/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 12:57:39,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 12:57:39,982 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 12:57:39,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 12:57:39,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 12:57:40,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 12:57:40,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 12:57:40,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 12:57:40,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 12:57:40,016 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 12:57:40,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 12:57:40,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 12:57:40,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 12:57:40,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 12:57:40,018 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 12:57:40,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 12:57:40,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 12:57:40,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 12:57:40,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 12:57:40,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 12:57:40,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 12:57:40,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 12:57:40,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 12:57:40,020 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 12:57:40,020 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 12:57:40,020 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 12:57:40,020 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 12:57:40,021 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 12:57:40,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 12:57:40,021 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 12:57:40,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 12:57:40,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 12:57:40,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 12:57:40,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 12:57:40,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 12:57:40,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 12:57:40,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 12:57:40,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 12:57:40,023 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 12:57:40,023 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 12:57:40,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 12:57:40,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 12:57:40,024 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 12:57:40,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 12:57:40,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 12:57:40,024 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 12:57:40,024 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 12:57:40,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 12:57:40,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 12:57:40,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 12:57:40,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 12:57:40,205 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 12:57:40,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i [2023-12-24 12:57:41,285 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 12:57:41,417 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 12:57:41,418 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i [2023-12-24 12:57:41,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af6e1b31/badcd87eff254f0986f22348302e7fdb/FLAG3e2605cb4 [2023-12-24 12:57:41,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af6e1b31/badcd87eff254f0986f22348302e7fdb [2023-12-24 12:57:41,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 12:57:41,438 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 12:57:41,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 12:57:41,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 12:57:41,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 12:57:41,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140f6249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41, skipping insertion in model container [2023-12-24 12:57:41,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,462 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 12:57:41,556 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i[916,929] [2023-12-24 12:57:41,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 12:57:41,604 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 12:57:41,613 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i[916,929] [2023-12-24 12:57:41,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 12:57:41,655 INFO L206 MainTranslator]: Completed translation [2023-12-24 12:57:41,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41 WrapperNode [2023-12-24 12:57:41,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 12:57:41,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 12:57:41,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 12:57:41,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 12:57:41,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,703 INFO L138 Inliner]: procedures = 30, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 451 [2023-12-24 12:57:41,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 12:57:41,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 12:57:41,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 12:57:41,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 12:57:41,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,739 INFO L175 MemorySlicer]: Split 124 memory accesses to 6 slices as follows [2, 8, 43, 27, 26, 18]. 35 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 3, 4, 2, 2]. The 15 writes are split as follows [0, 1, 4, 6, 2, 2]. [2023-12-24 12:57:41,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 12:57:41,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 12:57:41,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 12:57:41,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 12:57:41,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (1/1) ... [2023-12-24 12:57:41,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 12:57:41,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 12:57:41,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 12:57:41,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 12:57:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 12:57:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 12:57:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 12:57:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 12:57:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 12:57:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 12:57:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 12:57:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 12:57:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 12:57:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 12:57:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 12:57:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 12:57:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 12:57:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 12:57:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 12:57:41,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 12:57:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 12:57:41,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 12:57:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 12:57:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 12:57:41,961 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 12:57:41,962 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 12:57:42,529 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 12:57:42,566 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 12:57:42,566 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 12:57:42,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 12:57:42 BoogieIcfgContainer [2023-12-24 12:57:42,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 12:57:42,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 12:57:42,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 12:57:42,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 12:57:42,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 12:57:41" (1/3) ... [2023-12-24 12:57:42,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9d16af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 12:57:42, skipping insertion in model container [2023-12-24 12:57:42,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:41" (2/3) ... [2023-12-24 12:57:42,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9d16af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 12:57:42, skipping insertion in model container [2023-12-24 12:57:42,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 12:57:42" (3/3) ... [2023-12-24 12:57:42,573 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-19.i [2023-12-24 12:57:42,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 12:57:42,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 12:57:42,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 12:57:42,639 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;@77ea05d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 12:57:42,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 12:57:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 71 states have internal predecessors, (100), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 12:57:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 12:57:42,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:42,656 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:57:42,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:42,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash -31477708, now seen corresponding path program 1 times [2023-12-24 12:57:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:42,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865628341] [2023-12-24 12:57:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:42,674 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 [2023-12-24 12:57:42,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:42,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:57:42,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 12:57:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:42,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 12:57:42,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-24 12:57:42,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:42,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865628341] [2023-12-24 12:57:42,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865628341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:42,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:42,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 12:57:42,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016592053] [2023-12-24 12:57:42,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:42,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 12:57:42,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:43,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 12:57:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 12:57:43,018 INFO L87 Difference]: Start difference. First operand has 90 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 71 states have internal predecessors, (100), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 12:57:43,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:43,075 INFO L93 Difference]: Finished difference Result 177 states and 283 transitions. [2023-12-24 12:57:43,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 12:57:43,077 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 124 [2023-12-24 12:57:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:43,083 INFO L225 Difference]: With dead ends: 177 [2023-12-24 12:57:43,083 INFO L226 Difference]: Without dead ends: 88 [2023-12-24 12:57:43,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 12:57:43,090 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 12:57:43,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 12:57:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-24 12:57:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-24 12:57:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 69 states have internal predecessors, (93), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 12:57:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 127 transitions. [2023-12-24 12:57:43,139 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 127 transitions. Word has length 124 [2023-12-24 12:57:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:43,139 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 127 transitions. [2023-12-24 12:57:43,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 12:57:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 127 transitions. [2023-12-24 12:57:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 12:57:43,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:43,145 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:57:43,153 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 (2)] Forceful destruction successful, exit code 0 [2023-12-24 12:57:43,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:43,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:43,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:43,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1077529134, now seen corresponding path program 1 times [2023-12-24 12:57:43,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:43,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3756897] [2023-12-24 12:57:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:43,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:43,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:43,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:57:43,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 12:57:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:43,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:57:43,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:43,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 12:57:43,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-12-24 12:57:43,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 30 [2023-12-24 12:57:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:57:43,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:43,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:43,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3756897] [2023-12-24 12:57:43,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3756897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:43,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:43,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 12:57:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450754432] [2023-12-24 12:57:43,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:43,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:57:43,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:43,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:57:43,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:57:43,752 INFO L87 Difference]: Start difference. First operand 88 states and 127 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:57:44,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:44,372 INFO L93 Difference]: Finished difference Result 277 states and 396 transitions. [2023-12-24 12:57:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 12:57:44,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 124 [2023-12-24 12:57:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:44,374 INFO L225 Difference]: With dead ends: 277 [2023-12-24 12:57:44,375 INFO L226 Difference]: Without dead ends: 190 [2023-12-24 12:57:44,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:57:44,376 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 219 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 12:57:44,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 754 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 12:57:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-24 12:57:44,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2023-12-24 12:57:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 120 states have (on average 1.3166666666666667) internal successors, (158), 121 states have internal predecessors, (158), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:57:44,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 218 transitions. [2023-12-24 12:57:44,389 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 218 transitions. Word has length 124 [2023-12-24 12:57:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:44,390 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 218 transitions. [2023-12-24 12:57:44,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:57:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 218 transitions. [2023-12-24 12:57:44,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 12:57:44,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:44,391 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:57:44,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 12:57:44,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:44,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:44,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:44,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2088646384, now seen corresponding path program 1 times [2023-12-24 12:57:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:44,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733786999] [2023-12-24 12:57:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:44,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:44,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:44,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:57:44,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 12:57:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:44,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:57:44,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-12-24 12:57:45,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:57:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:57:45,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:45,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733786999] [2023-12-24 12:57:45,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733786999] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:57:45,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:57:45,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 12:57:45,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027838441] [2023-12-24 12:57:45,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:45,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:57:45,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:45,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:57:45,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:57:45,101 INFO L87 Difference]: Start difference. First operand 153 states and 218 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:57:45,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:45,261 INFO L93 Difference]: Finished difference Result 394 states and 558 transitions. [2023-12-24 12:57:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:57:45,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 124 [2023-12-24 12:57:45,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:45,264 INFO L225 Difference]: With dead ends: 394 [2023-12-24 12:57:45,264 INFO L226 Difference]: Without dead ends: 242 [2023-12-24 12:57:45,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:57:45,266 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 138 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:57:45,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 493 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:57:45,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-24 12:57:45,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 156. [2023-12-24 12:57:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 123 states have (on average 1.3170731707317074) internal successors, (162), 124 states have internal predecessors, (162), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:57:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 222 transitions. [2023-12-24 12:57:45,284 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 222 transitions. Word has length 124 [2023-12-24 12:57:45,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:45,285 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 222 transitions. [2023-12-24 12:57:45,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:57:45,285 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 222 transitions. [2023-12-24 12:57:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 12:57:45,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:45,286 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:57:45,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 12:57:45,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:45,496 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:45,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:45,497 INFO L85 PathProgramCache]: Analyzing trace with hash 301930728, now seen corresponding path program 1 times [2023-12-24 12:57:45,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:45,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625146795] [2023-12-24 12:57:45,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:45,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:45,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:45,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:57:45,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 12:57:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:45,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-24 12:57:45,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:45,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-24 12:57:47,559 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 21 treesize of output 17 [2023-12-24 12:57:48,049 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 76 treesize of output 57 [2023-12-24 12:57:48,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:48,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 58 [2023-12-24 12:57:48,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2023-12-24 12:57:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 377 proven. 66 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-24 12:57:48,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:57:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:57:50,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:50,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625146795] [2023-12-24 12:57:50,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625146795] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:57:50,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:57:50,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [27] total 37 [2023-12-24 12:57:50,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393545236] [2023-12-24 12:57:50,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:50,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 12:57:50,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:50,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 12:57:50,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1182, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 12:57:50,299 INFO L87 Difference]: Start difference. First operand 156 states and 222 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:57:57,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:57,044 INFO L93 Difference]: Finished difference Result 586 states and 820 transitions. [2023-12-24 12:57:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-24 12:57:57,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 125 [2023-12-24 12:57:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:57,049 INFO L225 Difference]: With dead ends: 586 [2023-12-24 12:57:57,049 INFO L226 Difference]: Without dead ends: 431 [2023-12-24 12:57:57,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=422, Invalid=3238, Unknown=0, NotChecked=0, Total=3660 [2023-12-24 12:57:57,051 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 717 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:57:57,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1000 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-24 12:57:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-24 12:57:57,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 199. [2023-12-24 12:57:57,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 162 states have (on average 1.3209876543209877) internal successors, (214), 164 states have internal predecessors, (214), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 12:57:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 278 transitions. [2023-12-24 12:57:57,072 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 278 transitions. Word has length 125 [2023-12-24 12:57:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:57,073 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 278 transitions. [2023-12-24 12:57:57,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:57:57,073 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 278 transitions. [2023-12-24 12:57:57,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 12:57:57,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:57,075 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:57:57,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 12:57:57,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:57,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:57,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:57,282 INFO L85 PathProgramCache]: Analyzing trace with hash 560096166, now seen corresponding path program 1 times [2023-12-24 12:57:57,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:57,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008252939] [2023-12-24 12:57:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:57,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:57,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:57,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:57:57,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 12:57:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:57,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 12:57:57,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:57,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-24 12:57:59,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 12:57:59,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 12:57:59,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:59,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 52 [2023-12-24 12:57:59,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 34 [2023-12-24 12:57:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 377 proven. 66 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-24 12:57:59,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:00,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:00,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008252939] [2023-12-24 12:58:00,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008252939] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:00,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:00,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [26] total 31 [2023-12-24 12:58:00,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860030536] [2023-12-24 12:58:00,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:00,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:58:00,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:00,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:58:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-12-24 12:58:00,595 INFO L87 Difference]: Start difference. First operand 199 states and 278 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:01,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:01,717 INFO L93 Difference]: Finished difference Result 474 states and 658 transitions. [2023-12-24 12:58:01,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:58:01,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 125 [2023-12-24 12:58:01,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:01,720 INFO L225 Difference]: With dead ends: 474 [2023-12-24 12:58:01,720 INFO L226 Difference]: Without dead ends: 276 [2023-12-24 12:58:01,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 12:58:01,721 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 173 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:01,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 506 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 12:58:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-24 12:58:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 219. [2023-12-24 12:58:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 173 states have (on average 1.283236994219653) internal successors, (222), 175 states have internal predecessors, (222), 39 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 12:58:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 300 transitions. [2023-12-24 12:58:01,738 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 300 transitions. Word has length 125 [2023-12-24 12:58:01,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:01,738 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 300 transitions. [2023-12-24 12:58:01,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:01,739 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 300 transitions. [2023-12-24 12:58:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 12:58:01,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:01,741 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:01,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:01,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:01,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:01,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash 815474119, now seen corresponding path program 1 times [2023-12-24 12:58:01,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:01,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588240918] [2023-12-24 12:58:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:01,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:01,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:01,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:01,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 12:58:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:02,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 12:58:02,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:02,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-24 12:58:03,683 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 21 treesize of output 17 [2023-12-24 12:58:04,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:04,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 33 [2023-12-24 12:58:04,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:04,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 44 [2023-12-24 12:58:04,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:04,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 36 [2023-12-24 12:58:04,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2023-12-24 12:58:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 377 proven. 66 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-24 12:58:04,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:06,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:06,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588240918] [2023-12-24 12:58:06,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588240918] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:06,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:06,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [27] total 33 [2023-12-24 12:58:06,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903196723] [2023-12-24 12:58:06,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:06,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 12:58:06,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:06,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 12:58:06,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 12:58:06,142 INFO L87 Difference]: Start difference. First operand 219 states and 300 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:07,985 INFO L93 Difference]: Finished difference Result 551 states and 758 transitions. [2023-12-24 12:58:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:58:07,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2023-12-24 12:58:07,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:07,988 INFO L225 Difference]: With dead ends: 551 [2023-12-24 12:58:07,988 INFO L226 Difference]: Without dead ends: 333 [2023-12-24 12:58:07,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 12:58:07,990 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 206 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:07,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 550 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 12:58:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-24 12:58:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 271. [2023-12-24 12:58:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 215 states have (on average 1.2883720930232558) internal successors, (277), 218 states have internal predecessors, (277), 48 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:58:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 373 transitions. [2023-12-24 12:58:08,015 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 373 transitions. Word has length 126 [2023-12-24 12:58:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:08,015 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 373 transitions. [2023-12-24 12:58:08,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 373 transitions. [2023-12-24 12:58:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 12:58:08,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:08,016 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:08,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:08,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:08,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:08,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:08,226 INFO L85 PathProgramCache]: Analyzing trace with hash -205594235, now seen corresponding path program 1 times [2023-12-24 12:58:08,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:08,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862483173] [2023-12-24 12:58:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:08,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:08,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:08,229 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:08,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 12:58:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:08,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 12:58:08,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:08,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-24 12:58:09,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-12-24 12:58:10,740 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 61 treesize of output 48 [2023-12-24 12:58:11,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:11,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 44 [2023-12-24 12:58:11,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2023-12-24 12:58:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 377 proven. 66 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-24 12:58:11,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:12,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:12,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862483173] [2023-12-24 12:58:12,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862483173] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:12,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:12,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [27] total 37 [2023-12-24 12:58:12,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801985722] [2023-12-24 12:58:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:12,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 12:58:12,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 12:58:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 12:58:12,649 INFO L87 Difference]: Start difference. First operand 271 states and 373 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:18,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:18,534 INFO L93 Difference]: Finished difference Result 737 states and 1007 transitions. [2023-12-24 12:58:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 12:58:18,535 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2023-12-24 12:58:18,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:18,537 INFO L225 Difference]: With dead ends: 737 [2023-12-24 12:58:18,537 INFO L226 Difference]: Without dead ends: 467 [2023-12-24 12:58:18,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=359, Invalid=2947, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 12:58:18,539 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 662 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:18,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1390 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-24 12:58:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-24 12:58:18,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 275. [2023-12-24 12:58:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 218 states have (on average 1.275229357798165) internal successors, (278), 221 states have internal predecessors, (278), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:58:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 374 transitions. [2023-12-24 12:58:18,562 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 374 transitions. Word has length 126 [2023-12-24 12:58:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:18,563 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 374 transitions. [2023-12-24 12:58:18,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 374 transitions. [2023-12-24 12:58:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 12:58:18,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:18,564 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:18,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-24 12:58:18,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:18,773 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:18,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:18,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1144510573, now seen corresponding path program 1 times [2023-12-24 12:58:18,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:18,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629734211] [2023-12-24 12:58:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:18,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:18,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:18,774 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:18,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 12:58:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:18,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 12:58:18,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:19,038 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 21 treesize of output 17 [2023-12-24 12:58:19,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-24 12:58:19,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-24 12:58:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 12:58:19,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:19,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:19,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629734211] [2023-12-24 12:58:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629734211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:19,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:19,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 12:58:19,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679403674] [2023-12-24 12:58:19,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:19,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 12:58:19,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:19,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 12:58:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:58:19,153 INFO L87 Difference]: Start difference. First operand 275 states and 374 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 12:58:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:20,832 INFO L93 Difference]: Finished difference Result 676 states and 908 transitions. [2023-12-24 12:58:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 12:58:20,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 127 [2023-12-24 12:58:20,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:20,834 INFO L225 Difference]: With dead ends: 676 [2023-12-24 12:58:20,834 INFO L226 Difference]: Without dead ends: 402 [2023-12-24 12:58:20,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2023-12-24 12:58:20,835 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 303 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:20,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1204 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 12:58:20,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-24 12:58:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 282. [2023-12-24 12:58:20,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 224 states have (on average 1.2767857142857142) internal successors, (286), 227 states have internal predecessors, (286), 48 states have call successors, (48), 9 states have call predecessors, (48), 9 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:58:20,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 382 transitions. [2023-12-24 12:58:20,854 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 382 transitions. Word has length 127 [2023-12-24 12:58:20,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:20,854 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 382 transitions. [2023-12-24 12:58:20,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 12:58:20,855 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 382 transitions. [2023-12-24 12:58:20,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 12:58:20,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:20,855 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:20,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 12:58:21,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:21,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:21,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2145820690, now seen corresponding path program 1 times [2023-12-24 12:58:21,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:21,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455970837] [2023-12-24 12:58:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:21,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:21,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:21,064 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:21,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 12:58:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:21,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 12:58:21,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:21,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-24 12:58:23,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 12:58:23,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 12:58:23,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:23,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 52 [2023-12-24 12:58:23,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:23,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 31 [2023-12-24 12:58:23,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2023-12-24 12:58:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 377 proven. 66 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-24 12:58:23,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:24,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:24,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455970837] [2023-12-24 12:58:24,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455970837] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:24,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:24,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 30 [2023-12-24 12:58:24,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410225937] [2023-12-24 12:58:24,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:24,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:58:24,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:24,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:58:24,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2023-12-24 12:58:24,575 INFO L87 Difference]: Start difference. First operand 282 states and 382 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:25,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:25,234 INFO L93 Difference]: Finished difference Result 574 states and 775 transitions. [2023-12-24 12:58:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:58:25,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 127 [2023-12-24 12:58:25,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:25,237 INFO L225 Difference]: With dead ends: 574 [2023-12-24 12:58:25,237 INFO L226 Difference]: Without dead ends: 293 [2023-12-24 12:58:25,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2023-12-24 12:58:25,238 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 158 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:25,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 320 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 12:58:25,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-24 12:58:25,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 268. [2023-12-24 12:58:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 210 states have (on average 1.2571428571428571) internal successors, (264), 213 states have internal predecessors, (264), 48 states have call successors, (48), 9 states have call predecessors, (48), 9 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 12:58:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 360 transitions. [2023-12-24 12:58:25,264 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 360 transitions. Word has length 127 [2023-12-24 12:58:25,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:25,265 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 360 transitions. [2023-12-24 12:58:25,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:25,265 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 360 transitions. [2023-12-24 12:58:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 12:58:25,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:25,271 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:25,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:25,478 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:25,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1850386739, now seen corresponding path program 1 times [2023-12-24 12:58:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618609898] [2023-12-24 12:58:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:25,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:25,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:25,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:25,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 12:58:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:25,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 12:58:25,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:25,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-24 12:58:26,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-24 12:58:26,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 12:58:27,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:27,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 46 [2023-12-24 12:58:27,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:27,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 30 [2023-12-24 12:58:27,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2023-12-24 12:58:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 266 proven. 60 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-24 12:58:27,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:28,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:28,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618609898] [2023-12-24 12:58:28,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618609898] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:28,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:28,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 26 [2023-12-24 12:58:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48612411] [2023-12-24 12:58:28,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:28,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:58:28,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:58:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2023-12-24 12:58:28,257 INFO L87 Difference]: Start difference. First operand 268 states and 360 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:28,937 INFO L93 Difference]: Finished difference Result 490 states and 655 transitions. [2023-12-24 12:58:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:58:28,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2023-12-24 12:58:28,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:28,940 INFO L225 Difference]: With dead ends: 490 [2023-12-24 12:58:28,940 INFO L226 Difference]: Without dead ends: 223 [2023-12-24 12:58:28,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2023-12-24 12:58:28,941 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 163 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:28,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 374 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 12:58:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-12-24 12:58:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 216. [2023-12-24 12:58:28,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 168 states have (on average 1.244047619047619) internal successors, (209), 170 states have internal predecessors, (209), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 12:58:28,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 287 transitions. [2023-12-24 12:58:28,953 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 287 transitions. Word has length 128 [2023-12-24 12:58:28,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:28,953 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 287 transitions. [2023-12-24 12:58:28,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 287 transitions. [2023-12-24 12:58:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 12:58:28,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:28,954 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:28,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:29,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:29,160 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:29,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:29,161 INFO L85 PathProgramCache]: Analyzing trace with hash 635703707, now seen corresponding path program 1 times [2023-12-24 12:58:29,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:29,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119615541] [2023-12-24 12:58:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:29,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:29,163 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:29,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 12:58:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:29,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 12:58:29,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:29,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 12:58:29,427 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 23 treesize of output 22 [2023-12-24 12:58:29,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 12:58:29,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 12:58:29,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-24 12:58:30,029 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 46 treesize of output 45 [2023-12-24 12:58:30,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:30,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2023-12-24 12:58:30,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:30,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 82 [2023-12-24 12:58:30,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 12:58:30,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:30,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 72 [2023-12-24 12:58:30,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:30,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 56 [2023-12-24 12:58:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 12:58:30,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:30,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:30,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119615541] [2023-12-24 12:58:30,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119615541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:30,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:30,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-24 12:58:30,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981779691] [2023-12-24 12:58:30,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:30,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 12:58:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:30,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 12:58:30,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:58:30,747 INFO L87 Difference]: Start difference. First operand 216 states and 287 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-24 12:58:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:34,465 INFO L93 Difference]: Finished difference Result 775 states and 1030 transitions. [2023-12-24 12:58:34,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 12:58:34,467 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 128 [2023-12-24 12:58:34,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:34,468 INFO L225 Difference]: With dead ends: 775 [2023-12-24 12:58:34,469 INFO L226 Difference]: Without dead ends: 560 [2023-12-24 12:58:34,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=333, Invalid=723, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 12:58:34,470 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 563 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:34,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 657 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 12:58:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-12-24 12:58:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 302. [2023-12-24 12:58:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 251 states have (on average 1.2669322709163346) internal successors, (318), 254 states have internal predecessors, (318), 41 states have call successors, (41), 9 states have call predecessors, (41), 9 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-24 12:58:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 400 transitions. [2023-12-24 12:58:34,493 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 400 transitions. Word has length 128 [2023-12-24 12:58:34,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:34,494 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 400 transitions. [2023-12-24 12:58:34,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-24 12:58:34,494 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 400 transitions. [2023-12-24 12:58:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 12:58:34,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:34,494 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:34,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:34,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:34,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:34,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1169734627, now seen corresponding path program 1 times [2023-12-24 12:58:34,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:34,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302434108] [2023-12-24 12:58:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:34,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:34,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:34,702 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:34,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 12:58:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:34,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 12:58:34,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:34,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:58:35,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 12:58:35,361 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 39 treesize of output 32 [2023-12-24 12:58:35,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:35,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 21 [2023-12-24 12:58:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 246 proven. 33 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 12:58:35,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:35,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:35,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302434108] [2023-12-24 12:58:35,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302434108] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:35,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:35,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-24 12:58:35,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151638561] [2023-12-24 12:58:35,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:35,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:58:35,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:35,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:58:35,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-12-24 12:58:35,629 INFO L87 Difference]: Start difference. First operand 302 states and 400 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:36,008 INFO L93 Difference]: Finished difference Result 775 states and 1029 transitions. [2023-12-24 12:58:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:58:36,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2023-12-24 12:58:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:36,011 INFO L225 Difference]: With dead ends: 775 [2023-12-24 12:58:36,011 INFO L226 Difference]: Without dead ends: 474 [2023-12-24 12:58:36,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-24 12:58:36,012 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 131 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:36,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 416 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 12:58:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-24 12:58:36,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 348. [2023-12-24 12:58:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 297 states have (on average 1.2828282828282829) internal successors, (381), 300 states have internal predecessors, (381), 41 states have call successors, (41), 9 states have call predecessors, (41), 9 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-24 12:58:36,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 463 transitions. [2023-12-24 12:58:36,038 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 463 transitions. Word has length 128 [2023-12-24 12:58:36,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:36,038 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 463 transitions. [2023-12-24 12:58:36,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:36,038 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 463 transitions. [2023-12-24 12:58:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 12:58:36,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:36,039 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:36,049 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 (13)] Ended with exit code 0 [2023-12-24 12:58:36,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:36,246 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:36,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash -606507047, now seen corresponding path program 1 times [2023-12-24 12:58:36,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:36,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463031797] [2023-12-24 12:58:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:36,247 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 [2023-12-24 12:58:36,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:36,248 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:36,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 12:58:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:36,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 12:58:36,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:36,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 12:58:36,536 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 24 treesize of output 23 [2023-12-24 12:58:36,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:36,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2023-12-24 12:58:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 184 proven. 42 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-24 12:58:36,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 12:58:37,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:37,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463031797] [2023-12-24 12:58:37,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463031797] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 12:58:37,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 12:58:37,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-24 12:58:37,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418950570] [2023-12-24 12:58:37,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 12:58:37,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 12:58:37,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:37,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 12:58:37,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:58:37,132 INFO L87 Difference]: Start difference. First operand 348 states and 463 transitions. Second operand has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) [2023-12-24 12:58:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:37,766 INFO L93 Difference]: Finished difference Result 737 states and 961 transitions. [2023-12-24 12:58:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 12:58:37,767 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) Word has length 129 [2023-12-24 12:58:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:37,768 INFO L225 Difference]: With dead ends: 737 [2023-12-24 12:58:37,769 INFO L226 Difference]: Without dead ends: 390 [2023-12-24 12:58:37,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-12-24 12:58:37,771 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 144 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:37,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 295 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:58:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-24 12:58:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 372. [2023-12-24 12:58:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 315 states have (on average 1.2571428571428571) internal successors, (396), 318 states have internal predecessors, (396), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-24 12:58:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 478 transitions. [2023-12-24 12:58:37,802 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 478 transitions. Word has length 129 [2023-12-24 12:58:37,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:37,802 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 478 transitions. [2023-12-24 12:58:37,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) [2023-12-24 12:58:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 478 transitions. [2023-12-24 12:58:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 12:58:37,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:37,803 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:37,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:38,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:38,010 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:38,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1999516507, now seen corresponding path program 1 times [2023-12-24 12:58:38,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:38,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256384335] [2023-12-24 12:58:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:38,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:38,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:38,012 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:38,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 12:58:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:38,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 12:58:38,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:38,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 12:58:38,341 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 37 treesize of output 17 [2023-12-24 12:58:38,660 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 37 treesize of output 17 [2023-12-24 12:58:38,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 12:58:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 134 proven. 42 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-12-24 12:58:38,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 12:58:38,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:38,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256384335] [2023-12-24 12:58:38,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256384335] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 12:58:38,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 12:58:38,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-12-24 12:58:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068617993] [2023-12-24 12:58:38,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 12:58:38,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 12:58:38,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:38,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 12:58:38,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:58:38,873 INFO L87 Difference]: Start difference. First operand 372 states and 478 transitions. Second operand has 13 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) [2023-12-24 12:58:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:39,633 INFO L93 Difference]: Finished difference Result 761 states and 973 transitions. [2023-12-24 12:58:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 12:58:39,634 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) Word has length 129 [2023-12-24 12:58:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:39,635 INFO L225 Difference]: With dead ends: 761 [2023-12-24 12:58:39,635 INFO L226 Difference]: Without dead ends: 390 [2023-12-24 12:58:39,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-12-24 12:58:39,636 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 106 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:39,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 345 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 12:58:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-24 12:58:39,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 372. [2023-12-24 12:58:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 315 states have (on average 1.2380952380952381) internal successors, (390), 318 states have internal predecessors, (390), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-24 12:58:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 472 transitions. [2023-12-24 12:58:39,661 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 472 transitions. Word has length 129 [2023-12-24 12:58:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:39,662 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 472 transitions. [2023-12-24 12:58:39,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.636363636363637) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (32), 3 states have call predecessors, (32), 5 states have call successors, (32) [2023-12-24 12:58:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 472 transitions. [2023-12-24 12:58:39,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 12:58:39,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:39,663 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:39,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:39,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:39,869 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:39,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:39,870 INFO L85 PathProgramCache]: Analyzing trace with hash 988399257, now seen corresponding path program 1 times [2023-12-24 12:58:39,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:39,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260122530] [2023-12-24 12:58:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:39,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:39,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:39,872 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:39,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 12:58:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:40,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 12:58:40,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:40,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 12:58:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:40,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:40,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:40,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260122530] [2023-12-24 12:58:40,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260122530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:40,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:40,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:58:40,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162074233] [2023-12-24 12:58:40,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:40,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:58:40,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:40,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:58:40,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:58:40,192 INFO L87 Difference]: Start difference. First operand 372 states and 472 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:40,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:40,552 INFO L93 Difference]: Finished difference Result 810 states and 1027 transitions. [2023-12-24 12:58:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:58:40,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 129 [2023-12-24 12:58:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:40,554 INFO L225 Difference]: With dead ends: 810 [2023-12-24 12:58:40,554 INFO L226 Difference]: Without dead ends: 439 [2023-12-24 12:58:40,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 12:58:40,555 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 133 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:40,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 425 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 12:58:40,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-12-24 12:58:40,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 281. [2023-12-24 12:58:40,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 239 states have (on average 1.2301255230125523) internal successors, (294), 240 states have internal predecessors, (294), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:58:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 354 transitions. [2023-12-24 12:58:40,578 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 354 transitions. Word has length 129 [2023-12-24 12:58:40,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:40,579 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 354 transitions. [2023-12-24 12:58:40,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 354 transitions. [2023-12-24 12:58:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 12:58:40,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:40,580 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:40,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:40,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:40,786 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:40,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:40,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1246564695, now seen corresponding path program 1 times [2023-12-24 12:58:40,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:40,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417857092] [2023-12-24 12:58:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:40,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:40,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:40,789 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:40,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 12:58:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:41,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 12:58:41,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:41,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 12:58:41,109 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 29 treesize of output 13 [2023-12-24 12:58:41,413 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 35 treesize of output 19 [2023-12-24 12:58:41,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2023-12-24 12:58:41,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 12:58:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 174 proven. 39 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-12-24 12:58:41,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:41,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417857092] [2023-12-24 12:58:41,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417857092] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:41,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:41,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2023-12-24 12:58:41,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057492533] [2023-12-24 12:58:41,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:41,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 12:58:41,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:41,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 12:58:41,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-12-24 12:58:41,705 INFO L87 Difference]: Start difference. First operand 281 states and 354 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:42,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:42,402 INFO L93 Difference]: Finished difference Result 639 states and 809 transitions. [2023-12-24 12:58:42,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:58:42,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 129 [2023-12-24 12:58:42,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:42,404 INFO L225 Difference]: With dead ends: 639 [2023-12-24 12:58:42,404 INFO L226 Difference]: Without dead ends: 359 [2023-12-24 12:58:42,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2023-12-24 12:58:42,405 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 122 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:42,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 651 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 12:58:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-24 12:58:42,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 281. [2023-12-24 12:58:42,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 239 states have (on average 1.217573221757322) internal successors, (291), 240 states have internal predecessors, (291), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:58:42,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 351 transitions. [2023-12-24 12:58:42,427 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 351 transitions. Word has length 129 [2023-12-24 12:58:42,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:42,428 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 351 transitions. [2023-12-24 12:58:42,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 351 transitions. [2023-12-24 12:58:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 12:58:42,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:42,430 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:42,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:42,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:42,637 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:42,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:42,637 INFO L85 PathProgramCache]: Analyzing trace with hash 682370445, now seen corresponding path program 1 times [2023-12-24 12:58:42,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:42,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64482259] [2023-12-24 12:58:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:42,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:42,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:42,653 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:42,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 12:58:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:42,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 12:58:42,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:42,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 12:58:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:42,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:42,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:42,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64482259] [2023-12-24 12:58:42,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64482259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:42,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:42,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:58:42,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067373033] [2023-12-24 12:58:42,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:42,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:58:42,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:58:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:58:42,923 INFO L87 Difference]: Start difference. First operand 281 states and 351 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:43,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:43,355 INFO L93 Difference]: Finished difference Result 605 states and 756 transitions. [2023-12-24 12:58:43,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:58:43,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 129 [2023-12-24 12:58:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:43,357 INFO L225 Difference]: With dead ends: 605 [2023-12-24 12:58:43,357 INFO L226 Difference]: Without dead ends: 325 [2023-12-24 12:58:43,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 12:58:43,358 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 59 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:43,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 419 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:58:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-12-24 12:58:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 281. [2023-12-24 12:58:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 239 states have (on average 1.205020920502092) internal successors, (288), 240 states have internal predecessors, (288), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:58:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 348 transitions. [2023-12-24 12:58:43,378 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 348 transitions. Word has length 129 [2023-12-24 12:58:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:43,378 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 348 transitions. [2023-12-24 12:58:43,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 348 transitions. [2023-12-24 12:58:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-24 12:58:43,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:43,379 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:43,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-24 12:58:43,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:43,585 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:43,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:43,586 INFO L85 PathProgramCache]: Analyzing trace with hash -905977457, now seen corresponding path program 1 times [2023-12-24 12:58:43,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:43,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12126493] [2023-12-24 12:58:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:43,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:43,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:43,587 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:43,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 12:58:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:43,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 12:58:43,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:43,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 12:58:43,850 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 24 treesize of output 23 [2023-12-24 12:58:44,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:44,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 38 [2023-12-24 12:58:44,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2023-12-24 12:58:44,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:44,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 21 [2023-12-24 12:58:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 223 proven. 39 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-24 12:58:44,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:44,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:44,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12126493] [2023-12-24 12:58:44,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12126493] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:44,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:44,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2023-12-24 12:58:44,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253621509] [2023-12-24 12:58:44,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:44,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 12:58:44,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:44,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 12:58:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-12-24 12:58:44,870 INFO L87 Difference]: Start difference. First operand 281 states and 348 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:45,348 INFO L93 Difference]: Finished difference Result 599 states and 744 transitions. [2023-12-24 12:58:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:58:45,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 129 [2023-12-24 12:58:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:45,351 INFO L225 Difference]: With dead ends: 599 [2023-12-24 12:58:45,351 INFO L226 Difference]: Without dead ends: 319 [2023-12-24 12:58:45,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-12-24 12:58:45,352 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 194 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:45,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 478 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:58:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-24 12:58:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 281. [2023-12-24 12:58:45,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 239 states have (on average 1.1924686192468619) internal successors, (285), 240 states have internal predecessors, (285), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:58:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 345 transitions. [2023-12-24 12:58:45,372 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 345 transitions. Word has length 129 [2023-12-24 12:58:45,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:45,372 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 345 transitions. [2023-12-24 12:58:45,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:45,372 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 345 transitions. [2023-12-24 12:58:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 12:58:45,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:45,373 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:45,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-24 12:58:45,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:45,579 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:45,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash 80661696, now seen corresponding path program 1 times [2023-12-24 12:58:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674469578] [2023-12-24 12:58:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:45,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:45,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:45,581 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:45,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 12:58:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:45,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 12:58:45,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:45,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:58:46,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 12:58:46,357 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 24 treesize of output 23 [2023-12-24 12:58:47,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 15 [2023-12-24 12:58:47,037 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 45 treesize of output 38 [2023-12-24 12:58:47,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:47,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 23 [2023-12-24 12:58:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 363 proven. 48 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-24 12:58:47,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:47,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:47,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674469578] [2023-12-24 12:58:47,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674469578] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:47,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:47,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2023-12-24 12:58:47,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001334671] [2023-12-24 12:58:47,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:47,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:58:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:47,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:58:47,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-12-24 12:58:47,505 INFO L87 Difference]: Start difference. First operand 281 states and 345 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:48,145 INFO L93 Difference]: Finished difference Result 664 states and 826 transitions. [2023-12-24 12:58:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:58:48,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-24 12:58:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:48,147 INFO L225 Difference]: With dead ends: 664 [2023-12-24 12:58:48,147 INFO L226 Difference]: Without dead ends: 384 [2023-12-24 12:58:48,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-12-24 12:58:48,148 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 183 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:48,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 504 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 12:58:48,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-24 12:58:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 237. [2023-12-24 12:58:48,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 195 states have (on average 1.1794871794871795) internal successors, (230), 196 states have internal predecessors, (230), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:58:48,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 290 transitions. [2023-12-24 12:58:48,168 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 290 transitions. Word has length 130 [2023-12-24 12:58:48,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:48,169 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 290 transitions. [2023-12-24 12:58:48,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:48,169 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 290 transitions. [2023-12-24 12:58:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 12:58:48,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:48,169 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:48,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:48,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:48,376 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:48,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:48,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1099989318, now seen corresponding path program 1 times [2023-12-24 12:58:48,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:48,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645680191] [2023-12-24 12:58:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:48,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:48,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:48,377 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:48,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 12:58:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:48,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 12:58:48,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:48,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 12:58:48,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 12:58:49,003 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 29 treesize of output 13 [2023-12-24 12:58:49,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 15 [2023-12-24 12:58:49,435 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 44 treesize of output 37 [2023-12-24 12:58:49,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:49,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 26 [2023-12-24 12:58:49,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 12:58:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 363 proven. 48 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-24 12:58:49,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:49,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:49,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645680191] [2023-12-24 12:58:49,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645680191] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:49,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:49,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2023-12-24 12:58:49,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002334790] [2023-12-24 12:58:49,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:49,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:58:49,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:49,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:58:49,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-24 12:58:49,814 INFO L87 Difference]: Start difference. First operand 237 states and 290 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:50,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:50,326 INFO L93 Difference]: Finished difference Result 582 states and 712 transitions. [2023-12-24 12:58:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:58:50,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-24 12:58:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:50,327 INFO L225 Difference]: With dead ends: 582 [2023-12-24 12:58:50,327 INFO L226 Difference]: Without dead ends: 346 [2023-12-24 12:58:50,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-12-24 12:58:50,328 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 173 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:50,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 344 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:58:50,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-24 12:58:50,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 237. [2023-12-24 12:58:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 195 states have (on average 1.1692307692307693) internal successors, (228), 196 states have internal predecessors, (228), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:58:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 288 transitions. [2023-12-24 12:58:50,348 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 288 transitions. Word has length 130 [2023-12-24 12:58:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:50,348 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 288 transitions. [2023-12-24 12:58:50,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 288 transitions. [2023-12-24 12:58:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 12:58:50,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:50,349 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:50,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-24 12:58:50,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:50,555 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:50,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:50,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1859659081, now seen corresponding path program 1 times [2023-12-24 12:58:50,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:50,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428962439] [2023-12-24 12:58:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:50,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:50,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:50,557 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:50,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 12:58:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:50,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 12:58:50,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:50,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 12:58:51,074 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 21 treesize of output 17 [2023-12-24 12:58:51,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 15 [2023-12-24 12:58:51,108 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 43 treesize of output 36 [2023-12-24 12:58:51,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2023-12-24 12:58:51,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:51,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 36 [2023-12-24 12:58:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 12:58:51,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:51,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:51,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428962439] [2023-12-24 12:58:51,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428962439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:51,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:51,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 12:58:51,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842005982] [2023-12-24 12:58:51,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:51,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 12:58:51,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:51,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 12:58:51,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-24 12:58:51,298 INFO L87 Difference]: Start difference. First operand 237 states and 288 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 12:58:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:52,353 INFO L93 Difference]: Finished difference Result 698 states and 838 transitions. [2023-12-24 12:58:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 12:58:52,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-12-24 12:58:52,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:52,355 INFO L225 Difference]: With dead ends: 698 [2023-12-24 12:58:52,355 INFO L226 Difference]: Without dead ends: 462 [2023-12-24 12:58:52,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-24 12:58:52,356 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 283 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:52,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 470 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 12:58:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-24 12:58:52,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 345. [2023-12-24 12:58:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 303 states have (on average 1.174917491749175) internal successors, (356), 304 states have internal predecessors, (356), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:58:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 416 transitions. [2023-12-24 12:58:52,380 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 416 transitions. Word has length 130 [2023-12-24 12:58:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:52,380 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 416 transitions. [2023-12-24 12:58:52,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 12:58:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 416 transitions. [2023-12-24 12:58:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 12:58:52,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:52,381 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:52,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:52,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:52,589 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:52,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:52,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1859599499, now seen corresponding path program 1 times [2023-12-24 12:58:52,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:52,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758473417] [2023-12-24 12:58:52,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:52,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:52,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:52,591 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:52,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 12:58:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:52,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 12:58:52,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:52,902 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 14 treesize of output 10 [2023-12-24 12:58:53,087 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 21 treesize of output 17 [2023-12-24 12:58:53,106 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 39 treesize of output 38 [2023-12-24 12:58:53,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 15 [2023-12-24 12:58:53,157 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 60 treesize of output 47 [2023-12-24 12:58:53,426 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 12:58:53,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:53,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:53,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758473417] [2023-12-24 12:58:53,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758473417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:53,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:53,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 12:58:53,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038093997] [2023-12-24 12:58:53,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:53,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 12:58:53,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:53,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 12:58:53,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 12:58:53,427 INFO L87 Difference]: Start difference. First operand 345 states and 416 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 12:58:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:54,434 INFO L93 Difference]: Finished difference Result 497 states and 588 transitions. [2023-12-24 12:58:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 12:58:54,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-12-24 12:58:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:54,437 INFO L225 Difference]: With dead ends: 497 [2023-12-24 12:58:54,437 INFO L226 Difference]: Without dead ends: 495 [2023-12-24 12:58:54,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-24 12:58:54,437 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 278 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:54,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 368 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 12:58:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-24 12:58:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 349. [2023-12-24 12:58:54,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 307 states have (on average 1.1726384364820848) internal successors, (360), 308 states have internal predecessors, (360), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:58:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 420 transitions. [2023-12-24 12:58:54,462 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 420 transitions. Word has length 130 [2023-12-24 12:58:54,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:54,463 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 420 transitions. [2023-12-24 12:58:54,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 12:58:54,463 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 420 transitions. [2023-12-24 12:58:54,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 12:58:54,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:54,464 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:54,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:54,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:54,672 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:54,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1240537928, now seen corresponding path program 1 times [2023-12-24 12:58:54,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:54,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279582822] [2023-12-24 12:58:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:54,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:54,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:54,674 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:54,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 12:58:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:54,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 12:58:54,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:54,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:58:55,108 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 8 treesize of output 1 [2023-12-24 12:58:55,253 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 29 treesize of output 13 [2023-12-24 12:58:55,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 15 [2023-12-24 12:58:55,709 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 56 treesize of output 43 [2023-12-24 12:58:55,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:55,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 32 [2023-12-24 12:58:55,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 12:58:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 363 proven. 48 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-24 12:58:55,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 12:58:56,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:56,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279582822] [2023-12-24 12:58:56,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279582822] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:56,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:56,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2023-12-24 12:58:56,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832919765] [2023-12-24 12:58:56,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:56,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:58:56,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:58:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-24 12:58:56,111 INFO L87 Difference]: Start difference. First operand 349 states and 420 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:56,684 INFO L93 Difference]: Finished difference Result 908 states and 1091 transitions. [2023-12-24 12:58:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:58:56,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-24 12:58:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:56,686 INFO L225 Difference]: With dead ends: 908 [2023-12-24 12:58:56,686 INFO L226 Difference]: Without dead ends: 560 [2023-12-24 12:58:56,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-12-24 12:58:56,688 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 146 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:56,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 409 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 12:58:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-12-24 12:58:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 426. [2023-12-24 12:58:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 384 states have (on average 1.1692708333333333) internal successors, (449), 385 states have internal predecessors, (449), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:58:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 509 transitions. [2023-12-24 12:58:56,714 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 509 transitions. Word has length 130 [2023-12-24 12:58:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:56,714 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 509 transitions. [2023-12-24 12:58:56,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 12:58:56,714 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 509 transitions. [2023-12-24 12:58:56,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 12:58:56,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:56,715 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 12:58:56,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:56,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:56,921 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:56,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1093538955, now seen corresponding path program 1 times [2023-12-24 12:58:56,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:56,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802571754] [2023-12-24 12:58:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:56,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:56,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:56,923 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:56,942 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 (25)] Waiting until timeout for monitored process [2023-12-24 12:59:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:40,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-24 12:59:40,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:40,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 12:59:40,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 32 [2023-12-24 12:59:41,321 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 18 treesize of output 7 [2023-12-24 12:59:41,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-24 12:59:41,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 12:59:42,812 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 32 treesize of output 27 [2023-12-24 12:59:44,771 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 37 treesize of output 36 [2023-12-24 12:59:45,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 56 [2023-12-24 12:59:49,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:49,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 82 [2023-12-24 12:59:53,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:53,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 127 [2023-12-24 12:59:54,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 13:00:07,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:07,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 84 [2023-12-24 13:00:07,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:07,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 58 [2023-12-24 13:00:07,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:07,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 68 [2023-12-24 13:00:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 170 proven. 303 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-24 13:00:09,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 13:00:22,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:22,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802571754] [2023-12-24 13:00:22,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802571754] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:22,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:00:22,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [39] total 43 [2023-12-24 13:00:22,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864139118] [2023-12-24 13:00:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:22,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:00:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:00:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1577, Unknown=1, NotChecked=0, Total=1806 [2023-12-24 13:00:22,315 INFO L87 Difference]: Start difference. First operand 426 states and 509 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:00:30,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:30,975 INFO L93 Difference]: Finished difference Result 907 states and 1084 transitions. [2023-12-24 13:00:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:00:30,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 131 [2023-12-24 13:00:30,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:30,987 INFO L225 Difference]: With dead ends: 907 [2023-12-24 13:00:30,987 INFO L226 Difference]: Without dead ends: 482 [2023-12-24 13:00:30,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=233, Invalid=1658, Unknown=1, NotChecked=0, Total=1892 [2023-12-24 13:00:30,989 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 99 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:30,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 358 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-24 13:00:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-24 13:00:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 426. [2023-12-24 13:00:31,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 384 states have (on average 1.1640625) internal successors, (447), 385 states have internal predecessors, (447), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 13:00:31,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 507 transitions. [2023-12-24 13:00:31,016 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 507 transitions. Word has length 131 [2023-12-24 13:00:31,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:31,016 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 507 transitions. [2023-12-24 13:00:31,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:00:31,016 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 507 transitions. [2023-12-24 13:00:31,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-24 13:00:31,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:31,017 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:00:31,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:31,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:00:31,232 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:31,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1248716179, now seen corresponding path program 1 times [2023-12-24 13:00:31,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:31,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310675682] [2023-12-24 13:00:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:31,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:00:31,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:31,234 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:00:31,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 13:00:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:31,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 13:00:31,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:31,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:00:31,610 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 37 treesize of output 17 [2023-12-24 13:00:32,105 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 39 treesize of output 30 [2023-12-24 13:00:32,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:32,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 26 [2023-12-24 13:00:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 134 proven. 42 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-12-24 13:00:32,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 13:00:32,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:32,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310675682] [2023-12-24 13:00:32,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310675682] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:32,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:00:32,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 22 [2023-12-24 13:00:32,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701665206] [2023-12-24 13:00:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:32,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 13:00:32,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:32,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 13:00:32,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-12-24 13:00:32,631 INFO L87 Difference]: Start difference. First operand 426 states and 507 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:00:33,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:33,615 INFO L93 Difference]: Finished difference Result 909 states and 1083 transitions. [2023-12-24 13:00:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 13:00:33,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 131 [2023-12-24 13:00:33,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:33,617 INFO L225 Difference]: With dead ends: 909 [2023-12-24 13:00:33,617 INFO L226 Difference]: Without dead ends: 484 [2023-12-24 13:00:33,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2023-12-24 13:00:33,618 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 162 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:33,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1017 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 13:00:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-12-24 13:00:33,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 408. [2023-12-24 13:00:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 366 states have (on average 1.1557377049180328) internal successors, (423), 367 states have internal predecessors, (423), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 13:00:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 483 transitions. [2023-12-24 13:00:33,651 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 483 transitions. Word has length 131 [2023-12-24 13:00:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:33,652 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 483 transitions. [2023-12-24 13:00:33,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:00:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 483 transitions. [2023-12-24 13:00:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 13:00:33,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:33,653 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:00:33,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:33,861 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 [2023-12-24 13:00:33,861 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:33,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:33,861 INFO L85 PathProgramCache]: Analyzing trace with hash 280561451, now seen corresponding path program 1 times [2023-12-24 13:00:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:33,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489074386] [2023-12-24 13:00:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:33,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:00:33,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:33,863 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:00:33,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 13:00:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:34,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 13:00:34,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:34,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:00:34,179 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 28 treesize of output 12 [2023-12-24 13:00:34,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 13:00:34,450 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 37 treesize of output 36 [2023-12-24 13:00:34,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:34,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 56 [2023-12-24 13:00:34,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 15 [2023-12-24 13:00:34,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:34,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 65 [2023-12-24 13:00:34,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:34,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 57 [2023-12-24 13:00:34,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:34,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 36 [2023-12-24 13:00:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 13:00:35,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:00:35,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:35,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489074386] [2023-12-24 13:00:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489074386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:00:35,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:00:35,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 13:00:35,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717104890] [2023-12-24 13:00:35,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:35,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 13:00:35,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 13:00:35,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:00:35,076 INFO L87 Difference]: Start difference. First operand 408 states and 483 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 13:00:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:37,609 INFO L93 Difference]: Finished difference Result 1153 states and 1371 transitions. [2023-12-24 13:00:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 13:00:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2023-12-24 13:00:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:37,612 INFO L225 Difference]: With dead ends: 1153 [2023-12-24 13:00:37,612 INFO L226 Difference]: Without dead ends: 746 [2023-12-24 13:00:37,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2023-12-24 13:00:37,613 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 519 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:37,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 702 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-24 13:00:37,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-12-24 13:00:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 495. [2023-12-24 13:00:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 453 states have (on average 1.1655629139072847) internal successors, (528), 454 states have internal predecessors, (528), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 13:00:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 588 transitions. [2023-12-24 13:00:37,644 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 588 transitions. Word has length 132 [2023-12-24 13:00:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:37,644 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 588 transitions. [2023-12-24 13:00:37,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 13:00:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 588 transitions. [2023-12-24 13:00:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 13:00:37,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:37,645 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:00:37,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:37,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:00:37,851 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:37,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash 421110061, now seen corresponding path program 1 times [2023-12-24 13:00:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:37,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114580643] [2023-12-24 13:00:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:37,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:00:37,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:37,853 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:00:37,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 13:00:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:38,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 13:00:38,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:38,155 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 12 treesize of output 8 [2023-12-24 13:00:38,269 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 32 treesize of output 27 [2023-12-24 13:00:40,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 13:00:40,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:40,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 29 [2023-12-24 13:00:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 373 proven. 81 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-24 13:00:40,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:40,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114580643] [2023-12-24 13:00:40,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114580643] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [898442911] [2023-12-24 13:00:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:40,762 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:00:40,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:00:40,805 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:00:40,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-24 13:00:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:41,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 13:00:41,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:41,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:00:42,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 13:00:45,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 13:00:45,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2023-12-24 13:00:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 368 proven. 81 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-24 13:00:45,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:46,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:46,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2023-12-24 13:00:46,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [898442911] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:46,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:00:46,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2023-12-24 13:00:46,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414743557] [2023-12-24 13:00:46,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:00:46,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-24 13:00:46,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-24 13:00:46,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1929, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 13:00:46,671 INFO L87 Difference]: Start difference. First operand 495 states and 588 transitions. Second operand has 37 states, 31 states have (on average 3.6774193548387095) internal successors, (114), 35 states have internal predecessors, (114), 15 states have call successors, (34), 11 states have call predecessors, (34), 15 states have return successors, (34), 9 states have call predecessors, (34), 15 states have call successors, (34) [2023-12-24 13:00:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:52,137 INFO L93 Difference]: Finished difference Result 922 states and 1082 transitions. [2023-12-24 13:00:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 13:00:52,138 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 31 states have (on average 3.6774193548387095) internal successors, (114), 35 states have internal predecessors, (114), 15 states have call successors, (34), 11 states have call predecessors, (34), 15 states have return successors, (34), 9 states have call predecessors, (34), 15 states have call successors, (34) Word has length 132 [2023-12-24 13:00:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:52,139 INFO L225 Difference]: With dead ends: 922 [2023-12-24 13:00:52,139 INFO L226 Difference]: Without dead ends: 428 [2023-12-24 13:00:52,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 13:00:52,140 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 224 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:52,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 752 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-24 13:00:52,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-24 13:00:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 412. [2023-12-24 13:00:52,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 366 states have (on average 1.1420765027322404) internal successors, (418), 367 states have internal predecessors, (418), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 13:00:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 478 transitions. [2023-12-24 13:00:52,178 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 478 transitions. Word has length 132 [2023-12-24 13:00:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:52,179 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 478 transitions. [2023-12-24 13:00:52,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 31 states have (on average 3.6774193548387095) internal successors, (114), 35 states have internal predecessors, (114), 15 states have call successors, (34), 11 states have call predecessors, (34), 15 states have return successors, (34), 9 states have call predecessors, (34), 15 states have call successors, (34) [2023-12-24 13:00:52,179 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 478 transitions. [2023-12-24 13:00:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 13:00:52,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:52,180 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:00:52,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:52,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:52,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:00:52,592 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:52,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:52,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1179817822, now seen corresponding path program 1 times [2023-12-24 13:00:52,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:52,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219785390] [2023-12-24 13:00:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:52,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:00:52,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:52,594 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:00:52,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 13:00:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:52,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:00:52,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:53,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 13:00:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-12-24 13:00:53,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 13:00:53,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:53,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219785390] [2023-12-24 13:00:53,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219785390] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:53,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:00:53,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-24 13:00:53,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969970719] [2023-12-24 13:00:53,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:53,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:00:53,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:00:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:00:53,340 INFO L87 Difference]: Start difference. First operand 412 states and 478 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:00:53,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:53,579 INFO L93 Difference]: Finished difference Result 833 states and 965 transitions. [2023-12-24 13:00:53,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:00:53,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-12-24 13:00:53,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:53,581 INFO L225 Difference]: With dead ends: 833 [2023-12-24 13:00:53,581 INFO L226 Difference]: Without dead ends: 422 [2023-12-24 13:00:53,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 13:00:53,582 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 53 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:53,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 335 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:00:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-24 13:00:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 412. [2023-12-24 13:00:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 366 states have (on average 1.139344262295082) internal successors, (417), 367 states have internal predecessors, (417), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 13:00:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 477 transitions. [2023-12-24 13:00:53,615 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 477 transitions. Word has length 132 [2023-12-24 13:00:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:53,616 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 477 transitions. [2023-12-24 13:00:53,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:00:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 477 transitions. [2023-12-24 13:00:53,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 13:00:53,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:53,617 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:00:53,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:00:53,825 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:53,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:53,825 INFO L85 PathProgramCache]: Analyzing trace with hash -370471196, now seen corresponding path program 1 times [2023-12-24 13:00:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793535240] [2023-12-24 13:00:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:53,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:00:53,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:53,827 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:00:53,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 13:01:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:01:23,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-24 13:01:23,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:01:23,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-24 13:01:23,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:01:23,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 32 [2023-12-24 13:01:25,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:01:25,991 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 37 treesize of output 17 [2023-12-24 13:01:27,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-24 13:01:27,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2023-12-24 13:01:29,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:29,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 96 [2023-12-24 13:01:34,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:34,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 140 [2023-12-24 13:01:35,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 13:02:02,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:02,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 69 [2023-12-24 13:02:02,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:02,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 61 [2023-12-24 13:02:02,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:02,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2023-12-24 13:02:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 329 proven. 138 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-24 13:02:04,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:03:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 13:03:11,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:03:11,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793535240] [2023-12-24 13:03:11,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793535240] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:03:11,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:03:11,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [34] total 40 [2023-12-24 13:03:11,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621925287] [2023-12-24 13:03:11,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:03:11,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:03:11,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:03:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:03:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1312, Unknown=15, NotChecked=0, Total=1560 [2023-12-24 13:03:11,528 INFO L87 Difference]: Start difference. First operand 412 states and 477 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:03:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:03:27,467 INFO L93 Difference]: Finished difference Result 925 states and 1068 transitions. [2023-12-24 13:03:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 13:03:27,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-12-24 13:03:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:03:27,478 INFO L225 Difference]: With dead ends: 925 [2023-12-24 13:03:27,478 INFO L226 Difference]: Without dead ends: 514 [2023-12-24 13:03:27,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 90.4s TimeCoverageRelationStatistics Valid=255, Invalid=1536, Unknown=15, NotChecked=0, Total=1806 [2023-12-24 13:03:27,479 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 128 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:03:27,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 475 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2023-12-24 13:03:27,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-24 13:03:27,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 420. [2023-12-24 13:03:27,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 374 states have (on average 1.1363636363636365) internal successors, (425), 375 states have internal predecessors, (425), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 13:03:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 485 transitions. [2023-12-24 13:03:27,516 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 485 transitions. Word has length 132 [2023-12-24 13:03:27,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:03:27,516 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 485 transitions. [2023-12-24 13:03:27,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:03:27,516 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 485 transitions. [2023-12-24 13:03:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 13:03:27,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:03:27,517 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:03:27,531 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 (31)] Ended with exit code 0 [2023-12-24 13:03:27,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:03:27,731 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:03:27,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:03:27,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2122462630, now seen corresponding path program 1 times [2023-12-24 13:03:27,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:03:27,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448719126] [2023-12-24 13:03:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:03:27,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:03:27,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:03:27,733 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:03:27,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 13:03:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:03:27,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 13:03:27,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:03:27,983 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 21 treesize of output 17 [2023-12-24 13:03:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 13:03:28,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:03:28,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:03:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448719126] [2023-12-24 13:03:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448719126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:03:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:03:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 13:03:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232992748] [2023-12-24 13:03:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:03:28,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:03:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:03:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:03:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:03:28,116 INFO L87 Difference]: Start difference. First operand 420 states and 485 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:03:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:03:28,696 INFO L93 Difference]: Finished difference Result 1078 states and 1240 transitions. [2023-12-24 13:03:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 13:03:28,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2023-12-24 13:03:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:03:28,699 INFO L225 Difference]: With dead ends: 1078 [2023-12-24 13:03:28,699 INFO L226 Difference]: Without dead ends: 659 [2023-12-24 13:03:28,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-24 13:03:28,700 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 93 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:03:28,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 953 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 13:03:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-24 13:03:28,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 653. [2023-12-24 13:03:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 573 states have (on average 1.1221640488656195) internal successors, (643), 576 states have internal predecessors, (643), 52 states have call successors, (52), 27 states have call predecessors, (52), 27 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 13:03:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 747 transitions. [2023-12-24 13:03:28,765 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 747 transitions. Word has length 133 [2023-12-24 13:03:28,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:03:28,765 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 747 transitions. [2023-12-24 13:03:28,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:03:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 747 transitions. [2023-12-24 13:03:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 13:03:28,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:03:28,766 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:03:28,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 13:03:28,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:03:28,974 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:03:28,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:03:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2031956056, now seen corresponding path program 1 times [2023-12-24 13:03:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:03:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894384522] [2023-12-24 13:03:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:03:28,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:03:28,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:03:28,976 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:03:28,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 13:03:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:03:29,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:03:29,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:03:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-12-24 13:03:29,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:03:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 13:03:29,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:03:29,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894384522] [2023-12-24 13:03:29,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894384522] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:03:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:03:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 13:03:29,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916665922] [2023-12-24 13:03:29,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:03:29,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:03:29,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:03:29,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:03:29,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:03:29,562 INFO L87 Difference]: Start difference. First operand 653 states and 747 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:03:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:03:29,796 INFO L93 Difference]: Finished difference Result 1290 states and 1474 transitions. [2023-12-24 13:03:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:03:29,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2023-12-24 13:03:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:03:29,798 INFO L225 Difference]: With dead ends: 1290 [2023-12-24 13:03:29,798 INFO L226 Difference]: Without dead ends: 638 [2023-12-24 13:03:29,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:03:29,799 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 96 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:03:29,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 413 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:03:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-12-24 13:03:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 621. [2023-12-24 13:03:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 541 states have (on average 1.11275415896488) internal successors, (602), 544 states have internal predecessors, (602), 52 states have call successors, (52), 27 states have call predecessors, (52), 27 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 13:03:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 706 transitions. [2023-12-24 13:03:29,860 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 706 transitions. Word has length 133 [2023-12-24 13:03:29,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:03:29,861 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 706 transitions. [2023-12-24 13:03:29,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:03:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 706 transitions. [2023-12-24 13:03:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 13:03:29,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:03:29,862 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:03:29,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 13:03:30,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:03:30,070 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:03:30,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:03:30,070 INFO L85 PathProgramCache]: Analyzing trace with hash 792922216, now seen corresponding path program 1 times [2023-12-24 13:03:30,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:03:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282584493] [2023-12-24 13:03:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:03:30,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:03:30,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:03:30,072 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:03:30,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 13:03:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:03:30,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:03:30,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:03:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-12-24 13:03:30,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:03:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 13:03:30,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:03:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282584493] [2023-12-24 13:03:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282584493] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:03:30,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:03:30,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 13:03:30,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945426179] [2023-12-24 13:03:30,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:03:30,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:03:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:03:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:03:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:03:30,752 INFO L87 Difference]: Start difference. First operand 621 states and 706 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:03:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:03:30,974 INFO L93 Difference]: Finished difference Result 1259 states and 1430 transitions. [2023-12-24 13:03:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:03:30,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2023-12-24 13:03:30,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:03:30,976 INFO L225 Difference]: With dead ends: 1259 [2023-12-24 13:03:30,976 INFO L226 Difference]: Without dead ends: 639 [2023-12-24 13:03:30,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:03:30,977 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 34 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:03:30,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 528 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:03:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-12-24 13:03:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 622. [2023-12-24 13:03:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 542 states have (on average 1.1125461254612545) internal successors, (603), 545 states have internal predecessors, (603), 52 states have call successors, (52), 27 states have call predecessors, (52), 27 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 13:03:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 707 transitions. [2023-12-24 13:03:31,046 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 707 transitions. Word has length 133 [2023-12-24 13:03:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:03:31,046 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 707 transitions. [2023-12-24 13:03:31,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:03:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 707 transitions. [2023-12-24 13:03:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-24 13:03:31,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:03:31,047 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:03:31,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 13:03:31,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:03:31,255 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:03:31,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:03:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash -819282828, now seen corresponding path program 1 times [2023-12-24 13:03:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:03:31,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018233390] [2023-12-24 13:03:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:03:31,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:03:31,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:03:31,258 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:03:31,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 13:03:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:03:32,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 13:03:32,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:03:32,477 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 12 treesize of output 8 [2023-12-24 13:03:32,728 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 46 treesize of output 22 [2023-12-24 13:03:33,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:03:34,828 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 28 treesize of output 27 [2023-12-24 13:03:35,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2023-12-24 13:03:36,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:03:36,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 91 [2023-12-24 13:03:40,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:03:40,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 127 [2023-12-24 13:03:40,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-24 13:03:46,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2023-12-24 13:03:46,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:03:46,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 53 [2023-12-24 13:03:46,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:03:46,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 48 [2023-12-24 13:03:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 301 proven. 120 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-24 13:03:48,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:03:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 13:03:59,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:03:59,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018233390] [2023-12-24 13:03:59,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018233390] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:03:59,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:03:59,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 29 [2023-12-24 13:03:59,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672693805] [2023-12-24 13:03:59,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:03:59,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:03:59,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:03:59,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:03:59,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=660, Unknown=1, NotChecked=0, Total=812 [2023-12-24 13:03:59,795 INFO L87 Difference]: Start difference. First operand 622 states and 707 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:04:08,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:04:08,804 INFO L93 Difference]: Finished difference Result 1242 states and 1409 transitions. [2023-12-24 13:04:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:04:08,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2023-12-24 13:04:08,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:04:08,816 INFO L225 Difference]: With dead ends: 1242 [2023-12-24 13:04:08,816 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 13:04:08,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=156, Invalid=713, Unknown=1, NotChecked=0, Total=870 [2023-12-24 13:04:08,818 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 74 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:04:08,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 260 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-24 13:04:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 13:04:08,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 13:04:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 13:04:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 13:04:08,819 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2023-12-24 13:04:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:04:08,819 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 13:04:08,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 13:04:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 13:04:08,819 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 13:04:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 13:04:08,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-12-24 13:04:09,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:04:09,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 13:12:15,457 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 13:12:15,461 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-7-12-4-12-7-5-7-5-8-9-8-9-8-12-8-12-8-12-7-9-6-9-5-9-5-9-5-9-5-3-5-3-4-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-53-12-7-12-8-8-8-9-8-9-8-9-8-12-8-12-8-12-7-9-6-9-5-9-5-9-5-9-5-3-5-3-4-1 context. [2023-12-24 13:12:15,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 13:12:15,464 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 13:12:15,468 INFO L158 Benchmark]: Toolchain (without parser) took 874026.74ms. Allocated memory was 261.1MB in the beginning and 704.6MB in the end (delta: 443.5MB). Free memory was 206.5MB in the beginning and 453.9MB in the end (delta: -247.4MB). Peak memory consumption was 197.8MB. Max. memory is 8.0GB. [2023-12-24 13:12:15,468 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 210.8MB. Free memory is still 160.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 13:12:15,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.88ms. Allocated memory is still 261.1MB. Free memory was 206.5MB in the beginning and 190.2MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 13:12:15,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.37ms. Allocated memory is still 261.1MB. Free memory was 190.2MB in the beginning and 186.6MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 13:12:15,473 INFO L158 Benchmark]: Boogie Preprocessor took 76.97ms. Allocated memory is still 261.1MB. Free memory was 186.6MB in the beginning and 181.9MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 13:12:15,473 INFO L158 Benchmark]: RCFGBuilder took 785.76ms. Allocated memory is still 261.1MB. Free memory was 181.9MB in the beginning and 145.7MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-24 13:12:15,473 INFO L158 Benchmark]: TraceAbstraction took 872896.47ms. Allocated memory was 261.1MB in the beginning and 704.6MB in the end (delta: 443.5MB). Free memory was 145.2MB in the beginning and 453.9MB in the end (delta: -308.7MB). Peak memory consumption was 135.9MB. Max. memory is 8.0GB. [2023-12-24 13:12:15,474 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 210.8MB. Free memory is still 160.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.88ms. Allocated memory is still 261.1MB. Free memory was 206.5MB in the beginning and 190.2MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.37ms. Allocated memory is still 261.1MB. Free memory was 190.2MB in the beginning and 186.6MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 76.97ms. Allocated memory is still 261.1MB. Free memory was 186.6MB in the beginning and 181.9MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 785.76ms. Allocated memory is still 261.1MB. Free memory was 181.9MB in the beginning and 145.7MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 872896.47ms. Allocated memory was 261.1MB in the beginning and 704.6MB in the end (delta: 443.5MB). Free memory was 145.2MB in the beginning and 453.9MB in the end (delta: -308.7MB). Peak memory consumption was 135.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-4-20-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-22-20-2-3-2-2-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown