/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/recursified_loop-simple/recursified_nested_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:41:56,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:41:56,980 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 06:41:56,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:41:56,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:41:57,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:41:57,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:41:57,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:41:57,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:41:57,012 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:41:57,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:41:57,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:41:57,013 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:41:57,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:41:57,014 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:41:57,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:41:57,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:41:57,015 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:41:57,015 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:41:57,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:41:57,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:41:57,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:41:57,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:41:57,016 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:41:57,016 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:41:57,017 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:41:57,017 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:41:57,017 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:41:57,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:41:57,017 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:41:57,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:41:57,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:41:57,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:41:57,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:41:57,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:41:57,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:41:57,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:41:57,019 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:41:57,019 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:41:57,019 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:41:57,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:41:57,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:41:57,019 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:41:57,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:41:57,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:41:57,020 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:41:57,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:41:57,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:41:57,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:41:57,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:41:57,229 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:41:57,229 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:41:57,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_loop-simple/recursified_nested_5.c [2023-12-25 06:41:58,320 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:41:58,501 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:41:58,501 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_5.c [2023-12-25 06:41:58,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de44b6501/4a284a21bb684c8ab38ecd3c23efa30e/FLAGa61d1711c [2023-12-25 06:41:58,519 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de44b6501/4a284a21bb684c8ab38ecd3c23efa30e [2023-12-25 06:41:58,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:41:58,524 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:41:58,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:41:58,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:41:58,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:41:58,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528d59bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58, skipping insertion in model container [2023-12-25 06:41:58,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,553 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:41:58,678 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_5.c[2721,2734] [2023-12-25 06:41:58,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:41:58,688 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:41:58,710 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_5.c[2721,2734] [2023-12-25 06:41:58,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:41:58,727 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:41:58,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58 WrapperNode [2023-12-25 06:41:58,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:41:58,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:41:58,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:41:58,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:41:58,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,767 INFO L138 Inliner]: procedures = 19, calls = 62, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2023-12-25 06:41:58,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:41:58,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:41:58,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:41:58,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:41:58,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,797 INFO L175 MemorySlicer]: Split 32 memory accesses to 6 slices as follows [2, 6, 6, 6, 6, 6]. 19 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 1, 1, 1, 1, 1]. The 10 writes are split as follows [0, 2, 2, 2, 2, 2]. [2023-12-25 06:41:58,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:41:58,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:41:58,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:41:58,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:41:58,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (1/1) ... [2023-12-25 06:41:58,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:41:58,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:41:58,868 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) [2023-12-25 06:41:58,899 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 [2023-12-25 06:41:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:41:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:41:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-25 06:41:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-25 06:41:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-25 06:41:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-25 06:41:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-25 06:41:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-25 06:41:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-25 06:41:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-25 06:41:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-25 06:41:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-25 06:41:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-25 06:41:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-25 06:41:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_24_to_25_0 [2023-12-25 06:41:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_24_to_25_0 [2023-12-25 06:41:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_23_to_24_0 [2023-12-25 06:41:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_23_to_24_0 [2023-12-25 06:41:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_26_0 [2023-12-25 06:41:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_26_0 [2023-12-25 06:41:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-25 06:41:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-25 06:41:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-25 06:41:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-25 06:41:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-25 06:41:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-25 06:41:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:41:58,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:41:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_27_0 [2023-12-25 06:41:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_27_0 [2023-12-25 06:41:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_27_0 [2023-12-25 06:41:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_27_0 [2023-12-25 06:41:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-25 06:41:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-25 06:41:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-25 06:41:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-25 06:41:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-25 06:41:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-25 06:41:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-25 06:41:59,052 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:41:59,054 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:41:59,276 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:41:59,299 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:41:59,299 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:41:59,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:41:59 BoogieIcfgContainer [2023-12-25 06:41:59,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:41:59,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:41:59,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:41:59,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:41:59,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:41:58" (1/3) ... [2023-12-25 06:41:59,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289d3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:41:59, skipping insertion in model container [2023-12-25 06:41:59,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:41:58" (2/3) ... [2023-12-25 06:41:59,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289d3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:41:59, skipping insertion in model container [2023-12-25 06:41:59,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:41:59" (3/3) ... [2023-12-25 06:41:59,317 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_5.c [2023-12-25 06:41:59,329 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:41:59,329 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:41:59,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:41:59,379 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;@3f6bc60d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:41:59,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:41:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 37 states have internal predecessors, (42), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 06:41:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-25 06:41:59,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:41:59,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:41:59,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:41:59,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:41:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash -981972173, now seen corresponding path program 1 times [2023-12-25 06:41:59,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:41:59,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714896422] [2023-12-25 06:41:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:41:59,400 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 [2023-12-25 06:41:59,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:41:59,402 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) [2023-12-25 06:41:59,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 06:41:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:41:59,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:41:59,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:41:59,577 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 7 [2023-12-25 06:41:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:41:59,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:41:59,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:41:59,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714896422] [2023-12-25 06:41:59,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714896422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:41:59,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:41:59,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:41:59,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239481] [2023-12-25 06:41:59,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:41:59,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:41:59,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:41:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:41:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:41:59,667 INFO L87 Difference]: Start difference. First operand has 48 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 37 states have internal predecessors, (42), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:41:59,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:41:59,888 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2023-12-25 06:41:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:41:59,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-25 06:41:59,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:41:59,895 INFO L225 Difference]: With dead ends: 63 [2023-12-25 06:41:59,895 INFO L226 Difference]: Without dead ends: 48 [2023-12-25 06:41:59,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:41:59,899 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:41:59,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 53 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:41:59,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-25 06:41:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-25 06:41:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 36 states have internal predecessors, (40), 10 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-25 06:41:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2023-12-25 06:41:59,924 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 16 [2023-12-25 06:41:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:41:59,924 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2023-12-25 06:41:59,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:41:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2023-12-25 06:41:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-25 06:41:59,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:41:59,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:41:59,935 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 [2023-12-25 06:42:00,129 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 [2023-12-25 06:42:00,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:00,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1776176879, now seen corresponding path program 1 times [2023-12-25 06:42:00,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:00,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942772319] [2023-12-25 06:42:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:42:00,131 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 [2023-12-25 06:42:00,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:00,132 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) [2023-12-25 06:42:00,171 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 [2023-12-25 06:42:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:42:00,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:42:00,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:00,222 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 11 treesize of output 7 [2023-12-25 06:42:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 06:42:00,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:42:00,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942772319] [2023-12-25 06:42:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942772319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:42:00,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:42:00,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:42:00,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328986557] [2023-12-25 06:42:00,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:42:00,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:42:00,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:00,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:42:00,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:42:00,281 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:42:00,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:00,451 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2023-12-25 06:42:00,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:42:00,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-12-25 06:42:00,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:00,453 INFO L225 Difference]: With dead ends: 96 [2023-12-25 06:42:00,454 INFO L226 Difference]: Without dead ends: 50 [2023-12-25 06:42:00,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:42:00,455 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:00,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 106 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:42:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-25 06:42:00,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-25 06:42:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.28125) internal successors, (41), 37 states have internal predecessors, (41), 10 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-25 06:42:00,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2023-12-25 06:42:00,461 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 27 [2023-12-25 06:42:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:00,461 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2023-12-25 06:42:00,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:42:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2023-12-25 06:42:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-25 06:42:00,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:00,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:00,475 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 [2023-12-25 06:42:00,668 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 [2023-12-25 06:42:00,670 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:00,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:00,672 INFO L85 PathProgramCache]: Analyzing trace with hash -280149856, now seen corresponding path program 1 times [2023-12-25 06:42:00,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:00,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818998895] [2023-12-25 06:42:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:42:00,674 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 [2023-12-25 06:42:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:00,675 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) [2023-12-25 06:42:00,706 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 [2023-12-25 06:42:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:42:00,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:42:00,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:00,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:42:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:42:00,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:42:00,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:00,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818998895] [2023-12-25 06:42:00,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818998895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:42:00,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:42:00,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:42:00,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903330469] [2023-12-25 06:42:00,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:42:00,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:42:00,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:00,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:42:00,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:42:00,864 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:42:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:00,995 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2023-12-25 06:42:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:42:00,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2023-12-25 06:42:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:00,996 INFO L225 Difference]: With dead ends: 100 [2023-12-25 06:42:00,996 INFO L226 Difference]: Without dead ends: 52 [2023-12-25 06:42:00,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:42:00,998 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:00,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 99 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:42:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-25 06:42:01,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-25 06:42:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 38 states have internal predecessors, (42), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-25 06:42:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-12-25 06:42:01,014 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 38 [2023-12-25 06:42:01,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:01,014 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-12-25 06:42:01,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:42:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-12-25 06:42:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-25 06:42:01,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:01,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:01,034 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 [2023-12-25 06:42:01,219 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 [2023-12-25 06:42:01,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:01,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2032862193, now seen corresponding path program 1 times [2023-12-25 06:42:01,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:01,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456688876] [2023-12-25 06:42:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:42:01,222 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 [2023-12-25 06:42:01,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:01,223 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) [2023-12-25 06:42:01,230 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 [2023-12-25 06:42:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:42:01,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:42:01,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:01,413 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 7 [2023-12-25 06:42:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 06:42:01,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:42:01,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:01,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456688876] [2023-12-25 06:42:01,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456688876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:42:01,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:42:01,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:42:01,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786806658] [2023-12-25 06:42:01,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:42:01,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:42:01,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:01,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:42:01,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:42:01,485 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-25 06:42:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:01,642 INFO L93 Difference]: Finished difference Result 104 states and 136 transitions. [2023-12-25 06:42:01,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:42:01,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) Word has length 49 [2023-12-25 06:42:01,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:01,647 INFO L225 Difference]: With dead ends: 104 [2023-12-25 06:42:01,647 INFO L226 Difference]: Without dead ends: 54 [2023-12-25 06:42:01,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:42:01,648 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 17 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:01,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 144 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:42:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-25 06:42:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-25 06:42:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 39 states have internal predecessors, (43), 10 states have call successors, (10), 5 states have call predecessors, (10), 9 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-25 06:42:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2023-12-25 06:42:01,656 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 49 [2023-12-25 06:42:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:01,658 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-12-25 06:42:01,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-25 06:42:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2023-12-25 06:42:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-25 06:42:01,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:01,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:01,671 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 [2023-12-25 06:42:01,869 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 [2023-12-25 06:42:01,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:01,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:01,871 INFO L85 PathProgramCache]: Analyzing trace with hash -775002057, now seen corresponding path program 1 times [2023-12-25 06:42:01,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:01,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933209109] [2023-12-25 06:42:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:42:01,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:42:01,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:01,876 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) [2023-12-25 06:42:01,880 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 [2023-12-25 06:42:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:42:02,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 06:42:02,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:02,057 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 7 [2023-12-25 06:42:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 06:42:02,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:42:02,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933209109] [2023-12-25 06:42:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933209109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:42:02,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:42:02,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:42:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386234158] [2023-12-25 06:42:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:42:02,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:42:02,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:42:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:42:02,101 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-25 06:42:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:02,184 INFO L93 Difference]: Finished difference Result 108 states and 142 transitions. [2023-12-25 06:42:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:42:02,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) Word has length 60 [2023-12-25 06:42:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:02,185 INFO L225 Difference]: With dead ends: 108 [2023-12-25 06:42:02,185 INFO L226 Difference]: Without dead ends: 56 [2023-12-25 06:42:02,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:42:02,186 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 15 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:02,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 150 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:42:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-25 06:42:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-25 06:42:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 40 states have internal predecessors, (44), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-25 06:42:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-12-25 06:42:02,193 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 60 [2023-12-25 06:42:02,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:02,193 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-12-25 06:42:02,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-25 06:42:02,194 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-12-25 06:42:02,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 06:42:02,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:02,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:02,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 06:42:02,398 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 [2023-12-25 06:42:02,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:02,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:02,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2136706659, now seen corresponding path program 1 times [2023-12-25 06:42:02,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:02,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122702963] [2023-12-25 06:42:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:42:02,400 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 [2023-12-25 06:42:02,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:02,401 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) [2023-12-25 06:42:02,404 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 [2023-12-25 06:42:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:42:02,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-25 06:42:02,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:02,529 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 7 [2023-12-25 06:42:02,557 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 7 [2023-12-25 06:42:02,568 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 7 [2023-12-25 06:42:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 06:42:02,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 06:42:03,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122702963] [2023-12-25 06:42:03,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122702963] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:03,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:03,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2023-12-25 06:42:03,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906254873] [2023-12-25 06:42:03,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:03,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:42:03,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:42:03,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:42:03,857 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 19 states, 13 states have (on average 4.461538461538462) internal successors, (58), 16 states have internal predecessors, (58), 8 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 3 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-25 06:42:04,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:04,339 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2023-12-25 06:42:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:42:04,340 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 4.461538461538462) internal successors, (58), 16 states have internal predecessors, (58), 8 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 3 states have call predecessors, (18), 8 states have call successors, (18) Word has length 65 [2023-12-25 06:42:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:04,341 INFO L225 Difference]: With dead ends: 112 [2023-12-25 06:42:04,341 INFO L226 Difference]: Without dead ends: 58 [2023-12-25 06:42:04,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:42:04,342 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 20 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:04,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 529 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:42:04,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-25 06:42:04,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-12-25 06:42:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.25) internal successors, (45), 41 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 11 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-25 06:42:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2023-12-25 06:42:04,348 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 65 [2023-12-25 06:42:04,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:04,348 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2023-12-25 06:42:04,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 4.461538461538462) internal successors, (58), 16 states have internal predecessors, (58), 8 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 3 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-25 06:42:04,348 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2023-12-25 06:42:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 06:42:04,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:04,349 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:04,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 06:42:04,554 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 [2023-12-25 06:42:04,554 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:04,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash 938349839, now seen corresponding path program 2 times [2023-12-25 06:42:04,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:04,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541543600] [2023-12-25 06:42:04,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:42:04,555 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 [2023-12-25 06:42:04,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:04,556 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) [2023-12-25 06:42:04,558 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 [2023-12-25 06:42:04,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:42:04,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:04,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-25 06:42:04,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:04,732 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 7 [2023-12-25 06:42:04,739 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 7 [2023-12-25 06:42:04,748 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 7 [2023-12-25 06:42:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 06:42:04,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 06:42:06,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:06,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541543600] [2023-12-25 06:42:06,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541543600] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:06,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:06,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 24 [2023-12-25 06:42:06,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973932963] [2023-12-25 06:42:06,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:06,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:42:06,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:06,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:42:06,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:42:06,541 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 24 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 20 states have internal predecessors, (62), 9 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (20), 5 states have call predecessors, (20), 9 states have call successors, (20) [2023-12-25 06:42:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:07,136 INFO L93 Difference]: Finished difference Result 116 states and 150 transitions. [2023-12-25 06:42:07,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:42:07,137 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 20 states have internal predecessors, (62), 9 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (20), 5 states have call predecessors, (20), 9 states have call successors, (20) Word has length 70 [2023-12-25 06:42:07,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:07,138 INFO L225 Difference]: With dead ends: 116 [2023-12-25 06:42:07,138 INFO L226 Difference]: Without dead ends: 60 [2023-12-25 06:42:07,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2023-12-25 06:42:07,139 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:07,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 631 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:42:07,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-25 06:42:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-25 06:42:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 42 states have internal predecessors, (46), 10 states have call successors, (10), 5 states have call predecessors, (10), 12 states have return successors, (17), 12 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-25 06:42:07,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2023-12-25 06:42:07,145 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 70 [2023-12-25 06:42:07,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:07,145 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2023-12-25 06:42:07,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 20 states have internal predecessors, (62), 9 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (20), 5 states have call predecessors, (20), 9 states have call successors, (20) [2023-12-25 06:42:07,146 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2023-12-25 06:42:07,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 06:42:07,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:07,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:07,158 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 [2023-12-25 06:42:07,355 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 [2023-12-25 06:42:07,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:07,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:07,357 INFO L85 PathProgramCache]: Analyzing trace with hash 930324469, now seen corresponding path program 3 times [2023-12-25 06:42:07,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:07,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725873888] [2023-12-25 06:42:07,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:42:07,357 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 [2023-12-25 06:42:07,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:07,372 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) [2023-12-25 06:42:07,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 06:42:07,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-25 06:42:07,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:07,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 06:42:07,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:07,513 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 7 [2023-12-25 06:42:07,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-25 06:42:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-25 06:42:07,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:07,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-25 06:42:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-25 06:42:07,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725873888] [2023-12-25 06:42:07,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725873888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:07,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:07,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2023-12-25 06:42:07,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59047911] [2023-12-25 06:42:07,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:07,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:42:07,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:07,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:42:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:42:07,995 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-25 06:42:08,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:08,477 INFO L93 Difference]: Finished difference Result 95 states and 118 transitions. [2023-12-25 06:42:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:42:08,477 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 75 [2023-12-25 06:42:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:08,478 INFO L225 Difference]: With dead ends: 95 [2023-12-25 06:42:08,478 INFO L226 Difference]: Without dead ends: 84 [2023-12-25 06:42:08,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:42:08,479 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:08,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 171 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:42:08,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-25 06:42:08,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2023-12-25 06:42:08,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 10 states have call successors, (10), 6 states have call predecessors, (10), 13 states have return successors, (19), 14 states have call predecessors, (19), 10 states have call successors, (19) [2023-12-25 06:42:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2023-12-25 06:42:08,485 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 75 [2023-12-25 06:42:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:08,486 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2023-12-25 06:42:08,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-25 06:42:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2023-12-25 06:42:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 06:42:08,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:08,486 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:08,492 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 [2023-12-25 06:42:08,690 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 [2023-12-25 06:42:08,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:08,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:08,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1610382839, now seen corresponding path program 1 times [2023-12-25 06:42:08,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:08,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321675925] [2023-12-25 06:42:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:42:08,691 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 [2023-12-25 06:42:08,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:08,692 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) [2023-12-25 06:42:08,707 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 [2023-12-25 06:42:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:42:08,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-25 06:42:08,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:08,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:42:08,842 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 7 [2023-12-25 06:42:08,852 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 7 [2023-12-25 06:42:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 06:42:09,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:11,716 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 06:42:11,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:11,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321675925] [2023-12-25 06:42:11,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321675925] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:11,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:11,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 29 [2023-12-25 06:42:11,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155136281] [2023-12-25 06:42:11,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:11,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 06:42:11,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:11,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 06:42:11,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2023-12-25 06:42:11,718 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 29 states, 21 states have (on average 3.142857142857143) internal successors, (66), 24 states have internal predecessors, (66), 10 states have call successors, (20), 7 states have call predecessors, (20), 10 states have return successors, (22), 7 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-25 06:42:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:12,477 INFO L93 Difference]: Finished difference Result 130 states and 167 transitions. [2023-12-25 06:42:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:42:12,478 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 3.142857142857143) internal successors, (66), 24 states have internal predecessors, (66), 10 states have call successors, (20), 7 states have call predecessors, (20), 10 states have return successors, (22), 7 states have call predecessors, (22), 10 states have call successors, (22) Word has length 75 [2023-12-25 06:42:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:12,478 INFO L225 Difference]: With dead ends: 130 [2023-12-25 06:42:12,478 INFO L226 Difference]: Without dead ends: 68 [2023-12-25 06:42:12,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 06:42:12,480 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 56 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:12,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 624 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:42:12,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-25 06:42:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-25 06:42:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 46 states have internal predecessors, (52), 10 states have call successors, (10), 6 states have call predecessors, (10), 14 states have return successors, (20), 15 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-25 06:42:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2023-12-25 06:42:12,485 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 75 [2023-12-25 06:42:12,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:12,485 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2023-12-25 06:42:12,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 3.142857142857143) internal successors, (66), 24 states have internal predecessors, (66), 10 states have call successors, (20), 7 states have call predecessors, (20), 10 states have return successors, (22), 7 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-25 06:42:12,486 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2023-12-25 06:42:12,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-25 06:42:12,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:12,486 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:12,491 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 [2023-12-25 06:42:12,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:42:12,691 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:12,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1363721239, now seen corresponding path program 2 times [2023-12-25 06:42:12,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:12,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694240887] [2023-12-25 06:42:12,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:42:12,692 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 [2023-12-25 06:42:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:12,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:42:12,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 06:42:12,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 06:42:12,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:12,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 06:42:12,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-25 06:42:12,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:42:12,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:12,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694240887] [2023-12-25 06:42:12,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694240887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:42:12,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:42:12,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 06:42:12,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410551917] [2023-12-25 06:42:12,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:42:12,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 06:42:12,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:12,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 06:42:12,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 06:42:12,828 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-25 06:42:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:12,852 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2023-12-25 06:42:12,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:42:12,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 80 [2023-12-25 06:42:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:12,854 INFO L225 Difference]: With dead ends: 87 [2023-12-25 06:42:12,854 INFO L226 Difference]: Without dead ends: 80 [2023-12-25 06:42:12,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:42:12,855 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 21 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:12,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 166 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:42:12,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-25 06:42:12,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2023-12-25 06:42:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.2) internal successors, (54), 48 states have internal predecessors, (54), 10 states have call successors, (10), 6 states have call predecessors, (10), 14 states have return successors, (20), 15 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-25 06:42:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2023-12-25 06:42:12,865 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 80 [2023-12-25 06:42:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:12,867 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2023-12-25 06:42:12,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-25 06:42:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2023-12-25 06:42:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-25 06:42:12,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:12,868 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:12,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-25 06:42:13,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:42:13,071 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:13,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:13,072 INFO L85 PathProgramCache]: Analyzing trace with hash 411286123, now seen corresponding path program 1 times [2023-12-25 06:42:13,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:13,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888913000] [2023-12-25 06:42:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:42:13,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:42:13,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:13,073 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) [2023-12-25 06:42:13,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 06:42:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:42:13,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-25 06:42:13,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:13,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:42:13,257 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 7 [2023-12-25 06:42:13,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:42:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 06:42:13,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 06:42:16,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:16,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888913000] [2023-12-25 06:42:16,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888913000] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:16,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:16,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22] total 34 [2023-12-25 06:42:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343454165] [2023-12-25 06:42:16,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:16,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-25 06:42:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:16,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-25 06:42:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 06:42:16,997 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 34 states, 25 states have (on average 2.8) internal successors, (70), 28 states have internal predecessors, (70), 11 states have call successors, (21), 8 states have call predecessors, (21), 12 states have return successors, (24), 9 states have call predecessors, (24), 11 states have call successors, (24) [2023-12-25 06:42:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:18,134 INFO L93 Difference]: Finished difference Result 138 states and 175 transitions. [2023-12-25 06:42:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 06:42:18,135 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 25 states have (on average 2.8) internal successors, (70), 28 states have internal predecessors, (70), 11 states have call successors, (21), 8 states have call predecessors, (21), 12 states have return successors, (24), 9 states have call predecessors, (24), 11 states have call successors, (24) Word has length 80 [2023-12-25 06:42:18,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:18,135 INFO L225 Difference]: With dead ends: 138 [2023-12-25 06:42:18,135 INFO L226 Difference]: Without dead ends: 72 [2023-12-25 06:42:18,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=225, Invalid=1415, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 06:42:18,137 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 88 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:18,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 762 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:42:18,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-25 06:42:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-12-25 06:42:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 49 states have internal predecessors, (55), 10 states have call successors, (10), 6 states have call predecessors, (10), 15 states have return successors, (21), 16 states have call predecessors, (21), 10 states have call successors, (21) [2023-12-25 06:42:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2023-12-25 06:42:18,141 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 80 [2023-12-25 06:42:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:18,142 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2023-12-25 06:42:18,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 25 states have (on average 2.8) internal successors, (70), 28 states have internal predecessors, (70), 11 states have call successors, (21), 8 states have call predecessors, (21), 12 states have return successors, (24), 9 states have call predecessors, (24), 11 states have call successors, (24) [2023-12-25 06:42:18,142 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2023-12-25 06:42:18,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-25 06:42:18,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:18,142 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:18,150 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 [2023-12-25 06:42:18,343 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 [2023-12-25 06:42:18,343 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:18,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:18,343 INFO L85 PathProgramCache]: Analyzing trace with hash 427321041, now seen corresponding path program 2 times [2023-12-25 06:42:18,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:18,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590608544] [2023-12-25 06:42:18,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:42:18,344 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 [2023-12-25 06:42:18,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:18,345 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) [2023-12-25 06:42:18,352 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 [2023-12-25 06:42:18,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 06:42:18,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:18,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:42:18,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-25 06:42:18,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:42:18,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:18,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590608544] [2023-12-25 06:42:18,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590608544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:42:18,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:42:18,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:42:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690322440] [2023-12-25 06:42:18,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:42:18,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:42:18,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:18,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:42:18,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:42:18,469 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-25 06:42:18,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:18,519 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2023-12-25 06:42:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:42:18,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 85 [2023-12-25 06:42:18,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:18,521 INFO L225 Difference]: With dead ends: 90 [2023-12-25 06:42:18,521 INFO L226 Difference]: Without dead ends: 85 [2023-12-25 06:42:18,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 06:42:18,521 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 24 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:18,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 216 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:42:18,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-25 06:42:18,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2023-12-25 06:42:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 48 states have (on average 1.1875) internal successors, (57), 51 states have internal predecessors, (57), 10 states have call successors, (10), 6 states have call predecessors, (10), 15 states have return successors, (21), 16 states have call predecessors, (21), 10 states have call successors, (21) [2023-12-25 06:42:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2023-12-25 06:42:18,539 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 85 [2023-12-25 06:42:18,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:18,539 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2023-12-25 06:42:18,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-25 06:42:18,539 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2023-12-25 06:42:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-25 06:42:18,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:18,540 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:18,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 06:42:18,742 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 [2023-12-25 06:42:18,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:18,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 429168083, now seen corresponding path program 1 times [2023-12-25 06:42:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:18,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116994503] [2023-12-25 06:42:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:42:18,744 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 [2023-12-25 06:42:18,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:18,745 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) [2023-12-25 06:42:18,777 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 [2023-12-25 06:42:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:42:18,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-25 06:42:18,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:18,916 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 7 [2023-12-25 06:42:18,923 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 7 [2023-12-25 06:42:18,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:42:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-25 06:42:19,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 06:42:24,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116994503] [2023-12-25 06:42:24,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116994503] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:24,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:24,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26] total 39 [2023-12-25 06:42:24,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718596078] [2023-12-25 06:42:24,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:24,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-25 06:42:24,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-25 06:42:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 06:42:24,019 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 39 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 32 states have internal predecessors, (74), 12 states have call successors, (22), 9 states have call predecessors, (22), 14 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) [2023-12-25 06:42:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:25,530 INFO L93 Difference]: Finished difference Result 146 states and 183 transitions. [2023-12-25 06:42:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:42:25,533 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 32 states have internal predecessors, (74), 12 states have call successors, (22), 9 states have call predecessors, (22), 14 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) Word has length 85 [2023-12-25 06:42:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:25,533 INFO L225 Difference]: With dead ends: 146 [2023-12-25 06:42:25,533 INFO L226 Difference]: Without dead ends: 76 [2023-12-25 06:42:25,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=277, Invalid=1885, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 06:42:25,535 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 41 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:25,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 950 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:42:25,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-25 06:42:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-25 06:42:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.183673469387755) internal successors, (58), 52 states have internal predecessors, (58), 10 states have call successors, (10), 6 states have call predecessors, (10), 16 states have return successors, (22), 17 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-25 06:42:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2023-12-25 06:42:25,548 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 85 [2023-12-25 06:42:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:25,548 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2023-12-25 06:42:25,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 32 states have internal predecessors, (74), 12 states have call successors, (22), 9 states have call predecessors, (22), 14 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) [2023-12-25 06:42:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2023-12-25 06:42:25,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 06:42:25,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:25,549 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:25,555 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 (14)] Ended with exit code 0 [2023-12-25 06:42:25,758 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 [2023-12-25 06:42:25,759 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:25,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:25,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1355472453, now seen corresponding path program 2 times [2023-12-25 06:42:25,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:25,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630100776] [2023-12-25 06:42:25,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:42:25,760 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 [2023-12-25 06:42:25,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:25,762 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) [2023-12-25 06:42:25,763 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 [2023-12-25 06:42:25,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 06:42:25,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:25,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 06:42:25,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-25 06:42:25,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:42:25,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:25,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630100776] [2023-12-25 06:42:25,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630100776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:42:25,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:42:25,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:42:25,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571269832] [2023-12-25 06:42:25,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:42:25,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:42:25,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:42:25,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:42:25,931 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-25 06:42:25,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:25,995 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2023-12-25 06:42:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:42:25,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 90 [2023-12-25 06:42:25,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:25,996 INFO L225 Difference]: With dead ends: 91 [2023-12-25 06:42:25,996 INFO L226 Difference]: Without dead ends: 88 [2023-12-25 06:42:25,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:42:25,996 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 19 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:25,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 258 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:42:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-25 06:42:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2023-12-25 06:42:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 54 states have internal predecessors, (60), 10 states have call successors, (10), 6 states have call predecessors, (10), 16 states have return successors, (22), 17 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-25 06:42:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2023-12-25 06:42:26,001 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 90 [2023-12-25 06:42:26,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:26,001 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2023-12-25 06:42:26,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-25 06:42:26,001 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2023-12-25 06:42:26,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 06:42:26,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:26,002 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:26,017 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 [2023-12-25 06:42:26,202 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 [2023-12-25 06:42:26,203 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:26,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:26,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1355474375, now seen corresponding path program 1 times [2023-12-25 06:42:26,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:26,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073293290] [2023-12-25 06:42:26,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:42:26,203 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 [2023-12-25 06:42:26,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:26,204 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) [2023-12-25 06:42:26,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 06:42:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:42:26,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-25 06:42:26,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:26,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:42:26,413 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 7 [2023-12-25 06:42:26,443 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 7 [2023-12-25 06:42:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-25 06:42:26,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-25 06:42:27,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:27,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073293290] [2023-12-25 06:42:27,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073293290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:27,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:27,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2023-12-25 06:42:27,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173890616] [2023-12-25 06:42:27,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:27,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:42:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:42:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:42:27,464 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 19 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 16 states have internal predecessors, (56), 10 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 10 states have call successors, (18) [2023-12-25 06:42:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:27,938 INFO L93 Difference]: Finished difference Result 154 states and 189 transitions. [2023-12-25 06:42:27,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:42:27,938 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 16 states have internal predecessors, (56), 10 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 10 states have call successors, (18) Word has length 90 [2023-12-25 06:42:27,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:27,939 INFO L225 Difference]: With dead ends: 154 [2023-12-25 06:42:27,939 INFO L226 Difference]: Without dead ends: 80 [2023-12-25 06:42:27,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:42:27,940 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:27,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 405 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:42:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-25 06:42:27,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-25 06:42:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 55 states have internal predecessors, (61), 10 states have call successors, (10), 6 states have call predecessors, (10), 17 states have return successors, (23), 18 states have call predecessors, (23), 10 states have call successors, (23) [2023-12-25 06:42:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2023-12-25 06:42:27,944 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 90 [2023-12-25 06:42:27,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:27,944 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2023-12-25 06:42:27,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 16 states have internal predecessors, (56), 10 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 10 states have call successors, (18) [2023-12-25 06:42:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2023-12-25 06:42:27,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-25 06:42:27,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:27,945 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:27,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 06:42:28,149 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 [2023-12-25 06:42:28,150 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:28,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:28,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1912189341, now seen corresponding path program 2 times [2023-12-25 06:42:28,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:28,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083879755] [2023-12-25 06:42:28,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:42:28,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:42:28,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:28,152 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) [2023-12-25 06:42:28,154 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 [2023-12-25 06:42:28,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:42:28,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:28,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 06:42:28,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:28,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:42:28,429 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 7 [2023-12-25 06:42:28,437 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 7 [2023-12-25 06:42:28,477 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 7 [2023-12-25 06:42:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2023-12-25 06:42:28,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-12-25 06:42:31,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083879755] [2023-12-25 06:42:31,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083879755] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:31,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:31,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2023-12-25 06:42:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857473375] [2023-12-25 06:42:31,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:31,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 06:42:31,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:31,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 06:42:31,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:42:31,204 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 28 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 23 states have internal predecessors, (64), 14 states have call successors, (22), 7 states have call predecessors, (22), 8 states have return successors, (23), 9 states have call predecessors, (23), 14 states have call successors, (23) [2023-12-25 06:42:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:32,128 INFO L93 Difference]: Finished difference Result 158 states and 193 transitions. [2023-12-25 06:42:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:42:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 23 states have internal predecessors, (64), 14 states have call successors, (22), 7 states have call predecessors, (22), 8 states have return successors, (23), 9 states have call predecessors, (23), 14 states have call successors, (23) Word has length 131 [2023-12-25 06:42:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:32,130 INFO L225 Difference]: With dead ends: 158 [2023-12-25 06:42:32,130 INFO L226 Difference]: Without dead ends: 82 [2023-12-25 06:42:32,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=203, Invalid=1203, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 06:42:32,131 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 80 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:32,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 514 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:42:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-25 06:42:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-25 06:42:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.169811320754717) internal successors, (62), 56 states have internal predecessors, (62), 10 states have call successors, (10), 6 states have call predecessors, (10), 18 states have return successors, (24), 19 states have call predecessors, (24), 10 states have call successors, (24) [2023-12-25 06:42:32,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2023-12-25 06:42:32,135 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 131 [2023-12-25 06:42:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:32,136 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2023-12-25 06:42:32,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 23 states have internal predecessors, (64), 14 states have call successors, (22), 7 states have call predecessors, (22), 8 states have return successors, (23), 9 states have call predecessors, (23), 14 states have call successors, (23) [2023-12-25 06:42:32,136 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2023-12-25 06:42:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-25 06:42:32,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:32,137 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 18, 18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:42:32,150 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 [2023-12-25 06:42:32,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:42:32,342 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:32,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:32,342 INFO L85 PathProgramCache]: Analyzing trace with hash -625261967, now seen corresponding path program 3 times [2023-12-25 06:42:32,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:32,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687316678] [2023-12-25 06:42:32,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:42:32,343 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 [2023-12-25 06:42:32,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:32,344 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:42:32,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 06:42:32,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-25 06:42:32,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:32,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:42:32,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:32,530 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 7 [2023-12-25 06:42:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-12-25 06:42:32,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1034 trivial. 0 not checked. [2023-12-25 06:42:33,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:33,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687316678] [2023-12-25 06:42:33,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687316678] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:33,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:33,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-12-25 06:42:33,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532944105] [2023-12-25 06:42:33,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:33,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:42:33,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:33,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:42:33,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:42:33,329 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand has 17 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-25 06:42:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:33,833 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2023-12-25 06:42:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:42:33,834 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 172 [2023-12-25 06:42:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:33,835 INFO L225 Difference]: With dead ends: 91 [2023-12-25 06:42:33,835 INFO L226 Difference]: Without dead ends: 80 [2023-12-25 06:42:33,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:42:33,835 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 29 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:33,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 188 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:42:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-25 06:42:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-25 06:42:33,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 6 states have call predecessors, (10), 18 states have return successors, (23), 18 states have call predecessors, (23), 10 states have call successors, (23) [2023-12-25 06:42:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2023-12-25 06:42:33,839 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 172 [2023-12-25 06:42:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:33,839 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2023-12-25 06:42:33,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-25 06:42:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2023-12-25 06:42:33,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-25 06:42:33,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:33,842 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 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] [2023-12-25 06:42:33,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 06:42:34,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:42:34,042 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:34,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:34,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1353692641, now seen corresponding path program 4 times [2023-12-25 06:42:34,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:34,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313278189] [2023-12-25 06:42:34,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:42:34,044 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 [2023-12-25 06:42:34,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:34,044 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) [2023-12-25 06:42:34,077 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 [2023-12-25 06:42:34,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:42:34,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:34,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-25 06:42:34,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:34,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:42:34,504 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 7 [2023-12-25 06:42:34,512 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 7 [2023-12-25 06:42:34,550 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 7 [2023-12-25 06:42:34,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4300 backedges. 2198 proven. 125 refuted. 0 times theorem prover too weak. 1977 trivial. 0 not checked. [2023-12-25 06:42:34,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4300 backedges. 8 proven. 139 refuted. 0 times theorem prover too weak. 4153 trivial. 0 not checked. [2023-12-25 06:42:38,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:38,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313278189] [2023-12-25 06:42:38,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313278189] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:38,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:38,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2023-12-25 06:42:38,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404901894] [2023-12-25 06:42:38,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:38,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-25 06:42:38,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:38,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-25 06:42:38,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:42:38,845 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 33 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 27 states have internal predecessors, (90), 16 states have call successors, (37), 8 states have call predecessors, (37), 10 states have return successors, (40), 12 states have call predecessors, (40), 16 states have call successors, (40) [2023-12-25 06:42:40,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:40,081 INFO L93 Difference]: Finished difference Result 158 states and 191 transitions. [2023-12-25 06:42:40,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:42:40,082 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 27 states have internal predecessors, (90), 16 states have call successors, (37), 8 states have call predecessors, (37), 10 states have return successors, (40), 12 states have call predecessors, (40), 16 states have call successors, (40) Word has length 328 [2023-12-25 06:42:40,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:40,083 INFO L225 Difference]: With dead ends: 158 [2023-12-25 06:42:40,083 INFO L226 Difference]: Without dead ends: 82 [2023-12-25 06:42:40,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=258, Invalid=1634, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 06:42:40,085 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 99 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:40,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 636 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:42:40,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-25 06:42:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-25 06:42:40,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 56 states have internal predecessors, (61), 10 states have call successors, (10), 6 states have call predecessors, (10), 19 states have return successors, (24), 19 states have call predecessors, (24), 10 states have call successors, (24) [2023-12-25 06:42:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2023-12-25 06:42:40,092 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 328 [2023-12-25 06:42:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:40,092 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2023-12-25 06:42:40,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 27 states have internal predecessors, (90), 16 states have call successors, (37), 8 states have call predecessors, (37), 10 states have return successors, (40), 12 states have call predecessors, (40), 16 states have call successors, (40) [2023-12-25 06:42:40,093 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2023-12-25 06:42:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-12-25 06:42:40,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:40,096 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 48, 48, 48, 10, 10, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 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] [2023-12-25 06:42:40,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-25 06:42:40,305 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 [2023-12-25 06:42:40,305 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:40,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:40,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1975557201, now seen corresponding path program 5 times [2023-12-25 06:42:40,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:40,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286764231] [2023-12-25 06:42:40,306 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:42:40,306 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 [2023-12-25 06:42:40,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:40,307 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) [2023-12-25 06:42:40,342 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 [2023-12-25 06:42:41,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-12-25 06:42:41,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:41,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-25 06:42:41,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:41,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:42:41,544 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 7 [2023-12-25 06:42:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7621 backedges. 3940 proven. 179 refuted. 0 times theorem prover too weak. 3502 trivial. 0 not checked. [2023-12-25 06:42:42,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7621 backedges. 8 proven. 221 refuted. 0 times theorem prover too weak. 7392 trivial. 0 not checked. [2023-12-25 06:42:47,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:47,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286764231] [2023-12-25 06:42:47,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286764231] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:42:47,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:47,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 36 [2023-12-25 06:42:47,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020585332] [2023-12-25 06:42:47,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:47,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 06:42:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:47,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 06:42:47,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 06:42:47,912 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand has 36 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 29 states have internal predecessors, (93), 16 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (41), 15 states have call predecessors, (41), 16 states have call successors, (41) [2023-12-25 06:42:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:49,538 INFO L93 Difference]: Finished difference Result 162 states and 195 transitions. [2023-12-25 06:42:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:42:49,539 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 29 states have internal predecessors, (93), 16 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (41), 15 states have call predecessors, (41), 16 states have call successors, (41) Word has length 410 [2023-12-25 06:42:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:49,540 INFO L225 Difference]: With dead ends: 162 [2023-12-25 06:42:49,540 INFO L226 Difference]: Without dead ends: 84 [2023-12-25 06:42:49,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=302, Invalid=1860, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 06:42:49,541 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 85 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:49,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 784 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 06:42:49,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-25 06:42:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-25 06:42:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.169811320754717) internal successors, (62), 57 states have internal predecessors, (62), 10 states have call successors, (10), 6 states have call predecessors, (10), 20 states have return successors, (25), 20 states have call predecessors, (25), 10 states have call successors, (25) [2023-12-25 06:42:49,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2023-12-25 06:42:49,549 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 410 [2023-12-25 06:42:49,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:49,549 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2023-12-25 06:42:49,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 29 states have internal predecessors, (93), 16 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (41), 15 states have call predecessors, (41), 16 states have call successors, (41) [2023-12-25 06:42:49,550 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2023-12-25 06:42:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-25 06:42:49,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:49,552 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 60, 60, 60, 12, 12, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 3, 3, 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] [2023-12-25 06:42:49,564 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 (20)] Ended with exit code 0 [2023-12-25 06:42:49,762 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 [2023-12-25 06:42:49,763 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:49,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:49,763 INFO L85 PathProgramCache]: Analyzing trace with hash -108474509, now seen corresponding path program 6 times [2023-12-25 06:42:49,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:49,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162276985] [2023-12-25 06:42:49,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:42:49,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:42:49,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:49,765 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) [2023-12-25 06:42:49,765 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 [2023-12-25 06:42:50,080 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-25 06:42:50,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:50,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-25 06:42:50,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:50,095 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 7 [2023-12-25 06:42:50,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-25 06:42:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11898 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11890 trivial. 0 not checked. [2023-12-25 06:42:50,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:50,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-25 06:42:50,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:42:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162276985] [2023-12-25 06:42:50,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162276985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:42:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [484096560] [2023-12-25 06:42:50,913 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:42:50,913 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 06:42:50,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 06:42:50,950 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 06:42:50,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-25 06:42:51,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 06:42:51,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856153946] [2023-12-25 06:42:51,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:42:51,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 06:42:51,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:42:51,511 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 06:42:51,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 06:42:51,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 1 [2023-12-25 06:42:51,944 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-25 06:42:51,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:51,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-25 06:42:51,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:52,002 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 7 [2023-12-25 06:42:52,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-25 06:42:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 11898 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 11865 trivial. 0 not checked. [2023-12-25 06:42:52,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:42:52,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-25 06:42:53,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856153946] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 06:42:53,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:42:53,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2023-12-25 06:42:53,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157315716] [2023-12-25 06:42:53,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:42:53,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 06:42:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:42:53,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 06:42:53,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:42:53,143 INFO L87 Difference]: Start difference. First operand 84 states and 97 transitions. Second operand has 18 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 9 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2023-12-25 06:42:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:42:54,646 INFO L93 Difference]: Finished difference Result 156 states and 183 transitions. [2023-12-25 06:42:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 06:42:54,646 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 9 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) Word has length 492 [2023-12-25 06:42:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:42:54,648 INFO L225 Difference]: With dead ends: 156 [2023-12-25 06:42:54,648 INFO L226 Difference]: Without dead ends: 143 [2023-12-25 06:42:54,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 999 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=254, Invalid=2196, Unknown=0, NotChecked=0, Total=2450 [2023-12-25 06:42:54,649 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 139 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:42:54,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 175 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:42:54,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-25 06:42:54,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 104. [2023-12-25 06:42:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 68 states have internal predecessors, (77), 11 states have call successors, (11), 7 states have call predecessors, (11), 26 states have return successors, (41), 28 states have call predecessors, (41), 11 states have call successors, (41) [2023-12-25 06:42:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2023-12-25 06:42:54,654 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 492 [2023-12-25 06:42:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:42:54,655 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2023-12-25 06:42:54,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 9 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2023-12-25 06:42:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2023-12-25 06:42:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-25 06:42:54,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:42:54,659 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 60, 60, 60, 12, 12, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 3, 3, 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] [2023-12-25 06:42:54,681 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 [2023-12-25 06:42:54,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-25 06:42:55,070 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=3,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 06:42:55,070 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:42:55,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:42:55,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1946527109, now seen corresponding path program 4 times [2023-12-25 06:42:55,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:42:55,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884774980] [2023-12-25 06:42:55,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:42:55,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:42:55,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:42:55,073 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) [2023-12-25 06:42:55,082 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 [2023-12-25 06:42:55,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:42:55,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:42:55,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-25 06:42:55,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:42:55,944 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 7 [2023-12-25 06:42:55,950 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 7 [2023-12-25 06:42:55,962 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 7 [2023-12-25 06:42:55,999 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 7 [2023-12-25 06:42:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11898 backedges. 6038 proven. 391 refuted. 0 times theorem prover too weak. 5469 trivial. 0 not checked. [2023-12-25 06:42:56,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:43:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11898 backedges. 8 proven. 324 refuted. 0 times theorem prover too weak. 11566 trivial. 0 not checked. [2023-12-25 06:43:03,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:43:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884774980] [2023-12-25 06:43:03,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884774980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:43:03,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:43:03,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26] total 43 [2023-12-25 06:43:03,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136719162] [2023-12-25 06:43:03,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:43:03,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-25 06:43:03,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:43:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-25 06:43:03,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 06:43:03,635 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand has 43 states, 31 states have (on average 3.225806451612903) internal successors, (100), 35 states have internal predecessors, (100), 20 states have call successors, (41), 10 states have call predecessors, (41), 14 states have return successors, (46), 18 states have call predecessors, (46), 20 states have call successors, (46) [2023-12-25 06:43:06,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:43:06,068 INFO L93 Difference]: Finished difference Result 206 states and 275 transitions. [2023-12-25 06:43:06,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:43:06,068 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 31 states have (on average 3.225806451612903) internal successors, (100), 35 states have internal predecessors, (100), 20 states have call successors, (41), 10 states have call predecessors, (41), 14 states have return successors, (46), 18 states have call predecessors, (46), 20 states have call successors, (46) Word has length 492 [2023-12-25 06:43:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:43:06,069 INFO L225 Difference]: With dead ends: 206 [2023-12-25 06:43:06,069 INFO L226 Difference]: Without dead ends: 106 [2023-12-25 06:43:06,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 941 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=380, Invalid=2700, Unknown=0, NotChecked=0, Total=3080 [2023-12-25 06:43:06,071 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 93 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:43:06,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 918 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 06:43:06,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-25 06:43:06,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-25 06:43:06,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 67 states have (on average 1.164179104477612) internal successors, (78), 69 states have internal predecessors, (78), 11 states have call successors, (11), 7 states have call predecessors, (11), 27 states have return successors, (42), 29 states have call predecessors, (42), 11 states have call successors, (42) [2023-12-25 06:43:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 131 transitions. [2023-12-25 06:43:06,078 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 131 transitions. Word has length 492 [2023-12-25 06:43:06,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:43:06,078 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 131 transitions. [2023-12-25 06:43:06,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 31 states have (on average 3.225806451612903) internal successors, (100), 35 states have internal predecessors, (100), 20 states have call successors, (41), 10 states have call predecessors, (41), 14 states have return successors, (46), 18 states have call predecessors, (46), 20 states have call successors, (46) [2023-12-25 06:43:06,079 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 131 transitions. [2023-12-25 06:43:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2023-12-25 06:43:06,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:43:06,081 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 72, 72, 72, 14, 14, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 3, 3, 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] [2023-12-25 06:43:06,097 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 (24)] Ended with exit code 0 [2023-12-25 06:43:06,290 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 [2023-12-25 06:43:06,291 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:43:06,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:43:06,291 INFO L85 PathProgramCache]: Analyzing trace with hash -655560201, now seen corresponding path program 5 times [2023-12-25 06:43:06,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:43:06,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271735473] [2023-12-25 06:43:06,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:43:06,292 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 [2023-12-25 06:43:06,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:43:06,295 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) [2023-12-25 06:43:06,296 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 [2023-12-25 06:43:09,814 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 44 check-sat command(s) [2023-12-25 06:43:09,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:43:09,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-25 06:43:09,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:43:09,865 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 7 [2023-12-25 06:43:09,902 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 7 [2023-12-25 06:43:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17131 backedges. 8715 proven. 136 refuted. 0 times theorem prover too weak. 8280 trivial. 0 not checked. [2023-12-25 06:43:10,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:43:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 17131 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 17093 trivial. 0 not checked. [2023-12-25 06:43:12,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:43:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271735473] [2023-12-25 06:43:12,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271735473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:43:12,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:43:12,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-12-25 06:43:12,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417395766] [2023-12-25 06:43:12,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:43:12,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:43:12,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:43:12,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:43:12,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:43:12,824 INFO L87 Difference]: Start difference. First operand 106 states and 131 transitions. Second operand has 21 states, 15 states have (on average 5.266666666666667) internal successors, (79), 17 states have internal predecessors, (79), 10 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (30), 6 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-25 06:43:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:43:13,465 INFO L93 Difference]: Finished difference Result 210 states and 277 transitions. [2023-12-25 06:43:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:43:13,465 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 5.266666666666667) internal successors, (79), 17 states have internal predecessors, (79), 10 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (30), 6 states have call predecessors, (30), 10 states have call successors, (30) Word has length 574 [2023-12-25 06:43:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:43:13,467 INFO L225 Difference]: With dead ends: 210 [2023-12-25 06:43:13,468 INFO L226 Difference]: Without dead ends: 108 [2023-12-25 06:43:13,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1127 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:43:13,469 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 81 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:43:13,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 330 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:43:13,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-25 06:43:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-12-25 06:43:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 68 states have (on average 1.161764705882353) internal successors, (79), 70 states have internal predecessors, (79), 11 states have call successors, (11), 7 states have call predecessors, (11), 28 states have return successors, (43), 30 states have call predecessors, (43), 11 states have call successors, (43) [2023-12-25 06:43:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 133 transitions. [2023-12-25 06:43:13,486 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 133 transitions. Word has length 574 [2023-12-25 06:43:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:43:13,486 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 133 transitions. [2023-12-25 06:43:13,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 15 states have (on average 5.266666666666667) internal successors, (79), 17 states have internal predecessors, (79), 10 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (30), 6 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-25 06:43:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 133 transitions. [2023-12-25 06:43:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2023-12-25 06:43:13,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:43:13,492 INFO L195 NwaCegarLoop]: trace histogram [168, 168, 144, 144, 144, 28, 28, 24, 24, 24, 24, 24, 24, 24, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-12-25 06:43:13,510 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 (25)] Ended with exit code 0 [2023-12-25 06:43:13,693 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 [2023-12-25 06:43:13,693 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:43:13,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:43:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2092210849, now seen corresponding path program 6 times [2023-12-25 06:43:13,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:43:13,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556201676] [2023-12-25 06:43:13,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:43:13,695 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 [2023-12-25 06:43:13,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:43:13,697 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) [2023-12-25 06:43:13,698 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 [2023-12-25 06:43:14,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-25 06:43:14,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:43:14,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:43:14,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:43:14,282 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 7 [2023-12-25 06:43:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 68868 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 68860 trivial. 0 not checked. [2023-12-25 06:43:14,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:43:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 68868 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 68853 trivial. 0 not checked. [2023-12-25 06:43:17,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:43:17,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556201676] [2023-12-25 06:43:17,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556201676] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:43:17,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:43:17,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 22 [2023-12-25 06:43:17,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304412752] [2023-12-25 06:43:17,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:43:17,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 06:43:17,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:43:17,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 06:43:17,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-25 06:43:17,594 INFO L87 Difference]: Start difference. First operand 108 states and 133 transitions. Second operand has 22 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2023-12-25 06:43:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:43:18,265 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2023-12-25 06:43:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:43:18,266 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) Word has length 1088 [2023-12-25 06:43:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:43:18,281 INFO L225 Difference]: With dead ends: 117 [2023-12-25 06:43:18,281 INFO L226 Difference]: Without dead ends: 106 [2023-12-25 06:43:18,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2178 GetRequests, 2154 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:43:18,296 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:43:18,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 245 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:43:18,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-25 06:43:18,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-25 06:43:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 69 states have internal predecessors, (77), 11 states have call successors, (11), 7 states have call predecessors, (11), 28 states have return successors, (41), 29 states have call predecessors, (41), 11 states have call successors, (41) [2023-12-25 06:43:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2023-12-25 06:43:18,303 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 1088 [2023-12-25 06:43:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:43:18,304 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2023-12-25 06:43:18,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2023-12-25 06:43:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2023-12-25 06:43:18,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2150 [2023-12-25 06:43:18,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:43:18,334 INFO L195 NwaCegarLoop]: trace histogram [336, 336, 288, 288, 288, 56, 56, 48, 48, 48, 48, 48, 48, 48, 12, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:43:18,354 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 [2023-12-25 06:43:18,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:43:18,555 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:43:18,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:43:18,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1613596207, now seen corresponding path program 1 times [2023-12-25 06:43:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:43:18,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752269219] [2023-12-25 06:43:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:43:18,558 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 [2023-12-25 06:43:18,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:43:18,573 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:43:18,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-25 06:43:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:43:23,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 6159 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-25 06:43:23,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:43:23,139 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 7 [2023-12-25 06:43:23,146 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 7 [2023-12-25 06:43:23,155 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 7 [2023-12-25 06:43:23,195 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 7 [2023-12-25 06:43:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 276475 backedges. 104039 proven. 256 refuted. 0 times theorem prover too weak. 172180 trivial. 0 not checked. [2023-12-25 06:43:23,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:43:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 276475 backedges. 10 proven. 180 refuted. 0 times theorem prover too weak. 276285 trivial. 0 not checked. [2023-12-25 06:43:30,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:43:30,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752269219] [2023-12-25 06:43:30,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752269219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:43:30,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:43:30,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2023-12-25 06:43:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607988799] [2023-12-25 06:43:30,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:43:30,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 06:43:30,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:43:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 06:43:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:43:30,198 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 28 states, 19 states have (on average 4.473684210526316) internal successors, (85), 23 states have internal predecessors, (85), 14 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (35), 9 states have call predecessors, (35), 14 states have call successors, (35) [2023-12-25 06:43:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:43:31,190 INFO L93 Difference]: Finished difference Result 210 states and 273 transitions. [2023-12-25 06:43:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:43:31,190 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 4.473684210526316) internal successors, (85), 23 states have internal predecessors, (85), 14 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (35), 9 states have call predecessors, (35), 14 states have call successors, (35) Word has length 2149 [2023-12-25 06:43:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:43:31,192 INFO L225 Difference]: With dead ends: 210 [2023-12-25 06:43:31,192 INFO L226 Difference]: Without dead ends: 108 [2023-12-25 06:43:31,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4307 GetRequests, 4270 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=204, Invalid=1278, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 06:43:31,193 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 87 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:43:31,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 462 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:43:31,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-25 06:43:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-12-25 06:43:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 67 states have (on average 1.164179104477612) internal successors, (78), 70 states have internal predecessors, (78), 11 states have call successors, (11), 7 states have call predecessors, (11), 29 states have return successors, (42), 30 states have call predecessors, (42), 11 states have call successors, (42) [2023-12-25 06:43:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2023-12-25 06:43:31,198 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 2149 [2023-12-25 06:43:31,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:43:31,199 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2023-12-25 06:43:31,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 4.473684210526316) internal successors, (85), 23 states have internal predecessors, (85), 14 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (35), 9 states have call predecessors, (35), 14 states have call successors, (35) [2023-12-25 06:43:31,199 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2023-12-25 06:43:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2396 [2023-12-25 06:43:31,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:43:31,307 INFO L195 NwaCegarLoop]: trace histogram [378, 378, 324, 324, 324, 63, 63, 54, 54, 54, 54, 54, 54, 54, 12, 12, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:43:31,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-25 06:43:31,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:43:31,507 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:43:31,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:43:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1908660009, now seen corresponding path program 2 times [2023-12-25 06:43:31,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:43:31,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287620432] [2023-12-25 06:43:31,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:43:31,510 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 [2023-12-25 06:43:31,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:43:31,518 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) [2023-12-25 06:43:31,519 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 [2023-12-25 06:43:38,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:43:38,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:43:38,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 6807 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-25 06:43:38,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:43:38,466 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 7 [2023-12-25 06:43:38,473 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 7 [2023-12-25 06:43:38,480 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 7 [2023-12-25 06:43:38,517 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 7 [2023-12-25 06:43:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 349917 backedges. 156010 proven. 740 refuted. 0 times theorem prover too weak. 193167 trivial. 0 not checked. [2023-12-25 06:43:38,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:43:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 349917 backedges. 8 proven. 233 refuted. 0 times theorem prover too weak. 349676 trivial. 0 not checked. [2023-12-25 06:43:46,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:43:46,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287620432] [2023-12-25 06:43:46,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287620432] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:43:46,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:43:46,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2023-12-25 06:43:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173266132] [2023-12-25 06:43:46,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:43:46,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-25 06:43:46,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:43:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-25 06:43:46,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:43:46,172 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand has 33 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 27 states have internal predecessors, (90), 16 states have call successors, (36), 8 states have call predecessors, (36), 10 states have return successors, (38), 12 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-25 06:43:47,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:43:47,659 INFO L93 Difference]: Finished difference Result 214 states and 277 transitions. [2023-12-25 06:43:47,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 06:43:47,660 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 27 states have internal predecessors, (90), 16 states have call successors, (36), 8 states have call predecessors, (36), 10 states have return successors, (38), 12 states have call predecessors, (38), 16 states have call successors, (38) Word has length 2395 [2023-12-25 06:43:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:43:47,661 INFO L225 Difference]: With dead ends: 214 [2023-12-25 06:43:47,661 INFO L226 Difference]: Without dead ends: 110 [2023-12-25 06:43:47,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4800 GetRequests, 4757 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=258, Invalid=1722, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 06:43:47,662 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 106 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:43:47,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 588 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 06:43:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-25 06:43:47,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-25 06:43:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 68 states have (on average 1.161764705882353) internal successors, (79), 71 states have internal predecessors, (79), 11 states have call successors, (11), 7 states have call predecessors, (11), 30 states have return successors, (43), 31 states have call predecessors, (43), 11 states have call successors, (43) [2023-12-25 06:43:47,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2023-12-25 06:43:47,669 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 2395 [2023-12-25 06:43:47,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:43:47,670 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2023-12-25 06:43:47,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 27 states have internal predecessors, (90), 16 states have call successors, (36), 8 states have call predecessors, (36), 10 states have return successors, (38), 12 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-25 06:43:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2023-12-25 06:43:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3167 [2023-12-25 06:43:47,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:43:47,714 INFO L195 NwaCegarLoop]: trace histogram [504, 504, 432, 432, 432, 84, 84, 72, 72, 72, 72, 72, 72, 72, 15, 15, 12, 12, 12, 12, 12, 12, 12, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:43:47,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-25 06:43:47,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:43:47,936 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:43:47,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:43:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1073813148, now seen corresponding path program 3 times [2023-12-25 06:43:47,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:43:47,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055402897] [2023-12-25 06:43:47,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:43:47,939 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 [2023-12-25 06:43:47,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:43:47,940 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:43:47,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-25 06:43:49,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-25 06:43:49,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:43:49,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 06:43:49,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:43:49,108 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 7 [2023-12-25 06:43:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 622452 backedges. 50 proven. 3 refuted. 0 times theorem prover too weak. 622399 trivial. 0 not checked. [2023-12-25 06:43:49,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:44:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 622452 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 622398 trivial. 0 not checked. [2023-12-25 06:44:01,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:44:01,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055402897] [2023-12-25 06:44:01,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055402897] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:44:01,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:44:01,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-12-25 06:44:01,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137070528] [2023-12-25 06:44:01,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:44:01,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:44:01,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:44:01,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:44:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:44:01,737 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 8 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-25 06:44:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:44:02,239 INFO L93 Difference]: Finished difference Result 202 states and 244 transitions. [2023-12-25 06:44:02,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:44:02,239 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 8 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 8 states have call successors, (18) Word has length 3166 [2023-12-25 06:44:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:44:02,241 INFO L225 Difference]: With dead ends: 202 [2023-12-25 06:44:02,241 INFO L226 Difference]: Without dead ends: 96 [2023-12-25 06:44:02,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6335 GetRequests, 6315 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2023-12-25 06:44:02,242 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 44 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:44:02,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 204 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:44:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-25 06:44:02,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-25 06:44:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 59 states have (on average 1.152542372881356) internal successors, (68), 63 states have internal predecessors, (68), 10 states have call successors, (10), 6 states have call predecessors, (10), 26 states have return successors, (31), 26 states have call predecessors, (31), 10 states have call successors, (31) [2023-12-25 06:44:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2023-12-25 06:44:02,246 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 3166 [2023-12-25 06:44:02,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:44:02,247 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2023-12-25 06:44:02,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 8 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-25 06:44:02,247 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2023-12-25 06:44:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6284 [2023-12-25 06:44:02,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:44:02,512 INFO L195 NwaCegarLoop]: trace histogram [1008, 1008, 864, 864, 864, 168, 168, 144, 144, 144, 144, 144, 144, 144, 30, 30, 24, 24, 24, 24, 24, 24, 24, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:44:02,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-25 06:44:02,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:44:02,716 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:44:02,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:44:02,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1555542815, now seen corresponding path program 7 times [2023-12-25 06:44:02,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:44:02,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238706546] [2023-12-25 06:44:02,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:44:02,722 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 [2023-12-25 06:44:02,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:44:02,723 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) [2023-12-25 06:44:02,724 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 [2023-12-25 06:44:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:44:22,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 17541 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-25 06:44:22,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:44:22,478 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 7 [2023-12-25 06:44:22,486 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 7 [2023-12-25 06:44:22,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:44:22,555 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 7 [2023-12-25 06:44:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2492718 backedges. 693249 proven. 1460 refuted. 0 times theorem prover too weak. 1798009 trivial. 0 not checked. [2023-12-25 06:44:23,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:44:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2492718 backedges. 10 proven. 829 refuted. 0 times theorem prover too weak. 2491879 trivial. 0 not checked. [2023-12-25 06:44:49,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:44:49,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238706546] [2023-12-25 06:44:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238706546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:44:49,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:44:49,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 38 [2023-12-25 06:44:49,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461737191] [2023-12-25 06:44:49,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:44:49,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-25 06:44:49,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:44:49,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-25 06:44:49,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 06:44:49,825 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand has 38 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 31 states have internal predecessors, (95), 18 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (41), 15 states have call predecessors, (41), 18 states have call successors, (41) [2023-12-25 06:44:51,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:44:51,699 INFO L93 Difference]: Finished difference Result 190 states and 223 transitions. [2023-12-25 06:44:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:44:51,699 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 31 states have internal predecessors, (95), 18 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (41), 15 states have call predecessors, (41), 18 states have call successors, (41) Word has length 6283 [2023-12-25 06:44:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:44:51,700 INFO L225 Difference]: With dead ends: 190 [2023-12-25 06:44:51,700 INFO L226 Difference]: Without dead ends: 98 [2023-12-25 06:44:51,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12577 GetRequests, 12528 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=316, Invalid=2234, Unknown=0, NotChecked=0, Total=2550 [2023-12-25 06:44:51,702 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 111 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:44:51,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 710 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 06:44:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-25 06:44:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-12-25 06:44:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 60 states have (on average 1.15) internal successors, (69), 64 states have internal predecessors, (69), 10 states have call successors, (10), 6 states have call predecessors, (10), 27 states have return successors, (32), 27 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-25 06:44:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2023-12-25 06:44:51,707 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 6283 [2023-12-25 06:44:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:44:51,707 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2023-12-25 06:44:51,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 31 states have internal predecessors, (95), 18 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (41), 15 states have call predecessors, (41), 18 states have call successors, (41) [2023-12-25 06:44:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2023-12-25 06:44:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7826 [2023-12-25 06:44:52,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:44:52,027 INFO L195 NwaCegarLoop]: trace histogram [1260, 1260, 1080, 1080, 1080, 210, 210, 180, 180, 180, 180, 180, 180, 180, 36, 36, 30, 30, 30, 30, 30, 30, 30, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:44:52,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-25 06:44:52,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:44:52,241 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:44:52,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:44:52,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1591229153, now seen corresponding path program 8 times [2023-12-25 06:44:52,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:44:52,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132237510] [2023-12-25 06:44:52,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:44:52,247 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 [2023-12-25 06:44:52,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:44:52,248 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:44:52,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-25 06:45:22,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:45:22,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:45:22,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 21765 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-25 06:45:22,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:45:22,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:45:22,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:45:22,850 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 7 [2023-12-25 06:45:22,885 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 7 [2023-12-25 06:45:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3895497 backedges. 1083124 proven. 2416 refuted. 0 times theorem prover too weak. 2809957 trivial. 0 not checked. [2023-12-25 06:45:23,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:45:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3895497 backedges. 10 proven. 1216 refuted. 0 times theorem prover too weak. 3894271 trivial. 0 not checked. [2023-12-25 06:45:51,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:45:51,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132237510] [2023-12-25 06:45:51,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132237510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:45:51,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:45:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26] total 43 [2023-12-25 06:45:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374442475] [2023-12-25 06:45:51,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:45:51,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-25 06:45:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:45:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-25 06:45:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 06:45:51,492 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 43 states, 31 states have (on average 3.225806451612903) internal successors, (100), 35 states have internal predecessors, (100), 20 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (44), 18 states have call predecessors, (44), 20 states have call successors, (44) [2023-12-25 06:45:54,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:45:54,133 INFO L93 Difference]: Finished difference Result 194 states and 227 transitions. [2023-12-25 06:45:54,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 06:45:54,133 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 31 states have (on average 3.225806451612903) internal successors, (100), 35 states have internal predecessors, (100), 20 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (44), 18 states have call predecessors, (44), 20 states have call successors, (44) Word has length 7825 [2023-12-25 06:45:54,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:45:54,135 INFO L225 Difference]: With dead ends: 194 [2023-12-25 06:45:54,135 INFO L226 Difference]: Without dead ends: 100 [2023-12-25 06:45:54,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15662 GetRequests, 15607 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=378, Invalid=2814, Unknown=0, NotChecked=0, Total=3192 [2023-12-25 06:45:54,136 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 122 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:45:54,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 763 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 06:45:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-25 06:45:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-25 06:45:54,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 65 states have internal predecessors, (70), 10 states have call successors, (10), 6 states have call predecessors, (10), 28 states have return successors, (33), 28 states have call predecessors, (33), 10 states have call successors, (33) [2023-12-25 06:45:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2023-12-25 06:45:54,141 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 7825 [2023-12-25 06:45:54,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:45:54,142 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2023-12-25 06:45:54,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 31 states have (on average 3.225806451612903) internal successors, (100), 35 states have internal predecessors, (100), 20 states have call successors, (40), 10 states have call predecessors, (40), 14 states have return successors, (44), 18 states have call predecessors, (44), 20 states have call successors, (44) [2023-12-25 06:45:54,143 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2023-12-25 06:45:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9368 [2023-12-25 06:45:54,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:45:54,633 INFO L195 NwaCegarLoop]: trace histogram [1512, 1512, 1296, 1296, 1296, 252, 252, 216, 216, 216, 216, 216, 216, 216, 42, 42, 36, 36, 36, 36, 36, 36, 36, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:45:54,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-25 06:45:54,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:45:54,851 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:45:54,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:45:54,852 INFO L85 PathProgramCache]: Analyzing trace with hash -966416799, now seen corresponding path program 9 times [2023-12-25 06:45:54,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:45:54,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27251896] [2023-12-25 06:45:54,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:45:54,859 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 [2023-12-25 06:45:54,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:45:54,861 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) [2023-12-25 06:45:54,862 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 [2023-12-25 06:45:57,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:45:57,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:45:57,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-25 06:45:57,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:45:57,900 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 7 [2023-12-25 06:45:57,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-25 06:45:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5610144 backedges. 108 proven. 8 refuted. 0 times theorem prover too weak. 5610028 trivial. 0 not checked. [2023-12-25 06:45:58,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:46:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5610144 backedges. 108 proven. 15 refuted. 0 times theorem prover too weak. 5610021 trivial. 0 not checked. [2023-12-25 06:46:35,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:46:35,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27251896] [2023-12-25 06:46:35,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27251896] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:46:35,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:46:35,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 23 [2023-12-25 06:46:35,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755814432] [2023-12-25 06:46:35,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:46:35,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:46:35,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:46:35,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:46:35,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:46:35,539 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 23 states, 17 states have (on average 3.588235294117647) internal successors, (61), 19 states have internal predecessors, (61), 11 states have call successors, (21), 6 states have call predecessors, (21), 8 states have return successors, (22), 9 states have call predecessors, (22), 11 states have call successors, (22) [2023-12-25 06:46:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:46:36,417 INFO L93 Difference]: Finished difference Result 198 states and 228 transitions. [2023-12-25 06:46:36,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:46:36,418 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 3.588235294117647) internal successors, (61), 19 states have internal predecessors, (61), 11 states have call successors, (21), 6 states have call predecessors, (21), 8 states have return successors, (22), 9 states have call predecessors, (22), 11 states have call successors, (22) Word has length 9367 [2023-12-25 06:46:36,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:46:36,420 INFO L225 Difference]: With dead ends: 198 [2023-12-25 06:46:36,420 INFO L226 Difference]: Without dead ends: 102 [2023-12-25 06:46:36,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18737 GetRequests, 18711 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:46:36,421 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 26 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:46:36,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 337 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:46:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-25 06:46:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-25 06:46:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 66 states have internal predecessors, (71), 10 states have call successors, (10), 6 states have call predecessors, (10), 29 states have return successors, (34), 29 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-25 06:46:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2023-12-25 06:46:36,426 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 9367 [2023-12-25 06:46:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:46:36,427 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2023-12-25 06:46:36,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 3.588235294117647) internal successors, (61), 19 states have internal predecessors, (61), 11 states have call successors, (21), 6 states have call predecessors, (21), 8 states have return successors, (22), 9 states have call predecessors, (22), 11 states have call successors, (22) [2023-12-25 06:46:36,428 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2023-12-25 06:46:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14027 [2023-12-25 06:46:37,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:46:37,471 INFO L195 NwaCegarLoop]: trace histogram [2268, 2268, 1944, 1944, 1944, 378, 378, 324, 324, 324, 324, 324, 324, 324, 63, 63, 54, 54, 54, 54, 54, 54, 54, 12, 12, 9, 9, 9, 9, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:46:37,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-25 06:46:37,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:46:37,680 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:46:37,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:46:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash -58152436, now seen corresponding path program 10 times [2023-12-25 06:46:37,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:46:37,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114416135] [2023-12-25 06:46:37,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:46:37,691 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 [2023-12-25 06:46:37,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:46:37,693 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:46:37,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-25 06:50:27,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:50:27,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:50:28,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 38829 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-25 06:50:28,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:50:28,342 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 7 [2023-12-25 06:50:28,348 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 7 [2023-12-25 06:50:28,378 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 7 [2023-12-25 06:50:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12626208 backedges. 5614750 proven. 4430 refuted. 0 times theorem prover too weak. 7007028 trivial. 0 not checked. [2023-12-25 06:50:29,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:51:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12626208 backedges. 6 proven. 221 refuted. 0 times theorem prover too weak. 12625981 trivial. 0 not checked. [2023-12-25 06:51:25,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:51:25,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114416135] [2023-12-25 06:51:25,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114416135] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:51:25,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:51:25,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 32 [2023-12-25 06:51:25,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112697694] [2023-12-25 06:51:25,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:51:25,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-25 06:51:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:51:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-25 06:51:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:51:25,231 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 32 states, 23 states have (on average 3.869565217391304) internal successors, (89), 26 states have internal predecessors, (89), 15 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) [2023-12-25 06:51:26,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:51:26,750 INFO L93 Difference]: Finished difference Result 202 states and 232 transitions. [2023-12-25 06:51:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:51:26,750 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 23 states have (on average 3.869565217391304) internal successors, (89), 26 states have internal predecessors, (89), 15 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) Word has length 14026 [2023-12-25 06:51:26,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:51:26,754 INFO L225 Difference]: With dead ends: 202 [2023-12-25 06:51:26,754 INFO L226 Difference]: Without dead ends: 104 [2023-12-25 06:51:26,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28061 GetRequests, 28020 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=246, Invalid=1560, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 06:51:26,755 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 75 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:51:26,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 439 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 06:51:26,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-25 06:51:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-25 06:51:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 67 states have internal predecessors, (72), 10 states have call successors, (10), 6 states have call predecessors, (10), 30 states have return successors, (35), 30 states have call predecessors, (35), 10 states have call successors, (35) [2023-12-25 06:51:26,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2023-12-25 06:51:26,761 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 14026 [2023-12-25 06:51:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:51:26,765 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2023-12-25 06:51:26,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 23 states have (on average 3.869565217391304) internal successors, (89), 26 states have internal predecessors, (89), 15 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) [2023-12-25 06:51:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2023-12-25 06:51:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18686 [2023-12-25 06:51:29,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:51:29,162 INFO L195 NwaCegarLoop]: trace histogram [3024, 3024, 2592, 2592, 2592, 504, 504, 432, 432, 432, 432, 432, 432, 432, 84, 84, 72, 72, 72, 72, 72, 72, 72, 15, 15, 12, 12, 12, 12, 12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:51:29,388 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forcibly destroying the process [2023-12-25 06:51:29,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 137 [2023-12-25 06:51:29,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:51:29,486 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:51:29,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:51:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 712452533, now seen corresponding path program 11 times [2023-12-25 06:51:29,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:51:29,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096123569] [2023-12-25 06:51:29,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:51:29,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:51:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:51:29,508 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) [2023-12-25 06:51:29,531 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 Received shutdown request... [2023-12-25 06:56:06,673 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:56:06,712 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:56:07,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-25 06:56:07,914 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Forcibly destroying the process [2023-12-25 06:56:07,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-25 06:56:07,961 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:56:07,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:56:07,962 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 18686 with TraceHistMax 3024,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1096123569] and IpTcStrategyModuleCvc4 [414072043]. [2023-12-25 06:56:07,964 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 137 [2023-12-25 06:56:07,967 INFO L445 BasicCegarLoop]: Path program histogram: [11, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-25 06:56:07,974 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:56:07,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:56:07 BoogieIcfgContainer [2023-12-25 06:56:07,977 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:56:07,977 INFO L158 Benchmark]: Toolchain (without parser) took 849453.54ms. Allocated memory was 285.2MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 240.1MB in the beginning and 760.5MB in the end (delta: -520.4MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-25 06:56:07,977 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 210.8MB. Free memory is still 161.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:56:07,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.91ms. Allocated memory is still 285.2MB. Free memory was 240.1MB in the beginning and 228.2MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 06:56:07,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.93ms. Allocated memory is still 285.2MB. Free memory was 228.2MB in the beginning and 226.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:56:07,978 INFO L158 Benchmark]: Boogie Preprocessor took 46.36ms. Allocated memory is still 285.2MB. Free memory was 226.6MB in the beginning and 223.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:56:07,978 INFO L158 Benchmark]: RCFGBuilder took 472.16ms. Allocated memory is still 285.2MB. Free memory was 223.4MB in the beginning and 201.0MB in the end (delta: 22.4MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-25 06:56:07,978 INFO L158 Benchmark]: TraceAbstraction took 848672.49ms. Allocated memory was 285.2MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 200.4MB in the beginning and 760.5MB in the end (delta: -560.2MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-25 06:56:07,979 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 210.8MB. Free memory is still 161.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 202.91ms. Allocated memory is still 285.2MB. Free memory was 240.1MB in the beginning and 228.2MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.93ms. Allocated memory is still 285.2MB. Free memory was 228.2MB in the beginning and 226.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.36ms. Allocated memory is still 285.2MB. Free memory was 226.6MB in the beginning and 223.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 472.16ms. Allocated memory is still 285.2MB. Free memory was 223.4MB in the beginning and 201.0MB in the end (delta: 22.4MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 848672.49ms. Allocated memory was 285.2MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 200.4MB in the beginning and 760.5MB in the end (delta: -560.2MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 132). Cancelled while NwaCegarLoop was analyzing trace of length 18686 with TraceHistMax 3024,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1096123569] and IpTcStrategyModuleCvc4 [414072043]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 848.6s, OverallIterations: 31, TraceHistogramMax: 3024, PathProgramHistogramMax: 11, EmptinessCheckTime: 4.7s, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1767 SdHoareTripleChecker+Valid, 16.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1701 mSDsluCounter, 12557 SdHoareTripleChecker+Invalid, 14.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11341 mSDsCounter, 976 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12524 IncrementalHoareTripleChecker+Invalid, 13500 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 976 mSolverCounterUnsat, 1216 mSDtfsCounter, 12524 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99519 GetRequests, 98708 SyntacticMatches, 0 SemanticMatches, 811 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5073 ImplicationChecksByTransitivity, 25.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=25, InterpolantAutomatonStates: 380, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 30 MinimizatonAttempts, 88 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.7s SsaConstructionTime, 287.1s SatisfiabilityAnalysisTime, 228.4s InterpolantComputationTime, 50375 NumberOfCodeBlocks, 35563 NumberOfCodeBlocksAsserted, 116 NumberOfCheckSat, 99269 ConstructedInterpolants, 4 QuantifiedInterpolants, 113686 SizeOfPredicates, 432 NumberOfNonLiveVariables, 102172 ConjunctsInSsa, 1327 ConjunctsInUnsatCore, 52 InterpolantComputations, 8 PerfectInterpolantSequences, 51980416/51994343 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown