/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:01:22,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:01:22,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:01:23,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:01:23,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:01:23,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:01:23,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:01:23,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:01:23,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:01:23,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:01:23,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:01:23,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:01:23,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:01:23,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:01:23,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:01:23,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:01:23,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:01:23,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:01:23,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:01:23,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:01:23,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:01:23,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:01:23,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:01:23,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:01:23,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 07:01:23,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 07:01:23,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 07:01:23,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 07:01:23,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 07:01:23,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 07:01:23,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:01:23,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:01:23,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:01:23,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:01:23,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:01:23,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:01:23,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:01:23,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:01:23,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:01:23,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:01:23,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:01:23,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:01:23,071 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:01:23,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:01:23,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:01:23,072 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:01:23,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:01:23,073 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:01:23,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:01:23,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:01:23,073 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:01:23,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:01:23,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:01:23,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:01:23,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:01:23,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:01:23,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:01:23,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:01:23,074 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:01:23,074 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:01:23,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:01:23,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:01:23,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:01:23,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:01:23,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:01:23,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:01:23,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:01:23,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:01:23,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:01:23,075 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:01:23,076 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:01:23,076 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:01:23,076 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:01:23,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:01:23,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:01:23,076 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:01:23,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:01:23,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:01:23,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:01:23,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:01:23,287 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:01:23,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 07:01:23,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f22c5f10e/c5fb2dd39f7d4836aae27ffb8ea6fa12/FLAGd52dc4ed8 [2022-01-10 07:01:23,729 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:01:23,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 07:01:23,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f22c5f10e/c5fb2dd39f7d4836aae27ffb8ea6fa12/FLAGd52dc4ed8 [2022-01-10 07:01:24,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f22c5f10e/c5fb2dd39f7d4836aae27ffb8ea6fa12 [2022-01-10 07:01:24,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:01:24,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:01:24,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:01:24,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:01:24,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:01:24,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618b2f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24, skipping insertion in model container [2022-01-10 07:01:24,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:01:24,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:01:24,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13790,13803] [2022-01-10 07:01:24,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14437,14450] [2022-01-10 07:01:24,435 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15670,15683] [2022-01-10 07:01:24,442 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16730,16743] [2022-01-10 07:01:24,492 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25121,25134] [2022-01-10 07:01:24,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:01:24,559 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:01:24,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13790,13803] [2022-01-10 07:01:24,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14437,14450] [2022-01-10 07:01:24,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15670,15683] [2022-01-10 07:01:24,702 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16730,16743] [2022-01-10 07:01:24,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25121,25134] [2022-01-10 07:01:24,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:01:24,799 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:01:24,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24 WrapperNode [2022-01-10 07:01:24,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:01:24,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:01:24,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:01:24,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:01:24,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,875 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1514 [2022-01-10 07:01:24,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:01:24,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:01:24,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:01:24,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:01:24,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:01:24,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:01:24,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:01:24,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:01:24,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (1/1) ... [2022-01-10 07:01:24,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:01:24,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:01:24,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 07:01:25,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 07:01:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:01:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:01:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:01:25,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:01:25,259 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:01:25,260 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:01:26,298 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:01:26,305 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:01:26,305 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:01:26,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:01:26 BoogieIcfgContainer [2022-01-10 07:01:26,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:01:26,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:01:26,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:01:26,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:01:26,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:01:24" (1/3) ... [2022-01-10 07:01:26,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3533bd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:01:26, skipping insertion in model container [2022-01-10 07:01:26,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:01:24" (2/3) ... [2022-01-10 07:01:26,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3533bd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:01:26, skipping insertion in model container [2022-01-10 07:01:26,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:01:26" (3/3) ... [2022-01-10 07:01:26,327 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 07:01:26,332 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:01:26,332 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 07:01:26,390 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:01:26,400 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 07:01:26,401 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 07:01:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 366 states, 360 states have (on average 1.836111111111111) internal successors, (661), 365 states have internal predecessors, (661), 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) [2022-01-10 07:01:26,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 07:01:26,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:26,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:26,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1389049256, now seen corresponding path program 1 times [2022-01-10 07:01:26,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:26,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169280302] [2022-01-10 07:01:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:26,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:26,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:26,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:26,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:01:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:26,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:01:26,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:26,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:26,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:26,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169280302] [2022-01-10 07:01:26,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169280302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:26,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:26,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:26,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374752756] [2022-01-10 07:01:26,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:26,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:01:26,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:26,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:01:26,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:01:26,998 INFO L87 Difference]: Start difference. First operand has 366 states, 360 states have (on average 1.836111111111111) internal successors, (661), 365 states have internal predecessors, (661), 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) Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2022-01-10 07:01:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:27,098 INFO L93 Difference]: Finished difference Result 1071 states and 1938 transitions. [2022-01-10 07:01:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:01:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) Word has length 136 [2022-01-10 07:01:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:27,110 INFO L225 Difference]: With dead ends: 1071 [2022-01-10 07:01:27,110 INFO L226 Difference]: Without dead ends: 708 [2022-01-10 07:01:27,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:27,115 INFO L933 BasicCegarLoop]: 1154 mSDtfsCounter, 1344 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:27,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1344 Valid, 1768 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-01-10 07:01:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 683. [2022-01-10 07:01:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 678 states have (on average 1.4410029498525074) internal successors, (977), 682 states have internal predecessors, (977), 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) [2022-01-10 07:01:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 977 transitions. [2022-01-10 07:01:27,172 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 977 transitions. Word has length 136 [2022-01-10 07:01:27,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:27,172 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 977 transitions. [2022-01-10 07:01:27,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2022-01-10 07:01:27,173 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 977 transitions. [2022-01-10 07:01:27,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 07:01:27,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:27,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:27,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:01:27,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:27,376 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash -544095604, now seen corresponding path program 1 times [2022-01-10 07:01:27,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:27,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925265782] [2022-01-10 07:01:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:27,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:27,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:27,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:27,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:01:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:27,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:01:27,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:27,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:27,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:27,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925265782] [2022-01-10 07:01:27,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925265782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:27,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:27,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:01:27,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125386282] [2022-01-10 07:01:27,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:27,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:01:27,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:27,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:01:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:01:27,703 INFO L87 Difference]: Start difference. First operand 683 states and 977 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2022-01-10 07:01:27,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:27,738 INFO L93 Difference]: Finished difference Result 2011 states and 2869 transitions. [2022-01-10 07:01:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:01:27,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) Word has length 137 [2022-01-10 07:01:27,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:27,743 INFO L225 Difference]: With dead ends: 2011 [2022-01-10 07:01:27,743 INFO L226 Difference]: Without dead ends: 1356 [2022-01-10 07:01:27,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:01:27,748 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 509 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:27,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1098 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:27,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2022-01-10 07:01:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 685. [2022-01-10 07:01:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 680 states have (on average 1.4397058823529412) internal successors, (979), 684 states have internal predecessors, (979), 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) [2022-01-10 07:01:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 979 transitions. [2022-01-10 07:01:27,792 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 979 transitions. Word has length 137 [2022-01-10 07:01:27,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:27,792 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 979 transitions. [2022-01-10 07:01:27,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2022-01-10 07:01:27,792 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 979 transitions. [2022-01-10 07:01:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 07:01:27,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:27,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:27,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:28,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:28,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash -269450215, now seen corresponding path program 1 times [2022-01-10 07:01:28,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:28,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089653085] [2022-01-10 07:01:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:28,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:28,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:28,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:28,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:01:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:28,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:01:28,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:28,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:28,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:28,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089653085] [2022-01-10 07:01:28,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089653085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:28,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:28,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:28,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366329705] [2022-01-10 07:01:28,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:28,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:01:28,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:01:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:01:28,333 INFO L87 Difference]: Start difference. First operand 685 states and 979 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2022-01-10 07:01:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:28,364 INFO L93 Difference]: Finished difference Result 1360 states and 1944 transitions. [2022-01-10 07:01:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:01:28,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) Word has length 138 [2022-01-10 07:01:28,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:28,366 INFO L225 Difference]: With dead ends: 1360 [2022-01-10 07:01:28,367 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 07:01:28,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:28,368 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 69 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:28,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1593 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:28,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 07:01:28,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-10 07:01:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 678 states have (on average 1.4380530973451326) internal successors, (975), 682 states have internal predecessors, (975), 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) [2022-01-10 07:01:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 975 transitions. [2022-01-10 07:01:28,386 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 975 transitions. Word has length 138 [2022-01-10 07:01:28,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:28,387 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 975 transitions. [2022-01-10 07:01:28,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2022-01-10 07:01:28,387 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 975 transitions. [2022-01-10 07:01:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 07:01:28,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:28,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:28,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:28,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:28,596 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:28,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:28,597 INFO L85 PathProgramCache]: Analyzing trace with hash -8857901, now seen corresponding path program 1 times [2022-01-10 07:01:28,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:28,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640759562] [2022-01-10 07:01:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:28,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:28,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:28,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:28,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:01:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:28,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:01:28,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:28,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:28,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:28,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640759562] [2022-01-10 07:01:28,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640759562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:28,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:28,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:28,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905835632] [2022-01-10 07:01:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:28,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:01:28,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:28,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:01:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:01:28,979 INFO L87 Difference]: Start difference. First operand 683 states and 975 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2022-01-10 07:01:29,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:29,058 INFO L93 Difference]: Finished difference Result 1695 states and 2409 transitions. [2022-01-10 07:01:29,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:01:29,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) Word has length 138 [2022-01-10 07:01:29,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:29,063 INFO L225 Difference]: With dead ends: 1695 [2022-01-10 07:01:29,063 INFO L226 Difference]: Without dead ends: 1022 [2022-01-10 07:01:29,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:29,065 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 1040 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:29,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 1318 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-01-10 07:01:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1000. [2022-01-10 07:01:29,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 995 states have (on average 1.4160804020100501) internal successors, (1409), 999 states have internal predecessors, (1409), 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) [2022-01-10 07:01:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1409 transitions. [2022-01-10 07:01:29,096 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1409 transitions. Word has length 138 [2022-01-10 07:01:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:29,098 INFO L470 AbstractCegarLoop]: Abstraction has 1000 states and 1409 transitions. [2022-01-10 07:01:29,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2022-01-10 07:01:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1409 transitions. [2022-01-10 07:01:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 07:01:29,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:29,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:29,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 07:01:29,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:29,307 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:29,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1716189906, now seen corresponding path program 1 times [2022-01-10 07:01:29,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:29,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474914985] [2022-01-10 07:01:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:29,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:29,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:29,310 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:29,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:01:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:29,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:01:29,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:29,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:29,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:29,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474914985] [2022-01-10 07:01:29,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474914985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:29,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:29,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:29,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705314417] [2022-01-10 07:01:29,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:29,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:01:29,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:29,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:01:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:01:29,630 INFO L87 Difference]: Start difference. First operand 1000 states and 1409 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2022-01-10 07:01:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:29,747 INFO L93 Difference]: Finished difference Result 2894 states and 4062 transitions. [2022-01-10 07:01:29,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:01:29,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) Word has length 143 [2022-01-10 07:01:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:29,753 INFO L225 Difference]: With dead ends: 2894 [2022-01-10 07:01:29,753 INFO L226 Difference]: Without dead ends: 1929 [2022-01-10 07:01:29,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:29,755 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 1017 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:29,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 1360 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:29,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2022-01-10 07:01:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1902. [2022-01-10 07:01:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1897 states have (on average 1.400105429625725) internal successors, (2656), 1901 states have internal predecessors, (2656), 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) [2022-01-10 07:01:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2656 transitions. [2022-01-10 07:01:29,809 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2656 transitions. Word has length 143 [2022-01-10 07:01:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:29,809 INFO L470 AbstractCegarLoop]: Abstraction has 1902 states and 2656 transitions. [2022-01-10 07:01:29,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2022-01-10 07:01:29,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2656 transitions. [2022-01-10 07:01:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 07:01:29,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:29,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:29,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 07:01:30,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:30,019 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:30,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash -997075818, now seen corresponding path program 1 times [2022-01-10 07:01:30,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:30,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981619387] [2022-01-10 07:01:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:30,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:30,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:30,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:30,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:01:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:30,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:01:30,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:30,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:30,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:30,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981619387] [2022-01-10 07:01:30,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981619387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:30,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:30,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:30,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615277239] [2022-01-10 07:01:30,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:30,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:01:30,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:30,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:01:30,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:01:30,377 INFO L87 Difference]: Start difference. First operand 1902 states and 2656 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2022-01-10 07:01:30,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:30,604 INFO L93 Difference]: Finished difference Result 5535 states and 7697 transitions. [2022-01-10 07:01:30,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:01:30,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) Word has length 144 [2022-01-10 07:01:30,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:30,616 INFO L225 Difference]: With dead ends: 5535 [2022-01-10 07:01:30,616 INFO L226 Difference]: Without dead ends: 3668 [2022-01-10 07:01:30,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:30,621 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 1063 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:30,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 1327 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:01:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2022-01-10 07:01:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3648. [2022-01-10 07:01:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3643 states have (on average 1.3788086741696404) internal successors, (5023), 3647 states have internal predecessors, (5023), 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) [2022-01-10 07:01:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 5023 transitions. [2022-01-10 07:01:30,763 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 5023 transitions. Word has length 144 [2022-01-10 07:01:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:30,763 INFO L470 AbstractCegarLoop]: Abstraction has 3648 states and 5023 transitions. [2022-01-10 07:01:30,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2022-01-10 07:01:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 5023 transitions. [2022-01-10 07:01:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:01:30,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:30,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:30,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:30,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:30,978 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:30,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1516744820, now seen corresponding path program 1 times [2022-01-10 07:01:30,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:30,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991475005] [2022-01-10 07:01:30,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:30,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:30,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:30,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:31,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:01:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:31,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:01:31,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:31,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:31,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:31,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991475005] [2022-01-10 07:01:31,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991475005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:31,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:31,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:31,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892173567] [2022-01-10 07:01:31,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:31,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:01:31,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:01:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:01:31,291 INFO L87 Difference]: Start difference. First operand 3648 states and 5023 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2022-01-10 07:01:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:31,364 INFO L93 Difference]: Finished difference Result 5365 states and 7402 transitions. [2022-01-10 07:01:31,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:01:31,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) Word has length 145 [2022-01-10 07:01:31,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:31,372 INFO L225 Difference]: With dead ends: 5365 [2022-01-10 07:01:31,372 INFO L226 Difference]: Without dead ends: 3069 [2022-01-10 07:01:31,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:31,376 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 55 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:31,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1577 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2022-01-10 07:01:31,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 3069. [2022-01-10 07:01:31,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3064 states have (on average 1.3759791122715406) internal successors, (4216), 3068 states have internal predecessors, (4216), 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) [2022-01-10 07:01:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 4216 transitions. [2022-01-10 07:01:31,497 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 4216 transitions. Word has length 145 [2022-01-10 07:01:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:31,497 INFO L470 AbstractCegarLoop]: Abstraction has 3069 states and 4216 transitions. [2022-01-10 07:01:31,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2022-01-10 07:01:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 4216 transitions. [2022-01-10 07:01:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 07:01:31,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:31,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:31,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:31,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:31,709 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash -272664393, now seen corresponding path program 1 times [2022-01-10 07:01:31,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:31,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126892986] [2022-01-10 07:01:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:31,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:31,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:31,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:31,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:01:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:31,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:01:31,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:31,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:31,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:31,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126892986] [2022-01-10 07:01:31,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126892986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:31,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:31,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:31,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413419902] [2022-01-10 07:01:31,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:31,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:01:31,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:31,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:01:31,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:01:31,973 INFO L87 Difference]: Start difference. First operand 3069 states and 4216 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2022-01-10 07:01:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:32,039 INFO L93 Difference]: Finished difference Result 5523 states and 7574 transitions. [2022-01-10 07:01:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:01:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) Word has length 145 [2022-01-10 07:01:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:32,046 INFO L225 Difference]: With dead ends: 5523 [2022-01-10 07:01:32,046 INFO L226 Difference]: Without dead ends: 2497 [2022-01-10 07:01:32,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:32,050 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 45 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:32,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 1563 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2022-01-10 07:01:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2497. [2022-01-10 07:01:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 2492 states have (on average 1.369983948635634) internal successors, (3414), 2496 states have internal predecessors, (3414), 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) [2022-01-10 07:01:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3414 transitions. [2022-01-10 07:01:32,117 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3414 transitions. Word has length 145 [2022-01-10 07:01:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:32,117 INFO L470 AbstractCegarLoop]: Abstraction has 2497 states and 3414 transitions. [2022-01-10 07:01:32,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2022-01-10 07:01:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3414 transitions. [2022-01-10 07:01:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 07:01:32,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:32,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:32,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:32,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:32,328 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:32,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash 135876165, now seen corresponding path program 1 times [2022-01-10 07:01:32,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:32,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006129869] [2022-01-10 07:01:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:32,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:32,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:32,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:32,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:01:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:32,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:01:32,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:32,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:32,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:32,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006129869] [2022-01-10 07:01:32,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006129869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:32,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:32,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:01:32,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181306917] [2022-01-10 07:01:32,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:32,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:01:32,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:01:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:01:32,651 INFO L87 Difference]: Start difference. First operand 2497 states and 3414 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-01-10 07:01:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:32,780 INFO L93 Difference]: Finished difference Result 5737 states and 7932 transitions. [2022-01-10 07:01:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:01:32,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) Word has length 153 [2022-01-10 07:01:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:32,790 INFO L225 Difference]: With dead ends: 5737 [2022-01-10 07:01:32,790 INFO L226 Difference]: Without dead ends: 3853 [2022-01-10 07:01:32,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:01:32,793 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 427 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:32,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 1416 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2022-01-10 07:01:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3822. [2022-01-10 07:01:32,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 3817 states have (on average 1.3591826041393764) internal successors, (5188), 3821 states have internal predecessors, (5188), 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) [2022-01-10 07:01:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 5188 transitions. [2022-01-10 07:01:32,905 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 5188 transitions. Word has length 153 [2022-01-10 07:01:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:32,905 INFO L470 AbstractCegarLoop]: Abstraction has 3822 states and 5188 transitions. [2022-01-10 07:01:32,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-01-10 07:01:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 5188 transitions. [2022-01-10 07:01:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 07:01:32,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:32,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:32,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:33,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:33,117 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:33,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:33,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1288470445, now seen corresponding path program 1 times [2022-01-10 07:01:33,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:33,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947026895] [2022-01-10 07:01:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:33,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:33,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:33,119 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:33,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:01:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:33,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:01:33,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:33,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:33,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:33,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947026895] [2022-01-10 07:01:33,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947026895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:33,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:33,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:33,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284231472] [2022-01-10 07:01:33,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:33,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:01:33,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:33,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:01:33,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:33,685 INFO L87 Difference]: Start difference. First operand 3822 states and 5188 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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) [2022-01-10 07:01:33,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:33,880 INFO L93 Difference]: Finished difference Result 5683 states and 7793 transitions. [2022-01-10 07:01:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:01:33,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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) Word has length 153 [2022-01-10 07:01:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:33,891 INFO L225 Difference]: With dead ends: 5683 [2022-01-10 07:01:33,891 INFO L226 Difference]: Without dead ends: 3847 [2022-01-10 07:01:33,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:01:33,894 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 54 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:33,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1580 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 130 Unchecked, 0.1s Time] [2022-01-10 07:01:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2022-01-10 07:01:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 3845. [2022-01-10 07:01:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3840 states have (on average 1.3572916666666666) internal successors, (5212), 3844 states have internal predecessors, (5212), 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) [2022-01-10 07:01:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5212 transitions. [2022-01-10 07:01:33,990 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5212 transitions. Word has length 153 [2022-01-10 07:01:33,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:33,990 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 5212 transitions. [2022-01-10 07:01:33,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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) [2022-01-10 07:01:33,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5212 transitions. [2022-01-10 07:01:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 07:01:34,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:34,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:34,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:34,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:34,221 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:34,222 INFO L85 PathProgramCache]: Analyzing trace with hash 277368878, now seen corresponding path program 1 times [2022-01-10 07:01:34,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:34,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998041701] [2022-01-10 07:01:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:34,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:34,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:34,224 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:34,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:01:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:34,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:01:34,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:34,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:34,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:34,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998041701] [2022-01-10 07:01:34,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998041701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:34,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:34,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:34,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288243986] [2022-01-10 07:01:34,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:34,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:01:34,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:01:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:01:34,615 INFO L87 Difference]: Start difference. First operand 3845 states and 5212 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2022-01-10 07:01:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:34,743 INFO L93 Difference]: Finished difference Result 7785 states and 10515 transitions. [2022-01-10 07:01:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:01:34,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) Word has length 153 [2022-01-10 07:01:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:34,754 INFO L225 Difference]: With dead ends: 7785 [2022-01-10 07:01:34,754 INFO L226 Difference]: Without dead ends: 4025 [2022-01-10 07:01:34,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:34,759 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 1003 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:34,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 1316 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2022-01-10 07:01:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3954. [2022-01-10 07:01:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3954 states, 3949 states have (on average 1.347176500379843) internal successors, (5320), 3953 states have internal predecessors, (5320), 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) [2022-01-10 07:01:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 5320 transitions. [2022-01-10 07:01:34,846 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 5320 transitions. Word has length 153 [2022-01-10 07:01:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:34,846 INFO L470 AbstractCegarLoop]: Abstraction has 3954 states and 5320 transitions. [2022-01-10 07:01:34,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2022-01-10 07:01:34,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 5320 transitions. [2022-01-10 07:01:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 07:01:34,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:34,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:34,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:35,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:35,057 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:35,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:35,058 INFO L85 PathProgramCache]: Analyzing trace with hash 113029646, now seen corresponding path program 1 times [2022-01-10 07:01:35,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:35,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057685876] [2022-01-10 07:01:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:35,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:35,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:35,076 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:35,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:01:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:35,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:01:35,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:35,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:35,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:35,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057685876] [2022-01-10 07:01:35,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057685876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:35,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:35,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:35,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590372947] [2022-01-10 07:01:35,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:35,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:01:35,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:01:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:01:35,407 INFO L87 Difference]: Start difference. First operand 3954 states and 5320 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2022-01-10 07:01:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:35,566 INFO L93 Difference]: Finished difference Result 10011 states and 13444 transitions. [2022-01-10 07:01:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:01:35,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) Word has length 154 [2022-01-10 07:01:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:35,578 INFO L225 Difference]: With dead ends: 10011 [2022-01-10 07:01:35,579 INFO L226 Difference]: Without dead ends: 6211 [2022-01-10 07:01:35,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:35,584 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 1055 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:35,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 1318 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2022-01-10 07:01:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 6180. [2022-01-10 07:01:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6180 states, 6175 states have (on average 1.325344129554656) internal successors, (8184), 6179 states have internal predecessors, (8184), 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) [2022-01-10 07:01:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6180 states to 6180 states and 8184 transitions. [2022-01-10 07:01:35,758 INFO L78 Accepts]: Start accepts. Automaton has 6180 states and 8184 transitions. Word has length 154 [2022-01-10 07:01:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:35,760 INFO L470 AbstractCegarLoop]: Abstraction has 6180 states and 8184 transitions. [2022-01-10 07:01:35,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2022-01-10 07:01:35,761 INFO L276 IsEmpty]: Start isEmpty. Operand 6180 states and 8184 transitions. [2022-01-10 07:01:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 07:01:35,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:35,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:35,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:35,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:35,976 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1317656548, now seen corresponding path program 1 times [2022-01-10 07:01:35,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:35,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809511697] [2022-01-10 07:01:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:35,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:35,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:35,978 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:35,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:01:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:36,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:01:36,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:36,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:36,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:36,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809511697] [2022-01-10 07:01:36,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809511697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:36,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:36,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:36,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899869617] [2022-01-10 07:01:36,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:36,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:01:36,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:36,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:01:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:01:36,289 INFO L87 Difference]: Start difference. First operand 6180 states and 8184 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-01-10 07:01:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:36,394 INFO L93 Difference]: Finished difference Result 8679 states and 11520 transitions. [2022-01-10 07:01:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:01:36,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) Word has length 158 [2022-01-10 07:01:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:36,404 INFO L225 Difference]: With dead ends: 8679 [2022-01-10 07:01:36,404 INFO L226 Difference]: Without dead ends: 5355 [2022-01-10 07:01:36,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:36,410 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 23 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:36,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1538 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:01:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5355 states. [2022-01-10 07:01:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5355 to 5355. [2022-01-10 07:01:36,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5355 states, 5350 states have (on average 1.3226168224299066) internal successors, (7076), 5354 states have internal predecessors, (7076), 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) [2022-01-10 07:01:36,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 7076 transitions. [2022-01-10 07:01:36,565 INFO L78 Accepts]: Start accepts. Automaton has 5355 states and 7076 transitions. Word has length 158 [2022-01-10 07:01:36,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:36,565 INFO L470 AbstractCegarLoop]: Abstraction has 5355 states and 7076 transitions. [2022-01-10 07:01:36,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-01-10 07:01:36,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states and 7076 transitions. [2022-01-10 07:01:36,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:01:36,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:36,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:36,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:36,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:36,779 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash -931751433, now seen corresponding path program 1 times [2022-01-10 07:01:36,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:36,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377338727] [2022-01-10 07:01:36,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:36,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:36,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:36,781 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:36,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:01:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:36,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:01:36,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:37,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:37,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:37,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377338727] [2022-01-10 07:01:37,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377338727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:37,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:37,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:01:37,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122792478] [2022-01-10 07:01:37,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:37,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:01:37,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:01:37,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:01:37,320 INFO L87 Difference]: Start difference. First operand 5355 states and 7076 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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) [2022-01-10 07:01:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:37,501 INFO L93 Difference]: Finished difference Result 7165 states and 9572 transitions. [2022-01-10 07:01:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:01:37,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:01:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:37,508 INFO L225 Difference]: With dead ends: 7165 [2022-01-10 07:01:37,509 INFO L226 Difference]: Without dead ends: 5430 [2022-01-10 07:01:37,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:01:37,511 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 66 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:37,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 933 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2022-01-10 07:01:37,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2022-01-10 07:01:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 5385. [2022-01-10 07:01:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 5380 states have (on average 1.3223048327137545) internal successors, (7114), 5384 states have internal predecessors, (7114), 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) [2022-01-10 07:01:37,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 7114 transitions. [2022-01-10 07:01:37,640 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 7114 transitions. Word has length 163 [2022-01-10 07:01:37,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:37,640 INFO L470 AbstractCegarLoop]: Abstraction has 5385 states and 7114 transitions. [2022-01-10 07:01:37,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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) [2022-01-10 07:01:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 7114 transitions. [2022-01-10 07:01:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:01:37,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:37,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:37,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:37,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:37,854 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:37,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1894482062, now seen corresponding path program 1 times [2022-01-10 07:01:37,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:37,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782771581] [2022-01-10 07:01:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:37,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:37,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:37,857 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:37,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:01:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:38,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 07:01:38,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:39,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:39,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:39,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782771581] [2022-01-10 07:01:39,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782771581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:39,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:39,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 07:01:39,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643852161] [2022-01-10 07:01:39,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:39,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 07:01:39,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:39,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 07:01:39,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-01-10 07:01:39,849 INFO L87 Difference]: Start difference. First operand 5385 states and 7114 transitions. Second operand has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 12 states have internal predecessors, (163), 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) [2022-01-10 07:01:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:40,056 INFO L93 Difference]: Finished difference Result 6339 states and 8522 transitions. [2022-01-10 07:01:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:01:40,057 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 12 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:01:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:40,064 INFO L225 Difference]: With dead ends: 6339 [2022-01-10 07:01:40,064 INFO L226 Difference]: Without dead ends: 5608 [2022-01-10 07:01:40,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-10 07:01:40,067 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 103 mSDsluCounter, 4388 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 754 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:40,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 4870 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 754 Unchecked, 0.1s Time] [2022-01-10 07:01:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5608 states. [2022-01-10 07:01:40,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5608 to 5549. [2022-01-10 07:01:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5544 states have (on average 1.3192640692640694) internal successors, (7314), 5548 states have internal predecessors, (7314), 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) [2022-01-10 07:01:40,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 7314 transitions. [2022-01-10 07:01:40,239 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 7314 transitions. Word has length 163 [2022-01-10 07:01:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:40,240 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 7314 transitions. [2022-01-10 07:01:40,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 12 states have internal predecessors, (163), 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) [2022-01-10 07:01:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 7314 transitions. [2022-01-10 07:01:40,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:01:40,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:40,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:40,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 07:01:40,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:40,454 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:40,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1515714180, now seen corresponding path program 1 times [2022-01-10 07:01:40,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:40,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545067344] [2022-01-10 07:01:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:40,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:40,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:40,456 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:40,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:01:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:40,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 07:01:40,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:43,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:43,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:43,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545067344] [2022-01-10 07:01:43,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545067344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:43,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:43,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 07:01:43,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117126220] [2022-01-10 07:01:43,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:43,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 07:01:43,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:43,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 07:01:43,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:01:43,266 INFO L87 Difference]: Start difference. First operand 5549 states and 7314 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2022-01-10 07:01:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:43,511 INFO L93 Difference]: Finished difference Result 6965 states and 9267 transitions. [2022-01-10 07:01:43,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:01:43,512 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:01:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:43,551 INFO L225 Difference]: With dead ends: 6965 [2022-01-10 07:01:43,552 INFO L226 Difference]: Without dead ends: 6280 [2022-01-10 07:01:43,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:01:43,554 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 193 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:43,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 2324 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 79 Unchecked, 0.0s Time] [2022-01-10 07:01:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2022-01-10 07:01:43,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 5984. [2022-01-10 07:01:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5979 states have (on average 1.3109215587890952) internal successors, (7838), 5983 states have internal predecessors, (7838), 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) [2022-01-10 07:01:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 7838 transitions. [2022-01-10 07:01:43,731 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 7838 transitions. Word has length 163 [2022-01-10 07:01:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:43,732 INFO L470 AbstractCegarLoop]: Abstraction has 5984 states and 7838 transitions. [2022-01-10 07:01:43,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2022-01-10 07:01:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 7838 transitions. [2022-01-10 07:01:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:01:43,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:43,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:43,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 07:01:43,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:43,946 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:43,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1819035089, now seen corresponding path program 1 times [2022-01-10 07:01:43,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:43,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713744407] [2022-01-10 07:01:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:43,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:43,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:43,951 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:43,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:01:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:44,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 07:01:44,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:45,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:45,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:45,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713744407] [2022-01-10 07:01:45,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713744407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:45,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:45,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 07:01:45,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146511244] [2022-01-10 07:01:45,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:45,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 07:01:45,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:45,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 07:01:45,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-01-10 07:01:45,976 INFO L87 Difference]: Start difference. First operand 5984 states and 7838 transitions. Second operand has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 12 states have internal predecessors, (163), 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) [2022-01-10 07:01:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:46,162 INFO L93 Difference]: Finished difference Result 6963 states and 9289 transitions. [2022-01-10 07:01:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:01:46,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 12 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:01:46,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:46,171 INFO L225 Difference]: With dead ends: 6963 [2022-01-10 07:01:46,171 INFO L226 Difference]: Without dead ends: 6051 [2022-01-10 07:01:46,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-10 07:01:46,173 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 123 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:46,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 3393 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 377 Unchecked, 0.1s Time] [2022-01-10 07:01:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2022-01-10 07:01:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 6000. [2022-01-10 07:01:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 5995 states have (on average 1.310091743119266) internal successors, (7854), 5999 states have internal predecessors, (7854), 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) [2022-01-10 07:01:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 7854 transitions. [2022-01-10 07:01:46,409 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 7854 transitions. Word has length 163 [2022-01-10 07:01:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:46,409 INFO L470 AbstractCegarLoop]: Abstraction has 6000 states and 7854 transitions. [2022-01-10 07:01:46,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 12 states have internal predecessors, (163), 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) [2022-01-10 07:01:46,409 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 7854 transitions. [2022-01-10 07:01:46,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:01:46,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:46,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:46,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:46,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:46,625 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1744705706, now seen corresponding path program 1 times [2022-01-10 07:01:46,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:46,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190451413] [2022-01-10 07:01:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:46,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:46,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:46,627 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:46,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:01:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:46,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 07:01:46,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:49,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:49,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:49,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190451413] [2022-01-10 07:01:49,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190451413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:49,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:49,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 07:01:49,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981496036] [2022-01-10 07:01:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:49,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 07:01:49,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 07:01:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:01:49,398 INFO L87 Difference]: Start difference. First operand 6000 states and 7854 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2022-01-10 07:01:49,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:49,608 INFO L93 Difference]: Finished difference Result 7730 states and 10205 transitions. [2022-01-10 07:01:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:01:49,608 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:01:49,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:49,619 INFO L225 Difference]: With dead ends: 7730 [2022-01-10 07:01:49,619 INFO L226 Difference]: Without dead ends: 7020 [2022-01-10 07:01:49,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-10 07:01:49,622 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 84 mSDsluCounter, 3697 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:49,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 4208 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 315 Unchecked, 0.0s Time] [2022-01-10 07:01:49,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2022-01-10 07:01:49,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 6755. [2022-01-10 07:01:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6755 states, 6750 states have (on average 1.300148148148148) internal successors, (8776), 6754 states have internal predecessors, (8776), 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) [2022-01-10 07:01:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6755 states to 6755 states and 8776 transitions. [2022-01-10 07:01:49,832 INFO L78 Accepts]: Start accepts. Automaton has 6755 states and 8776 transitions. Word has length 163 [2022-01-10 07:01:49,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:49,832 INFO L470 AbstractCegarLoop]: Abstraction has 6755 states and 8776 transitions. [2022-01-10 07:01:49,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2022-01-10 07:01:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6755 states and 8776 transitions. [2022-01-10 07:01:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:01:49,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:49,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:49,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-01-10 07:01:50,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:50,060 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:50,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:50,061 INFO L85 PathProgramCache]: Analyzing trace with hash 157079042, now seen corresponding path program 1 times [2022-01-10 07:01:50,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:50,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162369929] [2022-01-10 07:01:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:50,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:50,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:50,063 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:50,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:01:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:50,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 07:01:50,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:54,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:54,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:54,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162369929] [2022-01-10 07:01:54,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162369929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:54,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:54,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-10 07:01:54,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631311718] [2022-01-10 07:01:54,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:54,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 07:01:54,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:54,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 07:01:54,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-10 07:01:54,754 INFO L87 Difference]: Start difference. First operand 6755 states and 8776 transitions. Second operand has 22 states, 22 states have (on average 7.409090909090909) internal successors, (163), 22 states have internal predecessors, (163), 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) [2022-01-10 07:01:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:54,988 INFO L93 Difference]: Finished difference Result 7299 states and 9474 transitions. [2022-01-10 07:01:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 07:01:54,988 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.409090909090909) internal successors, (163), 22 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:01:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:54,998 INFO L225 Difference]: With dead ends: 7299 [2022-01-10 07:01:54,998 INFO L226 Difference]: Without dead ends: 7295 [2022-01-10 07:01:55,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-01-10 07:01:55,001 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 101 mSDsluCounter, 7687 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 8174 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1168 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:55,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 8174 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 1168 Unchecked, 0.0s Time] [2022-01-10 07:01:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7295 states. [2022-01-10 07:01:55,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7295 to 6991. [2022-01-10 07:01:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 6986 states have (on average 1.2981677640996279) internal successors, (9069), 6990 states have internal predecessors, (9069), 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) [2022-01-10 07:01:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 9069 transitions. [2022-01-10 07:01:55,320 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 9069 transitions. Word has length 163 [2022-01-10 07:01:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:55,321 INFO L470 AbstractCegarLoop]: Abstraction has 6991 states and 9069 transitions. [2022-01-10 07:01:55,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.409090909090909) internal successors, (163), 22 states have internal predecessors, (163), 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) [2022-01-10 07:01:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 9069 transitions. [2022-01-10 07:01:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:01:55,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:55,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:55,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:55,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:55,542 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:55,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash -674950275, now seen corresponding path program 1 times [2022-01-10 07:01:55,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:55,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526221613] [2022-01-10 07:01:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:55,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:55,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:55,544 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:55,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:01:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:55,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 07:01:55,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:01:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:01:56,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:01:56,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:01:56,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526221613] [2022-01-10 07:01:56,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526221613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:01:56,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:01:56,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 07:01:56,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913895731] [2022-01-10 07:01:56,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:01:56,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 07:01:56,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:01:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 07:01:56,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:01:56,941 INFO L87 Difference]: Start difference. First operand 6991 states and 9069 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2022-01-10 07:01:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:01:57,153 INFO L93 Difference]: Finished difference Result 7883 states and 10201 transitions. [2022-01-10 07:01:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:01:57,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:01:57,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:01:57,183 INFO L225 Difference]: With dead ends: 7883 [2022-01-10 07:01:57,183 INFO L226 Difference]: Without dead ends: 7879 [2022-01-10 07:01:57,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-10 07:01:57,187 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 123 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:01:57,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 3579 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 304 Unchecked, 0.0s Time] [2022-01-10 07:01:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7879 states. [2022-01-10 07:01:57,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7879 to 7371. [2022-01-10 07:01:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7371 states, 7366 states have (on average 1.295275590551181) internal successors, (9541), 7370 states have internal predecessors, (9541), 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) [2022-01-10 07:01:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7371 states to 7371 states and 9541 transitions. [2022-01-10 07:01:57,439 INFO L78 Accepts]: Start accepts. Automaton has 7371 states and 9541 transitions. Word has length 163 [2022-01-10 07:01:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:01:57,439 INFO L470 AbstractCegarLoop]: Abstraction has 7371 states and 9541 transitions. [2022-01-10 07:01:57,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2022-01-10 07:01:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7371 states and 9541 transitions. [2022-01-10 07:01:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:01:57,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:01:57,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:01:57,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:01:57,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:01:57,653 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:01:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:01:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1735613534, now seen corresponding path program 1 times [2022-01-10 07:01:57,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:01:57,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743251077] [2022-01-10 07:01:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:01:57,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:01:57,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:01:57,656 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:01:57,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:01:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:01:57,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 07:01:57,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:00,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:00,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:00,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743251077] [2022-01-10 07:02:00,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743251077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:00,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:00,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 07:02:00,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875638852] [2022-01-10 07:02:00,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:00,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 07:02:00,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:00,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 07:02:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:02:00,429 INFO L87 Difference]: Start difference. First operand 7371 states and 9541 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2022-01-10 07:02:00,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:00,769 INFO L93 Difference]: Finished difference Result 7743 states and 10016 transitions. [2022-01-10 07:02:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:02:00,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:00,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:00,782 INFO L225 Difference]: With dead ends: 7743 [2022-01-10 07:02:00,782 INFO L226 Difference]: Without dead ends: 7726 [2022-01-10 07:02:00,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-10 07:02:00,787 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 88 mSDsluCounter, 3281 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 3792 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:00,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 3792 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 313 Unchecked, 0.0s Time] [2022-01-10 07:02:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7726 states. [2022-01-10 07:02:01,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7726 to 7453. [2022-01-10 07:02:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7453 states, 7448 states have (on average 1.295515574650913) internal successors, (9649), 7452 states have internal predecessors, (9649), 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) [2022-01-10 07:02:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7453 states to 7453 states and 9649 transitions. [2022-01-10 07:02:01,180 INFO L78 Accepts]: Start accepts. Automaton has 7453 states and 9649 transitions. Word has length 163 [2022-01-10 07:02:01,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:01,181 INFO L470 AbstractCegarLoop]: Abstraction has 7453 states and 9649 transitions. [2022-01-10 07:02:01,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2022-01-10 07:02:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 7453 states and 9649 transitions. [2022-01-10 07:02:01,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:01,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:01,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:01,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:02:01,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:01,399 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:01,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1635941085, now seen corresponding path program 1 times [2022-01-10 07:02:01,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:01,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590299807] [2022-01-10 07:02:01,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:01,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:01,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:01,402 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:01,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:02:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:01,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:02:01,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:02,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:02,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:02,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590299807] [2022-01-10 07:02:02,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590299807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:02,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:02,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:02:02,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713972402] [2022-01-10 07:02:02,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:02,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 07:02:02,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:02,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 07:02:02,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:02:02,595 INFO L87 Difference]: Start difference. First operand 7453 states and 9649 transitions. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 9 states have internal predecessors, (163), 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) [2022-01-10 07:02:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:02,878 INFO L93 Difference]: Finished difference Result 9224 states and 12082 transitions. [2022-01-10 07:02:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:02:02,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 9 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:02,890 INFO L225 Difference]: With dead ends: 9224 [2022-01-10 07:02:02,891 INFO L226 Difference]: Without dead ends: 7782 [2022-01-10 07:02:02,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:02:02,896 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 119 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:02,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 2418 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 263 Unchecked, 0.1s Time] [2022-01-10 07:02:02,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7782 states. [2022-01-10 07:02:03,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7782 to 7741. [2022-01-10 07:02:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7741 states, 7736 states have (on average 1.2905894519131333) internal successors, (9984), 7740 states have internal predecessors, (9984), 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) [2022-01-10 07:02:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7741 states to 7741 states and 9984 transitions. [2022-01-10 07:02:03,174 INFO L78 Accepts]: Start accepts. Automaton has 7741 states and 9984 transitions. Word has length 163 [2022-01-10 07:02:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:03,174 INFO L470 AbstractCegarLoop]: Abstraction has 7741 states and 9984 transitions. [2022-01-10 07:02:03,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 9 states have internal predecessors, (163), 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) [2022-01-10 07:02:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 7741 states and 9984 transitions. [2022-01-10 07:02:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:03,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:03,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:03,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:02:03,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:03,390 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:03,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:03,390 INFO L85 PathProgramCache]: Analyzing trace with hash 52417718, now seen corresponding path program 1 times [2022-01-10 07:02:03,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:03,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770018785] [2022-01-10 07:02:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:03,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:03,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:03,393 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:03,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:02:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:03,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 07:02:03,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:04,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:04,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:04,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770018785] [2022-01-10 07:02:04,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770018785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:04,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:04,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:02:04,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113770223] [2022-01-10 07:02:04,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:04,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 07:02:04,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:04,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 07:02:04,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:02:04,492 INFO L87 Difference]: Start difference. First operand 7741 states and 9984 transitions. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 9 states have internal predecessors, (163), 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) [2022-01-10 07:02:04,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:04,773 INFO L93 Difference]: Finished difference Result 9112 states and 11950 transitions. [2022-01-10 07:02:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:02:04,774 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 9 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:04,781 INFO L225 Difference]: With dead ends: 9112 [2022-01-10 07:02:04,781 INFO L226 Difference]: Without dead ends: 7782 [2022-01-10 07:02:04,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:02:04,784 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 121 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:04,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 1562 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 53 Unchecked, 0.1s Time] [2022-01-10 07:02:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7782 states. [2022-01-10 07:02:04,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7782 to 7741. [2022-01-10 07:02:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7741 states, 7736 states have (on average 1.2900723888314374) internal successors, (9980), 7740 states have internal predecessors, (9980), 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) [2022-01-10 07:02:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7741 states to 7741 states and 9980 transitions. [2022-01-10 07:02:04,997 INFO L78 Accepts]: Start accepts. Automaton has 7741 states and 9980 transitions. Word has length 163 [2022-01-10 07:02:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:04,998 INFO L470 AbstractCegarLoop]: Abstraction has 7741 states and 9980 transitions. [2022-01-10 07:02:04,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 9 states have internal predecessors, (163), 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) [2022-01-10 07:02:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7741 states and 9980 transitions. [2022-01-10 07:02:05,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:05,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:05,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:05,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:02:05,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:05,213 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1234676296, now seen corresponding path program 1 times [2022-01-10 07:02:05,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:05,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474113693] [2022-01-10 07:02:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:05,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:05,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:05,216 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:05,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:02:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:05,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 07:02:05,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:06,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:06,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:06,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474113693] [2022-01-10 07:02:06,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474113693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:06,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:06,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-10 07:02:06,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957738215] [2022-01-10 07:02:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:06,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 07:02:06,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 07:02:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-01-10 07:02:06,862 INFO L87 Difference]: Start difference. First operand 7741 states and 9980 transitions. Second operand has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 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) [2022-01-10 07:02:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:07,285 INFO L93 Difference]: Finished difference Result 9211 states and 12016 transitions. [2022-01-10 07:02:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 07:02:07,285 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:07,298 INFO L225 Difference]: With dead ends: 9211 [2022-01-10 07:02:07,298 INFO L226 Difference]: Without dead ends: 8316 [2022-01-10 07:02:07,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:02:07,304 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 254 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:07,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 3150 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 124 Unchecked, 0.1s Time] [2022-01-10 07:02:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8316 states. [2022-01-10 07:02:07,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8316 to 8009. [2022-01-10 07:02:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8009 states, 8004 states have (on average 1.2861069465267367) internal successors, (10294), 8008 states have internal predecessors, (10294), 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) [2022-01-10 07:02:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8009 states to 8009 states and 10294 transitions. [2022-01-10 07:02:07,708 INFO L78 Accepts]: Start accepts. Automaton has 8009 states and 10294 transitions. Word has length 163 [2022-01-10 07:02:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:07,709 INFO L470 AbstractCegarLoop]: Abstraction has 8009 states and 10294 transitions. [2022-01-10 07:02:07,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 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) [2022-01-10 07:02:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8009 states and 10294 transitions. [2022-01-10 07:02:07,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:07,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:07,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:07,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:02:07,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:07,923 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:07,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1581428957, now seen corresponding path program 1 times [2022-01-10 07:02:07,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:07,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994740719] [2022-01-10 07:02:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:07,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:07,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:07,936 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:07,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:02:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:08,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:02:08,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:08,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:08,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:08,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994740719] [2022-01-10 07:02:08,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994740719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:08,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:08,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:02:08,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182610407] [2022-01-10 07:02:08,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:08,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:02:08,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:02:08,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:02:08,651 INFO L87 Difference]: Start difference. First operand 8009 states and 10294 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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) [2022-01-10 07:02:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:09,043 INFO L93 Difference]: Finished difference Result 9476 states and 12359 transitions. [2022-01-10 07:02:09,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:02:09,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:09,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:09,054 INFO L225 Difference]: With dead ends: 9476 [2022-01-10 07:02:09,054 INFO L226 Difference]: Without dead ends: 8115 [2022-01-10 07:02:09,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:02:09,068 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 111 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:09,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 1294 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-01-10 07:02:09,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2022-01-10 07:02:09,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 8075. [2022-01-10 07:02:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8075 states, 8070 states have (on average 1.2845105328376705) internal successors, (10366), 8074 states have internal predecessors, (10366), 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) [2022-01-10 07:02:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8075 states to 8075 states and 10366 transitions. [2022-01-10 07:02:09,477 INFO L78 Accepts]: Start accepts. Automaton has 8075 states and 10366 transitions. Word has length 163 [2022-01-10 07:02:09,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:09,480 INFO L470 AbstractCegarLoop]: Abstraction has 8075 states and 10366 transitions. [2022-01-10 07:02:09,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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) [2022-01-10 07:02:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 8075 states and 10366 transitions. [2022-01-10 07:02:09,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:09,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:09,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:09,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:02:09,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:09,691 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:09,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:09,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1636002178, now seen corresponding path program 1 times [2022-01-10 07:02:09,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:09,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132962264] [2022-01-10 07:02:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:09,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:09,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:09,693 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:09,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:02:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:09,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:02:09,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:10,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:10,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:10,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132962264] [2022-01-10 07:02:10,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132962264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:10,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:10,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:02:10,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747940657] [2022-01-10 07:02:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:10,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:02:10,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:10,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:02:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:02:10,592 INFO L87 Difference]: Start difference. First operand 8075 states and 10366 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 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) [2022-01-10 07:02:10,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:10,853 INFO L93 Difference]: Finished difference Result 9271 states and 12075 transitions. [2022-01-10 07:02:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:02:10,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:10,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:10,862 INFO L225 Difference]: With dead ends: 9271 [2022-01-10 07:02:10,862 INFO L226 Difference]: Without dead ends: 8359 [2022-01-10 07:02:10,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:02:10,883 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 111 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:10,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 2889 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 314 Unchecked, 0.0s Time] [2022-01-10 07:02:10,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8359 states. [2022-01-10 07:02:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8359 to 8306. [2022-01-10 07:02:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8306 states, 8301 states have (on average 1.2820142151548006) internal successors, (10642), 8305 states have internal predecessors, (10642), 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) [2022-01-10 07:02:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8306 states to 8306 states and 10642 transitions. [2022-01-10 07:02:11,138 INFO L78 Accepts]: Start accepts. Automaton has 8306 states and 10642 transitions. Word has length 163 [2022-01-10 07:02:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:11,139 INFO L470 AbstractCegarLoop]: Abstraction has 8306 states and 10642 transitions. [2022-01-10 07:02:11,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 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) [2022-01-10 07:02:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 8306 states and 10642 transitions. [2022-01-10 07:02:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:11,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:11,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:11,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:02:11,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:11,354 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:11,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:11,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1927738617, now seen corresponding path program 1 times [2022-01-10 07:02:11,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:11,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702681346] [2022-01-10 07:02:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:11,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:11,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:11,357 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:11,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:02:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:11,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 07:02:11,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:12,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:12,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:12,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702681346] [2022-01-10 07:02:12,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702681346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:12,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:12,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 07:02:12,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85439834] [2022-01-10 07:02:12,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:12,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 07:02:12,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 07:02:12,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-10 07:02:12,119 INFO L87 Difference]: Start difference. First operand 8306 states and 10642 transitions. Second operand has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 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) [2022-01-10 07:02:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:13,791 INFO L93 Difference]: Finished difference Result 22353 states and 30571 transitions. [2022-01-10 07:02:13,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 07:02:13,791 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:13,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:13,821 INFO L225 Difference]: With dead ends: 22353 [2022-01-10 07:02:13,821 INFO L226 Difference]: Without dead ends: 20907 [2022-01-10 07:02:13,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2022-01-10 07:02:13,831 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 2819 mSDsluCounter, 6337 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 7098 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 591 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:13,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2819 Valid, 7098 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1208 Invalid, 0 Unknown, 591 Unchecked, 0.8s Time] [2022-01-10 07:02:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20907 states. [2022-01-10 07:02:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20907 to 10564. [2022-01-10 07:02:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10564 states, 10559 states have (on average 1.2702907472298512) internal successors, (13413), 10563 states have internal predecessors, (13413), 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) [2022-01-10 07:02:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10564 states to 10564 states and 13413 transitions. [2022-01-10 07:02:14,340 INFO L78 Accepts]: Start accepts. Automaton has 10564 states and 13413 transitions. Word has length 163 [2022-01-10 07:02:14,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:14,340 INFO L470 AbstractCegarLoop]: Abstraction has 10564 states and 13413 transitions. [2022-01-10 07:02:14,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 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) [2022-01-10 07:02:14,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10564 states and 13413 transitions. [2022-01-10 07:02:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:14,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:14,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:14,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:02:14,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:14,560 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:14,560 INFO L85 PathProgramCache]: Analyzing trace with hash 448480916, now seen corresponding path program 1 times [2022-01-10 07:02:14,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:14,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117001708] [2022-01-10 07:02:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:14,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:14,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:14,562 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:14,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:02:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:14,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 07:02:14,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:15,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:15,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:15,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117001708] [2022-01-10 07:02:15,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117001708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:15,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:15,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 07:02:15,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480200270] [2022-01-10 07:02:15,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:15,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 07:02:15,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 07:02:15,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-01-10 07:02:15,949 INFO L87 Difference]: Start difference. First operand 10564 states and 13413 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2022-01-10 07:02:17,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:17,384 INFO L93 Difference]: Finished difference Result 24151 states and 32398 transitions. [2022-01-10 07:02:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 07:02:17,384 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:17,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:17,411 INFO L225 Difference]: With dead ends: 24151 [2022-01-10 07:02:17,411 INFO L226 Difference]: Without dead ends: 22403 [2022-01-10 07:02:17,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-01-10 07:02:17,419 INFO L933 BasicCegarLoop]: 1143 mSDtfsCounter, 1550 mSDsluCounter, 6050 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 7193 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 743 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:17,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 7193 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 939 Invalid, 0 Unknown, 743 Unchecked, 0.5s Time] [2022-01-10 07:02:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22403 states. [2022-01-10 07:02:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22403 to 19829. [2022-01-10 07:02:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19829 states, 19824 states have (on average 1.3196630347054077) internal successors, (26161), 19828 states have internal predecessors, (26161), 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) [2022-01-10 07:02:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19829 states to 19829 states and 26161 transitions. [2022-01-10 07:02:18,480 INFO L78 Accepts]: Start accepts. Automaton has 19829 states and 26161 transitions. Word has length 163 [2022-01-10 07:02:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:18,481 INFO L470 AbstractCegarLoop]: Abstraction has 19829 states and 26161 transitions. [2022-01-10 07:02:18,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2022-01-10 07:02:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 19829 states and 26161 transitions. [2022-01-10 07:02:18,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:18,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:18,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:18,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:02:18,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:18,703 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash 858817185, now seen corresponding path program 1 times [2022-01-10 07:02:18,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:18,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125307395] [2022-01-10 07:02:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:18,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:18,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:18,705 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:18,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:02:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:18,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:02:18,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:19,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:19,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:19,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125307395] [2022-01-10 07:02:19,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125307395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:19,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:19,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:02:19,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179593682] [2022-01-10 07:02:19,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:19,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:02:19,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:19,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:02:19,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:02:19,413 INFO L87 Difference]: Start difference. First operand 19829 states and 26161 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 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) [2022-01-10 07:02:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:20,560 INFO L93 Difference]: Finished difference Result 23958 states and 32016 transitions. [2022-01-10 07:02:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:02:20,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:20,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:20,584 INFO L225 Difference]: With dead ends: 23958 [2022-01-10 07:02:20,584 INFO L226 Difference]: Without dead ends: 23167 [2022-01-10 07:02:20,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:02:20,589 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 329 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:20,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 3086 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 276 Unchecked, 0.1s Time] [2022-01-10 07:02:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23167 states. [2022-01-10 07:02:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23167 to 21240. [2022-01-10 07:02:22,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21240 states, 21235 states have (on average 1.3111372733694373) internal successors, (27842), 21239 states have internal predecessors, (27842), 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) [2022-01-10 07:02:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 27842 transitions. [2022-01-10 07:02:22,066 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 27842 transitions. Word has length 163 [2022-01-10 07:02:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:22,067 INFO L470 AbstractCegarLoop]: Abstraction has 21240 states and 27842 transitions. [2022-01-10 07:02:22,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 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) [2022-01-10 07:02:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 27842 transitions. [2022-01-10 07:02:22,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:22,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:22,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:22,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 07:02:22,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:22,301 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:22,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:22,302 INFO L85 PathProgramCache]: Analyzing trace with hash -859367858, now seen corresponding path program 1 times [2022-01-10 07:02:22,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:22,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934557175] [2022-01-10 07:02:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:22,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:22,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:22,303 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:22,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:02:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:22,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 07:02:22,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:25,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:25,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:25,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934557175] [2022-01-10 07:02:25,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934557175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:25,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:25,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-10 07:02:25,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473314730] [2022-01-10 07:02:25,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:25,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 07:02:25,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 07:02:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-10 07:02:25,685 INFO L87 Difference]: Start difference. First operand 21240 states and 27842 transitions. Second operand has 21 states, 21 states have (on average 7.761904761904762) internal successors, (163), 21 states have internal predecessors, (163), 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) [2022-01-10 07:02:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:27,498 INFO L93 Difference]: Finished difference Result 33243 states and 45385 transitions. [2022-01-10 07:02:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 07:02:27,499 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.761904761904762) internal successors, (163), 21 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:27,541 INFO L225 Difference]: With dead ends: 33243 [2022-01-10 07:02:27,541 INFO L226 Difference]: Without dead ends: 30195 [2022-01-10 07:02:27,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2022-01-10 07:02:27,551 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 1472 mSDsluCounter, 8235 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 9182 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2204 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:27,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1472 Valid, 9182 Invalid, 2243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 2204 Unchecked, 0.0s Time] [2022-01-10 07:02:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30195 states. [2022-01-10 07:02:28,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30195 to 22268. [2022-01-10 07:02:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22268 states, 22263 states have (on average 1.3061132821272965) internal successors, (29078), 22267 states have internal predecessors, (29078), 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) [2022-01-10 07:02:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22268 states to 22268 states and 29078 transitions. [2022-01-10 07:02:28,870 INFO L78 Accepts]: Start accepts. Automaton has 22268 states and 29078 transitions. Word has length 163 [2022-01-10 07:02:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:28,870 INFO L470 AbstractCegarLoop]: Abstraction has 22268 states and 29078 transitions. [2022-01-10 07:02:28,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.761904761904762) internal successors, (163), 21 states have internal predecessors, (163), 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) [2022-01-10 07:02:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 22268 states and 29078 transitions. [2022-01-10 07:02:28,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:28,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:28,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:28,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 07:02:29,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:29,099 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:29,099 INFO L85 PathProgramCache]: Analyzing trace with hash -130615193, now seen corresponding path program 1 times [2022-01-10 07:02:29,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:29,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206975295] [2022-01-10 07:02:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:29,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:29,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:29,102 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:29,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:02:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:29,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:02:29,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:02:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:02:29,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:02:29,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:02:29,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206975295] [2022-01-10 07:02:29,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206975295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:02:29,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:02:29,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:02:29,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555708153] [2022-01-10 07:02:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:02:29,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:02:29,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:02:29,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:02:29,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:02:29,801 INFO L87 Difference]: Start difference. First operand 22268 states and 29078 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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) [2022-01-10 07:02:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:02:31,242 INFO L93 Difference]: Finished difference Result 30252 states and 40337 transitions. [2022-01-10 07:02:31,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:02:31,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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) Word has length 163 [2022-01-10 07:02:31,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:02:31,277 INFO L225 Difference]: With dead ends: 30252 [2022-01-10 07:02:31,277 INFO L226 Difference]: Without dead ends: 26251 [2022-01-10 07:02:31,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:02:31,287 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 371 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:02:31,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1989 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 315 Unchecked, 0.2s Time] [2022-01-10 07:02:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26251 states. [2022-01-10 07:02:32,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26251 to 22376. [2022-01-10 07:02:32,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22376 states, 22371 states have (on average 1.3051271735729293) internal successors, (29197), 22375 states have internal predecessors, (29197), 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) [2022-01-10 07:02:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22376 states to 22376 states and 29197 transitions. [2022-01-10 07:02:32,512 INFO L78 Accepts]: Start accepts. Automaton has 22376 states and 29197 transitions. Word has length 163 [2022-01-10 07:02:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:02:32,513 INFO L470 AbstractCegarLoop]: Abstraction has 22376 states and 29197 transitions. [2022-01-10 07:02:32,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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) [2022-01-10 07:02:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 22376 states and 29197 transitions. [2022-01-10 07:02:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 07:02:32,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:02:32,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:02:32,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 07:02:32,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:02:32,738 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 07:02:32,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:02:32,739 INFO L85 PathProgramCache]: Analyzing trace with hash -850141363, now seen corresponding path program 1 times [2022-01-10 07:02:32,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:02:32,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497986238] [2022-01-10 07:02:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:02:32,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:02:32,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:02:32,740 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:02:32,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:02:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:02:32,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 07:02:32,874 INFO L286 TraceCheckSpWp]: Computing forward predicates...