:38,587 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) [2023-12-16 15:54:38,588 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 [2023-12-16 15:54:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:38,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:54:38,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:39,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 52 [2023-12-16 15:54:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:54:39,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:39,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:39,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538659857] [2023-12-16 15:54:39,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538659857] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:54:39,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [940224837] [2023-12-16 15:54:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:39,786 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:54:39,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:54:39,787 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:54:39,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2023-12-16 15:54:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:40,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 15:54:40,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:41,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 15:54:41,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 15:54:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:54:41,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:54:41,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [940224837] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:54:41,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:54:41,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-16 15:54:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051776625] [2023-12-16 15:54:41,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:54:41,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 15:54:41,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:41,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 15:54:41,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-16 15:54:41,617 INFO L87 Difference]: Start difference. First operand 443 states and 525 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2023-12-16 15:54:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:42,682 INFO L93 Difference]: Finished difference Result 1049 states and 1234 transitions. [2023-12-16 15:54:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 15:54:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 138 [2023-12-16 15:54:42,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:42,686 INFO L225 Difference]: With dead ends: 1049 [2023-12-16 15:54:42,686 INFO L226 Difference]: Without dead ends: 633 [2023-12-16 15:54:42,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-12-16 15:54:42,687 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 428 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:42,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 808 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 15:54:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-12-16 15:54:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 452. [2023-12-16 15:54:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 370 states have (on average 1.1162162162162161) internal successors, (413), 374 states have internal predecessors, (413), 61 states have call successors, (61), 20 states have call predecessors, (61), 20 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-16 15:54:42,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 535 transitions. [2023-12-16 15:54:42,756 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 535 transitions. Word has length 138 [2023-12-16 15:54:42,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:42,756 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 535 transitions. [2023-12-16 15:54:42,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2023-12-16 15:54:42,756 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 535 transitions. [2023-12-16 15:54:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 15:54:42,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:42,757 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:42,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:42,970 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 (33)] Ended with exit code 0 [2023-12-16 15:54:43,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-16 15:54:43,170 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:43,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash -95442755, now seen corresponding path program 1 times [2023-12-16 15:54:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:43,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847893485] [2023-12-16 15:54:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:43,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:43,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:43,172 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) [2023-12-16 15:54:43,172 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 [2023-12-16 15:54:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:43,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 15:54:43,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:54:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:54:43,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:54:43,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:54:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847893485] [2023-12-16 15:54:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847893485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:54:43,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:54:43,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 15:54:43,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975630826] [2023-12-16 15:54:43,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:54:43,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:54:43,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:54:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:54:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:54:43,471 INFO L87 Difference]: Start difference. First operand 452 states and 535 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 15:54:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:54:43,572 INFO L93 Difference]: Finished difference Result 881 states and 1039 transitions. [2023-12-16 15:54:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:54:43,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2023-12-16 15:54:43,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:54:43,575 INFO L225 Difference]: With dead ends: 881 [2023-12-16 15:54:43,575 INFO L226 Difference]: Without dead ends: 456 [2023-12-16 15:54:43,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:54:43,576 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 7 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:54:43,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 364 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:54:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-16 15:54:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 452. [2023-12-16 15:54:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 370 states have (on average 1.1135135135135135) internal successors, (412), 374 states have internal predecessors, (412), 61 states have call successors, (61), 20 states have call predecessors, (61), 20 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-16 15:54:43,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 534 transitions. [2023-12-16 15:54:43,629 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 534 transitions. Word has length 138 [2023-12-16 15:54:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:54:43,629 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 534 transitions. [2023-12-16 15:54:43,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 15:54:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 534 transitions. [2023-12-16 15:54:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 15:54:43,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:54:43,630 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:43,650 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 (35)] Forceful destruction successful, exit code 0 [2023-12-16 15:54:43,837 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 [2023-12-16 15:54:43,837 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:54:43,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:54:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1698699943, now seen corresponding path program 1 times [2023-12-16 15:54:43,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:54:43,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246094655] [2023-12-16 15:54:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:54:43,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:54:43,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:54:43,839 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) [2023-12-16 15:54:43,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-16 15:54:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:54:44,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 15:54:44,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 15:54:44,459 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 15:54:44,474 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 (36)] Ended with exit code 0 [2023-12-16 15:54:44,491 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 15:54:44,506 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 15:54:44,659 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 [2023-12-16 15:54:44,660 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 140 with TraceHistMax 17,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-16 15:54:44,663 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:54:44,665 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 15:54:44,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:54:44 BoogieIcfgContainer [2023-12-16 15:54:44,666 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 15:54:44,667 INFO L158 Benchmark]: Toolchain (without parser) took 70986.98ms. Allocated memory was 162.5MB in the beginning and 425.7MB in the end (delta: 263.2MB). Free memory was 114.3MB in the beginning and 294.8MB in the end (delta: -180.5MB). Peak memory consumption was 83.5MB. Max. memory is 8.0GB. [2023-12-16 15:54:44,667 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 162.5MB. Free memory is still 111.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:54:44,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.12ms. Allocated memory is still 162.5MB. Free memory was 114.3MB in the beginning and 99.3MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 15:54:44,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.64ms. Allocated memory is still 162.5MB. Free memory was 99.3MB in the beginning and 96.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 15:54:44,667 INFO L158 Benchmark]: Boogie Preprocessor took 91.63ms. Allocated memory is still 162.5MB. Free memory was 96.1MB in the beginning and 89.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 15:54:44,667 INFO L158 Benchmark]: RCFGBuilder took 797.55ms. Allocated memory was 162.5MB in the beginning and 224.4MB in the end (delta: 61.9MB). Free memory was 89.5MB in the beginning and 154.6MB in the end (delta: -65.1MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. [2023-12-16 15:54:44,667 INFO L158 Benchmark]: TraceAbstraction took 69796.10ms. Allocated memory was 224.4MB in the beginning and 425.7MB in the end (delta: 201.3MB). Free memory was 154.1MB in the beginning and 294.8MB in the end (delta: -140.7MB). Peak memory consumption was 61.2MB. Max. memory is 8.0GB. [2023-12-16 15:54:44,668 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 162.5MB. Free memory is still 111.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 244.12ms. Allocated memory is still 162.5MB. Free memory was 114.3MB in the beginning and 99.3MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.64ms. Allocated memory is still 162.5MB. Free memory was 99.3MB in the beginning and 96.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 91.63ms. Allocated memory is still 162.5MB. Free memory was 96.1MB in the beginning and 89.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 797.55ms. Allocated memory was 162.5MB in the beginning and 224.4MB in the end (delta: 61.9MB). Free memory was 89.5MB in the beginning and 154.6MB in the end (delta: -65.1MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. * TraceAbstraction took 69796.10ms. Allocated memory was 224.4MB in the beginning and 425.7MB in the end (delta: 201.3MB). Free memory was 154.1MB in the beginning and 294.8MB in the end (delta: -140.7MB). Peak memory consumption was 61.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 140 with TraceHistMax 17,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.7s, OverallIterations: 33, TraceHistogramMax: 17, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 12074 SdHoareTripleChecker+Valid, 16.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12060 mSDsluCounter, 28907 SdHoareTripleChecker+Invalid, 15.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24029 mSDsCounter, 3062 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11486 IncrementalHoareTripleChecker+Invalid, 14550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3062 mSolverCounterUnsat, 4878 mSDtfsCounter, 11486 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7574 GetRequests, 6705 SyntacticMatches, 14 SemanticMatches, 855 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7717 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=452occurred in iteration=31, InterpolantAutomatonStates: 528, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 32 MinimizatonAttempts, 2499 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 24.5s InterpolantComputationTime, 4583 NumberOfCodeBlocks, 4583 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 7079 ConstructedInterpolants, 55 QuantifiedInterpolants, 55870 SizeOfPredicates, 431 NumberOfNonLiveVariables, 12205 ConjunctsInSsa, 496 ConjunctsInUnsatCore, 53 InterpolantComputations, 19 PerfectInterpolantSequences, 23385/28832 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown