/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/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:18:20,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:18:20,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:18:20,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:18:20,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:18:20,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:18:20,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:18:20,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:18:20,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:18:20,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:18:20,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:18:20,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:18:20,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:18:20,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:18:20,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:18:20,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:18:20,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:18:20,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:18:20,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:18:20,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:18:20,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:18:20,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:18:20,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:18:20,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:18:20,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:18:20,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:18:20,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:18:20,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:18:20,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:18:20,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:18:20,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:18:20,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:18:20,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:18:20,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:18:20,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:18:20,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:18:20,794 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 08:18:20,815 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:18:20,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:18:20,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:18:20,816 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:18:20,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:18:20,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:18:20,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:18:20,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:18:20,817 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:18:20,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:18:20,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:18:20,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:18:20,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:18:20,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:18:20,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:18:20,817 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:18:20,817 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:18:20,818 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:18:20,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:18:20,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:18:20,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:18:20,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:18:20,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:18:20,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:18:20,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:18:20,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:18:20,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:18:20,818 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:18:20,819 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:18:20,819 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:18:20,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:18:20,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:18:20,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:18:20,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:18:21,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:18:21,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:18:21,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:18:21,028 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:18:21,028 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:18:21,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2022-01-10 08:18:21,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e1bdcdab/8f5fae54a4324c539d61946f46ead1a9/FLAGc730f0802 [2022-01-10 08:18:21,391 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:18:21,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2022-01-10 08:18:21,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e1bdcdab/8f5fae54a4324c539d61946f46ead1a9/FLAGc730f0802 [2022-01-10 08:18:21,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e1bdcdab/8f5fae54a4324c539d61946f46ead1a9 [2022-01-10 08:18:21,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:18:21,806 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:18:21,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:18:21,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:18:21,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:18:21,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:18:21" (1/1) ... [2022-01-10 08:18:21,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525e2365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:21, skipping insertion in model container [2022-01-10 08:18:21,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:18:21" (1/1) ... [2022-01-10 08:18:21,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:18:21,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:18:21,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[913,926] [2022-01-10 08:18:22,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[5977,5990] [2022-01-10 08:18:22,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:18:22,083 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:18:22,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[913,926] [2022-01-10 08:18:22,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-2.c[5977,5990] [2022-01-10 08:18:22,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:18:22,162 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:18:22,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22 WrapperNode [2022-01-10 08:18:22,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:18:22,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:18:22,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:18:22,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:18:22,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (1/1) ... [2022-01-10 08:18:22,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (1/1) ... [2022-01-10 08:18:22,247 INFO L137 Inliner]: procedures = 61, calls = 66, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 678 [2022-01-10 08:18:22,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:18:22,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:18:22,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:18:22,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:18:22,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (1/1) ... [2022-01-10 08:18:22,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (1/1) ... [2022-01-10 08:18:22,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (1/1) ... [2022-01-10 08:18:22,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (1/1) ... [2022-01-10 08:18:22,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (1/1) ... [2022-01-10 08:18:22,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (1/1) ... [2022-01-10 08:18:22,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (1/1) ... [2022-01-10 08:18:22,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:18:22,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:18:22,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:18:22,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:18:22,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (1/1) ... [2022-01-10 08:18:22,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:18:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:18:22,363 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 08:18:22,369 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 08:18:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:18:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 08:18:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 08:18:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-01-10 08:18:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-01-10 08:18:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 08:18:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 08:18:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 08:18:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 08:18:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 08:18:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 08:18:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 08:18:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 08:18:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:18:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 08:18:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 08:18:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 08:18:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 08:18:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:18:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:18:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 08:18:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 08:18:22,458 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:18:22,459 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:18:22,890 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:18:22,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:18:22,902 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-10 08:18:22,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:18:22 BoogieIcfgContainer [2022-01-10 08:18:22,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:18:22,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:18:22,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:18:22,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:18:22,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:18:21" (1/3) ... [2022-01-10 08:18:22,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52283eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:18:22, skipping insertion in model container [2022-01-10 08:18:22,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:18:22" (2/3) ... [2022-01-10 08:18:22,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52283eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:18:22, skipping insertion in model container [2022-01-10 08:18:22,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:18:22" (3/3) ... [2022-01-10 08:18:22,910 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.06.cil-2.c [2022-01-10 08:18:22,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:18:22,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:18:22,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:18:22,962 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 08:18:22,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:18:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 304 states, 266 states have (on average 1.6165413533834587) internal successors, (430), 271 states have internal predecessors, (430), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 08:18:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 08:18:22,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:22,992 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] [2022-01-10 08:18:22,993 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash 241616146, now seen corresponding path program 1 times [2022-01-10 08:18:23,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:23,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150532373] [2022-01-10 08:18:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:23,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:23,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:23,009 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 08:18:23,024 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 08:18:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:23,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:23,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:23,313 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 08:18:23,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:23,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:23,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150532373] [2022-01-10 08:18:23,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150532373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:23,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:23,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:18:23,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504453390] [2022-01-10 08:18:23,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:23,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:23,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:23,344 INFO L87 Difference]: Start difference. First operand has 304 states, 266 states have (on average 1.6165413533834587) internal successors, (430), 271 states have internal predecessors, (430), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:18:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:23,436 INFO L93 Difference]: Finished difference Result 648 states and 1028 transitions. [2022-01-10 08:18:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-01-10 08:18:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:23,449 INFO L225 Difference]: With dead ends: 648 [2022-01-10 08:18:23,450 INFO L226 Difference]: Without dead ends: 353 [2022-01-10 08:18:23,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 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 08:18:23,460 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 432 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:23,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 552 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:23,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-01-10 08:18:23,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2022-01-10 08:18:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 307 states have (on average 1.49185667752443) internal successors, (458), 310 states have internal predecessors, (458), 30 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (32), 28 states have call predecessors, (32), 28 states have call successors, (32) [2022-01-10 08:18:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 520 transitions. [2022-01-10 08:18:23,522 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 520 transitions. Word has length 44 [2022-01-10 08:18:23,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:23,522 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 520 transitions. [2022-01-10 08:18:23,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:18:23,522 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 520 transitions. [2022-01-10 08:18:23,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 08:18:23,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:23,524 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] [2022-01-10 08:18:23,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:23,731 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 08:18:23,732 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:23,732 INFO L85 PathProgramCache]: Analyzing trace with hash 283852217, now seen corresponding path program 1 times [2022-01-10 08:18:23,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:23,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489776557] [2022-01-10 08:18:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:23,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:23,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:23,734 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 08:18:23,736 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 08:18:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:23,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:23,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:23,920 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 08:18:23,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:23,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:23,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489776557] [2022-01-10 08:18:23,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489776557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:23,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:23,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:18:23,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351435969] [2022-01-10 08:18:23,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:23,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:23,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:23,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:23,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:23,933 INFO L87 Difference]: Start difference. First operand 349 states and 520 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:18:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:23,990 INFO L93 Difference]: Finished difference Result 557 states and 808 transitions. [2022-01-10 08:18:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:23,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-01-10 08:18:23,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:23,993 INFO L225 Difference]: With dead ends: 557 [2022-01-10 08:18:23,993 INFO L226 Difference]: Without dead ends: 442 [2022-01-10 08:18:23,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 08:18:23,994 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 62 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:23,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 886 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:23,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-01-10 08:18:24,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 416. [2022-01-10 08:18:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 368 states have (on average 1.4728260869565217) internal successors, (542), 371 states have internal predecessors, (542), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (36), 31 states have call predecessors, (36), 31 states have call successors, (36) [2022-01-10 08:18:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 611 transitions. [2022-01-10 08:18:24,015 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 611 transitions. Word has length 45 [2022-01-10 08:18:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:24,015 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 611 transitions. [2022-01-10 08:18:24,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:18:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 611 transitions. [2022-01-10 08:18:24,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 08:18:24,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:24,017 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] [2022-01-10 08:18:24,026 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 08:18:24,224 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 08:18:24,224 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1000505244, now seen corresponding path program 1 times [2022-01-10 08:18:24,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:24,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809901877] [2022-01-10 08:18:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:24,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:24,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:24,227 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 08:18:24,228 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 08:18:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:24,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:24,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:24,391 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 08:18:24,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:24,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:24,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809901877] [2022-01-10 08:18:24,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809901877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:24,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:24,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:18:24,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071003037] [2022-01-10 08:18:24,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:24,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:24,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:24,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:24,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:24,398 INFO L87 Difference]: Start difference. First operand 416 states and 611 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:18:24,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:24,430 INFO L93 Difference]: Finished difference Result 769 states and 1099 transitions. [2022-01-10 08:18:24,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:24,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-01-10 08:18:24,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:24,435 INFO L225 Difference]: With dead ends: 769 [2022-01-10 08:18:24,435 INFO L226 Difference]: Without dead ends: 587 [2022-01-10 08:18:24,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 08:18:24,438 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 412 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:24,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 532 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:24,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-01-10 08:18:24,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 573. [2022-01-10 08:18:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 507 states have (on average 1.428007889546351) internal successors, (724), 512 states have internal predecessors, (724), 44 states have call successors, (44), 21 states have call predecessors, (44), 20 states have return successors, (52), 40 states have call predecessors, (52), 42 states have call successors, (52) [2022-01-10 08:18:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 820 transitions. [2022-01-10 08:18:24,483 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 820 transitions. Word has length 45 [2022-01-10 08:18:24,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:24,483 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 820 transitions. [2022-01-10 08:18:24,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:18:24,484 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 820 transitions. [2022-01-10 08:18:24,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 08:18:24,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:24,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:18:24,495 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 08:18:24,696 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 08:18:24,696 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:24,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:24,697 INFO L85 PathProgramCache]: Analyzing trace with hash 595494690, now seen corresponding path program 1 times [2022-01-10 08:18:24,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:24,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320842269] [2022-01-10 08:18:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:24,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:24,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:24,698 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 08:18:24,700 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 08:18:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:24,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:24,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:18:24,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:24,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:24,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320842269] [2022-01-10 08:18:24,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320842269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:24,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:24,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:18:24,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635915556] [2022-01-10 08:18:24,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:24,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:24,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:24,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:24,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:24,840 INFO L87 Difference]: Start difference. First operand 573 states and 820 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 08:18:24,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:24,870 INFO L93 Difference]: Finished difference Result 1085 states and 1517 transitions. [2022-01-10 08:18:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:24,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-01-10 08:18:24,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:24,873 INFO L225 Difference]: With dead ends: 1085 [2022-01-10 08:18:24,873 INFO L226 Difference]: Without dead ends: 746 [2022-01-10 08:18:24,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 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 08:18:24,875 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 50 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:24,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 932 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-01-10 08:18:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2022-01-10 08:18:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 658 states have (on average 1.3753799392097263) internal successors, (905), 663 states have internal predecessors, (905), 58 states have call successors, (58), 29 states have call predecessors, (58), 28 states have return successors, (74), 54 states have call predecessors, (74), 56 states have call successors, (74) [2022-01-10 08:18:24,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1037 transitions. [2022-01-10 08:18:24,896 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1037 transitions. Word has length 62 [2022-01-10 08:18:24,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:24,897 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 1037 transitions. [2022-01-10 08:18:24,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 08:18:24,897 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1037 transitions. [2022-01-10 08:18:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 08:18:24,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:24,899 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:18:24,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:25,115 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 08:18:25,115 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1015259381, now seen corresponding path program 1 times [2022-01-10 08:18:25,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:25,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510655297] [2022-01-10 08:18:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:25,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:25,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:25,117 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 08:18:25,119 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 08:18:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:25,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:25,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 08:18:25,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:25,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:25,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510655297] [2022-01-10 08:18:25,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510655297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:25,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:25,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:18:25,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202327174] [2022-01-10 08:18:25,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:25,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:25,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:25,276 INFO L87 Difference]: Start difference. First operand 746 states and 1037 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:18:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:25,316 INFO L93 Difference]: Finished difference Result 1293 states and 1758 transitions. [2022-01-10 08:18:25,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:25,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-01-10 08:18:25,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:25,321 INFO L225 Difference]: With dead ends: 1293 [2022-01-10 08:18:25,321 INFO L226 Difference]: Without dead ends: 873 [2022-01-10 08:18:25,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 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 08:18:25,322 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 399 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:25,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 527 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-01-10 08:18:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2022-01-10 08:18:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 771 states have (on average 1.3450064850843062) internal successors, (1037), 776 states have internal predecessors, (1037), 66 states have call successors, (66), 35 states have call predecessors, (66), 34 states have return successors, (86), 62 states have call predecessors, (86), 64 states have call successors, (86) [2022-01-10 08:18:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1189 transitions. [2022-01-10 08:18:25,352 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1189 transitions. Word has length 67 [2022-01-10 08:18:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:25,352 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1189 transitions. [2022-01-10 08:18:25,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:18:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1189 transitions. [2022-01-10 08:18:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 08:18:25,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:25,354 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:18:25,364 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 08:18:25,564 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 08:18:25,565 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:25,566 INFO L85 PathProgramCache]: Analyzing trace with hash -307618110, now seen corresponding path program 1 times [2022-01-10 08:18:25,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:25,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233169521] [2022-01-10 08:18:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:25,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:25,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:25,567 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 08:18:25,569 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 08:18:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:25,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:25,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 08:18:25,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:25,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:25,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233169521] [2022-01-10 08:18:25,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233169521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:25,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:25,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:18:25,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82627985] [2022-01-10 08:18:25,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:25,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:25,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:25,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:25,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:25,729 INFO L87 Difference]: Start difference. First operand 873 states and 1189 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:18:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:25,775 INFO L93 Difference]: Finished difference Result 1510 states and 2034 transitions. [2022-01-10 08:18:25,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:18:25,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2022-01-10 08:18:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:25,779 INFO L225 Difference]: With dead ends: 1510 [2022-01-10 08:18:25,779 INFO L226 Difference]: Without dead ends: 1016 [2022-01-10 08:18:25,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:25,781 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 50 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:25,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1783 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2022-01-10 08:18:25,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 914. [2022-01-10 08:18:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 810 states have (on average 1.328395061728395) internal successors, (1076), 817 states have internal predecessors, (1076), 66 states have call successors, (66), 35 states have call predecessors, (66), 36 states have return successors, (88), 62 states have call predecessors, (88), 64 states have call successors, (88) [2022-01-10 08:18:25,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1230 transitions. [2022-01-10 08:18:25,827 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1230 transitions. Word has length 68 [2022-01-10 08:18:25,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:25,827 INFO L470 AbstractCegarLoop]: Abstraction has 914 states and 1230 transitions. [2022-01-10 08:18:25,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:18:25,827 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1230 transitions. [2022-01-10 08:18:25,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 08:18:25,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:25,830 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:18:25,853 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 08:18:26,036 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 08:18:26,036 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:26,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:26,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1336977408, now seen corresponding path program 1 times [2022-01-10 08:18:26,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:26,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098123880] [2022-01-10 08:18:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:26,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:26,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:26,052 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 08:18:26,053 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 08:18:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:26,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:26,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:18:26,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:26,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:26,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098123880] [2022-01-10 08:18:26,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098123880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:26,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:26,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:18:26,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109520017] [2022-01-10 08:18:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:26,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:26,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:26,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:26,209 INFO L87 Difference]: Start difference. First operand 914 states and 1230 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:18:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:26,249 INFO L93 Difference]: Finished difference Result 1407 states and 1876 transitions. [2022-01-10 08:18:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:18:26,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2022-01-10 08:18:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:26,253 INFO L225 Difference]: With dead ends: 1407 [2022-01-10 08:18:26,253 INFO L226 Difference]: Without dead ends: 825 [2022-01-10 08:18:26,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:26,256 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 10 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:26,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1755 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-01-10 08:18:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 805. [2022-01-10 08:18:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 715 states have (on average 1.3300699300699301) internal successors, (951), 724 states have internal predecessors, (951), 56 states have call successors, (56), 29 states have call predecessors, (56), 32 states have return successors, (74), 52 states have call predecessors, (74), 54 states have call successors, (74) [2022-01-10 08:18:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1081 transitions. [2022-01-10 08:18:26,278 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1081 transitions. Word has length 68 [2022-01-10 08:18:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:26,279 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1081 transitions. [2022-01-10 08:18:26,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:18:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1081 transitions. [2022-01-10 08:18:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 08:18:26,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:26,280 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:18:26,303 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 08:18:26,486 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 08:18:26,487 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:26,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:26,487 INFO L85 PathProgramCache]: Analyzing trace with hash 712789568, now seen corresponding path program 1 times [2022-01-10 08:18:26,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:26,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703803604] [2022-01-10 08:18:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:26,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:26,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:26,489 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 08:18:26,490 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 08:18:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:26,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:26,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:18:26,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:18:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 08:18:26,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703803604] [2022-01-10 08:18:26,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703803604] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 08:18:26,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 08:18:26,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-01-10 08:18:26,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15867354] [2022-01-10 08:18:26,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:26,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:18:26,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:18:26,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:18:26,752 INFO L87 Difference]: Start difference. First operand 805 states and 1081 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 08:18:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:26,848 INFO L93 Difference]: Finished difference Result 860 states and 1148 transitions. [2022-01-10 08:18:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:18:26,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-01-10 08:18:26,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:26,852 INFO L225 Difference]: With dead ends: 860 [2022-01-10 08:18:26,852 INFO L226 Difference]: Without dead ends: 857 [2022-01-10 08:18:26,853 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 08:18:26,853 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 790 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:26,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 532 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:18:26,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-01-10 08:18:26,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 804. [2022-01-10 08:18:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 715 states have (on average 1.3272727272727274) internal successors, (949), 723 states have internal predecessors, (949), 55 states have call successors, (55), 29 states have call predecessors, (55), 32 states have return successors, (74), 52 states have call predecessors, (74), 54 states have call successors, (74) [2022-01-10 08:18:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1078 transitions. [2022-01-10 08:18:26,875 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1078 transitions. Word has length 68 [2022-01-10 08:18:26,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:26,875 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1078 transitions. [2022-01-10 08:18:26,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 08:18:26,876 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1078 transitions. [2022-01-10 08:18:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 08:18:26,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:26,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:18:26,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 08:18:27,083 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 08:18:27,085 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:27,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:27,085 INFO L85 PathProgramCache]: Analyzing trace with hash 620687216, now seen corresponding path program 1 times [2022-01-10 08:18:27,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:27,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048229809] [2022-01-10 08:18:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:27,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:27,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:27,087 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 08:18:27,088 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 08:18:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:27,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:18:27,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:18:27,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:18:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 08:18:27,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:27,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048229809] [2022-01-10 08:18:27,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048229809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:18:27,635 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:18:27,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2022-01-10 08:18:27,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399989552] [2022-01-10 08:18:27,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:18:27,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:18:27,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:18:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:27,636 INFO L87 Difference]: Start difference. First operand 804 states and 1078 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-10 08:18:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:27,867 INFO L93 Difference]: Finished difference Result 1627 states and 2120 transitions. [2022-01-10 08:18:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:18:27,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2022-01-10 08:18:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:27,872 INFO L225 Difference]: With dead ends: 1627 [2022-01-10 08:18:27,872 INFO L226 Difference]: Without dead ends: 1624 [2022-01-10 08:18:27,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:27,873 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 936 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:27,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 2093 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2022-01-10 08:18:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1153. [2022-01-10 08:18:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1028 states have (on average 1.3044747081712063) internal successors, (1341), 1042 states have internal predecessors, (1341), 74 states have call successors, (74), 42 states have call predecessors, (74), 49 states have return successors, (105), 69 states have call predecessors, (105), 73 states have call successors, (105) [2022-01-10 08:18:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1520 transitions. [2022-01-10 08:18:27,915 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1520 transitions. Word has length 69 [2022-01-10 08:18:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:27,915 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1520 transitions. [2022-01-10 08:18:27,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-10 08:18:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1520 transitions. [2022-01-10 08:18:27,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 08:18:27,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:27,918 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:18:27,941 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 08:18:28,124 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 08:18:28,124 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:28,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:28,125 INFO L85 PathProgramCache]: Analyzing trace with hash 829282060, now seen corresponding path program 2 times [2022-01-10 08:18:28,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:28,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675100244] [2022-01-10 08:18:28,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:18:28,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:28,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:28,138 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 08:18:28,141 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 08:18:28,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 08:18:28,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:18:28,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:28,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 08:18:28,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:28,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:28,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675100244] [2022-01-10 08:18:28,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675100244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:28,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:28,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:18:28,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317870576] [2022-01-10 08:18:28,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:28,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:28,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:28,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:28,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:28,353 INFO L87 Difference]: Start difference. First operand 1153 states and 1520 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 08:18:28,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:28,432 INFO L93 Difference]: Finished difference Result 1794 states and 2337 transitions. [2022-01-10 08:18:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:28,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-01-10 08:18:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:28,438 INFO L225 Difference]: With dead ends: 1794 [2022-01-10 08:18:28,439 INFO L226 Difference]: Without dead ends: 1043 [2022-01-10 08:18:28,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 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 08:18:28,440 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 402 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:28,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 546 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:28,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-01-10 08:18:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1031. [2022-01-10 08:18:28,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 919 states have (on average 1.3046789989118608) internal successors, (1199), 933 states have internal predecessors, (1199), 67 states have call successors, (67), 37 states have call predecessors, (67), 43 states have return successors, (94), 61 states have call predecessors, (94), 66 states have call successors, (94) [2022-01-10 08:18:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1360 transitions. [2022-01-10 08:18:28,525 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1360 transitions. Word has length 88 [2022-01-10 08:18:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:28,525 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1360 transitions. [2022-01-10 08:18:28,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 08:18:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1360 transitions. [2022-01-10 08:18:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 08:18:28,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:28,527 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:18:28,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 08:18:28,734 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 08:18:28,734 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash -469561229, now seen corresponding path program 1 times [2022-01-10 08:18:28,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:28,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389806385] [2022-01-10 08:18:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:28,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:28,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:28,736 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 08:18:28,738 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 08:18:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:28,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:28,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 08:18:28,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:28,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:28,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389806385] [2022-01-10 08:18:28,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389806385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:28,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:28,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:28,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635596576] [2022-01-10 08:18:28,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:28,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:18:28,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:18:28,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:18:28,958 INFO L87 Difference]: Start difference. First operand 1031 states and 1360 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:29,120 INFO L93 Difference]: Finished difference Result 1861 states and 2407 transitions. [2022-01-10 08:18:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:18:29,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-01-10 08:18:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:29,124 INFO L225 Difference]: With dead ends: 1861 [2022-01-10 08:18:29,124 INFO L226 Difference]: Without dead ends: 1064 [2022-01-10 08:18:29,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 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 08:18:29,126 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 549 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:29,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 712 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:18:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-01-10 08:18:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1031. [2022-01-10 08:18:29,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 919 states have (on average 1.2883569096844396) internal successors, (1184), 933 states have internal predecessors, (1184), 67 states have call successors, (67), 37 states have call predecessors, (67), 43 states have return successors, (93), 61 states have call predecessors, (93), 66 states have call successors, (93) [2022-01-10 08:18:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1344 transitions. [2022-01-10 08:18:29,156 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1344 transitions. Word has length 103 [2022-01-10 08:18:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:29,156 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1344 transitions. [2022-01-10 08:18:29,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:29,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1344 transitions. [2022-01-10 08:18:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 08:18:29,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:29,158 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:18:29,167 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 08:18:29,367 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 08:18:29,367 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:29,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1848950371, now seen corresponding path program 1 times [2022-01-10 08:18:29,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:29,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286831500] [2022-01-10 08:18:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:29,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:29,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:29,369 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 08:18:29,371 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 08:18:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:29,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:29,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 08:18:29,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:29,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:29,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286831500] [2022-01-10 08:18:29,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286831500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:29,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:29,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:18:29,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290737160] [2022-01-10 08:18:29,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:29,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:29,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:29,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:29,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:29,565 INFO L87 Difference]: Start difference. First operand 1031 states and 1344 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 08:18:29,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:29,594 INFO L93 Difference]: Finished difference Result 1355 states and 1736 transitions. [2022-01-10 08:18:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:29,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 104 [2022-01-10 08:18:29,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:29,596 INFO L225 Difference]: With dead ends: 1355 [2022-01-10 08:18:29,596 INFO L226 Difference]: Without dead ends: 228 [2022-01-10 08:18:29,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 08:18:29,598 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 55 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:29,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 901 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-01-10 08:18:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-01-10 08:18:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 201 states have (on average 1.5422885572139304) internal successors, (310), 202 states have internal predecessors, (310), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 08:18:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 350 transitions. [2022-01-10 08:18:29,604 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 350 transitions. Word has length 104 [2022-01-10 08:18:29,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:29,604 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 350 transitions. [2022-01-10 08:18:29,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 08:18:29,604 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 350 transitions. [2022-01-10 08:18:29,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:29,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:29,605 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] [2022-01-10 08:18:29,613 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 08:18:29,811 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 08:18:29,812 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:29,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:29,812 INFO L85 PathProgramCache]: Analyzing trace with hash -678480864, now seen corresponding path program 1 times [2022-01-10 08:18:29,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:29,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855188293] [2022-01-10 08:18:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:29,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:29,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:29,813 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 08:18:29,815 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 08:18:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:29,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:29,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:30,031 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 08:18:30,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:30,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:30,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855188293] [2022-01-10 08:18:30,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855188293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:30,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:30,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:18:30,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871457966] [2022-01-10 08:18:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:30,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:30,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:30,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:30,033 INFO L87 Difference]: Start difference. First operand 228 states and 350 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:30,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:30,063 INFO L93 Difference]: Finished difference Result 446 states and 685 transitions. [2022-01-10 08:18:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:30,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:30,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:30,065 INFO L225 Difference]: With dead ends: 446 [2022-01-10 08:18:30,065 INFO L226 Difference]: Without dead ends: 228 [2022-01-10 08:18:30,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 08:18:30,066 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 338 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:30,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 349 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-01-10 08:18:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-01-10 08:18:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 201 states have (on average 1.537313432835821) internal successors, (309), 202 states have internal predecessors, (309), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 08:18:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 349 transitions. [2022-01-10 08:18:30,073 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 349 transitions. Word has length 112 [2022-01-10 08:18:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:30,073 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 349 transitions. [2022-01-10 08:18:30,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 349 transitions. [2022-01-10 08:18:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:30,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:30,074 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] [2022-01-10 08:18:30,083 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 08:18:30,283 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 08:18:30,284 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:30,284 INFO L85 PathProgramCache]: Analyzing trace with hash 628661534, now seen corresponding path program 1 times [2022-01-10 08:18:30,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:30,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139686895] [2022-01-10 08:18:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:30,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:30,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:30,286 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 08:18:30,319 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 08:18:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:30,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:30,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:30,575 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 08:18:30,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:30,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:30,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139686895] [2022-01-10 08:18:30,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139686895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:30,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:30,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:30,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162825065] [2022-01-10 08:18:30,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:30,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:30,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:30,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:30,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:30,577 INFO L87 Difference]: Start difference. First operand 228 states and 349 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:30,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:30,938 INFO L93 Difference]: Finished difference Result 678 states and 1051 transitions. [2022-01-10 08:18:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:18:30,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:30,940 INFO L225 Difference]: With dead ends: 678 [2022-01-10 08:18:30,940 INFO L226 Difference]: Without dead ends: 465 [2022-01-10 08:18:30,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:30,941 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 638 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:30,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 1054 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:18:30,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-01-10 08:18:30,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 448. [2022-01-10 08:18:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 399 states have (on average 1.5513784461152882) internal successors, (619), 401 states have internal predecessors, (619), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 08:18:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 690 transitions. [2022-01-10 08:18:30,955 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 690 transitions. Word has length 112 [2022-01-10 08:18:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:30,955 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 690 transitions. [2022-01-10 08:18:30,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 690 transitions. [2022-01-10 08:18:30,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:30,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:30,956 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] [2022-01-10 08:18:30,987 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 08:18:31,156 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 08:18:31,156 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:31,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1907660194, now seen corresponding path program 1 times [2022-01-10 08:18:31,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:31,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141113121] [2022-01-10 08:18:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:31,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:31,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:31,158 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 08:18:31,159 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 08:18:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:31,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:31,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:31,456 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 08:18:31,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:31,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:31,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141113121] [2022-01-10 08:18:31,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141113121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:31,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:31,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:31,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182097590] [2022-01-10 08:18:31,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:31,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:31,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:31,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:31,458 INFO L87 Difference]: Start difference. First operand 448 states and 690 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:31,621 INFO L93 Difference]: Finished difference Result 881 states and 1364 transitions. [2022-01-10 08:18:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:18:31,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:31,622 INFO L225 Difference]: With dead ends: 881 [2022-01-10 08:18:31,622 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 08:18:31,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:31,625 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 455 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:31,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 694 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:18:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 08:18:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-01-10 08:18:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 399 states have (on average 1.5338345864661653) internal successors, (612), 401 states have internal predecessors, (612), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 08:18:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 683 transitions. [2022-01-10 08:18:31,638 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 683 transitions. Word has length 112 [2022-01-10 08:18:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:31,651 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 683 transitions. [2022-01-10 08:18:31,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 683 transitions. [2022-01-10 08:18:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:31,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:31,652 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] [2022-01-10 08:18:31,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:31,859 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 08:18:31,859 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:31,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:31,859 INFO L85 PathProgramCache]: Analyzing trace with hash 288685280, now seen corresponding path program 1 times [2022-01-10 08:18:31,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:31,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749915308] [2022-01-10 08:18:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:31,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:31,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:31,861 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 08:18:31,862 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 08:18:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:31,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:31,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:32,080 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 08:18:32,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:32,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:32,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749915308] [2022-01-10 08:18:32,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749915308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:32,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:32,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:32,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079938511] [2022-01-10 08:18:32,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:32,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:32,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:32,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:32,082 INFO L87 Difference]: Start difference. First operand 448 states and 683 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:32,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:32,286 INFO L93 Difference]: Finished difference Result 881 states and 1350 transitions. [2022-01-10 08:18:32,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:18:32,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:32,288 INFO L225 Difference]: With dead ends: 881 [2022-01-10 08:18:32,288 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 08:18:32,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:32,289 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 448 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:32,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 687 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 08:18:32,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-01-10 08:18:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 399 states have (on average 1.5162907268170427) internal successors, (605), 401 states have internal predecessors, (605), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 08:18:32,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 676 transitions. [2022-01-10 08:18:32,319 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 676 transitions. Word has length 112 [2022-01-10 08:18:32,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:32,319 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 676 transitions. [2022-01-10 08:18:32,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 676 transitions. [2022-01-10 08:18:32,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:32,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:32,320 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] [2022-01-10 08:18:32,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:32,527 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 08:18:32,527 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:32,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:32,528 INFO L85 PathProgramCache]: Analyzing trace with hash 282817244, now seen corresponding path program 1 times [2022-01-10 08:18:32,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:32,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138558050] [2022-01-10 08:18:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:32,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:32,529 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 08:18:32,530 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 08:18:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:32,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:32,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:32,755 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 08:18:32,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:32,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:32,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138558050] [2022-01-10 08:18:32,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138558050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:32,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:32,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:32,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368372789] [2022-01-10 08:18:32,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:32,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:32,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:32,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:32,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:32,757 INFO L87 Difference]: Start difference. First operand 448 states and 676 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:32,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:32,936 INFO L93 Difference]: Finished difference Result 881 states and 1336 transitions. [2022-01-10 08:18:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:18:32,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:32,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:32,938 INFO L225 Difference]: With dead ends: 881 [2022-01-10 08:18:32,938 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 08:18:32,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:32,939 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 442 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:32,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 680 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 08:18:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-01-10 08:18:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 399 states have (on average 1.4987468671679198) internal successors, (598), 401 states have internal predecessors, (598), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 08:18:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 669 transitions. [2022-01-10 08:18:32,953 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 669 transitions. Word has length 112 [2022-01-10 08:18:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:32,953 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 669 transitions. [2022-01-10 08:18:32,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 669 transitions. [2022-01-10 08:18:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:32,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:32,954 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] [2022-01-10 08:18:32,963 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 08:18:33,161 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 08:18:33,162 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:33,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:33,162 INFO L85 PathProgramCache]: Analyzing trace with hash -271561376, now seen corresponding path program 1 times [2022-01-10 08:18:33,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:33,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829977746] [2022-01-10 08:18:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:33,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:33,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:33,172 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 08:18:33,207 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 08:18:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:33,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:33,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:33,420 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 08:18:33,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:33,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:33,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829977746] [2022-01-10 08:18:33,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829977746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:33,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:33,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:33,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803079818] [2022-01-10 08:18:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:33,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:33,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:33,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:33,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:33,423 INFO L87 Difference]: Start difference. First operand 448 states and 669 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:33,604 INFO L93 Difference]: Finished difference Result 881 states and 1322 transitions. [2022-01-10 08:18:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:18:33,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:33,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:33,605 INFO L225 Difference]: With dead ends: 881 [2022-01-10 08:18:33,605 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 08:18:33,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:33,607 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 436 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:33,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 673 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:33,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 08:18:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-01-10 08:18:33,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 399 states have (on average 1.481203007518797) internal successors, (591), 401 states have internal predecessors, (591), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 08:18:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 662 transitions. [2022-01-10 08:18:33,620 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 662 transitions. Word has length 112 [2022-01-10 08:18:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:33,620 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 662 transitions. [2022-01-10 08:18:33,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:33,621 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 662 transitions. [2022-01-10 08:18:33,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:33,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:33,621 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] [2022-01-10 08:18:33,645 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 08:18:33,828 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 08:18:33,828 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:33,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:33,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1096028764, now seen corresponding path program 1 times [2022-01-10 08:18:33,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:33,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155189857] [2022-01-10 08:18:33,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:33,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:33,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:33,830 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 08:18:33,858 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 08:18:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:33,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:33,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:34,113 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 08:18:34,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:34,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:34,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155189857] [2022-01-10 08:18:34,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155189857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:34,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:34,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:34,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310688415] [2022-01-10 08:18:34,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:34,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:34,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:34,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:34,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:34,115 INFO L87 Difference]: Start difference. First operand 448 states and 662 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:34,317 INFO L93 Difference]: Finished difference Result 881 states and 1308 transitions. [2022-01-10 08:18:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:18:34,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:34,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:34,319 INFO L225 Difference]: With dead ends: 881 [2022-01-10 08:18:34,319 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 08:18:34,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:34,320 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 430 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:34,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 666 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 08:18:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-01-10 08:18:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 399 states have (on average 1.463659147869674) internal successors, (584), 401 states have internal predecessors, (584), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 08:18:34,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 655 transitions. [2022-01-10 08:18:34,333 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 655 transitions. Word has length 112 [2022-01-10 08:18:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:34,333 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 655 transitions. [2022-01-10 08:18:34,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:34,333 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 655 transitions. [2022-01-10 08:18:34,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:34,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:34,334 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] [2022-01-10 08:18:34,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 08:18:34,540 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 08:18:34,541 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:34,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2046444064, now seen corresponding path program 1 times [2022-01-10 08:18:34,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:34,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044749625] [2022-01-10 08:18:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:34,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:34,543 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 08:18:34,544 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 08:18:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:34,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:34,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:34,750 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 08:18:34,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:34,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:34,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044749625] [2022-01-10 08:18:34,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044749625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:34,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:34,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:34,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062539886] [2022-01-10 08:18:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:34,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:34,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:34,751 INFO L87 Difference]: Start difference. First operand 448 states and 655 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:35,027 INFO L93 Difference]: Finished difference Result 989 states and 1460 transitions. [2022-01-10 08:18:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:18:35,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:35,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:35,032 INFO L225 Difference]: With dead ends: 989 [2022-01-10 08:18:35,032 INFO L226 Difference]: Without dead ends: 556 [2022-01-10 08:18:35,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:35,034 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 490 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:35,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 658 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:35,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-10 08:18:35,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2022-01-10 08:18:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 501 states have (on average 1.435129740518962) internal successors, (719), 503 states have internal predecessors, (719), 37 states have call successors, (37), 16 states have call predecessors, (37), 17 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 08:18:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 794 transitions. [2022-01-10 08:18:35,056 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 794 transitions. Word has length 112 [2022-01-10 08:18:35,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:35,056 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 794 transitions. [2022-01-10 08:18:35,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 794 transitions. [2022-01-10 08:18:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:35,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:35,057 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] [2022-01-10 08:18:35,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-01-10 08:18:35,264 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 08:18:35,264 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:35,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:35,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1315869148, now seen corresponding path program 1 times [2022-01-10 08:18:35,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:35,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908091241] [2022-01-10 08:18:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:35,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:35,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:35,266 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 08:18:35,268 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 08:18:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:35,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:35,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:35,470 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 08:18:35,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:35,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:35,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908091241] [2022-01-10 08:18:35,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908091241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:35,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:35,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:35,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815279681] [2022-01-10 08:18:35,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:35,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:35,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:35,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:35,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:35,472 INFO L87 Difference]: Start difference. First operand 556 states and 794 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:35,729 INFO L93 Difference]: Finished difference Result 1205 states and 1738 transitions. [2022-01-10 08:18:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:18:35,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:35,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:35,732 INFO L225 Difference]: With dead ends: 1205 [2022-01-10 08:18:35,732 INFO L226 Difference]: Without dead ends: 664 [2022-01-10 08:18:35,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:35,734 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 483 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:35,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 652 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-01-10 08:18:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2022-01-10 08:18:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 603 states have (on average 1.4096185737976783) internal successors, (850), 605 states have internal predecessors, (850), 39 states have call successors, (39), 20 states have call predecessors, (39), 21 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 08:18:35,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 929 transitions. [2022-01-10 08:18:35,754 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 929 transitions. Word has length 112 [2022-01-10 08:18:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:35,754 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 929 transitions. [2022-01-10 08:18:35,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 929 transitions. [2022-01-10 08:18:35,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:35,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:35,755 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] [2022-01-10 08:18:35,762 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 08:18:35,961 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 08:18:35,962 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1085179679, now seen corresponding path program 1 times [2022-01-10 08:18:35,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:35,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924172988] [2022-01-10 08:18:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:35,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:35,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:35,964 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 08:18:35,965 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 08:18:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:36,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:36,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:36,180 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 08:18:36,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:36,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:36,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924172988] [2022-01-10 08:18:36,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924172988] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:36,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:36,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:36,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453568358] [2022-01-10 08:18:36,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:36,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:36,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:36,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:36,182 INFO L87 Difference]: Start difference. First operand 664 states and 929 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:36,407 INFO L93 Difference]: Finished difference Result 1421 states and 2008 transitions. [2022-01-10 08:18:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:18:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:36,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:36,411 INFO L225 Difference]: With dead ends: 1421 [2022-01-10 08:18:36,411 INFO L226 Difference]: Without dead ends: 772 [2022-01-10 08:18:36,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:36,416 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 477 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:36,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 643 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-01-10 08:18:36,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2022-01-10 08:18:36,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 705 states have (on average 1.3858156028368793) internal successors, (977), 707 states have internal predecessors, (977), 41 states have call successors, (41), 24 states have call predecessors, (41), 25 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 08:18:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1060 transitions. [2022-01-10 08:18:36,475 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1060 transitions. Word has length 112 [2022-01-10 08:18:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:36,475 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 1060 transitions. [2022-01-10 08:18:36,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1060 transitions. [2022-01-10 08:18:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:36,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:36,476 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] [2022-01-10 08:18:36,485 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 08:18:36,686 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 08:18:36,686 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:36,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:36,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1628855648, now seen corresponding path program 1 times [2022-01-10 08:18:36,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:36,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211128384] [2022-01-10 08:18:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:36,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:36,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:36,688 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 08:18:36,708 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 08:18:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:36,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:36,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:36,972 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 08:18:36,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:36,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:36,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211128384] [2022-01-10 08:18:36,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211128384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:36,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:36,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:36,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511178255] [2022-01-10 08:18:36,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:36,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:36,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:36,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:36,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:36,974 INFO L87 Difference]: Start difference. First operand 772 states and 1060 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:37,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:37,258 INFO L93 Difference]: Finished difference Result 1637 states and 2270 transitions. [2022-01-10 08:18:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:18:37,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:37,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:37,262 INFO L225 Difference]: With dead ends: 1637 [2022-01-10 08:18:37,262 INFO L226 Difference]: Without dead ends: 880 [2022-01-10 08:18:37,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:37,266 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 469 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:37,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 636 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-01-10 08:18:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2022-01-10 08:18:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 807 states have (on average 1.3630731102850062) internal successors, (1100), 809 states have internal predecessors, (1100), 43 states have call successors, (43), 28 states have call predecessors, (43), 29 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 08:18:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1187 transitions. [2022-01-10 08:18:37,327 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1187 transitions. Word has length 112 [2022-01-10 08:18:37,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:37,327 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1187 transitions. [2022-01-10 08:18:37,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1187 transitions. [2022-01-10 08:18:37,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:37,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:37,328 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] [2022-01-10 08:18:37,347 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 08:18:37,535 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 08:18:37,535 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash -305199075, now seen corresponding path program 1 times [2022-01-10 08:18:37,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:37,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166231050] [2022-01-10 08:18:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:37,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:37,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:37,537 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 08:18:37,538 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 08:18:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:37,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:37,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:37,737 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 08:18:37,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:37,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:37,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166231050] [2022-01-10 08:18:37,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166231050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:37,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:37,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:37,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255374940] [2022-01-10 08:18:37,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:37,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:37,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:37,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:37,739 INFO L87 Difference]: Start difference. First operand 880 states and 1187 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:38,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:38,038 INFO L93 Difference]: Finished difference Result 1853 states and 2524 transitions. [2022-01-10 08:18:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:18:38,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:38,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:38,041 INFO L225 Difference]: With dead ends: 1853 [2022-01-10 08:18:38,041 INFO L226 Difference]: Without dead ends: 988 [2022-01-10 08:18:38,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:38,043 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 462 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:38,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 629 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-01-10 08:18:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 988. [2022-01-10 08:18:38,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 909 states have (on average 1.341034103410341) internal successors, (1219), 911 states have internal predecessors, (1219), 45 states have call successors, (45), 32 states have call predecessors, (45), 33 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 08:18:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1310 transitions. [2022-01-10 08:18:38,077 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1310 transitions. Word has length 112 [2022-01-10 08:18:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:38,077 INFO L470 AbstractCegarLoop]: Abstraction has 988 states and 1310 transitions. [2022-01-10 08:18:38,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1310 transitions. [2022-01-10 08:18:38,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:38,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:38,078 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] [2022-01-10 08:18:38,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-01-10 08:18:38,285 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 08:18:38,285 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:38,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1442358945, now seen corresponding path program 1 times [2022-01-10 08:18:38,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:38,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962086735] [2022-01-10 08:18:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:38,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:38,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:38,287 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 08:18:38,288 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 08:18:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:38,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:38,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:38,496 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 08:18:38,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:38,496 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:38,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962086735] [2022-01-10 08:18:38,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962086735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:38,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:38,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:38,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11996070] [2022-01-10 08:18:38,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:38,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:38,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:38,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:38,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:38,497 INFO L87 Difference]: Start difference. First operand 988 states and 1310 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:38,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:38,764 INFO L93 Difference]: Finished difference Result 2069 states and 2770 transitions. [2022-01-10 08:18:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:18:38,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:38,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:38,767 INFO L225 Difference]: With dead ends: 2069 [2022-01-10 08:18:38,767 INFO L226 Difference]: Without dead ends: 1096 [2022-01-10 08:18:38,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:38,769 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 455 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:38,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 622 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:38,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-01-10 08:18:38,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1096. [2022-01-10 08:18:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 1011 states have (on average 1.3194856577645895) internal successors, (1334), 1013 states have internal predecessors, (1334), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:18:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1429 transitions. [2022-01-10 08:18:38,836 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1429 transitions. Word has length 112 [2022-01-10 08:18:38,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:38,836 INFO L470 AbstractCegarLoop]: Abstraction has 1096 states and 1429 transitions. [2022-01-10 08:18:38,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:38,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1429 transitions. [2022-01-10 08:18:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:38,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:38,837 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] [2022-01-10 08:18:38,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 08:18:39,044 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 08:18:39,045 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1706293726, now seen corresponding path program 1 times [2022-01-10 08:18:39,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:39,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293002575] [2022-01-10 08:18:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:39,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:39,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:39,046 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 08:18:39,083 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 08:18:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:39,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:39,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:39,247 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 08:18:39,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:39,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:39,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293002575] [2022-01-10 08:18:39,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293002575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:39,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:39,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:18:39,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589264704] [2022-01-10 08:18:39,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:39,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:39,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:39,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:39,249 INFO L87 Difference]: Start difference. First operand 1096 states and 1429 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:39,325 INFO L93 Difference]: Finished difference Result 2358 states and 3101 transitions. [2022-01-10 08:18:39,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:18:39,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:39,329 INFO L225 Difference]: With dead ends: 2358 [2022-01-10 08:18:39,329 INFO L226 Difference]: Without dead ends: 1278 [2022-01-10 08:18:39,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:39,331 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 245 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:39,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1346 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-01-10 08:18:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1102. [2022-01-10 08:18:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1017 states have (on average 1.3058013765978367) internal successors, (1328), 1019 states have internal predecessors, (1328), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:18:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1423 transitions. [2022-01-10 08:18:39,373 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1423 transitions. Word has length 112 [2022-01-10 08:18:39,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:39,373 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1423 transitions. [2022-01-10 08:18:39,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:39,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1423 transitions. [2022-01-10 08:18:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:39,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:39,374 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] [2022-01-10 08:18:39,381 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 08:18:39,581 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 08:18:39,581 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:39,581 INFO L85 PathProgramCache]: Analyzing trace with hash -204748832, now seen corresponding path program 1 times [2022-01-10 08:18:39,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:39,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35587197] [2022-01-10 08:18:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:39,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:39,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:39,583 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 08:18:39,584 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 08:18:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:39,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:39,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:39,778 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 08:18:39,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:39,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:39,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35587197] [2022-01-10 08:18:39,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35587197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:39,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:39,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:18:39,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692762022] [2022-01-10 08:18:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:39,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:39,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:39,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:39,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:39,780 INFO L87 Difference]: Start difference. First operand 1102 states and 1423 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:39,880 INFO L93 Difference]: Finished difference Result 2342 states and 3053 transitions. [2022-01-10 08:18:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:18:39,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:39,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:39,884 INFO L225 Difference]: With dead ends: 2342 [2022-01-10 08:18:39,884 INFO L226 Difference]: Without dead ends: 1256 [2022-01-10 08:18:39,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:39,886 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 206 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:39,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 1339 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-01-10 08:18:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1108. [2022-01-10 08:18:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1023 states have (on average 1.29227761485826) internal successors, (1322), 1025 states have internal predecessors, (1322), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:18:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1417 transitions. [2022-01-10 08:18:39,930 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1417 transitions. Word has length 112 [2022-01-10 08:18:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:39,930 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 1417 transitions. [2022-01-10 08:18:39,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1417 transitions. [2022-01-10 08:18:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:39,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:39,931 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] [2022-01-10 08:18:39,949 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 08:18:40,138 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 08:18:40,138 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:40,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1420902558, now seen corresponding path program 1 times [2022-01-10 08:18:40,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:40,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864227199] [2022-01-10 08:18:40,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:40,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:40,140 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 08:18:40,142 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 08:18:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:40,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:40,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:40,377 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 08:18:40,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:40,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:40,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864227199] [2022-01-10 08:18:40,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864227199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:40,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:40,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:18:40,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824362214] [2022-01-10 08:18:40,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:40,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:40,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:40,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:40,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:40,378 INFO L87 Difference]: Start difference. First operand 1108 states and 1417 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:40,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:40,444 INFO L93 Difference]: Finished difference Result 2326 states and 3005 transitions. [2022-01-10 08:18:40,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:18:40,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:40,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:40,447 INFO L225 Difference]: With dead ends: 2326 [2022-01-10 08:18:40,447 INFO L226 Difference]: Without dead ends: 1234 [2022-01-10 08:18:40,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:40,449 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 167 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:40,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1316 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-10 08:18:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1114. [2022-01-10 08:18:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1029 states have (on average 1.2789115646258504) internal successors, (1316), 1031 states have internal predecessors, (1316), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:18:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1411 transitions. [2022-01-10 08:18:40,511 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1411 transitions. Word has length 112 [2022-01-10 08:18:40,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:40,512 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 1411 transitions. [2022-01-10 08:18:40,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:40,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1411 transitions. [2022-01-10 08:18:40,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:40,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:40,512 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] [2022-01-10 08:18:40,543 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 08:18:40,719 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 08:18:40,719 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:40,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash 540672100, now seen corresponding path program 1 times [2022-01-10 08:18:40,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:40,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105314075] [2022-01-10 08:18:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:40,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:40,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:40,721 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 08:18:40,722 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 08:18:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:40,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:40,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:40,932 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 08:18:40,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:40,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:40,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105314075] [2022-01-10 08:18:40,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105314075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:40,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:40,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:18:40,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669882884] [2022-01-10 08:18:40,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:40,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:40,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:40,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:40,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:40,933 INFO L87 Difference]: Start difference. First operand 1114 states and 1411 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:40,995 INFO L93 Difference]: Finished difference Result 2282 states and 2917 transitions. [2022-01-10 08:18:40,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:18:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:40,998 INFO L225 Difference]: With dead ends: 2282 [2022-01-10 08:18:40,998 INFO L226 Difference]: Without dead ends: 1184 [2022-01-10 08:18:41,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:41,000 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 88 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:41,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 1281 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:41,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-10 08:18:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1120. [2022-01-10 08:18:41,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1035 states have (on average 1.2657004830917875) internal successors, (1310), 1037 states have internal predecessors, (1310), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:18:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1405 transitions. [2022-01-10 08:18:41,046 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1405 transitions. Word has length 112 [2022-01-10 08:18:41,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:41,046 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 1405 transitions. [2022-01-10 08:18:41,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1405 transitions. [2022-01-10 08:18:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:41,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:41,047 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] [2022-01-10 08:18:41,056 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 08:18:41,254 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 08:18:41,255 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:41,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash 525153382, now seen corresponding path program 1 times [2022-01-10 08:18:41,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:41,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30836728] [2022-01-10 08:18:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:41,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:41,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:41,256 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 08:18:41,259 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 08:18:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:41,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:41,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:41,479 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 08:18:41,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:41,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:41,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30836728] [2022-01-10 08:18:41,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30836728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:41,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:41,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:18:41,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435281392] [2022-01-10 08:18:41,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:41,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:41,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:41,481 INFO L87 Difference]: Start difference. First operand 1120 states and 1405 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:41,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:41,564 INFO L93 Difference]: Finished difference Result 2266 states and 2869 transitions. [2022-01-10 08:18:41,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:18:41,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:41,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:41,568 INFO L225 Difference]: With dead ends: 2266 [2022-01-10 08:18:41,568 INFO L226 Difference]: Without dead ends: 1162 [2022-01-10 08:18:41,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:41,570 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 49 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:41,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1266 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-10 08:18:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1126. [2022-01-10 08:18:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1041 states have (on average 1.2526416906820366) internal successors, (1304), 1043 states have internal predecessors, (1304), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:18:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1399 transitions. [2022-01-10 08:18:41,623 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1399 transitions. Word has length 112 [2022-01-10 08:18:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:41,623 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1399 transitions. [2022-01-10 08:18:41,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1399 transitions. [2022-01-10 08:18:41,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:41,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:41,624 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] [2022-01-10 08:18:41,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 08:18:41,831 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 08:18:41,832 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:41,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:41,832 INFO L85 PathProgramCache]: Analyzing trace with hash -372239896, now seen corresponding path program 1 times [2022-01-10 08:18:41,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:41,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801084673] [2022-01-10 08:18:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:41,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:41,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:41,833 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 08:18:41,835 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 08:18:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:41,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:18:41,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:42,049 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 08:18:42,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:42,049 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:42,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801084673] [2022-01-10 08:18:42,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801084673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:42,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:42,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:18:42,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288982797] [2022-01-10 08:18:42,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:42,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:42,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:42,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:42,050 INFO L87 Difference]: Start difference. First operand 1126 states and 1399 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:42,133 INFO L93 Difference]: Finished difference Result 2250 states and 2821 transitions. [2022-01-10 08:18:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:18:42,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:42,136 INFO L225 Difference]: With dead ends: 2250 [2022-01-10 08:18:42,136 INFO L226 Difference]: Without dead ends: 1140 [2022-01-10 08:18:42,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:42,154 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 10 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:42,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1251 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-01-10 08:18:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1132. [2022-01-10 08:18:42,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 1047 states have (on average 1.2397325692454633) internal successors, (1298), 1049 states have internal predecessors, (1298), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:18:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1393 transitions. [2022-01-10 08:18:42,242 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1393 transitions. Word has length 112 [2022-01-10 08:18:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:42,242 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1393 transitions. [2022-01-10 08:18:42,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1393 transitions. [2022-01-10 08:18:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:42,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:42,268 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] [2022-01-10 08:18:42,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:42,468 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 08:18:42,468 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:42,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash 287291626, now seen corresponding path program 1 times [2022-01-10 08:18:42,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:42,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621541416] [2022-01-10 08:18:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:42,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:42,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:42,470 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 08:18:42,471 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 08:18:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:42,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:18:42,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:42,659 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 08:18:42,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:42,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:42,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621541416] [2022-01-10 08:18:42,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621541416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:42,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:42,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:42,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651133088] [2022-01-10 08:18:42,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:42,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:42,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:42,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:42,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:42,661 INFO L87 Difference]: Start difference. First operand 1132 states and 1393 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:42,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:42,840 INFO L93 Difference]: Finished difference Result 2249 states and 2770 transitions. [2022-01-10 08:18:42,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:18:42,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:42,866 INFO L225 Difference]: With dead ends: 2249 [2022-01-10 08:18:42,866 INFO L226 Difference]: Without dead ends: 1132 [2022-01-10 08:18:42,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:18:42,869 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 340 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:42,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 617 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:18:42,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-01-10 08:18:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1132. [2022-01-10 08:18:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 1047 states have (on average 1.2330468003820438) internal successors, (1291), 1049 states have internal predecessors, (1291), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:18:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1386 transitions. [2022-01-10 08:18:42,923 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1386 transitions. Word has length 112 [2022-01-10 08:18:42,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:42,923 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1386 transitions. [2022-01-10 08:18:42,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1386 transitions. [2022-01-10 08:18:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:42,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:42,924 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] [2022-01-10 08:18:42,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:43,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:18:43,131 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:43,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:43,132 INFO L85 PathProgramCache]: Analyzing trace with hash 988891500, now seen corresponding path program 1 times [2022-01-10 08:18:43,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:43,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345125232] [2022-01-10 08:18:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:43,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:43,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:43,133 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:18:43,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 08:18:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:43,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:18:43,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:43,334 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 08:18:43,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:43,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:43,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345125232] [2022-01-10 08:18:43,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345125232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:43,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:43,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:43,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200348633] [2022-01-10 08:18:43,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:43,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:18:43,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:43,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:18:43,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:18:43,336 INFO L87 Difference]: Start difference. First operand 1132 states and 1386 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:43,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:43,633 INFO L93 Difference]: Finished difference Result 2407 states and 2966 transitions. [2022-01-10 08:18:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:18:43,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 08:18:43,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:43,636 INFO L225 Difference]: With dead ends: 2407 [2022-01-10 08:18:43,636 INFO L226 Difference]: Without dead ends: 1290 [2022-01-10 08:18:43,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:18:43,637 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 412 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:43,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 639 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:43,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-01-10 08:18:43,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1234. [2022-01-10 08:18:43,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1147 states have (on average 1.2101133391455972) internal successors, (1388), 1149 states have internal predecessors, (1388), 47 states have call successors, (47), 38 states have call predecessors, (47), 39 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:18:43,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1483 transitions. [2022-01-10 08:18:43,696 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1483 transitions. Word has length 112 [2022-01-10 08:18:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:43,696 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1483 transitions. [2022-01-10 08:18:43,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:18:43,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1483 transitions. [2022-01-10 08:18:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 08:18:43,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:43,696 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] [2022-01-10 08:18:43,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 08:18:43,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:18:43,903 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:43,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash -816546834, now seen corresponding path program 1 times [2022-01-10 08:18:43,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:43,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239271747] [2022-01-10 08:18:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:43,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:43,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:43,905 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:18:43,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 08:18:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:43,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:43,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:44,148 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 08:18:44,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:44,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:44,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239271747] [2022-01-10 08:18:44,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239271747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:44,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:44,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:18:44,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820661638] [2022-01-10 08:18:44,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:44,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:44,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:44,149 INFO L87 Difference]: Start difference. First operand 1234 states and 1483 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 08:18:44,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:44,294 INFO L93 Difference]: Finished difference Result 3639 states and 4392 transitions. [2022-01-10 08:18:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:44,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 112 [2022-01-10 08:18:44,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:44,298 INFO L225 Difference]: With dead ends: 3639 [2022-01-10 08:18:44,298 INFO L226 Difference]: Without dead ends: 2421 [2022-01-10 08:18:44,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 08:18:44,300 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 190 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:44,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 637 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2022-01-10 08:18:44,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2419. [2022-01-10 08:18:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2419 states, 2250 states have (on average 1.2) internal successors, (2700), 2255 states have internal predecessors, (2700), 90 states have call successors, (90), 76 states have call predecessors, (90), 78 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-01-10 08:18:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 2882 transitions. [2022-01-10 08:18:44,413 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 2882 transitions. Word has length 112 [2022-01-10 08:18:44,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:44,413 INFO L470 AbstractCegarLoop]: Abstraction has 2419 states and 2882 transitions. [2022-01-10 08:18:44,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 08:18:44,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 2882 transitions. [2022-01-10 08:18:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 08:18:44,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:44,415 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:44,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:44,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:18:44,622 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:44,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:44,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1740201290, now seen corresponding path program 1 times [2022-01-10 08:18:44,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:44,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247195024] [2022-01-10 08:18:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:44,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:44,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:44,624 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:18:44,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 08:18:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:44,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:44,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 08:18:44,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:44,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:44,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247195024] [2022-01-10 08:18:44,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247195024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:44,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:44,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:18:44,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333160766] [2022-01-10 08:18:44,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:44,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:44,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:44,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:44,897 INFO L87 Difference]: Start difference. First operand 2419 states and 2882 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:18:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:45,183 INFO L93 Difference]: Finished difference Result 6938 states and 8313 transitions. [2022-01-10 08:18:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:45,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 182 [2022-01-10 08:18:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:45,192 INFO L225 Difference]: With dead ends: 6938 [2022-01-10 08:18:45,192 INFO L226 Difference]: Without dead ends: 4535 [2022-01-10 08:18:45,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 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 08:18:45,196 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 182 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:45,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 636 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:45,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2022-01-10 08:18:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 4525. [2022-01-10 08:18:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4525 states, 4208 states have (on average 1.1929657794676807) internal successors, (5020), 4217 states have internal predecessors, (5020), 168 states have call successors, (168), 144 states have call predecessors, (168), 148 states have return successors, (172), 164 states have call predecessors, (172), 168 states have call successors, (172) [2022-01-10 08:18:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 5360 transitions. [2022-01-10 08:18:45,479 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 5360 transitions. Word has length 182 [2022-01-10 08:18:45,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:45,479 INFO L470 AbstractCegarLoop]: Abstraction has 4525 states and 5360 transitions. [2022-01-10 08:18:45,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:18:45,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 5360 transitions. [2022-01-10 08:18:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 08:18:45,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:45,482 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:45,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:45,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:18:45,682 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:45,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:45,683 INFO L85 PathProgramCache]: Analyzing trace with hash -301311001, now seen corresponding path program 1 times [2022-01-10 08:18:45,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:45,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396181163] [2022-01-10 08:18:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:45,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:45,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:45,699 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:18:45,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 08:18:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:45,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:18:45,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 08:18:46,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:46,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:46,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396181163] [2022-01-10 08:18:46,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396181163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:46,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:46,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:46,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915582539] [2022-01-10 08:18:46,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:46,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:18:46,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:46,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:18:46,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:18:46,119 INFO L87 Difference]: Start difference. First operand 4525 states and 5360 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:18:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:46,725 INFO L93 Difference]: Finished difference Result 13396 states and 15866 transitions. [2022-01-10 08:18:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:18:46,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 182 [2022-01-10 08:18:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:46,741 INFO L225 Difference]: With dead ends: 13396 [2022-01-10 08:18:46,741 INFO L226 Difference]: Without dead ends: 8888 [2022-01-10 08:18:46,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 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 08:18:46,746 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 377 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:46,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 943 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:18:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8888 states. [2022-01-10 08:18:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8888 to 8886. [2022-01-10 08:18:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8886 states, 8262 states have (on average 1.1859114015976762) internal successors, (9798), 8284 states have internal predecessors, (9798), 327 states have call successors, (327), 280 states have call predecessors, (327), 296 states have return successors, (367), 323 states have call predecessors, (367), 327 states have call successors, (367) [2022-01-10 08:18:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8886 states to 8886 states and 10492 transitions. [2022-01-10 08:18:47,263 INFO L78 Accepts]: Start accepts. Automaton has 8886 states and 10492 transitions. Word has length 182 [2022-01-10 08:18:47,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:47,263 INFO L470 AbstractCegarLoop]: Abstraction has 8886 states and 10492 transitions. [2022-01-10 08:18:47,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:18:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 8886 states and 10492 transitions. [2022-01-10 08:18:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 08:18:47,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:47,267 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:47,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:47,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:18:47,476 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash 226083049, now seen corresponding path program 1 times [2022-01-10 08:18:47,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:47,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480863840] [2022-01-10 08:18:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:47,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:47,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:47,478 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:18:47,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 08:18:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:47,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:47,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 08:18:47,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:47,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:47,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480863840] [2022-01-10 08:18:47,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480863840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:47,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:47,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:18:47,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291497012] [2022-01-10 08:18:47,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:47,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:47,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:47,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:47,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:47,778 INFO L87 Difference]: Start difference. First operand 8886 states and 10492 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:18:48,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:48,215 INFO L93 Difference]: Finished difference Result 15648 states and 18463 transitions. [2022-01-10 08:18:48,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:48,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 182 [2022-01-10 08:18:48,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:48,233 INFO L225 Difference]: With dead ends: 15648 [2022-01-10 08:18:48,233 INFO L226 Difference]: Without dead ends: 6779 [2022-01-10 08:18:48,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 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 08:18:48,242 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 300 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:48,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 309 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:48,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6779 states. [2022-01-10 08:18:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6779 to 6779. [2022-01-10 08:18:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 6306 states have (on average 1.186013320647003) internal successors, (7479), 6323 states have internal predecessors, (7479), 246 states have call successors, (246), 212 states have call predecessors, (246), 226 states have return successors, (272), 244 states have call predecessors, (272), 246 states have call successors, (272) [2022-01-10 08:18:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 7997 transitions. [2022-01-10 08:18:48,633 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 7997 transitions. Word has length 182 [2022-01-10 08:18:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:48,634 INFO L470 AbstractCegarLoop]: Abstraction has 6779 states and 7997 transitions. [2022-01-10 08:18:48,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:18:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 7997 transitions. [2022-01-10 08:18:48,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-10 08:18:48,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:48,636 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:48,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:48,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:18:48,844 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:48,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1153107529, now seen corresponding path program 1 times [2022-01-10 08:18:48,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:48,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997208008] [2022-01-10 08:18:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:48,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:48,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:48,847 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:18:48,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 08:18:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:48,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:18:48,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 08:18:49,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:49,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:49,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997208008] [2022-01-10 08:18:49,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997208008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:49,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:49,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:49,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168582872] [2022-01-10 08:18:49,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:49,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:18:49,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:18:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:18:49,252 INFO L87 Difference]: Start difference. First operand 6779 states and 7997 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:18:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:50,310 INFO L93 Difference]: Finished difference Result 19677 states and 23213 transitions. [2022-01-10 08:18:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:18:50,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 183 [2022-01-10 08:18:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:50,336 INFO L225 Difference]: With dead ends: 19677 [2022-01-10 08:18:50,336 INFO L226 Difference]: Without dead ends: 12915 [2022-01-10 08:18:50,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 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 08:18:50,344 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 369 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:50,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 917 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12915 states. [2022-01-10 08:18:51,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12915 to 12913. [2022-01-10 08:18:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12913 states, 12009 states have (on average 1.1830293946207011) internal successors, (14207), 12047 states have internal predecessors, (14207), 467 states have call successors, (467), 400 states have call predecessors, (467), 436 states have return successors, (539), 467 states have call predecessors, (539), 467 states have call successors, (539) [2022-01-10 08:18:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12913 states to 12913 states and 15213 transitions. [2022-01-10 08:18:51,093 INFO L78 Accepts]: Start accepts. Automaton has 12913 states and 15213 transitions. Word has length 183 [2022-01-10 08:18:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:51,093 INFO L470 AbstractCegarLoop]: Abstraction has 12913 states and 15213 transitions. [2022-01-10 08:18:51,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:18:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 12913 states and 15213 transitions. [2022-01-10 08:18:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-10 08:18:51,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:51,099 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:51,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:51,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:18:51,307 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:51,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash -625713479, now seen corresponding path program 1 times [2022-01-10 08:18:51,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:51,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675318128] [2022-01-10 08:18:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:51,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:51,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:51,314 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:18:51,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 08:18:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:51,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:18:51,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 08:18:51,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:51,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:51,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675318128] [2022-01-10 08:18:51,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675318128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:51,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:51,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:18:51,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11323493] [2022-01-10 08:18:51,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:51,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:18:51,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:51,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:18:51,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:18:51,593 INFO L87 Difference]: Start difference. First operand 12913 states and 15213 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:18:52,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:52,349 INFO L93 Difference]: Finished difference Result 25801 states and 30386 transitions. [2022-01-10 08:18:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:18:52,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 183 [2022-01-10 08:18:52,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:52,371 INFO L225 Difference]: With dead ends: 25801 [2022-01-10 08:18:52,371 INFO L226 Difference]: Without dead ends: 12905 [2022-01-10 08:18:52,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 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 08:18:52,385 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 298 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:52,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 308 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:18:52,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12905 states. [2022-01-10 08:18:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12905 to 12905. [2022-01-10 08:18:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12905 states, 12004 states have (on average 1.1827724091969343) internal successors, (14198), 12041 states have internal predecessors, (14198), 464 states have call successors, (464), 400 states have call predecessors, (464), 436 states have return successors, (536), 464 states have call predecessors, (536), 464 states have call successors, (536) [2022-01-10 08:18:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12905 states to 12905 states and 15198 transitions. [2022-01-10 08:18:53,307 INFO L78 Accepts]: Start accepts. Automaton has 12905 states and 15198 transitions. Word has length 183 [2022-01-10 08:18:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:53,308 INFO L470 AbstractCegarLoop]: Abstraction has 12905 states and 15198 transitions. [2022-01-10 08:18:53,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:18:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 12905 states and 15198 transitions. [2022-01-10 08:18:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-10 08:18:53,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:53,378 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:53,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-01-10 08:18:53,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:18:53,585 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:53,585 INFO L85 PathProgramCache]: Analyzing trace with hash 780205291, now seen corresponding path program 1 times [2022-01-10 08:18:53,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:53,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566287455] [2022-01-10 08:18:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:53,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:53,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:53,587 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:18:53,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 08:18:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:53,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:18:53,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 08:18:53,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:53,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:53,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566287455] [2022-01-10 08:18:53,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566287455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:53,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:53,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:53,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851060026] [2022-01-10 08:18:53,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:53,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:18:53,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:18:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:18:53,986 INFO L87 Difference]: Start difference. First operand 12905 states and 15198 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:18:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:18:55,802 INFO L93 Difference]: Finished difference Result 41745 states and 49012 transitions. [2022-01-10 08:18:55,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:18:55,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 184 [2022-01-10 08:18:55,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:18:55,861 INFO L225 Difference]: With dead ends: 41745 [2022-01-10 08:18:55,862 INFO L226 Difference]: Without dead ends: 28857 [2022-01-10 08:18:55,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 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 08:18:55,881 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 395 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:18:55,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 702 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:18:55,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28857 states. [2022-01-10 08:18:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28857 to 28111. [2022-01-10 08:18:57,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28111 states, 26130 states have (on average 1.1761959433601226) internal successors, (30734), 26355 states have internal predecessors, (30734), 876 states have call successors, (876), 752 states have call predecessors, (876), 1104 states have return successors, (1324), 1004 states have call predecessors, (1324), 876 states have call successors, (1324) [2022-01-10 08:18:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28111 states to 28111 states and 32934 transitions. [2022-01-10 08:18:57,684 INFO L78 Accepts]: Start accepts. Automaton has 28111 states and 32934 transitions. Word has length 184 [2022-01-10 08:18:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:18:57,684 INFO L470 AbstractCegarLoop]: Abstraction has 28111 states and 32934 transitions. [2022-01-10 08:18:57,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:18:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 28111 states and 32934 transitions. [2022-01-10 08:18:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:18:57,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:18:57,695 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:57,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-01-10 08:18:57,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:18:57,903 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:18:57,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:18:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash -303593293, now seen corresponding path program 1 times [2022-01-10 08:18:57,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:18:57,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122712265] [2022-01-10 08:18:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:18:57,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:18:57,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:18:57,906 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:18:57,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 08:18:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:18:58,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:18:58,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:18:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 08:18:58,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:18:58,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:18:58,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122712265] [2022-01-10 08:18:58,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122712265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:18:58,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:18:58,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:18:58,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47884598] [2022-01-10 08:18:58,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:18:58,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:18:58,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:18:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:18:58,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:18:58,314 INFO L87 Difference]: Start difference. First operand 28111 states and 32934 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:19:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:01,850 INFO L93 Difference]: Finished difference Result 80929 states and 94747 transitions. [2022-01-10 08:19:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:19:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 185 [2022-01-10 08:19:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:02,054 INFO L225 Difference]: With dead ends: 80929 [2022-01-10 08:19:02,054 INFO L226 Difference]: Without dead ends: 52835 [2022-01-10 08:19:02,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 183 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 08:19:02,091 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 358 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:02,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 843 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:19:02,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52835 states. [2022-01-10 08:19:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52835 to 52833. [2022-01-10 08:19:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52833 states, 49065 states have (on average 1.1730357688780189) internal successors, (57555), 49515 states have internal predecessors, (57555), 1655 states have call successors, (1655), 1408 states have call predecessors, (1655), 2112 states have return successors, (2563), 1911 states have call predecessors, (2563), 1655 states have call successors, (2563) [2022-01-10 08:19:05,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52833 states to 52833 states and 61773 transitions. [2022-01-10 08:19:05,375 INFO L78 Accepts]: Start accepts. Automaton has 52833 states and 61773 transitions. Word has length 185 [2022-01-10 08:19:05,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:05,375 INFO L470 AbstractCegarLoop]: Abstraction has 52833 states and 61773 transitions. [2022-01-10 08:19:05,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:19:05,375 INFO L276 IsEmpty]: Start isEmpty. Operand 52833 states and 61773 transitions. [2022-01-10 08:19:05,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:19:05,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:05,393 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:05,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:05,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:05,601 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:05,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash 223800757, now seen corresponding path program 1 times [2022-01-10 08:19:05,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:05,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272138434] [2022-01-10 08:19:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:05,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:05,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:05,603 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:05,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-01-10 08:19:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:05,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:05,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 08:19:05,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:05,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:05,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272138434] [2022-01-10 08:19:05,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272138434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:05,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:05,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:05,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157129849] [2022-01-10 08:19:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:05,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:05,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:05,906 INFO L87 Difference]: Start difference. First operand 52833 states and 61773 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:19:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:09,373 INFO L93 Difference]: Finished difference Result 105643 states and 123510 transitions. [2022-01-10 08:19:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:09,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 185 [2022-01-10 08:19:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:09,468 INFO L225 Difference]: With dead ends: 105643 [2022-01-10 08:19:09,468 INFO L226 Difference]: Without dead ends: 52827 [2022-01-10 08:19:09,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 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 08:19:09,512 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 295 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:09,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 307 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52827 states. [2022-01-10 08:19:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52827 to 52827. [2022-01-10 08:19:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52827 states, 49062 states have (on average 1.1729852023969671) internal successors, (57549), 49511 states have internal predecessors, (57549), 1652 states have call successors, (1652), 1408 states have call predecessors, (1652), 2112 states have return successors, (2560), 1908 states have call predecessors, (2560), 1652 states have call successors, (2560) [2022-01-10 08:19:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52827 states to 52827 states and 61761 transitions. [2022-01-10 08:19:13,124 INFO L78 Accepts]: Start accepts. Automaton has 52827 states and 61761 transitions. Word has length 185 [2022-01-10 08:19:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:13,124 INFO L470 AbstractCegarLoop]: Abstraction has 52827 states and 61761 transitions. [2022-01-10 08:19:13,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:19:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 52827 states and 61761 transitions. [2022-01-10 08:19:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-10 08:19:13,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:13,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:13,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-01-10 08:19:13,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:13,344 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:13,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:13,344 INFO L85 PathProgramCache]: Analyzing trace with hash -817148433, now seen corresponding path program 1 times [2022-01-10 08:19:13,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:13,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101681482] [2022-01-10 08:19:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:13,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:13,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:13,346 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:13,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-01-10 08:19:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:13,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:19:13,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 08:19:13,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:13,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:13,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101681482] [2022-01-10 08:19:13,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101681482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:13,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:13,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:13,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21528334] [2022-01-10 08:19:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:13,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:19:13,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:19:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:19:13,746 INFO L87 Difference]: Start difference. First operand 52827 states and 61761 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:19:19,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:19,768 INFO L93 Difference]: Finished difference Result 151640 states and 177116 transitions. [2022-01-10 08:19:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:19:19,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 186 [2022-01-10 08:19:19,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:20,139 INFO L225 Difference]: With dead ends: 151640 [2022-01-10 08:19:20,139 INFO L226 Difference]: Without dead ends: 98830 [2022-01-10 08:19:20,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 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 08:19:20,192 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 352 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:20,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 806 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:19:20,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98830 states. [2022-01-10 08:19:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98830 to 98828. [2022-01-10 08:19:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98828 states, 91636 states have (on average 1.1694967043520015) internal successors, (107168), 92558 states have internal predecessors, (107168), 3111 states have call successors, (3111), 2624 states have call predecessors, (3111), 4080 states have return successors, (4987), 3647 states have call predecessors, (4987), 3111 states have call successors, (4987) [2022-01-10 08:19:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98828 states to 98828 states and 115266 transitions. [2022-01-10 08:19:26,574 INFO L78 Accepts]: Start accepts. Automaton has 98828 states and 115266 transitions. Word has length 186 [2022-01-10 08:19:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:26,576 INFO L470 AbstractCegarLoop]: Abstraction has 98828 states and 115266 transitions. [2022-01-10 08:19:26,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:19:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 98828 states and 115266 transitions. [2022-01-10 08:19:26,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-10 08:19:26,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:26,792 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:26,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-01-10 08:19:26,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:26,999 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash -289754383, now seen corresponding path program 1 times [2022-01-10 08:19:27,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:27,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636369786] [2022-01-10 08:19:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:27,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:27,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:27,001 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:27,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-01-10 08:19:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:27,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:27,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 08:19:27,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:27,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:27,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636369786] [2022-01-10 08:19:27,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636369786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:27,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:27,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:27,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115868414] [2022-01-10 08:19:27,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:27,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:27,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:27,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:27,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:27,285 INFO L87 Difference]: Start difference. First operand 98828 states and 115266 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:19:33,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:33,614 INFO L93 Difference]: Finished difference Result 197634 states and 230499 transitions. [2022-01-10 08:19:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:33,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 186 [2022-01-10 08:19:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:33,996 INFO L225 Difference]: With dead ends: 197634 [2022-01-10 08:19:33,997 INFO L226 Difference]: Without dead ends: 98823 [2022-01-10 08:19:34,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 184 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 08:19:34,102 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 293 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:34,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 306 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98823 states.