/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-ap_file-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 15:04:38,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 15:04:38,290 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 15:04:38,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 15:04:38,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 15:04:38,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 15:04:38,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 15:04:38,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 15:04:38,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 15:04:38,324 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 15:04:38,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 15:04:38,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 15:04:38,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 15:04:38,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 15:04:38,326 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 15:04:38,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 15:04:38,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 15:04:38,327 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 15:04:38,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 15:04:38,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 15:04:38,327 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 15:04:38,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 15:04:38,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 15:04:38,328 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 15:04:38,328 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 15:04:38,328 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 15:04:38,328 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 15:04:38,328 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 15:04:38,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 15:04:38,328 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 15:04:38,329 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 15:04:38,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 15:04:38,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 15:04:38,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 15:04:38,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:04:38,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 15:04:38,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 15:04:38,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 15:04:38,330 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 15:04:38,330 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 15:04:38,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 15:04:38,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 15:04:38,330 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 15:04:38,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 15:04:38,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 15:04:38,331 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 15:04:38,331 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 15:04:38,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 15:04:38,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 15:04:38,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 15:04:38,530 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 15:04:38,548 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 15:04:38,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-5.i [2023-12-24 15:04:39,496 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 15:04:39,682 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 15:04:39,683 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-5.i [2023-12-24 15:04:39,689 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57c8989f/4784eefae48e414190474def9c460e50/FLAG74264c856 [2023-12-24 15:04:39,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57c8989f/4784eefae48e414190474def9c460e50 [2023-12-24 15:04:39,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 15:04:39,706 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 15:04:39,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 15:04:39,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 15:04:39,711 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 15:04:39,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:39,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a14389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39, skipping insertion in model container [2023-12-24 15:04:39,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:39,744 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 15:04:39,846 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-ap_file-5.i[916,929] [2023-12-24 15:04:39,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:04:39,907 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 15:04:39,915 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-ap_file-5.i[916,929] [2023-12-24 15:04:39,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:04:39,956 INFO L206 MainTranslator]: Completed translation [2023-12-24 15:04:39,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39 WrapperNode [2023-12-24 15:04:39,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 15:04:39,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 15:04:39,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 15:04:39,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 15:04:39,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:39,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,005 INFO L138 Inliner]: procedures = 33, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 430 [2023-12-24 15:04:40,005 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 15:04:40,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 15:04:40,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 15:04:40,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 15:04:40,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,020 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,039 INFO L175 MemorySlicer]: Split 122 memory accesses to 6 slices as follows [2, 6, 3, 28, 59, 24]. 48 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 1, 6, 4, 3]. The 17 writes are split as follows [0, 1, 1, 6, 6, 3]. [2023-12-24 15:04:40,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,109 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 15:04:40,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 15:04:40,109 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 15:04:40,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 15:04:40,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (1/1) ... [2023-12-24 15:04:40,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:04:40,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 15:04:40,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 15:04:40,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 15:04:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 15:04:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 15:04:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 15:04:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 15:04:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 15:04:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 15:04:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 15:04:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 15:04:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 15:04:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 15:04:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 15:04:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 15:04:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 15:04:40,277 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 15:04:40,278 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 15:04:40,836 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 15:04:40,860 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 15:04:40,860 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 15:04:40,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:04:40 BoogieIcfgContainer [2023-12-24 15:04:40,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 15:04:40,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 15:04:40,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 15:04:40,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 15:04:40,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 03:04:39" (1/3) ... [2023-12-24 15:04:40,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1291d621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:04:40, skipping insertion in model container [2023-12-24 15:04:40,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:04:39" (2/3) ... [2023-12-24 15:04:40,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1291d621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:04:40, skipping insertion in model container [2023-12-24 15:04:40,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:04:40" (3/3) ... [2023-12-24 15:04:40,866 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-5.i [2023-12-24 15:04:40,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 15:04:40,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 15:04:40,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 15:04:40,910 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;@760864c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 15:04:40,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 15:04:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 66 states have internal predecessors, (89), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:04:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 15:04:40,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:04:40,926 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:04:40,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:04:40,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:04:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1626294328, now seen corresponding path program 1 times [2023-12-24 15:04:40,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:04:40,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135141430] [2023-12-24 15:04:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:04:40,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:40,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:04:40,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:04:40,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 15:04:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:04:41,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 15:04:41,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:04:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-12-24 15:04:41,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:04:41,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:04:41,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135141430] [2023-12-24 15:04:41,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135141430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:04:41,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:04:41,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 15:04:41,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287778125] [2023-12-24 15:04:41,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:04:41,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 15:04:41,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:04:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 15:04:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:04:41,284 INFO L87 Difference]: Start difference. First operand has 88 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 66 states have internal predecessors, (89), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 15:04:41,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:04:41,352 INFO L93 Difference]: Finished difference Result 173 states and 276 transitions. [2023-12-24 15:04:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 15:04:41,354 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 142 [2023-12-24 15:04:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:04:41,359 INFO L225 Difference]: With dead ends: 173 [2023-12-24 15:04:41,359 INFO L226 Difference]: Without dead ends: 86 [2023-12-24 15:04:41,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:04:41,363 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:04:41,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:04:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-24 15:04:41,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-12-24 15:04:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:04:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 124 transitions. [2023-12-24 15:04:41,392 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 124 transitions. Word has length 142 [2023-12-24 15:04:41,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:04:41,393 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 124 transitions. [2023-12-24 15:04:41,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 15:04:41,393 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 124 transitions. [2023-12-24 15:04:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 15:04:41,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:04:41,395 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:04:41,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 15:04:41,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:41,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:04:41,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:04:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1696479216, now seen corresponding path program 1 times [2023-12-24 15:04:41,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:04:41,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430020647] [2023-12-24 15:04:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:04:41,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:41,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:04:41,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:04:41,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 15:04:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:04:41,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 15:04:41,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:04:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:04:41,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:04:41,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:04:41,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430020647] [2023-12-24 15:04:41,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430020647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:04:41,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:04:41,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 15:04:41,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888930295] [2023-12-24 15:04:41,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:04:41,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 15:04:41,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:04:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 15:04:41,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 15:04:41,879 INFO L87 Difference]: Start difference. First operand 86 states and 124 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:41,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:04:41,980 INFO L93 Difference]: Finished difference Result 192 states and 278 transitions. [2023-12-24 15:04:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:04:41,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-24 15:04:41,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:04:41,986 INFO L225 Difference]: With dead ends: 192 [2023-12-24 15:04:41,986 INFO L226 Difference]: Without dead ends: 107 [2023-12-24 15:04:41,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:04:41,989 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 46 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:04:41,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 374 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:04:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-24 15:04:42,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 88. [2023-12-24 15:04:42,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.303030303030303) internal successors, (86), 66 states have internal predecessors, (86), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:04:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 126 transitions. [2023-12-24 15:04:42,007 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 126 transitions. Word has length 142 [2023-12-24 15:04:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:04:42,009 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 126 transitions. [2023-12-24 15:04:42,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2023-12-24 15:04:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 15:04:42,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:04:42,016 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:04:42,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 15:04:42,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:42,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:04:42,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:04:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash 420762677, now seen corresponding path program 1 times [2023-12-24 15:04:42,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:04:42,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754222453] [2023-12-24 15:04:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:04:42,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:42,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:04:42,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:04:42,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 15:04:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:04:42,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:04:42,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:04:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:04:42,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:04:42,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:04:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754222453] [2023-12-24 15:04:42,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754222453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:04:42,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:04:42,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:04:42,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361578083] [2023-12-24 15:04:42,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:04:42,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:04:42,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:04:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:04:42,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:04:42,511 INFO L87 Difference]: Start difference. First operand 88 states and 126 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:04:42,606 INFO L93 Difference]: Finished difference Result 196 states and 281 transitions. [2023-12-24 15:04:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 15:04:42,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2023-12-24 15:04:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:04:42,610 INFO L225 Difference]: With dead ends: 196 [2023-12-24 15:04:42,610 INFO L226 Difference]: Without dead ends: 109 [2023-12-24 15:04:42,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:04:42,614 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 46 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:04:42,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 457 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:04:42,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-24 15:04:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 92. [2023-12-24 15:04:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:04:42,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 130 transitions. [2023-12-24 15:04:42,624 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 130 transitions. Word has length 144 [2023-12-24 15:04:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:04:42,625 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 130 transitions. [2023-12-24 15:04:42,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:42,625 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 130 transitions. [2023-12-24 15:04:42,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 15:04:42,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:04:42,626 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:04:42,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 15:04:42,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:42,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:04:42,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:04:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash -388583949, now seen corresponding path program 1 times [2023-12-24 15:04:42,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:04:42,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473018301] [2023-12-24 15:04:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:04:42,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:42,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:04:42,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:04:42,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 15:04:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:04:43,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 15:04:43,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:04:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:04:43,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:04:43,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:04:43,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473018301] [2023-12-24 15:04:43,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473018301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:04:43,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:04:43,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:04:43,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139145457] [2023-12-24 15:04:43,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:04:43,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:04:43,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:04:43,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:04:43,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:04:43,082 INFO L87 Difference]: Start difference. First operand 92 states and 130 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:04:43,196 INFO L93 Difference]: Finished difference Result 203 states and 286 transitions. [2023-12-24 15:04:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 15:04:43,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2023-12-24 15:04:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:04:43,198 INFO L225 Difference]: With dead ends: 203 [2023-12-24 15:04:43,198 INFO L226 Difference]: Without dead ends: 112 [2023-12-24 15:04:43,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:04:43,201 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 49 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:04:43,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 565 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:04:43,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-24 15:04:43,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2023-12-24 15:04:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 72 states have internal predecessors, (92), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:04:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions. [2023-12-24 15:04:43,215 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 144 [2023-12-24 15:04:43,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:04:43,217 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 132 transitions. [2023-12-24 15:04:43,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions. [2023-12-24 15:04:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 15:04:43,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:04:43,220 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:04:43,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 15:04:43,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:43,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:04:43,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:04:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash -331325647, now seen corresponding path program 1 times [2023-12-24 15:04:43,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:04:43,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029223911] [2023-12-24 15:04:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:04:43,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:43,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:04:43,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:04:43,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 15:04:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:04:43,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:04:43,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:04:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:04:43,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:04:43,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:04:43,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029223911] [2023-12-24 15:04:43,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029223911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:04:43,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:04:43,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:04:43,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779122762] [2023-12-24 15:04:43,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:04:43,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:04:43,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:04:43,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:04:43,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:04:43,662 INFO L87 Difference]: Start difference. First operand 94 states and 132 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:04:43,807 INFO L93 Difference]: Finished difference Result 206 states and 286 transitions. [2023-12-24 15:04:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 15:04:43,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2023-12-24 15:04:43,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:04:43,809 INFO L225 Difference]: With dead ends: 206 [2023-12-24 15:04:43,809 INFO L226 Difference]: Without dead ends: 113 [2023-12-24 15:04:43,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-24 15:04:43,810 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 40 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:04:43,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 667 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:04:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-24 15:04:43,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 96. [2023-12-24 15:04:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 74 states have internal predecessors, (94), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:04:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 134 transitions. [2023-12-24 15:04:43,814 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 134 transitions. Word has length 144 [2023-12-24 15:04:43,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:04:43,814 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 134 transitions. [2023-12-24 15:04:43,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:43,814 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 134 transitions. [2023-12-24 15:04:43,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 15:04:43,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:04:43,815 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:04:43,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 15:04:44,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:44,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:04:44,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:04:44,022 INFO L85 PathProgramCache]: Analyzing trace with hash -331266065, now seen corresponding path program 1 times [2023-12-24 15:04:44,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:04:44,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857799012] [2023-12-24 15:04:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:04:44,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:44,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:04:44,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:04:44,044 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 (7)] Waiting until timeout for monitored process [2023-12-24 15:04:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:04:44,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 15:04:44,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:04:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:04:44,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:04:44,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:04:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857799012] [2023-12-24 15:04:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857799012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:04:44,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:04:44,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 15:04:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240829496] [2023-12-24 15:04:44,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:04:44,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 15:04:44,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:04:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 15:04:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:04:44,294 INFO L87 Difference]: Start difference. First operand 96 states and 134 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:04:44,513 INFO L93 Difference]: Finished difference Result 191 states and 267 transitions. [2023-12-24 15:04:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 15:04:44,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2023-12-24 15:04:44,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:04:44,515 INFO L225 Difference]: With dead ends: 191 [2023-12-24 15:04:44,515 INFO L226 Difference]: Without dead ends: 96 [2023-12-24 15:04:44,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:04:44,515 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:04:44,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:04:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-24 15:04:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-24 15:04:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 74 states have internal predecessors, (93), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:04:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 133 transitions. [2023-12-24 15:04:44,519 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 133 transitions. Word has length 144 [2023-12-24 15:04:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:04:44,519 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 133 transitions. [2023-12-24 15:04:44,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 133 transitions. [2023-12-24 15:04:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:04:44,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:04:44,521 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:04:44,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 15:04:44,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:44,727 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:04:44,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:04:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1352406572, now seen corresponding path program 1 times [2023-12-24 15:04:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:04:44,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013593931] [2023-12-24 15:04:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:04:44,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:44,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:04:44,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:04:44,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 15:04:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:04:44,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 15:04:44,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:04:44,975 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 17 treesize of output 9 [2023-12-24 15:04:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:04:45,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:04:45,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:04:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013593931] [2023-12-24 15:04:45,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013593931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:04:45,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:04:45,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 15:04:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774919975] [2023-12-24 15:04:45,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:04:45,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 15:04:45,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:04:45,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 15:04:45,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:04:45,008 INFO L87 Difference]: Start difference. First operand 96 states and 133 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:04:45,048 INFO L93 Difference]: Finished difference Result 191 states and 265 transitions. [2023-12-24 15:04:45,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 15:04:45,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2023-12-24 15:04:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:04:45,052 INFO L225 Difference]: With dead ends: 191 [2023-12-24 15:04:45,052 INFO L226 Difference]: Without dead ends: 96 [2023-12-24 15:04:45,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:04:45,053 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:04:45,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 230 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:04:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-24 15:04:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-24 15:04:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 74 states have internal predecessors, (92), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:04:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 132 transitions. [2023-12-24 15:04:45,056 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 132 transitions. Word has length 146 [2023-12-24 15:04:45,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:04:45,056 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 132 transitions. [2023-12-24 15:04:45,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 132 transitions. [2023-12-24 15:04:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:04:45,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:04:45,058 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:04:45,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 15:04:45,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:45,258 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:04:45,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:04:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1253616982, now seen corresponding path program 1 times [2023-12-24 15:04:45,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:04:45,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196149101] [2023-12-24 15:04:45,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:04:45,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:45,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:04:45,260 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:04:45,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 15:04:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:04:45,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 15:04:45,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:04:45,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:04:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:04:45,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:04:45,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:04:45,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196149101] [2023-12-24 15:04:45,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196149101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:04:45,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:04:45,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 15:04:45,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272351077] [2023-12-24 15:04:45,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:04:45,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 15:04:45,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:04:45,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 15:04:45,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 15:04:45,505 INFO L87 Difference]: Start difference. First operand 96 states and 132 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:04:45,800 INFO L93 Difference]: Finished difference Result 216 states and 297 transitions. [2023-12-24 15:04:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 15:04:45,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2023-12-24 15:04:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:04:45,801 INFO L225 Difference]: With dead ends: 216 [2023-12-24 15:04:45,801 INFO L226 Difference]: Without dead ends: 121 [2023-12-24 15:04:45,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 15:04:45,802 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 33 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:04:45,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 347 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:04:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-24 15:04:45,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 96. [2023-12-24 15:04:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 74 states have internal predecessors, (91), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 15:04:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 131 transitions. [2023-12-24 15:04:45,805 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 131 transitions. Word has length 146 [2023-12-24 15:04:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:04:45,805 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 131 transitions. [2023-12-24 15:04:45,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:04:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 131 transitions. [2023-12-24 15:04:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:04:45,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:04:45,806 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:04:45,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 15:04:46,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:46,013 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:04:46,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:04:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash -26246696, now seen corresponding path program 1 times [2023-12-24 15:04:46,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:04:46,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530936261] [2023-12-24 15:04:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:04:46,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:04:46,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:04:46,015 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:04:46,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 15:04:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:04:46,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 15:04:46,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:04:47,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:04:47,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-12-24 15:04:48,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:04:48,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:04:48,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2023-12-24 15:04:48,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:04:48,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 38 [2023-12-24 15:04:54,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-24 15:04:54,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 56 [2023-12-24 15:04:54,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:04:54,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 15:04:54,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:04:54,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 36 [2023-12-24 15:04:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 184 proven. 364 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-12-24 15:04:54,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:04:54,986 INFO L349 Elim1Store]: treesize reduction 22, result has 67.6 percent of original size [2023-12-24 15:04:54,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 104 [2023-12-24 15:04:55,111 INFO L349 Elim1Store]: treesize reduction 40, result has 50.0 percent of original size [2023-12-24 15:04:55,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2023-12-24 15:04:55,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:04:55,138 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 173 treesize of output 175 [2023-12-24 15:04:55,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 70 [2023-12-24 15:04:55,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-12-24 15:04:55,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 78 [2023-12-24 15:04:55,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-12-24 15:04:55,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:04:55,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 32 treesize of output 36 [2023-12-24 15:04:55,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:04:55,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 325 treesize of output 321 [2023-12-24 15:04:57,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:04:57,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530936261] [2023-12-24 15:04:57,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530936261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:04:57,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1043111437] [2023-12-24 15:04:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:04:57,848 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:04:57,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:04:57,893 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:04:57,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-24 15:04:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:04:58,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 15:04:58,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:04:59,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:05:00,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 15:05:00,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 15:05:02,117 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 [2023-12-24 15:05:02,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 56 [2023-12-24 15:05:02,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 15:05:02,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-12-24 15:05:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 120 proven. 364 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 15:05:02,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:05:03,854 INFO L349 Elim1Store]: treesize reduction 22, result has 67.6 percent of original size [2023-12-24 15:05:03,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 104 [2023-12-24 15:05:03,973 INFO L349 Elim1Store]: treesize reduction 40, result has 50.0 percent of original size [2023-12-24 15:05:03,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2023-12-24 15:05:03,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:03,995 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 331 treesize of output 331 [2023-12-24 15:05:04,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2023-12-24 15:05:04,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2023-12-24 15:05:04,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-12-24 15:05:04,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:04,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 32 treesize of output 36 [2023-12-24 15:05:04,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-12-24 15:05:04,204 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:04,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 126 treesize of output 126 [2023-12-24 15:05:05,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1043111437] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:05:05,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:05:05,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2023-12-24 15:05:05,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902671091] [2023-12-24 15:05:05,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:05:05,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 15:05:05,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:05,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 15:05:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=613, Unknown=2, NotChecked=0, Total=702 [2023-12-24 15:05:05,451 INFO L87 Difference]: Start difference. First operand 96 states and 131 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 19 states have internal predecessors, (99), 7 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2023-12-24 15:05:09,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:09,175 INFO L93 Difference]: Finished difference Result 343 states and 467 transitions. [2023-12-24 15:05:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 15:05:09,176 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 19 states have internal predecessors, (99), 7 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) Word has length 146 [2023-12-24 15:05:09,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:09,177 INFO L225 Difference]: With dead ends: 343 [2023-12-24 15:05:09,177 INFO L226 Difference]: Without dead ends: 248 [2023-12-24 15:05:09,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 315 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=303, Invalid=1101, Unknown=2, NotChecked=0, Total=1406 [2023-12-24 15:05:09,178 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 614 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:09,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1247 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 15:05:09,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-24 15:05:09,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 191. [2023-12-24 15:05:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 145 states have (on average 1.2137931034482758) internal successors, (176), 146 states have internal predecessors, (176), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 15:05:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 260 transitions. [2023-12-24 15:05:09,192 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 260 transitions. Word has length 146 [2023-12-24 15:05:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:09,193 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 260 transitions. [2023-12-24 15:05:09,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 19 states have internal predecessors, (99), 7 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2023-12-24 15:05:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 260 transitions. [2023-12-24 15:05:09,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:05:09,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:09,194 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:09,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:09,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:09,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:09,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:09,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:09,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1532718106, now seen corresponding path program 1 times [2023-12-24 15:05:09,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:09,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487117871] [2023-12-24 15:05:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:09,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:09,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:09,601 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:09,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 15:05:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:09,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:05:09,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:09,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:05:09,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:09,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487117871] [2023-12-24 15:05:09,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487117871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:05:09,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:05:09,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:05:09,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309220411] [2023-12-24 15:05:09,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:09,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:05:09,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:09,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:05:09,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:05:09,799 INFO L87 Difference]: Start difference. First operand 191 states and 260 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:09,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:09,861 INFO L93 Difference]: Finished difference Result 413 states and 561 transitions. [2023-12-24 15:05:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:05:09,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2023-12-24 15:05:09,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:09,863 INFO L225 Difference]: With dead ends: 413 [2023-12-24 15:05:09,863 INFO L226 Difference]: Without dead ends: 227 [2023-12-24 15:05:09,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:05:09,864 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 54 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:09,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 445 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:05:09,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-24 15:05:09,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 197. [2023-12-24 15:05:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 151 states have (on average 1.205298013245033) internal successors, (182), 152 states have internal predecessors, (182), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 15:05:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 266 transitions. [2023-12-24 15:05:09,878 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 266 transitions. Word has length 146 [2023-12-24 15:05:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:09,878 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 266 transitions. [2023-12-24 15:05:09,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 266 transitions. [2023-12-24 15:05:09,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:05:09,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:09,879 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:09,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:10,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:10,092 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:10,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:10,093 INFO L85 PathProgramCache]: Analyzing trace with hash 873320681, now seen corresponding path program 1 times [2023-12-24 15:05:10,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:10,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077135806] [2023-12-24 15:05:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:10,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:10,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:10,095 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:10,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 15:05:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:10,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 15:05:10,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:11,533 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 [2023-12-24 15:05:11,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 56 [2023-12-24 15:05:11,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:11,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 15:05:11,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2023-12-24 15:05:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:11,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:05:11,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077135806] [2023-12-24 15:05:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077135806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:05:11,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:05:11,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 15:05:11,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420376702] [2023-12-24 15:05:11,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:11,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 15:05:11,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:11,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 15:05:11,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-24 15:05:11,670 INFO L87 Difference]: Start difference. First operand 197 states and 266 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:12,655 INFO L93 Difference]: Finished difference Result 356 states and 477 transitions. [2023-12-24 15:05:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 15:05:12,656 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2023-12-24 15:05:12,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:12,657 INFO L225 Difference]: With dead ends: 356 [2023-12-24 15:05:12,657 INFO L226 Difference]: Without dead ends: 258 [2023-12-24 15:05:12,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2023-12-24 15:05:12,658 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 193 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:12,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 615 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 15:05:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-24 15:05:12,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 197. [2023-12-24 15:05:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 150 states have (on average 1.2) internal successors, (180), 151 states have internal predecessors, (180), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 15:05:12,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 264 transitions. [2023-12-24 15:05:12,675 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 264 transitions. Word has length 147 [2023-12-24 15:05:12,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:12,675 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 264 transitions. [2023-12-24 15:05:12,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:12,675 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 264 transitions. [2023-12-24 15:05:12,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 15:05:12,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:12,676 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:12,684 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 (13)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:12,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:12,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:12,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:12,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1280630248, now seen corresponding path program 1 times [2023-12-24 15:05:12,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:12,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086631865] [2023-12-24 15:05:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:12,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:12,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:12,886 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:12,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 15:05:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:13,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 15:05:13,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 18 proven. 130 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:05:13,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:05:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:13,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086631865] [2023-12-24 15:05:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086631865] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:05:13,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:05:13,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 15:05:13,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440904150] [2023-12-24 15:05:13,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:13,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:05:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:13,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:05:13,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:05:13,424 INFO L87 Difference]: Start difference. First operand 197 states and 264 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:13,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:13,497 INFO L93 Difference]: Finished difference Result 433 states and 576 transitions. [2023-12-24 15:05:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:05:13,498 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2023-12-24 15:05:13,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:13,499 INFO L225 Difference]: With dead ends: 433 [2023-12-24 15:05:13,499 INFO L226 Difference]: Without dead ends: 241 [2023-12-24 15:05:13,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:05:13,500 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 69 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:13,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 455 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:05:13,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-24 15:05:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 203. [2023-12-24 15:05:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 156 states have (on average 1.185897435897436) internal successors, (185), 157 states have internal predecessors, (185), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 15:05:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 269 transitions. [2023-12-24 15:05:13,515 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 269 transitions. Word has length 148 [2023-12-24 15:05:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:13,515 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 269 transitions. [2023-12-24 15:05:13,515 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 269 transitions. [2023-12-24 15:05:13,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 15:05:13,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:13,517 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:13,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:13,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:13,718 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:13,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:13,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1143921882, now seen corresponding path program 1 times [2023-12-24 15:05:13,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:13,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786167926] [2023-12-24 15:05:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:13,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:13,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:13,720 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:13,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 15:05:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:13,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 15:05:13,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:14,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:05:14,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:05:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:14,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:05:14,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:14,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786167926] [2023-12-24 15:05:14,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786167926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:05:14,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:05:14,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:05:14,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710821718] [2023-12-24 15:05:14,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:14,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:05:14,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:14,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:05:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:05:14,043 INFO L87 Difference]: Start difference. First operand 203 states and 269 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:14,305 INFO L93 Difference]: Finished difference Result 401 states and 531 transitions. [2023-12-24 15:05:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:05:14,306 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2023-12-24 15:05:14,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:14,307 INFO L225 Difference]: With dead ends: 401 [2023-12-24 15:05:14,307 INFO L226 Difference]: Without dead ends: 203 [2023-12-24 15:05:14,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:05:14,307 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 33 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:14,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 356 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:05:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-24 15:05:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2023-12-24 15:05:14,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 157 states have internal predecessors, (182), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 15:05:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 266 transitions. [2023-12-24 15:05:14,328 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 266 transitions. Word has length 148 [2023-12-24 15:05:14,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:14,328 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 266 transitions. [2023-12-24 15:05:14,328 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:14,329 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 266 transitions. [2023-12-24 15:05:14,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 15:05:14,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:14,329 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:14,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:14,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:14,537 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:14,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:14,537 INFO L85 PathProgramCache]: Analyzing trace with hash -313637823, now seen corresponding path program 1 times [2023-12-24 15:05:14,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:14,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282760530] [2023-12-24 15:05:14,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:14,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:14,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:14,539 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:14,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 15:05:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:14,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 15:05:14,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:14,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 46 [2023-12-24 15:05:14,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2023-12-24 15:05:14,889 INFO L349 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2023-12-24 15:05:14,889 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 1 case distinctions, treesize of input 28 treesize of output 33 [2023-12-24 15:05:14,941 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 54 treesize of output 42 [2023-12-24 15:05:14,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 15:05:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:14,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:05:14,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:14,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282760530] [2023-12-24 15:05:14,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282760530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:05:14,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:05:14,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:05:14,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219451140] [2023-12-24 15:05:14,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:14,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:05:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:05:14,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:05:14,957 INFO L87 Difference]: Start difference. First operand 203 states and 266 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:15,252 INFO L93 Difference]: Finished difference Result 212 states and 276 transitions. [2023-12-24 15:05:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:05:15,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-24 15:05:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:15,258 INFO L225 Difference]: With dead ends: 212 [2023-12-24 15:05:15,258 INFO L226 Difference]: Without dead ends: 210 [2023-12-24 15:05:15,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:05:15,258 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 34 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:15,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 379 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:05:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-24 15:05:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2023-12-24 15:05:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 160 states have (on average 1.1625) internal successors, (186), 161 states have internal predecessors, (186), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 15:05:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 270 transitions. [2023-12-24 15:05:15,276 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 270 transitions. Word has length 150 [2023-12-24 15:05:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:15,277 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 270 transitions. [2023-12-24 15:05:15,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 270 transitions. [2023-12-24 15:05:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 15:05:15,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:15,278 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:15,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:15,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:15,488 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:15,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash -313578241, now seen corresponding path program 1 times [2023-12-24 15:05:15,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:15,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799772591] [2023-12-24 15:05:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:15,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:15,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:15,490 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:15,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 15:05:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:15,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 15:05:15,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:16,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:05:16,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 15:05:16,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 15:05:17,345 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:17,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 33 treesize of output 35 [2023-12-24 15:05:18,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 29 [2023-12-24 15:05:18,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:18,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 104 [2023-12-24 15:05:18,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:18,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 39 [2023-12-24 15:05:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 120 proven. 364 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 15:05:18,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:05:18,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:18,472 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 65 [2023-12-24 15:05:18,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:18,484 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 46 treesize of output 50 [2023-12-24 15:05:18,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-12-24 15:05:18,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2023-12-24 15:05:18,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-12-24 15:05:18,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:18,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799772591] [2023-12-24 15:05:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799772591] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:05:18,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [74648956] [2023-12-24 15:05:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:18,656 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:05:18,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:05:18,656 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:05:18,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-24 15:05:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:19,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 15:05:19,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:20,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 15:05:20,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 15:05:20,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 15:05:21,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 29 [2023-12-24 15:05:22,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:22,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 84 [2023-12-24 15:05:22,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2023-12-24 15:05:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 160 proven. 364 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-12-24 15:05:22,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:05:22,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:22,173 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 65 [2023-12-24 15:05:22,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-12-24 15:05:22,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:22,199 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 46 treesize of output 50 [2023-12-24 15:05:22,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-12-24 15:05:22,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2023-12-24 15:05:22,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [74648956] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:05:22,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:05:22,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-24 15:05:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125540214] [2023-12-24 15:05:22,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:05:22,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 15:05:22,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 15:05:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:05:22,356 INFO L87 Difference]: Start difference. First operand 207 states and 270 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 15:05:23,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:23,619 INFO L93 Difference]: Finished difference Result 414 states and 539 transitions. [2023-12-24 15:05:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:05:23,619 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) Word has length 150 [2023-12-24 15:05:23,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:23,620 INFO L225 Difference]: With dead ends: 414 [2023-12-24 15:05:23,620 INFO L226 Difference]: Without dead ends: 212 [2023-12-24 15:05:23,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 345 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-12-24 15:05:23,623 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 314 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:23,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 713 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 15:05:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-24 15:05:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2023-12-24 15:05:23,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 160 states have (on average 1.15625) internal successors, (185), 161 states have internal predecessors, (185), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 15:05:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 269 transitions. [2023-12-24 15:05:23,638 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 269 transitions. Word has length 150 [2023-12-24 15:05:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:23,638 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 269 transitions. [2023-12-24 15:05:23,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 6 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-24 15:05:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 269 transitions. [2023-12-24 15:05:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 15:05:23,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:23,639 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:23,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:23,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:24,044 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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:05:24,044 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:24,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash -256319939, now seen corresponding path program 1 times [2023-12-24 15:05:24,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:24,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483882986] [2023-12-24 15:05:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:24,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:24,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:24,046 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:24,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 15:05:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:24,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 15:05:24,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:24,272 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 11 treesize of output 9 [2023-12-24 15:05:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:24,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:05:24,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:24,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483882986] [2023-12-24 15:05:24,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483882986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:05:24,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:05:24,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:05:24,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466559250] [2023-12-24 15:05:24,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:24,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:05:24,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:05:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:05:24,301 INFO L87 Difference]: Start difference. First operand 207 states and 269 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:24,399 INFO L93 Difference]: Finished difference Result 472 states and 618 transitions. [2023-12-24 15:05:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:05:24,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-24 15:05:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:24,401 INFO L225 Difference]: With dead ends: 472 [2023-12-24 15:05:24,401 INFO L226 Difference]: Without dead ends: 270 [2023-12-24 15:05:24,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:05:24,402 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 113 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:24,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 642 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:05:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-24 15:05:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 247. [2023-12-24 15:05:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 181 states have (on average 1.12707182320442) internal successors, (204), 182 states have internal predecessors, (204), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 15:05:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 324 transitions. [2023-12-24 15:05:24,426 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 324 transitions. Word has length 150 [2023-12-24 15:05:24,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:24,426 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 324 transitions. [2023-12-24 15:05:24,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:24,426 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 324 transitions. [2023-12-24 15:05:24,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 15:05:24,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:24,427 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:24,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-24 15:05:24,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:24,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:24,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1065666565, now seen corresponding path program 1 times [2023-12-24 15:05:24,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:24,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755235626] [2023-12-24 15:05:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:24,637 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:24,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 15:05:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:24,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:05:24,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:24,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:05:24,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:24,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755235626] [2023-12-24 15:05:24,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755235626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:05:24,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:05:24,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:05:24,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186133086] [2023-12-24 15:05:24,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:24,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:05:24,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:05:24,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:05:24,871 INFO L87 Difference]: Start difference. First operand 247 states and 324 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:24,939 INFO L93 Difference]: Finished difference Result 466 states and 604 transitions. [2023-12-24 15:05:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:05:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-24 15:05:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:24,940 INFO L225 Difference]: With dead ends: 466 [2023-12-24 15:05:24,940 INFO L226 Difference]: Without dead ends: 264 [2023-12-24 15:05:24,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:05:24,941 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 20 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:24,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 437 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:05:24,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-24 15:05:24,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 253. [2023-12-24 15:05:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 187 states have (on average 1.1229946524064172) internal successors, (210), 188 states have internal predecessors, (210), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 15:05:24,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 330 transitions. [2023-12-24 15:05:24,973 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 330 transitions. Word has length 150 [2023-12-24 15:05:24,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:24,973 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 330 transitions. [2023-12-24 15:05:24,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:24,973 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 330 transitions. [2023-12-24 15:05:24,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 15:05:24,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:24,974 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:24,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:25,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:25,182 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:25,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:25,183 INFO L85 PathProgramCache]: Analyzing trace with hash -308746224, now seen corresponding path program 1 times [2023-12-24 15:05:25,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:25,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159532887] [2023-12-24 15:05:25,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:25,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:25,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:25,184 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:25,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 15:05:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:25,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 15:05:25,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:25,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:05:26,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 15:05:26,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 15:05:26,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 43 [2023-12-24 15:05:27,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:27,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 43 [2023-12-24 15:05:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 184 proven. 364 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-12-24 15:05:27,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:05:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:27,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:27,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159532887] [2023-12-24 15:05:27,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159532887] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:05:27,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:05:27,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 14 [2023-12-24 15:05:27,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503318338] [2023-12-24 15:05:27,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:27,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:05:27,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:27,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:05:27,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:05:27,258 INFO L87 Difference]: Start difference. First operand 253 states and 330 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:27,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:27,955 INFO L93 Difference]: Finished difference Result 465 states and 594 transitions. [2023-12-24 15:05:27,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 15:05:27,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2023-12-24 15:05:27,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:27,956 INFO L225 Difference]: With dead ends: 465 [2023-12-24 15:05:27,957 INFO L226 Difference]: Without dead ends: 347 [2023-12-24 15:05:27,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-12-24 15:05:27,957 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 156 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:27,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 816 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 15:05:27,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-24 15:05:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 303. [2023-12-24 15:05:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 227 states have (on average 1.1233480176211454) internal successors, (255), 229 states have internal predecessors, (255), 68 states have call successors, (68), 7 states have call predecessors, (68), 7 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-24 15:05:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 391 transitions. [2023-12-24 15:05:27,985 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 391 transitions. Word has length 151 [2023-12-24 15:05:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:27,985 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 391 transitions. [2023-12-24 15:05:27,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 391 transitions. [2023-12-24 15:05:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 15:05:27,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:27,986 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:28,008 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 [2023-12-24 15:05:28,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:28,194 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:28,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:28,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2115865488, now seen corresponding path program 1 times [2023-12-24 15:05:28,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:28,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859932594] [2023-12-24 15:05:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:28,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:28,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:28,196 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:28,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 15:05:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:28,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 15:05:28,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:28,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 15:05:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 18 proven. 130 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 15:05:28,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:05:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:28,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:28,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859932594] [2023-12-24 15:05:28,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859932594] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:05:28,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:05:28,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 15:05:28,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217378155] [2023-12-24 15:05:28,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:28,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:05:28,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:28,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:05:28,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:05:28,816 INFO L87 Difference]: Start difference. First operand 303 states and 391 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:28,935 INFO L93 Difference]: Finished difference Result 473 states and 604 transitions. [2023-12-24 15:05:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:05:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2023-12-24 15:05:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:28,937 INFO L225 Difference]: With dead ends: 473 [2023-12-24 15:05:28,937 INFO L226 Difference]: Without dead ends: 305 [2023-12-24 15:05:28,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:05:28,938 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 65 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:28,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 463 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:05:28,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-24 15:05:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 303. [2023-12-24 15:05:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 227 states have (on average 1.118942731277533) internal successors, (254), 229 states have internal predecessors, (254), 68 states have call successors, (68), 7 states have call predecessors, (68), 7 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-24 15:05:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 390 transitions. [2023-12-24 15:05:28,969 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 390 transitions. Word has length 151 [2023-12-24 15:05:28,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:28,970 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 390 transitions. [2023-12-24 15:05:28,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 390 transitions. [2023-12-24 15:05:28,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 15:05:28,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:28,971 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:28,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:29,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:29,179 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:29,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1229082198, now seen corresponding path program 1 times [2023-12-24 15:05:29,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:29,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017111594] [2023-12-24 15:05:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:29,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:29,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:29,186 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:29,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 15:05:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:29,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 15:05:29,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:31,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:31,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 107 [2023-12-24 15:05:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-12-24 15:05:33,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:05:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:41,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017111594] [2023-12-24 15:05:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017111594] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:05:41,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:05:41,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-12-24 15:05:41,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480943956] [2023-12-24 15:05:41,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:41,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:05:41,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:05:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=39, Unknown=1, NotChecked=0, Total=56 [2023-12-24 15:05:41,439 INFO L87 Difference]: Start difference. First operand 303 states and 390 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:51,369 INFO L93 Difference]: Finished difference Result 752 states and 935 transitions. [2023-12-24 15:05:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:05:51,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2023-12-24 15:05:51,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:51,390 INFO L225 Difference]: With dead ends: 752 [2023-12-24 15:05:51,390 INFO L226 Difference]: Without dead ends: 494 [2023-12-24 15:05:51,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2023-12-24 15:05:51,391 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 74 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:51,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 373 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-24 15:05:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-24 15:05:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 390. [2023-12-24 15:05:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 303 states have (on average 1.099009900990099) internal successors, (333), 306 states have internal predecessors, (333), 76 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 15:05:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 485 transitions. [2023-12-24 15:05:51,426 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 485 transitions. Word has length 152 [2023-12-24 15:05:51,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:51,427 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 485 transitions. [2023-12-24 15:05:51,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:51,427 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 485 transitions. [2023-12-24 15:05:51,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 15:05:51,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:51,427 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:51,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:51,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:51,636 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:51,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:51,636 INFO L85 PathProgramCache]: Analyzing trace with hash 559920962, now seen corresponding path program 1 times [2023-12-24 15:05:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:51,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998320061] [2023-12-24 15:05:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:51,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:51,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:51,637 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:51,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 15:05:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:51,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 15:05:51,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:53,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 29 [2023-12-24 15:05:53,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:53,463 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 68 treesize of output 64 [2023-12-24 15:05:53,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:05:53,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 36 [2023-12-24 15:05:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:53,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:05:53,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:53,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998320061] [2023-12-24 15:05:53,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998320061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:05:53,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:05:53,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:05:53,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052317456] [2023-12-24 15:05:53,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:53,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:05:53,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:53,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:05:53,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:05:53,500 INFO L87 Difference]: Start difference. First operand 390 states and 485 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:54,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:54,228 INFO L93 Difference]: Finished difference Result 592 states and 733 transitions. [2023-12-24 15:05:54,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:05:54,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-24 15:05:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:54,230 INFO L225 Difference]: With dead ends: 592 [2023-12-24 15:05:54,230 INFO L226 Difference]: Without dead ends: 390 [2023-12-24 15:05:54,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-24 15:05:54,231 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 78 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:54,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 340 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 15:05:54,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-24 15:05:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 251. [2023-12-24 15:05:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 196 states have (on average 1.1071428571428572) internal successors, (217), 198 states have internal predecessors, (217), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 15:05:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 313 transitions. [2023-12-24 15:05:54,264 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 313 transitions. Word has length 153 [2023-12-24 15:05:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:54,265 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 313 transitions. [2023-12-24 15:05:54,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 313 transitions. [2023-12-24 15:05:54,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 15:05:54,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:54,266 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:54,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:54,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:54,474 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:54,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:54,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1378220619, now seen corresponding path program 1 times [2023-12-24 15:05:54,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:54,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034448155] [2023-12-24 15:05:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:54,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:54,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:54,476 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:54,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 15:05:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:54,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 15:05:54,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:54,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:05:54,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:05:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:05:55,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:05:55,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:05:55,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034448155] [2023-12-24 15:05:55,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034448155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:05:55,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:05:55,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 15:05:55,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417123773] [2023-12-24 15:05:55,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:05:55,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 15:05:55,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:05:55,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 15:05:55,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 15:05:55,399 INFO L87 Difference]: Start difference. First operand 251 states and 313 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:05:55,917 INFO L93 Difference]: Finished difference Result 585 states and 711 transitions. [2023-12-24 15:05:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 15:05:55,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-24 15:05:55,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:05:55,921 INFO L225 Difference]: With dead ends: 585 [2023-12-24 15:05:55,921 INFO L226 Difference]: Without dead ends: 383 [2023-12-24 15:05:55,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:05:55,921 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 70 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:05:55,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 287 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 15:05:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-24 15:05:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 285. [2023-12-24 15:05:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 230 states have (on average 1.1217391304347826) internal successors, (258), 231 states have internal predecessors, (258), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 15:05:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 354 transitions. [2023-12-24 15:05:55,953 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 354 transitions. Word has length 153 [2023-12-24 15:05:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:05:55,955 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 354 transitions. [2023-12-24 15:05:55,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:05:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 354 transitions. [2023-12-24 15:05:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 15:05:55,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:05:55,955 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:05:55,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 15:05:56,163 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 [2023-12-24 15:05:56,163 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:05:56,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:05:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1636882999, now seen corresponding path program 1 times [2023-12-24 15:05:56,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:05:56,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886695448] [2023-12-24 15:05:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:05:56,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:05:56,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:05:56,165 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:05:56,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 15:05:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:05:56,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 15:05:56,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:05:57,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:05:58,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:05:59,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2023-12-24 15:06:06,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 50 [2023-12-24 15:06:06,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:06:06,961 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 28 treesize of output 33 [2023-12-24 15:06:06,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 74 [2023-12-24 15:06:07,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:06:07,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 50 [2023-12-24 15:06:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 336 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-24 15:06:07,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:06:10,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:06:10,762 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 126 treesize of output 114 [2023-12-24 15:06:30,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:06:30,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886695448] [2023-12-24 15:06:30,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886695448] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:06:30,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1406191801] [2023-12-24 15:06:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:06:30,763 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:06:30,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:06:30,764 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:06:30,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-24 15:06:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:06:31,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 15:06:31,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:06:31,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:06:32,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:06:34,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 15:06:36,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2023-12-24 15:06:46,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 65 [2023-12-24 15:06:47,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:06:47,053 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 28 treesize of output 33 [2023-12-24 15:06:47,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 84 [2023-12-24 15:06:47,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 60 [2023-12-24 15:06:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 384 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-12-24 15:06:48,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:06:48,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:06:48,551 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 126 treesize of output 114 [2023-12-24 15:06:55,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1406191801] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:06:55,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:06:55,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 39 [2023-12-24 15:06:55,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284512458] [2023-12-24 15:06:55,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:06:55,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 15:06:55,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:06:55,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 15:06:55,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1999, Unknown=9, NotChecked=0, Total=2256 [2023-12-24 15:06:55,375 INFO L87 Difference]: Start difference. First operand 285 states and 354 transitions. Second operand has 40 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 11 states have call successors, (40), 9 states have call predecessors, (40), 11 states have return successors, (40), 8 states have call predecessors, (40), 11 states have call successors, (40) [2023-12-24 15:07:40,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:07:40,943 INFO L93 Difference]: Finished difference Result 942 states and 1096 transitions. [2023-12-24 15:07:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-24 15:07:40,945 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 11 states have call successors, (40), 9 states have call predecessors, (40), 11 states have return successors, (40), 8 states have call predecessors, (40), 11 states have call successors, (40) Word has length 153 [2023-12-24 15:07:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:07:40,947 INFO L225 Difference]: With dead ends: 942 [2023-12-24 15:07:40,947 INFO L226 Difference]: Without dead ends: 738 [2023-12-24 15:07:40,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3277 ImplicationChecksByTransitivity, 63.0s TimeCoverageRelationStatistics Valid=1710, Invalid=9623, Unknown=9, NotChecked=0, Total=11342 [2023-12-24 15:07:40,949 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1398 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:07:40,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 2480 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2023-12-24 15:07:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-12-24 15:07:41,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 499. [2023-12-24 15:07:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 406 states have (on average 1.0985221674876848) internal successors, (446), 407 states have internal predecessors, (446), 68 states have call successors, (68), 24 states have call predecessors, (68), 24 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-24 15:07:41,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 582 transitions. [2023-12-24 15:07:41,030 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 582 transitions. Word has length 153 [2023-12-24 15:07:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:07:41,030 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 582 transitions. [2023-12-24 15:07:41,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 11 states have call successors, (40), 9 states have call predecessors, (40), 11 states have return successors, (40), 8 states have call predecessors, (40), 11 states have call successors, (40) [2023-12-24 15:07:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 582 transitions. [2023-12-24 15:07:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 15:07:41,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:07:41,031 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:07:41,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2023-12-24 15:07:41,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 15:07:41,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:07:41,444 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:07:41,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:07:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash 988748987, now seen corresponding path program 1 times [2023-12-24 15:07:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:07:41,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161476884] [2023-12-24 15:07:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:07:41,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:07:41,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:07:41,446 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:07:41,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 15:07:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:07:41,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-24 15:07:41,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:07:45,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:07:45,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 15:07:46,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:07:47,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:07:53,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:07:55,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2023-12-24 15:08:00,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 67 [2023-12-24 15:08:02,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:08:02,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 44 [2023-12-24 15:08:02,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:08:02,925 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 133 treesize of output 83 [2023-12-24 15:08:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 24 proven. 316 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 15:08:03,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:08:12,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:08:12,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161476884] [2023-12-24 15:08:12,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161476884] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:08:12,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [654602211] [2023-12-24 15:08:12,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:08:12,003 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:08:12,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:08:12,004 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:08:12,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-24 15:08:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:08:12,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-24 15:08:12,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:08:16,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 15:08:17,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 15:08:18,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 15:08:22,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:08:26,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2023-12-24 15:08:32,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 67 [2023-12-24 15:08:35,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 58 [2023-12-24 15:08:35,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 91 [2023-12-24 15:08:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 288 proven. 316 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-24 15:08:35,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:08:38,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [654602211] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:08:38,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:08:38,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 36] total 66 [2023-12-24 15:08:38,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784362620] [2023-12-24 15:08:38,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:08:38,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-24 15:08:38,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:08:38,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-24 15:08:38,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1071, Invalid=5734, Unknown=1, NotChecked=0, Total=6806 [2023-12-24 15:08:38,562 INFO L87 Difference]: Start difference. First operand 499 states and 582 transitions. Second operand has 67 states, 57 states have (on average 2.456140350877193) internal successors, (140), 50 states have internal predecessors, (140), 14 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-24 15:09:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:09:04,091 INFO L93 Difference]: Finished difference Result 1204 states and 1371 transitions. [2023-12-24 15:09:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-24 15:09:04,093 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 57 states have (on average 2.456140350877193) internal successors, (140), 50 states have internal predecessors, (140), 14 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) Word has length 154 [2023-12-24 15:09:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:09:04,096 INFO L225 Difference]: With dead ends: 1204 [2023-12-24 15:09:04,096 INFO L226 Difference]: Without dead ends: 958 [2023-12-24 15:09:04,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5668 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=3013, Invalid=14016, Unknown=1, NotChecked=0, Total=17030 [2023-12-24 15:09:04,100 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 760 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 4429 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 4727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 4429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:09:04,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 2354 Invalid, 4727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 4429 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-12-24 15:09:04,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-12-24 15:09:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 833. [2023-12-24 15:09:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 661 states have (on average 1.0771558245083208) internal successors, (712), 663 states have internal predecessors, (712), 116 states have call successors, (116), 55 states have call predecessors, (116), 55 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-24 15:09:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 944 transitions. [2023-12-24 15:09:04,265 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 944 transitions. Word has length 154 [2023-12-24 15:09:04,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:09:04,265 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 944 transitions. [2023-12-24 15:09:04,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 57 states have (on average 2.456140350877193) internal successors, (140), 50 states have internal predecessors, (140), 14 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-24 15:09:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 944 transitions. [2023-12-24 15:09:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 15:09:04,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:09:04,266 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:09:04,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-12-24 15:09:04,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-24 15:09:04,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:09:04,674 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:09:04,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:09:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1246914425, now seen corresponding path program 1 times [2023-12-24 15:09:04,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:09:04,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816564481] [2023-12-24 15:09:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:09:04,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:09:04,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:09:04,676 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:09:04,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 15:09:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:09:05,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 15:09:05,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:09:07,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:09:08,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2023-12-24 15:09:10,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 20 [2023-12-24 15:09:10,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 52 [2023-12-24 15:09:10,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:09:10,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 42 [2023-12-24 15:09:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 204 proven. 76 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 15:09:11,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:09:11,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2023-12-24 15:09:15,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:09:15,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816564481] [2023-12-24 15:09:15,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816564481] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:09:15,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1222510137] [2023-12-24 15:09:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:09:15,831 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:09:15,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:09:15,832 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:09:15,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-12-24 15:09:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:09:16,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 15:09:16,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:09:21,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:09:23,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 15:09:26,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 63 [2023-12-24 15:09:26,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-12-24 15:09:27,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 45 [2023-12-24 15:09:27,296 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 203 proven. 76 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-24 15:09:27,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:09:36,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:09:36,762 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 79 treesize of output 75 [2023-12-24 15:09:54,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1222510137] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:09:54,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:09:54,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20] total 42 [2023-12-24 15:09:54,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210887954] [2023-12-24 15:09:54,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:09:54,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-24 15:09:54,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:09:54,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-24 15:09:54,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2363, Unknown=6, NotChecked=0, Total=2756 [2023-12-24 15:09:54,014 INFO L87 Difference]: Start difference. First operand 833 states and 944 transitions. Second operand has 43 states, 36 states have (on average 3.5) internal successors, (126), 34 states have internal predecessors, (126), 10 states have call successors, (40), 9 states have call predecessors, (40), 10 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-24 15:10:09,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:10:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:10:14,411 INFO L93 Difference]: Finished difference Result 1638 states and 1842 transitions. [2023-12-24 15:10:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 15:10:14,412 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 36 states have (on average 3.5) internal successors, (126), 34 states have internal predecessors, (126), 10 states have call successors, (40), 9 states have call predecessors, (40), 10 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 154 [2023-12-24 15:10:14,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:10:14,415 INFO L225 Difference]: With dead ends: 1638 [2023-12-24 15:10:14,415 INFO L226 Difference]: Without dead ends: 1199 [2023-12-24 15:10:14,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1985 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=1273, Invalid=5861, Unknown=6, NotChecked=0, Total=7140 [2023-12-24 15:10:14,417 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 752 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 362 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:10:14,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 2243 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2705 Invalid, 1 Unknown, 0 Unchecked, 13.7s Time] [2023-12-24 15:10:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-12-24 15:10:14,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1022. [2023-12-24 15:10:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 830 states have (on average 1.072289156626506) internal successors, (890), 835 states have internal predecessors, (890), 122 states have call successors, (122), 69 states have call predecessors, (122), 69 states have return successors, (122), 117 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:10:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1134 transitions. [2023-12-24 15:10:14,640 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1134 transitions. Word has length 154 [2023-12-24 15:10:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:10:14,640 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1134 transitions. [2023-12-24 15:10:14,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 36 states have (on average 3.5) internal successors, (126), 34 states have internal predecessors, (126), 10 states have call successors, (40), 9 states have call predecessors, (40), 10 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-24 15:10:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1134 transitions. [2023-12-24 15:10:14,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 15:10:14,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:10:14,641 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:10:14,649 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 [2023-12-24 15:10:14,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2023-12-24 15:10:15,049 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=3,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:10:15,050 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:10:15,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:10:15,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1920014915, now seen corresponding path program 1 times [2023-12-24 15:10:15,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:10:15,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938703991] [2023-12-24 15:10:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:10:15,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:10:15,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:10:15,051 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:10:15,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 15:10:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:10:15,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 15:10:15,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:10:18,106 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 8 treesize of output 1 [2023-12-24 15:10:18,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-12-24 15:10:20,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-12-24 15:10:20,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 49 [2023-12-24 15:10:20,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:10:20,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 39 [2023-12-24 15:10:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 188 proven. 76 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 15:10:20,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:10:21,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2023-12-24 15:10:25,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:10:25,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938703991] [2023-12-24 15:10:25,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938703991] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:10:25,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [592043725] [2023-12-24 15:10:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:10:25,405 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:10:25,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:10:25,406 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:10:25,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-12-24 15:10:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:10:26,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 15:10:26,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:10:34,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 15:10:34,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 52 [2023-12-24 15:10:35,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 42 [2023-12-24 15:10:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 76 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 15:10:35,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:10:47,995 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 15:10:47,995 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 80 treesize of output 72 [2023-12-24 15:10:59,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [592043725] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:10:59,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:10:59,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 37 [2023-12-24 15:10:59,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708763095] [2023-12-24 15:10:59,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:10:59,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-24 15:10:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:10:59,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-24 15:10:59,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1947, Unknown=3, NotChecked=0, Total=2256 [2023-12-24 15:10:59,202 INFO L87 Difference]: Start difference. First operand 1022 states and 1134 transitions. Second operand has 38 states, 32 states have (on average 3.78125) internal successors, (121), 31 states have internal predecessors, (121), 8 states have call successors, (40), 6 states have call predecessors, (40), 8 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2023-12-24 15:11:05,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:11:11,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:11:14,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:11:16,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:11:18,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:11:30,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:11:52,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:11:57,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:11:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:11:58,019 INFO L93 Difference]: Finished difference Result 1842 states and 2043 transitions. [2023-12-24 15:11:58,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-24 15:11:58,021 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 32 states have (on average 3.78125) internal successors, (121), 31 states have internal predecessors, (121), 8 states have call successors, (40), 6 states have call predecessors, (40), 8 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) Word has length 154 [2023-12-24 15:11:58,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:11:58,024 INFO L225 Difference]: With dead ends: 1842 [2023-12-24 15:11:58,024 INFO L226 Difference]: Without dead ends: 1244 [2023-12-24 15:11:58,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=1203, Invalid=5600, Unknown=3, NotChecked=0, Total=6806 [2023-12-24 15:11:58,026 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 633 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 454 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:11:58,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1810 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 2394 Invalid, 3 Unknown, 0 Unchecked, 32.1s Time] [2023-12-24 15:11:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2023-12-24 15:11:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1180. [2023-12-24 15:11:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 935 states have (on average 1.0620320855614973) internal successors, (993), 941 states have internal predecessors, (993), 158 states have call successors, (158), 86 states have call predecessors, (158), 86 states have return successors, (158), 152 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-24 15:11:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1309 transitions. [2023-12-24 15:11:58,304 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1309 transitions. Word has length 154 [2023-12-24 15:11:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:11:58,304 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1309 transitions. [2023-12-24 15:11:58,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 32 states have (on average 3.78125) internal successors, (121), 31 states have internal predecessors, (121), 8 states have call successors, (40), 6 states have call predecessors, (40), 8 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2023-12-24 15:11:58,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1309 transitions. [2023-12-24 15:11:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 15:11:58,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:58,305 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:11:58,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2023-12-24 15:11:58,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 15:11:58,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:58,725 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:58,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:58,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1661849477, now seen corresponding path program 1 times [2023-12-24 15:11:58,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:58,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767966939] [2023-12-24 15:11:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:58,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:58,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:58,727 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:11:58,727 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 (34)] Waiting until timeout for monitored process [2023-12-24 15:11:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:59,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 15:11:59,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:12:04,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 45 [2023-12-24 15:12:05,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:12:05,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 43 [2023-12-24 15:12:05,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:12:05,218 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 111 treesize of output 87 [2023-12-24 15:12:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 322 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2023-12-24 15:12:05,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:12:07,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:12:07,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767966939] [2023-12-24 15:12:07,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767966939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:12:07,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [84337956] [2023-12-24 15:12:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:12:07,143 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:12:07,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:12:07,144 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:12:07,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-12-24 15:12:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:12:07,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-24 15:12:07,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:12:11,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 15:12:12,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 15:12:13,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 15:12:20,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 45 [2023-12-24 15:12:22,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 43 [2023-12-24 15:12:22,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 87 [2023-12-24 15:12:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 276 proven. 322 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-24 15:12:22,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:12:27,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:12:27,069 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 168 treesize of output 153 [2023-12-24 15:12:27,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 128 [2023-12-24 15:12:27,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 128 [2023-12-24 15:12:27,634 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 144 treesize of output 128 [2023-12-24 15:12:27,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 128 [2023-12-24 15:12:27,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 128 [2023-12-24 15:12:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [84337956] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:12:28,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:12:28,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 46 [2023-12-24 15:12:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470334240] [2023-12-24 15:12:28,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:12:28,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-24 15:12:28,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:12:28,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-24 15:12:28,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=718, Invalid=3314, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 15:12:28,084 INFO L87 Difference]: Start difference. First operand 1180 states and 1309 transitions. Second operand has 47 states, 41 states have (on average 3.268292682926829) internal successors, (134), 40 states have internal predecessors, (134), 12 states have call successors, (40), 10 states have call predecessors, (40), 12 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2023-12-24 15:12:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:12:54,111 INFO L93 Difference]: Finished difference Result 2444 states and 2704 transitions. [2023-12-24 15:12:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-24 15:12:54,112 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 41 states have (on average 3.268292682926829) internal successors, (134), 40 states have internal predecessors, (134), 12 states have call successors, (40), 10 states have call predecessors, (40), 12 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) Word has length 154 [2023-12-24 15:12:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:12:54,116 INFO L225 Difference]: With dead ends: 2444 [2023-12-24 15:12:54,116 INFO L226 Difference]: Without dead ends: 1688 [2023-12-24 15:12:54,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 331 SyntacticMatches, 5 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6289 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=3152, Invalid=15480, Unknown=0, NotChecked=0, Total=18632 [2023-12-24 15:12:54,119 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 899 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 4400 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 4755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 4400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:12:54,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 2270 Invalid, 4755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 4400 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-12-24 15:12:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2023-12-24 15:12:54,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1521. [2023-12-24 15:12:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1225 states have (on average 1.066938775510204) internal successors, (1307), 1234 states have internal predecessors, (1307), 191 states have call successors, (191), 104 states have call predecessors, (191), 104 states have return successors, (191), 182 states have call predecessors, (191), 191 states have call successors, (191) [2023-12-24 15:12:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1689 transitions. [2023-12-24 15:12:54,473 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1689 transitions. Word has length 154 [2023-12-24 15:12:54,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:12:54,473 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 1689 transitions. [2023-12-24 15:12:54,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 41 states have (on average 3.268292682926829) internal successors, (134), 40 states have internal predecessors, (134), 12 states have call successors, (40), 10 states have call predecessors, (40), 12 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2023-12-24 15:12:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1689 transitions. [2023-12-24 15:12:54,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 15:12:54,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:12:54,474 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:12:54,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 15:12:54,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2023-12-24 15:12:54,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:12:54,884 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:12:54,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:12:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash 454360433, now seen corresponding path program 1 times [2023-12-24 15:12:54,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:12:54,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249017945] [2023-12-24 15:12:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:12:54,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:12:54,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:12:54,885 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:12:54,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 15:12:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:12:55,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:12:55,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:12:55,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:12:55,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:12:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:12:55,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:12:55,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:12:55,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249017945] [2023-12-24 15:12:55,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249017945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:12:55,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:12:55,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 15:12:55,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788790065] [2023-12-24 15:12:55,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:12:55,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:12:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:12:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:12:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:12:55,855 INFO L87 Difference]: Start difference. First operand 1521 states and 1689 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:12:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:12:56,863 INFO L93 Difference]: Finished difference Result 2654 states and 2938 transitions. [2023-12-24 15:12:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:12:56,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2023-12-24 15:12:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:12:56,867 INFO L225 Difference]: With dead ends: 2654 [2023-12-24 15:12:56,867 INFO L226 Difference]: Without dead ends: 1745 [2023-12-24 15:12:56,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:12:56,869 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 106 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 15:12:56,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 346 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 15:12:56,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2023-12-24 15:12:57,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1521. [2023-12-24 15:12:57,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1225 states have (on average 1.0661224489795917) internal successors, (1306), 1234 states have internal predecessors, (1306), 191 states have call successors, (191), 104 states have call predecessors, (191), 104 states have return successors, (191), 182 states have call predecessors, (191), 191 states have call successors, (191) [2023-12-24 15:12:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1688 transitions. [2023-12-24 15:12:57,235 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1688 transitions. Word has length 154 [2023-12-24 15:12:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:12:57,235 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 1688 transitions. [2023-12-24 15:12:57,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:12:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1688 transitions. [2023-12-24 15:12:57,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 15:12:57,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:12:57,236 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:12:57,242 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 [2023-12-24 15:12:57,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:12:57,439 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:12:57,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:12:57,440 INFO L85 PathProgramCache]: Analyzing trace with hash 476992687, now seen corresponding path program 1 times [2023-12-24 15:12:57,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:12:57,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198455906] [2023-12-24 15:12:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:12:57,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:12:57,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:12:57,441 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:12:57,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-24 15:12:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:12:57,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 15:12:57,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:12:58,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:12:59,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 15:12:59,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 15:13:00,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-12-24 15:13:00,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:13:00,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 39 [2023-12-24 15:13:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 184 proven. 364 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-12-24 15:13:01,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:13:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 15:13:01,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:13:01,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198455906] [2023-12-24 15:13:01,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198455906] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:13:01,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:13:01,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 16 [2023-12-24 15:13:01,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191608653] [2023-12-24 15:13:01,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:13:01,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 15:13:01,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:13:01,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 15:13:01,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-24 15:13:01,239 INFO L87 Difference]: Start difference. First operand 1521 states and 1688 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:13:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:13:02,868 INFO L93 Difference]: Finished difference Result 2577 states and 2847 transitions. [2023-12-24 15:13:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 15:13:02,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2023-12-24 15:13:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:13:02,872 INFO L225 Difference]: With dead ends: 2577 [2023-12-24 15:13:02,872 INFO L226 Difference]: Without dead ends: 1740 [2023-12-24 15:13:02,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2023-12-24 15:13:02,874 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 153 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:13:02,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 911 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 15:13:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2023-12-24 15:13:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1443. [2023-12-24 15:13:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1147 states have (on average 1.059285091543156) internal successors, (1215), 1156 states have internal predecessors, (1215), 191 states have call successors, (191), 104 states have call predecessors, (191), 104 states have return successors, (191), 182 states have call predecessors, (191), 191 states have call successors, (191) [2023-12-24 15:13:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1597 transitions. [2023-12-24 15:13:03,244 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1597 transitions. Word has length 154 [2023-12-24 15:13:03,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:13:03,245 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 1597 transitions. [2023-12-24 15:13:03,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 15:13:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1597 transitions. [2023-12-24 15:13:03,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 15:13:03,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:13:03,246 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:13:03,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-24 15:13:03,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:13:03,458 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:13:03,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:13:03,458 INFO L85 PathProgramCache]: Analyzing trace with hash 85515454, now seen corresponding path program 1 times [2023-12-24 15:13:03,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:13:03,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980652905] [2023-12-24 15:13:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:13:03,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:13:03,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:13:03,459 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:13:03,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-24 15:13:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:13:03,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 15:13:03,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:13:07,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:13:08,359 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 8 treesize of output 1 [2023-12-24 15:13:08,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:13:09,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:13:09,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2023-12-24 15:13:10,198 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:13:10,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2023-12-24 15:13:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 404 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-12-24 15:13:10,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:13:11,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:13:11,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980652905] [2023-12-24 15:13:11,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980652905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:13:11,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1087616243] [2023-12-24 15:13:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:13:11,785 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:13:11,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:13:11,786 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:13:11,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-12-24 15:13:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:13:12,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-24 15:13:12,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:13:21,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:13:24,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2023-12-24 15:13:28,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-12-24 15:13:29,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 62 [2023-12-24 15:13:31,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 53 [2023-12-24 15:13:32,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 84 [2023-12-24 15:13:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 24 proven. 316 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 15:13:32,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:13:39,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1087616243] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:13:39,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:13:39,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 35] total 43 [2023-12-24 15:13:39,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091522629] [2023-12-24 15:13:39,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:13:39,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 15:13:39,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:13:39,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 15:13:39,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=777, Invalid=3255, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 15:13:39,240 INFO L87 Difference]: Start difference. First operand 1443 states and 1597 transitions. Second operand has 44 states, 39 states have (on average 3.358974358974359) internal successors, (131), 35 states have internal predecessors, (131), 9 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2023-12-24 15:14:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:14:13,339 INFO L93 Difference]: Finished difference Result 2374 states and 2611 transitions. [2023-12-24 15:14:13,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-24 15:14:13,340 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 3.358974358974359) internal successors, (131), 35 states have internal predecessors, (131), 9 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 157 [2023-12-24 15:14:13,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:14:13,344 INFO L225 Difference]: With dead ends: 2374 [2023-12-24 15:14:13,344 INFO L226 Difference]: Without dead ends: 1821 [2023-12-24 15:14:13,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4454 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=3358, Invalid=13154, Unknown=0, NotChecked=0, Total=16512 [2023-12-24 15:14:13,346 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 582 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 4130 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 4348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 4130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:14:13,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 2115 Invalid, 4348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 4130 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-12-24 15:14:13,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2023-12-24 15:14:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1234. [2023-12-24 15:14:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 972 states have (on average 1.059670781893004) internal successors, (1030), 978 states have internal predecessors, (1030), 168 states have call successors, (168), 93 states have call predecessors, (168), 93 states have return successors, (168), 162 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-24 15:14:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1366 transitions. [2023-12-24 15:14:13,718 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1366 transitions. Word has length 157 [2023-12-24 15:14:13,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:14:13,718 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 1366 transitions. [2023-12-24 15:14:13,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 3.358974358974359) internal successors, (131), 35 states have internal predecessors, (131), 9 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2023-12-24 15:14:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1366 transitions. [2023-12-24 15:14:13,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-12-24 15:14:13,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:14:13,727 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:14:13,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-24 15:14:13,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2023-12-24 15:14:14,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:14:14,137 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:14:14,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:14:14,137 INFO L85 PathProgramCache]: Analyzing trace with hash -958986117, now seen corresponding path program 1 times [2023-12-24 15:14:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:14:14,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763466834] [2023-12-24 15:14:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:14,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:14,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:14:14,139 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:14:14,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-24 15:14:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:16,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-24 15:14:16,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:14:31,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 15:14:32,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 45 [2023-12-24 15:14:33,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:14:33,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 43 [2023-12-24 15:14:34,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:14:34,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 75 [2023-12-24 15:14:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3191 backedges. 18 proven. 756 refuted. 0 times theorem prover too weak. 2417 trivial. 0 not checked. [2023-12-24 15:14:34,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:14:36,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:14:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763466834] [2023-12-24 15:14:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763466834] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:14:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1089692678] [2023-12-24 15:14:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:36,286 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:14:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:14:36,287 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:14:36,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-12-24 15:14:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:37,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 15:14:37,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:01,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-12-24 15:15:02,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 45 [2023-12-24 15:15:03,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 43 [2023-12-24 15:15:04,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 80 [2023-12-24 15:15:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3191 backedges. 18 proven. 756 refuted. 0 times theorem prover too weak. 2417 trivial. 0 not checked. [2023-12-24 15:15:04,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:15:09,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:15:09,608 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 248 treesize of output 233 [2023-12-24 15:15:09,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 208 [2023-12-24 15:15:10,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 208 [2023-12-24 15:15:10,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 208 [2023-12-24 15:15:10,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 208 [2023-12-24 15:15:10,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 208 [2023-12-24 15:15:11,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1089692678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:15:11,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:15:11,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45 [2023-12-24 15:15:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343606736] [2023-12-24 15:15:11,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:15:11,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-24 15:15:11,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:15:11,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-24 15:15:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=713, Invalid=3319, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 15:15:11,067 INFO L87 Difference]: Start difference. First operand 1234 states and 1366 transitions. Second operand has 46 states, 40 states have (on average 5.2) internal successors, (208), 39 states have internal predecessors, (208), 10 states have call successors, (50), 8 states have call predecessors, (50), 10 states have return successors, (50), 8 states have call predecessors, (50), 10 states have call successors, (50) [2023-12-24 15:15:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:15:37,243 INFO L93 Difference]: Finished difference Result 1918 states and 2104 transitions. [2023-12-24 15:15:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-24 15:15:37,244 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 40 states have (on average 5.2) internal successors, (208), 39 states have internal predecessors, (208), 10 states have call successors, (50), 8 states have call predecessors, (50), 10 states have return successors, (50), 8 states have call predecessors, (50), 10 states have call successors, (50) Word has length 309 [2023-12-24 15:15:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:15:37,245 INFO L225 Difference]: With dead ends: 1918 [2023-12-24 15:15:37,245 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 15:15:37,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 647 SyntacticMatches, 5 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4316 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=2783, Invalid=11259, Unknown=0, NotChecked=0, Total=14042 [2023-12-24 15:15:37,247 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 440 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 4181 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 4381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 4181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:15:37,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 2049 Invalid, 4381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 4181 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-12-24 15:15:37,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 15:15:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 15:15:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 15:15:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 15:15:37,248 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 309 [2023-12-24 15:15:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:15:37,248 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 15:15:37,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 40 states have (on average 5.2) internal successors, (208), 39 states have internal predecessors, (208), 10 states have call successors, (50), 8 states have call predecessors, (50), 10 states have return successors, (50), 8 states have call predecessors, (50), 10 states have call successors, (50) [2023-12-24 15:15:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 15:15:37,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 15:15:37,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 15:15:37,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2023-12-24 15:15:37,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-12-24 15:15:37,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:37,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 15:16:11,206 WARN L293 SmtUtils]: Spent 13.94s on a formula simplification. DAG size of input: 339 DAG size of output: 313 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:16:22,388 WARN L293 SmtUtils]: Spent 8.67s on a formula simplification. DAG size of input: 268 DAG size of output: 268 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:16:30,819 WARN L293 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 315 DAG size of output: 271 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:16:47,977 WARN L293 SmtUtils]: Spent 13.75s on a formula simplification. DAG size of input: 339 DAG size of output: 315 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:17:01,941 WARN L293 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 281 DAG size of output: 263 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:17:09,937 WARN L293 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 281 DAG size of output: 243 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:17:15,579 WARN L293 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 281 DAG size of output: 242 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:17:37,018 WARN L293 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 281 DAG size of output: 265 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:17:55,030 WARN L293 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 315 DAG size of output: 273 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:18:10,720 WARN L293 SmtUtils]: Spent 13.02s on a formula simplification. DAG size of input: 339 DAG size of output: 293 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:18:23,044 WARN L293 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 268 DAG size of output: 266 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 15:18:55,553 WARN L293 SmtUtils]: Spent 12.92s on a formula simplification. DAG size of input: 339 DAG size of output: 292 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 15:18:59,558 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∧-19-8-27-3-12-2-18-4-20-4-20-2-21-3-21-3-8-1 term,while PolyPacSimplificationTermWalker was simplifying 21 xjuncts wrt. a ∧-68-27-4-21-4-21-4-21-4-21-3-21-3-21-3-8-1 context. [2023-12-24 15:18:59,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 15:18:59,564 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 15:18:59,565 INFO L158 Benchmark]: Toolchain (without parser) took 859859.42ms. Allocated memory was 224.4MB in the beginning and 798.0MB in the end (delta: 573.6MB). Free memory was 170.4MB in the beginning and 308.3MB in the end (delta: -137.9MB). Peak memory consumption was 436.8MB. Max. memory is 8.0GB. [2023-12-24 15:18:59,565 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 224.4MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 15:18:59,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.91ms. Allocated memory is still 224.4MB. Free memory was 170.2MB in the beginning and 153.8MB in the end (delta: 16.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 15:18:59,566 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.07ms. Allocated memory is still 224.4MB. Free memory was 153.8MB in the beginning and 150.5MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 15:18:59,566 INFO L158 Benchmark]: Boogie Preprocessor took 102.72ms. Allocated memory is still 224.4MB. Free memory was 150.2MB in the beginning and 192.8MB in the end (delta: -42.6MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. [2023-12-24 15:18:59,566 INFO L158 Benchmark]: RCFGBuilder took 751.46ms. Allocated memory is still 224.4MB. Free memory was 192.8MB in the beginning and 151.9MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-24 15:18:59,566 INFO L158 Benchmark]: TraceAbstraction took 858702.90ms. Allocated memory was 224.4MB in the beginning and 798.0MB in the end (delta: 573.6MB). Free memory was 151.4MB in the beginning and 308.3MB in the end (delta: -156.9MB). Peak memory consumption was 416.7MB. Max. memory is 8.0GB. [2023-12-24 15:18:59,567 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-24 15:18:59,573 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 Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 224.4MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.91ms. Allocated memory is still 224.4MB. Free memory was 170.2MB in the beginning and 153.8MB in the end (delta: 16.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.07ms. Allocated memory is still 224.4MB. Free memory was 153.8MB in the beginning and 150.5MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 102.72ms. Allocated memory is still 224.4MB. Free memory was 150.2MB in the beginning and 192.8MB in the end (delta: -42.6MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. * RCFGBuilder took 751.46ms. Allocated memory is still 224.4MB. Free memory was 192.8MB in the beginning and 151.9MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * TraceAbstraction took 858702.90ms. Allocated memory was 224.4MB in the beginning and 798.0MB in the end (delta: 573.6MB). Free memory was 151.4MB in the beginning and 308.3MB in the end (delta: -156.9MB). Peak memory consumption was 416.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-7-61-2-40-2-20-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-56-61-2-40-2-20-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown