/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:06:32,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:06:32,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:06:32,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:06:32,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:06:32,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:06:32,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:06:32,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:06:32,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:06:32,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:06:32,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:06:32,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:06:32,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:06:32,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:06:32,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:06:32,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:06:32,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:06:32,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:06:32,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:06:32,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:06:32,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:06:32,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:06:32,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:06:32,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:06:32,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:06:32,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:06:32,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:06:32,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:06:32,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:06:32,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:06:32,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:06:32,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:06:32,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:06:32,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:06:32,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:06:32,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:06:32,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:06:32,712 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:06:32,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:06:32,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:06:32,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:06:32,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:06:32,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:06:32,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:06:32,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:06:32,713 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:06:32,713 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:06:32,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:06:32,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:06:32,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:06:32,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:06:32,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:06:32,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:06:32,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:06:32,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:06:32,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:06:32,714 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:06:32,714 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:06:32,714 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:06:32,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:06:32,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:06:32,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:06:32,715 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:06:32,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:06:32,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:06:32,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:06:32,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:06:32,959 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:06:32,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 07:06:33,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb6335efc/04bee4e359e64f29ae2853651250531b/FLAG8773193fa [2022-01-10 07:06:33,498 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:06:33,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 07:06:33,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb6335efc/04bee4e359e64f29ae2853651250531b/FLAG8773193fa [2022-01-10 07:06:33,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb6335efc/04bee4e359e64f29ae2853651250531b [2022-01-10 07:06:33,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:06:33,537 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:06:33,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:06:33,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:06:33,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:06:33,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:06:33" (1/1) ... [2022-01-10 07:06:33,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7528fb40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:33, skipping insertion in model container [2022-01-10 07:06:33,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:06:33" (1/1) ... [2022-01-10 07:06:33,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:06:33,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:06:33,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8622,8635] [2022-01-10 07:06:33,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15089,15102] [2022-01-10 07:06:33,960 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17286,17299] [2022-01-10 07:06:33,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18310,18323] [2022-01-10 07:06:34,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:06:34,148 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:06:34,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8622,8635] [2022-01-10 07:06:34,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15089,15102] [2022-01-10 07:06:34,224 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17286,17299] [2022-01-10 07:06:34,227 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18310,18323] [2022-01-10 07:06:34,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:06:34,354 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:06:34,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34 WrapperNode [2022-01-10 07:06:34,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:06:34,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:06:34,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:06:34,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:06:34,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (1/1) ... [2022-01-10 07:06:34,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (1/1) ... [2022-01-10 07:06:34,477 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2541 [2022-01-10 07:06:34,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:06:34,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:06:34,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:06:34,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:06:34,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (1/1) ... [2022-01-10 07:06:34,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (1/1) ... [2022-01-10 07:06:34,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (1/1) ... [2022-01-10 07:06:34,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (1/1) ... [2022-01-10 07:06:34,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (1/1) ... [2022-01-10 07:06:34,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (1/1) ... [2022-01-10 07:06:34,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (1/1) ... [2022-01-10 07:06:34,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:06:34,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:06:34,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:06:34,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:06:34,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (1/1) ... [2022-01-10 07:06:34,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:06:34,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:06:34,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 07:06:34,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 07:06:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:06:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:06:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:06:34,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:06:34,879 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:06:34,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:06:36,194 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:06:36,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:06:36,205 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:06:36,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:06:36 BoogieIcfgContainer [2022-01-10 07:06:36,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:06:36,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:06:36,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:06:36,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:06:36,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:06:33" (1/3) ... [2022-01-10 07:06:36,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4924e392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:06:36, skipping insertion in model container [2022-01-10 07:06:36,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:34" (2/3) ... [2022-01-10 07:06:36,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4924e392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:06:36, skipping insertion in model container [2022-01-10 07:06:36,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:06:36" (3/3) ... [2022-01-10 07:06:36,216 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 07:06:36,220 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:06:36,220 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 07:06:36,272 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:06:36,279 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 07:06:36,279 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 07:06:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 442 states, 437 states have (on average 1.8581235697940504) internal successors, (812), 441 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 07:06:36,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:36,327 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] [2022-01-10 07:06:36,328 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:36,332 INFO L85 PathProgramCache]: Analyzing trace with hash 881754525, now seen corresponding path program 1 times [2022-01-10 07:06:36,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:36,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206850053] [2022-01-10 07:06:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:36,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:36,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:36,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:36,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:06:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:36,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:36,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:36,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:36,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:36,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206850053] [2022-01-10 07:06:36,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206850053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:36,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:36,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:36,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380023079] [2022-01-10 07:06:36,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:36,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:36,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:36,896 INFO L87 Difference]: Start difference. First operand has 442 states, 437 states have (on average 1.8581235697940504) internal successors, (812), 441 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:37,071 INFO L93 Difference]: Finished difference Result 671 states and 1177 transitions. [2022-01-10 07:06:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:06:37,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-01-10 07:06:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:37,097 INFO L225 Difference]: With dead ends: 671 [2022-01-10 07:06:37,097 INFO L226 Difference]: Without dead ends: 496 [2022-01-10 07:06:37,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:37,105 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 665 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:37,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 2248 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 123 Unchecked, 0.1s Time] [2022-01-10 07:06:37,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-01-10 07:06:37,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 429. [2022-01-10 07:06:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 425 states have (on average 1.3035294117647058) internal successors, (554), 428 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 554 transitions. [2022-01-10 07:06:37,179 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 554 transitions. Word has length 50 [2022-01-10 07:06:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:37,179 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 554 transitions. [2022-01-10 07:06:37,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 554 transitions. [2022-01-10 07:06:37,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 07:06:37,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:37,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:06:37,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:06:37,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:37,393 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:37,395 INFO L85 PathProgramCache]: Analyzing trace with hash 737470643, now seen corresponding path program 1 times [2022-01-10 07:06:37,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:37,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795548739] [2022-01-10 07:06:37,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:37,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:37,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:37,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:37,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:06:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:37,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:37,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:37,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:37,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:37,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795548739] [2022-01-10 07:06:37,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795548739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:37,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:37,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:37,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357958213] [2022-01-10 07:06:37,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:37,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:37,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:37,940 INFO L87 Difference]: Start difference. First operand 429 states and 554 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:38,164 INFO L93 Difference]: Finished difference Result 579 states and 770 transitions. [2022-01-10 07:06:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:38,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-01-10 07:06:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:38,167 INFO L225 Difference]: With dead ends: 579 [2022-01-10 07:06:38,167 INFO L226 Difference]: Without dead ends: 426 [2022-01-10 07:06:38,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:38,169 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 17 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:38,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1196 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 224 Unchecked, 0.2s Time] [2022-01-10 07:06:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-01-10 07:06:38,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2022-01-10 07:06:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 422 states have (on average 1.3033175355450237) internal successors, (550), 425 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 550 transitions. [2022-01-10 07:06:38,180 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 550 transitions. Word has length 50 [2022-01-10 07:06:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:38,180 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 550 transitions. [2022-01-10 07:06:38,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 550 transitions. [2022-01-10 07:06:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 07:06:38,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:38,182 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] [2022-01-10 07:06:38,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 07:06:38,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:38,395 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:38,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:38,395 INFO L85 PathProgramCache]: Analyzing trace with hash 301591798, now seen corresponding path program 1 times [2022-01-10 07:06:38,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:38,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856525376] [2022-01-10 07:06:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:38,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:38,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:38,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:38,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:06:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:38,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:38,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:38,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:38,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:38,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856525376] [2022-01-10 07:06:38,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856525376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:38,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:38,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:38,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107448803] [2022-01-10 07:06:38,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:38,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:38,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:38,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:38,769 INFO L87 Difference]: Start difference. First operand 426 states and 550 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:39,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:39,097 INFO L93 Difference]: Finished difference Result 576 states and 766 transitions. [2022-01-10 07:06:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:39,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-01-10 07:06:39,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:39,100 INFO L225 Difference]: With dead ends: 576 [2022-01-10 07:06:39,100 INFO L226 Difference]: Without dead ends: 406 [2022-01-10 07:06:39,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:39,101 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 14 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:39,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 1447 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 378 Invalid, 0 Unknown, 203 Unchecked, 0.3s Time] [2022-01-10 07:06:39,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-10 07:06:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2022-01-10 07:06:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 402 states have (on average 1.3059701492537314) internal successors, (525), 405 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 525 transitions. [2022-01-10 07:06:39,115 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 525 transitions. Word has length 50 [2022-01-10 07:06:39,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:39,116 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 525 transitions. [2022-01-10 07:06:39,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:39,116 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 525 transitions. [2022-01-10 07:06:39,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 07:06:39,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:39,117 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] [2022-01-10 07:06:39,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:39,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:39,328 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:39,328 INFO L85 PathProgramCache]: Analyzing trace with hash -731488336, now seen corresponding path program 1 times [2022-01-10 07:06:39,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:39,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138353974] [2022-01-10 07:06:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:39,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:39,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:39,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:39,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:06:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:39,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:39,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:39,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:39,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:39,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138353974] [2022-01-10 07:06:39,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138353974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:39,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:39,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:39,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464586303] [2022-01-10 07:06:39,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:39,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:39,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:39,780 INFO L87 Difference]: Start difference. First operand 406 states and 525 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:40,020 INFO L93 Difference]: Finished difference Result 556 states and 741 transitions. [2022-01-10 07:06:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:40,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-10 07:06:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:40,022 INFO L225 Difference]: With dead ends: 556 [2022-01-10 07:06:40,022 INFO L226 Difference]: Without dead ends: 318 [2022-01-10 07:06:40,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:40,024 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 16 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:40,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1146 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 157 Unchecked, 0.2s Time] [2022-01-10 07:06:40,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-10 07:06:40,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2022-01-10 07:06:40,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 314 states have (on average 1.3248407643312101) internal successors, (416), 317 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:40,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 416 transitions. [2022-01-10 07:06:40,037 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 416 transitions. Word has length 51 [2022-01-10 07:06:40,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:40,038 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 416 transitions. [2022-01-10 07:06:40,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:40,038 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 416 transitions. [2022-01-10 07:06:40,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 07:06:40,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:40,039 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] [2022-01-10 07:06:40,055 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 07:06:40,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:40,250 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:40,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:40,250 INFO L85 PathProgramCache]: Analyzing trace with hash 275954842, now seen corresponding path program 1 times [2022-01-10 07:06:40,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:40,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82012882] [2022-01-10 07:06:40,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:40,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:40,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:40,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:06:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:40,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:06:40,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:40,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:40,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:40,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82012882] [2022-01-10 07:06:40,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82012882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:40,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:40,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:06:40,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210978124] [2022-01-10 07:06:40,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:40,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:06:40,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:40,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:06:40,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:06:40,768 INFO L87 Difference]: Start difference. First operand 318 states and 416 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:40,974 INFO L93 Difference]: Finished difference Result 431 states and 582 transitions. [2022-01-10 07:06:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:06:40,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-10 07:06:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:40,976 INFO L225 Difference]: With dead ends: 431 [2022-01-10 07:06:40,976 INFO L226 Difference]: Without dead ends: 322 [2022-01-10 07:06:40,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:40,978 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 18 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 446 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:40,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1632 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 446 Unchecked, 0.2s Time] [2022-01-10 07:06:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-01-10 07:06:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2022-01-10 07:06:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 318 states have (on average 1.320754716981132) internal successors, (420), 321 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 420 transitions. [2022-01-10 07:06:40,986 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 420 transitions. Word has length 51 [2022-01-10 07:06:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:40,987 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 420 transitions. [2022-01-10 07:06:40,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 420 transitions. [2022-01-10 07:06:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 07:06:40,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:40,998 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] [2022-01-10 07:06:41,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 07:06:41,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:41,209 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:41,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:41,210 INFO L85 PathProgramCache]: Analyzing trace with hash -694386316, now seen corresponding path program 1 times [2022-01-10 07:06:41,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:41,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366737849] [2022-01-10 07:06:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:41,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:41,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:41,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:06:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:41,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:41,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:41,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:41,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:41,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366737849] [2022-01-10 07:06:41,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366737849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:41,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:41,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:41,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740349138] [2022-01-10 07:06:41,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:41,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:41,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:41,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:41,471 INFO L87 Difference]: Start difference. First operand 322 states and 420 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:41,506 INFO L93 Difference]: Finished difference Result 569 states and 777 transitions. [2022-01-10 07:06:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:41,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-10 07:06:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:41,510 INFO L225 Difference]: With dead ends: 569 [2022-01-10 07:06:41,510 INFO L226 Difference]: Without dead ends: 424 [2022-01-10 07:06:41,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:41,513 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 193 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:41,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 758 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:41,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-01-10 07:06:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 418. [2022-01-10 07:06:41,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 414 states have (on average 1.3502415458937198) internal successors, (559), 417 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 559 transitions. [2022-01-10 07:06:41,526 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 559 transitions. Word has length 51 [2022-01-10 07:06:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:41,527 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 559 transitions. [2022-01-10 07:06:41,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 559 transitions. [2022-01-10 07:06:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 07:06:41,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:41,528 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] [2022-01-10 07:06:41,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:41,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:41,739 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1906241974, now seen corresponding path program 1 times [2022-01-10 07:06:41,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:41,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74227035] [2022-01-10 07:06:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:41,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:41,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:41,742 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:41,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:06:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:41,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:41,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:42,113 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 07:06:42,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:42,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:42,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74227035] [2022-01-10 07:06:42,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74227035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:42,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:42,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:42,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413823781] [2022-01-10 07:06:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:42,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:42,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:42,115 INFO L87 Difference]: Start difference. First operand 418 states and 559 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:42,362 INFO L93 Difference]: Finished difference Result 520 states and 702 transitions. [2022-01-10 07:06:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:42,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-10 07:06:42,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:42,364 INFO L225 Difference]: With dead ends: 520 [2022-01-10 07:06:42,364 INFO L226 Difference]: Without dead ends: 415 [2022-01-10 07:06:42,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:42,365 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 19 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:42,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 880 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 295 Invalid, 0 Unknown, 16 Unchecked, 0.2s Time] [2022-01-10 07:06:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-10 07:06:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2022-01-10 07:06:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 411 states have (on average 1.3503649635036497) internal successors, (555), 414 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 555 transitions. [2022-01-10 07:06:42,374 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 555 transitions. Word has length 51 [2022-01-10 07:06:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:42,374 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 555 transitions. [2022-01-10 07:06:42,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:42,375 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 555 transitions. [2022-01-10 07:06:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 07:06:42,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:42,376 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] [2022-01-10 07:06:42,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:42,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:42,586 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:42,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1761958092, now seen corresponding path program 1 times [2022-01-10 07:06:42,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:42,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668216109] [2022-01-10 07:06:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:42,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:42,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:42,590 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:42,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:06:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:42,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:06:42,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:42,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:42,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:42,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668216109] [2022-01-10 07:06:42,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668216109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:42,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:42,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:42,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303223461] [2022-01-10 07:06:42,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:42,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:06:42,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:06:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:42,880 INFO L87 Difference]: Start difference. First operand 415 states and 555 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:43,297 INFO L93 Difference]: Finished difference Result 1057 states and 1524 transitions. [2022-01-10 07:06:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:06:43,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-10 07:06:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:43,302 INFO L225 Difference]: With dead ends: 1057 [2022-01-10 07:06:43,302 INFO L226 Difference]: Without dead ends: 902 [2022-01-10 07:06:43,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:06:43,303 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 1506 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:43,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1506 Valid, 741 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:06:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-01-10 07:06:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 418. [2022-01-10 07:06:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 414 states have (on average 1.3429951690821256) internal successors, (556), 417 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 556 transitions. [2022-01-10 07:06:43,321 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 556 transitions. Word has length 51 [2022-01-10 07:06:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:43,322 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 556 transitions. [2022-01-10 07:06:43,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 556 transitions. [2022-01-10 07:06:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:43,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:43,323 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] [2022-01-10 07:06:43,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:43,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:43,533 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:43,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1048140228, now seen corresponding path program 1 times [2022-01-10 07:06:43,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:43,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046217744] [2022-01-10 07:06:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:43,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:43,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:43,535 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:43,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:06:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:43,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:43,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:43,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:43,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:43,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046217744] [2022-01-10 07:06:43,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046217744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:43,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:43,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:43,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306023680] [2022-01-10 07:06:43,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:43,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:43,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:43,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:43,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:43,892 INFO L87 Difference]: Start difference. First operand 418 states and 556 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:44,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:44,043 INFO L93 Difference]: Finished difference Result 659 states and 903 transitions. [2022-01-10 07:06:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:44,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 07:06:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:44,045 INFO L225 Difference]: With dead ends: 659 [2022-01-10 07:06:44,045 INFO L226 Difference]: Without dead ends: 398 [2022-01-10 07:06:44,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:44,046 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 22 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:44,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 620 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-01-10 07:06:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-01-10 07:06:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2022-01-10 07:06:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 394 states have (on average 1.3477157360406091) internal successors, (531), 397 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 531 transitions. [2022-01-10 07:06:44,060 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 531 transitions. Word has length 52 [2022-01-10 07:06:44,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:44,060 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 531 transitions. [2022-01-10 07:06:44,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:44,060 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 531 transitions. [2022-01-10 07:06:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:44,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:44,061 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] [2022-01-10 07:06:44,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 07:06:44,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:44,271 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:44,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:44,272 INFO L85 PathProgramCache]: Analyzing trace with hash 767103520, now seen corresponding path program 1 times [2022-01-10 07:06:44,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:44,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783864094] [2022-01-10 07:06:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:44,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:44,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:44,274 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:44,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:06:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:44,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:44,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:44,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:44,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:44,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783864094] [2022-01-10 07:06:44,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783864094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:44,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:44,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:44,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774923260] [2022-01-10 07:06:44,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:44,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:44,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:44,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:44,510 INFO L87 Difference]: Start difference. First operand 398 states and 531 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:44,551 INFO L93 Difference]: Finished difference Result 802 states and 1108 transitions. [2022-01-10 07:06:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:44,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 07:06:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:44,554 INFO L225 Difference]: With dead ends: 802 [2022-01-10 07:06:44,554 INFO L226 Difference]: Without dead ends: 580 [2022-01-10 07:06:44,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:44,555 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 233 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:44,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 755 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-01-10 07:06:44,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 574. [2022-01-10 07:06:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 570 states have (on average 1.3666666666666667) internal successors, (779), 573 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 779 transitions. [2022-01-10 07:06:44,575 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 779 transitions. Word has length 52 [2022-01-10 07:06:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:44,575 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 779 transitions. [2022-01-10 07:06:44,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 779 transitions. [2022-01-10 07:06:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:44,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:44,576 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] [2022-01-10 07:06:44,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:44,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:44,786 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:44,787 INFO L85 PathProgramCache]: Analyzing trace with hash -203237638, now seen corresponding path program 1 times [2022-01-10 07:06:44,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:44,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059282352] [2022-01-10 07:06:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:44,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:44,788 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:44,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:06:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:44,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:06:44,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:45,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:45,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:45,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059282352] [2022-01-10 07:06:45,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059282352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:45,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:45,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:45,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411593044] [2022-01-10 07:06:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:45,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:06:45,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:45,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:06:45,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:45,085 INFO L87 Difference]: Start difference. First operand 574 states and 779 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:45,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:45,476 INFO L93 Difference]: Finished difference Result 1722 states and 2437 transitions. [2022-01-10 07:06:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:06:45,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 07:06:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:45,481 INFO L225 Difference]: With dead ends: 1722 [2022-01-10 07:06:45,482 INFO L226 Difference]: Without dead ends: 1313 [2022-01-10 07:06:45,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:06:45,483 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 1259 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:45,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 631 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:06:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-01-10 07:06:45,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 590. [2022-01-10 07:06:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 586 states have (on average 1.3430034129692834) internal successors, (787), 589 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:45,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 787 transitions. [2022-01-10 07:06:45,524 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 787 transitions. Word has length 52 [2022-01-10 07:06:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:45,525 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 787 transitions. [2022-01-10 07:06:45,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 787 transitions. [2022-01-10 07:06:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:45,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:45,526 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] [2022-01-10 07:06:45,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:45,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:45,736 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:45,737 INFO L85 PathProgramCache]: Analyzing trace with hash -30630663, now seen corresponding path program 1 times [2022-01-10 07:06:45,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:45,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916006673] [2022-01-10 07:06:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:45,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:45,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:45,738 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:45,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:06:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:45,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:45,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:45,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:45,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:45,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916006673] [2022-01-10 07:06:45,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916006673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:45,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:45,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:45,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202338369] [2022-01-10 07:06:45,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:45,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:45,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:45,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:45,956 INFO L87 Difference]: Start difference. First operand 590 states and 787 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:46,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:46,029 INFO L93 Difference]: Finished difference Result 1264 states and 1724 transitions. [2022-01-10 07:06:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:46,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 07:06:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:46,033 INFO L225 Difference]: With dead ends: 1264 [2022-01-10 07:06:46,033 INFO L226 Difference]: Without dead ends: 935 [2022-01-10 07:06:46,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:46,035 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 209 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:46,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 730 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2022-01-10 07:06:46,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 928. [2022-01-10 07:06:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 924 states have (on average 1.3474025974025974) internal successors, (1245), 927 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1245 transitions. [2022-01-10 07:06:46,079 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1245 transitions. Word has length 53 [2022-01-10 07:06:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:46,079 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1245 transitions. [2022-01-10 07:06:46,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:46,080 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1245 transitions. [2022-01-10 07:06:46,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:46,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:46,085 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] [2022-01-10 07:06:46,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:46,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:46,295 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:46,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1098213762, now seen corresponding path program 1 times [2022-01-10 07:06:46,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:46,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566414823] [2022-01-10 07:06:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:46,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:46,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:46,298 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:46,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:06:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:46,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:46,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:46,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:46,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:46,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566414823] [2022-01-10 07:06:46,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566414823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:46,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:46,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:46,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013921072] [2022-01-10 07:06:46,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:46,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:46,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:46,665 INFO L87 Difference]: Start difference. First operand 928 states and 1245 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:46,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:46,828 INFO L93 Difference]: Finished difference Result 1407 states and 1930 transitions. [2022-01-10 07:06:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:46,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 07:06:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:46,832 INFO L225 Difference]: With dead ends: 1407 [2022-01-10 07:06:46,832 INFO L226 Difference]: Without dead ends: 921 [2022-01-10 07:06:46,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:46,834 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 18 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:46,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 815 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 153 Unchecked, 0.1s Time] [2022-01-10 07:06:46,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-01-10 07:06:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 921. [2022-01-10 07:06:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 917 states have (on average 1.3489640130861504) internal successors, (1237), 920 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1237 transitions. [2022-01-10 07:06:46,874 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1237 transitions. Word has length 53 [2022-01-10 07:06:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:46,875 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1237 transitions. [2022-01-10 07:06:46,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1237 transitions. [2022-01-10 07:06:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:46,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:46,880 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] [2022-01-10 07:06:46,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 07:06:47,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:47,087 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1359815673, now seen corresponding path program 1 times [2022-01-10 07:06:47,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:47,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374625234] [2022-01-10 07:06:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:47,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:47,089 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:47,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:06:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:47,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:47,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:47,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:47,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:47,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374625234] [2022-01-10 07:06:47,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374625234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:47,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:47,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:47,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958364977] [2022-01-10 07:06:47,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:47,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:47,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:47,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:47,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:47,791 INFO L87 Difference]: Start difference. First operand 921 states and 1237 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:47,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:47,971 INFO L93 Difference]: Finished difference Result 1160 states and 1573 transitions. [2022-01-10 07:06:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:47,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 07:06:47,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:47,975 INFO L225 Difference]: With dead ends: 1160 [2022-01-10 07:06:47,975 INFO L226 Difference]: Without dead ends: 933 [2022-01-10 07:06:47,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:06:47,976 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 38 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 395 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:47,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1520 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 395 Unchecked, 0.1s Time] [2022-01-10 07:06:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-01-10 07:06:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 930. [2022-01-10 07:06:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 926 states have (on average 1.349892008639309) internal successors, (1250), 929 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1250 transitions. [2022-01-10 07:06:48,015 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1250 transitions. Word has length 53 [2022-01-10 07:06:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:48,015 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 1250 transitions. [2022-01-10 07:06:48,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1250 transitions. [2022-01-10 07:06:48,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:48,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:48,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:06:48,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:48,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:48,226 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:48,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:48,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1681497036, now seen corresponding path program 1 times [2022-01-10 07:06:48,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:48,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451054336] [2022-01-10 07:06:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:48,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:48,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:48,228 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:48,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:06:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:48,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:06:48,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:48,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:48,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:48,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451054336] [2022-01-10 07:06:48,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451054336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:48,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:48,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:06:48,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745120457] [2022-01-10 07:06:48,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:48,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:06:48,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:48,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:06:48,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:06:48,704 INFO L87 Difference]: Start difference. First operand 930 states and 1250 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:48,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:48,887 INFO L93 Difference]: Finished difference Result 1409 states and 1935 transitions. [2022-01-10 07:06:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:06:48,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 07:06:48,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:48,891 INFO L225 Difference]: With dead ends: 1409 [2022-01-10 07:06:48,891 INFO L226 Difference]: Without dead ends: 930 [2022-01-10 07:06:48,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:48,892 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 19 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:48,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 1278 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 286 Unchecked, 0.1s Time] [2022-01-10 07:06:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-01-10 07:06:48,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2022-01-10 07:06:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 926 states have (on average 1.3488120950323974) internal successors, (1249), 929 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:48,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1249 transitions. [2022-01-10 07:06:48,931 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1249 transitions. Word has length 54 [2022-01-10 07:06:48,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:48,931 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 1249 transitions. [2022-01-10 07:06:48,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1249 transitions. [2022-01-10 07:06:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:48,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:48,932 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] [2022-01-10 07:06:48,942 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 07:06:49,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:49,142 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:49,143 INFO L85 PathProgramCache]: Analyzing trace with hash 711155878, now seen corresponding path program 1 times [2022-01-10 07:06:49,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:49,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769630854] [2022-01-10 07:06:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:49,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:49,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:49,144 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:49,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:06:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:49,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:49,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:49,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:49,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:49,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769630854] [2022-01-10 07:06:49,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769630854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:49,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:49,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:49,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217091143] [2022-01-10 07:06:49,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:49,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:49,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:49,818 INFO L87 Difference]: Start difference. First operand 930 states and 1249 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:50,024 INFO L93 Difference]: Finished difference Result 1331 states and 1830 transitions. [2022-01-10 07:06:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:50,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 07:06:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:50,029 INFO L225 Difference]: With dead ends: 1331 [2022-01-10 07:06:50,029 INFO L226 Difference]: Without dead ends: 930 [2022-01-10 07:06:50,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:06:50,030 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 38 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:50,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1339 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 276 Unchecked, 0.2s Time] [2022-01-10 07:06:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-01-10 07:06:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2022-01-10 07:06:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 926 states have (on average 1.347732181425486) internal successors, (1248), 929 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1248 transitions. [2022-01-10 07:06:50,068 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1248 transitions. Word has length 54 [2022-01-10 07:06:50,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:50,068 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 1248 transitions. [2022-01-10 07:06:50,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1248 transitions. [2022-01-10 07:06:50,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:50,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:50,070 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] [2022-01-10 07:06:50,079 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 07:06:50,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:50,280 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:50,280 INFO L85 PathProgramCache]: Analyzing trace with hash -839465653, now seen corresponding path program 1 times [2022-01-10 07:06:50,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:50,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144442953] [2022-01-10 07:06:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:50,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:50,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:50,282 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:50,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:06:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:50,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:50,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:50,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:50,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:50,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144442953] [2022-01-10 07:06:50,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144442953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:50,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:50,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:50,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251003649] [2022-01-10 07:06:50,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:50,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:50,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:50,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:50,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:50,921 INFO L87 Difference]: Start difference. First operand 930 states and 1248 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:51,081 INFO L93 Difference]: Finished difference Result 943 states and 1260 transitions. [2022-01-10 07:06:51,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:51,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 07:06:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:51,092 INFO L225 Difference]: With dead ends: 943 [2022-01-10 07:06:51,092 INFO L226 Difference]: Without dead ends: 938 [2022-01-10 07:06:51,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:06:51,093 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 84 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:51,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 765 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2022-01-10 07:06:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-01-10 07:06:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 930. [2022-01-10 07:06:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 926 states have (on average 1.3466522678185746) internal successors, (1247), 929 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:51,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1247 transitions. [2022-01-10 07:06:51,130 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1247 transitions. Word has length 54 [2022-01-10 07:06:51,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:51,130 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 1247 transitions. [2022-01-10 07:06:51,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:51,130 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1247 transitions. [2022-01-10 07:06:51,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:51,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:51,131 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] [2022-01-10 07:06:51,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:51,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:51,342 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:51,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1984502591, now seen corresponding path program 1 times [2022-01-10 07:06:51,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:51,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071450763] [2022-01-10 07:06:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:51,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:51,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:51,344 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:51,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:06:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:51,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:06:51,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:51,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:51,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:51,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071450763] [2022-01-10 07:06:51,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071450763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:51,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:51,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:51,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373106292] [2022-01-10 07:06:51,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:51,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:06:51,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:06:51,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:51,642 INFO L87 Difference]: Start difference. First operand 930 states and 1247 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:52,073 INFO L93 Difference]: Finished difference Result 2830 states and 3950 transitions. [2022-01-10 07:06:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:06:52,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 07:06:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:52,082 INFO L225 Difference]: With dead ends: 2830 [2022-01-10 07:06:52,082 INFO L226 Difference]: Without dead ends: 2431 [2022-01-10 07:06:52,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:06:52,084 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 913 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:52,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [913 Valid, 805 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:06:52,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2022-01-10 07:06:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 947. [2022-01-10 07:06:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 943 states have (on average 1.3372216330858961) internal successors, (1261), 946 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1261 transitions. [2022-01-10 07:06:52,155 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1261 transitions. Word has length 54 [2022-01-10 07:06:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:52,155 INFO L470 AbstractCegarLoop]: Abstraction has 947 states and 1261 transitions. [2022-01-10 07:06:52,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:52,156 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1261 transitions. [2022-01-10 07:06:52,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:52,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:52,157 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] [2022-01-10 07:06:52,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:52,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:52,367 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1522409843, now seen corresponding path program 1 times [2022-01-10 07:06:52,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:52,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131994631] [2022-01-10 07:06:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:52,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:52,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:52,368 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:52,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:06:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:52,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:52,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:52,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:52,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:52,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131994631] [2022-01-10 07:06:52,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131994631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:52,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:52,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:52,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362697125] [2022-01-10 07:06:52,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:52,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:52,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:52,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:52,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:52,560 INFO L87 Difference]: Start difference. First operand 947 states and 1261 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:52,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:52,696 INFO L93 Difference]: Finished difference Result 1732 states and 2330 transitions. [2022-01-10 07:06:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:52,696 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 07:06:52,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:52,700 INFO L225 Difference]: With dead ends: 1732 [2022-01-10 07:06:52,700 INFO L226 Difference]: Without dead ends: 1336 [2022-01-10 07:06:52,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:52,702 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 289 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:52,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 425 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:06:52,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2022-01-10 07:06:52,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1324. [2022-01-10 07:06:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1320 states have (on average 1.3507575757575758) internal successors, (1783), 1323 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1783 transitions. [2022-01-10 07:06:52,766 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1783 transitions. Word has length 55 [2022-01-10 07:06:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:52,766 INFO L470 AbstractCegarLoop]: Abstraction has 1324 states and 1783 transitions. [2022-01-10 07:06:52,766 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1783 transitions. [2022-01-10 07:06:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:52,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:52,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:06:52,777 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 07:06:52,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:52,977 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:52,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1126690749, now seen corresponding path program 1 times [2022-01-10 07:06:52,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:52,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756916865] [2022-01-10 07:06:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:52,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:52,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:52,979 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:52,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:06:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:53,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:53,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:53,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:53,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:53,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756916865] [2022-01-10 07:06:53,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756916865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:53,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:53,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:53,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009798631] [2022-01-10 07:06:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:53,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:53,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:53,166 INFO L87 Difference]: Start difference. First operand 1324 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:53,259 INFO L93 Difference]: Finished difference Result 1748 states and 2356 transitions. [2022-01-10 07:06:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:53,260 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 07:06:53,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:53,264 INFO L225 Difference]: With dead ends: 1748 [2022-01-10 07:06:53,264 INFO L226 Difference]: Without dead ends: 1296 [2022-01-10 07:06:53,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:53,266 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 244 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:53,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 582 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:53,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-01-10 07:06:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1294. [2022-01-10 07:06:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1290 states have (on average 1.3248062015503876) internal successors, (1709), 1293 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1709 transitions. [2022-01-10 07:06:53,350 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1709 transitions. Word has length 55 [2022-01-10 07:06:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:53,351 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 1709 transitions. [2022-01-10 07:06:53,351 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1709 transitions. [2022-01-10 07:06:53,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:53,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:53,352 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] [2022-01-10 07:06:53,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:53,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:53,562 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1317678866, now seen corresponding path program 1 times [2022-01-10 07:06:53,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:53,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205944838] [2022-01-10 07:06:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:53,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:53,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:53,564 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:53,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:06:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:53,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:53,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:53,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:53,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:53,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205944838] [2022-01-10 07:06:53,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205944838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:53,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:53,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:53,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715911266] [2022-01-10 07:06:53,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:53,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:53,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:53,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:53,761 INFO L87 Difference]: Start difference. First operand 1294 states and 1709 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:53,839 INFO L93 Difference]: Finished difference Result 1691 states and 2245 transitions. [2022-01-10 07:06:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:53,840 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 07:06:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:53,842 INFO L225 Difference]: With dead ends: 1691 [2022-01-10 07:06:53,842 INFO L226 Difference]: Without dead ends: 1288 [2022-01-10 07:06:53,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:53,844 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 219 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:53,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 618 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2022-01-10 07:06:53,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1029. [2022-01-10 07:06:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1025 states have (on average 1.3014634146341464) internal successors, (1334), 1028 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1334 transitions. [2022-01-10 07:06:53,903 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1334 transitions. Word has length 55 [2022-01-10 07:06:53,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:53,903 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 1334 transitions. [2022-01-10 07:06:53,903 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1334 transitions. [2022-01-10 07:06:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:53,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:53,904 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] [2022-01-10 07:06:53,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:54,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:54,114 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:54,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:54,115 INFO L85 PathProgramCache]: Analyzing trace with hash -944081870, now seen corresponding path program 1 times [2022-01-10 07:06:54,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:54,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029969966] [2022-01-10 07:06:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:54,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:54,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:54,116 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:54,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:06:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:54,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:54,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:54,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:54,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:54,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029969966] [2022-01-10 07:06:54,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029969966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:54,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:54,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:54,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404103379] [2022-01-10 07:06:54,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:54,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:54,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:54,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:54,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:54,328 INFO L87 Difference]: Start difference. First operand 1029 states and 1334 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:54,384 INFO L93 Difference]: Finished difference Result 1367 states and 1781 transitions. [2022-01-10 07:06:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:54,386 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 07:06:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:54,389 INFO L225 Difference]: With dead ends: 1367 [2022-01-10 07:06:54,389 INFO L226 Difference]: Without dead ends: 1035 [2022-01-10 07:06:54,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:54,390 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 205 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:54,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 635 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:54,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-01-10 07:06:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1029. [2022-01-10 07:06:54,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1025 states have (on average 1.286829268292683) internal successors, (1319), 1028 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1319 transitions. [2022-01-10 07:06:54,435 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1319 transitions. Word has length 55 [2022-01-10 07:06:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:54,435 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 1319 transitions. [2022-01-10 07:06:54,436 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:54,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1319 transitions. [2022-01-10 07:06:54,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:54,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:54,437 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] [2022-01-10 07:06:54,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:54,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:54,637 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:54,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1002426, now seen corresponding path program 1 times [2022-01-10 07:06:54,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:54,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748637735] [2022-01-10 07:06:54,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:54,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:54,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:54,639 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:54,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:06:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:54,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:54,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:54,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:54,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:54,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748637735] [2022-01-10 07:06:54,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748637735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:54,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:54,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:54,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189382320] [2022-01-10 07:06:54,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:54,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:54,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:54,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:54,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:54,828 INFO L87 Difference]: Start difference. First operand 1029 states and 1319 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:54,921 INFO L93 Difference]: Finished difference Result 1892 states and 2468 transitions. [2022-01-10 07:06:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:54,921 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 07:06:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:54,925 INFO L225 Difference]: With dead ends: 1892 [2022-01-10 07:06:54,925 INFO L226 Difference]: Without dead ends: 1427 [2022-01-10 07:06:54,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:54,927 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 252 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:54,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 424 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:54,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2022-01-10 07:06:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1082. [2022-01-10 07:06:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1078 states have (on average 1.2996289424860854) internal successors, (1401), 1081 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1401 transitions. [2022-01-10 07:06:55,010 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1401 transitions. Word has length 55 [2022-01-10 07:06:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:55,011 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 1401 transitions. [2022-01-10 07:06:55,011 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1401 transitions. [2022-01-10 07:06:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:06:55,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:55,012 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] [2022-01-10 07:06:55,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:55,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:55,222 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:55,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:55,223 INFO L85 PathProgramCache]: Analyzing trace with hash -953719962, now seen corresponding path program 1 times [2022-01-10 07:06:55,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:55,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353043297] [2022-01-10 07:06:55,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:55,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:55,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:55,224 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:55,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:06:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:55,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 07:06:55,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:56,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:56,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:56,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353043297] [2022-01-10 07:06:56,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353043297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:56,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:56,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-10 07:06:56,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356450058] [2022-01-10 07:06:56,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:56,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 07:06:56,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:56,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 07:06:56,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-01-10 07:06:56,819 INFO L87 Difference]: Start difference. First operand 1082 states and 1401 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:57,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:57,124 INFO L93 Difference]: Finished difference Result 1531 states and 1997 transitions. [2022-01-10 07:06:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 07:06:57,125 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 07:06:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:57,128 INFO L225 Difference]: With dead ends: 1531 [2022-01-10 07:06:57,128 INFO L226 Difference]: Without dead ends: 1453 [2022-01-10 07:06:57,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-10 07:06:57,129 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 1120 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 710 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:57,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 2620 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 206 Invalid, 0 Unknown, 710 Unchecked, 0.2s Time] [2022-01-10 07:06:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2022-01-10 07:06:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1089. [2022-01-10 07:06:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1085 states have (on average 1.2995391705069124) internal successors, (1410), 1088 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1410 transitions. [2022-01-10 07:06:57,199 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1410 transitions. Word has length 57 [2022-01-10 07:06:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:57,199 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 1410 transitions. [2022-01-10 07:06:57,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1410 transitions. [2022-01-10 07:06:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:06:57,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:57,201 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] [2022-01-10 07:06:57,211 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 07:06:57,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:57,411 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:57,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:57,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1381909423, now seen corresponding path program 1 times [2022-01-10 07:06:57,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:57,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017932533] [2022-01-10 07:06:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:57,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:57,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:57,413 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:57,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:06:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:57,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 07:06:57,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:06:58,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:58,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:58,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017932533] [2022-01-10 07:06:58,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017932533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:58,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:58,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-10 07:06:58,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705899235] [2022-01-10 07:06:58,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:58,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 07:06:58,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 07:06:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 07:06:58,692 INFO L87 Difference]: Start difference. First operand 1089 states and 1410 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:58,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:58,947 INFO L93 Difference]: Finished difference Result 1517 states and 1980 transitions. [2022-01-10 07:06:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 07:06:58,948 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 07:06:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:58,952 INFO L225 Difference]: With dead ends: 1517 [2022-01-10 07:06:58,952 INFO L226 Difference]: Without dead ends: 1420 [2022-01-10 07:06:58,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:06:58,953 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 1244 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 736 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:58,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1244 Valid, 1914 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 160 Invalid, 0 Unknown, 736 Unchecked, 0.1s Time] [2022-01-10 07:06:58,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2022-01-10 07:06:59,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1056. [2022-01-10 07:06:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.3007590132827325) internal successors, (1371), 1055 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1371 transitions. [2022-01-10 07:06:59,018 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1371 transitions. Word has length 57 [2022-01-10 07:06:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:59,018 INFO L470 AbstractCegarLoop]: Abstraction has 1056 states and 1371 transitions. [2022-01-10 07:06:59,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:06:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1371 transitions. [2022-01-10 07:06:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 07:06:59,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:59,019 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] [2022-01-10 07:06:59,027 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 07:06:59,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:06:59,221 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:59,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:59,222 INFO L85 PathProgramCache]: Analyzing trace with hash 433372011, now seen corresponding path program 1 times [2022-01-10 07:06:59,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:59,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663697207] [2022-01-10 07:06:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:59,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:59,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:59,223 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:06:59,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:06:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:59,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 07:06:59,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:00,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:00,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:00,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663697207] [2022-01-10 07:07:00,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663697207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:00,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:00,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-10 07:07:00,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995288912] [2022-01-10 07:07:00,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:00,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 07:07:00,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:00,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 07:07:00,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-01-10 07:07:00,878 INFO L87 Difference]: Start difference. First operand 1056 states and 1371 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:01,324 INFO L93 Difference]: Finished difference Result 1484 states and 1941 transitions. [2022-01-10 07:07:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 07:07:01,325 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 07:07:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:01,329 INFO L225 Difference]: With dead ends: 1484 [2022-01-10 07:07:01,329 INFO L226 Difference]: Without dead ends: 1406 [2022-01-10 07:07:01,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-01-10 07:07:01,330 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 650 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 612 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:01,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 2565 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 349 Invalid, 0 Unknown, 612 Unchecked, 0.3s Time] [2022-01-10 07:07:01,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2022-01-10 07:07:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1035. [2022-01-10 07:07:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 1.3007736943907158) internal successors, (1345), 1034 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1345 transitions. [2022-01-10 07:07:01,392 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1345 transitions. Word has length 58 [2022-01-10 07:07:01,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:01,392 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1345 transitions. [2022-01-10 07:07:01,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1345 transitions. [2022-01-10 07:07:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:07:01,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:01,394 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] [2022-01-10 07:07:01,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 07:07:01,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:07:01,602 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:01,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:01,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1376289312, now seen corresponding path program 1 times [2022-01-10 07:07:01,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:01,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229985905] [2022-01-10 07:07:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:01,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:01,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:01,604 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:07:01,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:07:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:01,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:07:01,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:02,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:02,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:02,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229985905] [2022-01-10 07:07:02,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229985905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:02,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:02,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:07:02,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321627484] [2022-01-10 07:07:02,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:02,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:07:02,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:02,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:07:02,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:07:02,187 INFO L87 Difference]: Start difference. First operand 1035 states and 1345 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:02,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:02,339 INFO L93 Difference]: Finished difference Result 1112 states and 1449 transitions. [2022-01-10 07:07:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:07:02,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:07:02,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:02,342 INFO L225 Difference]: With dead ends: 1112 [2022-01-10 07:07:02,342 INFO L226 Difference]: Without dead ends: 1022 [2022-01-10 07:07:02,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:07:02,343 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 24 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 248 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:02,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1020 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 248 Unchecked, 0.1s Time] [2022-01-10 07:07:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-01-10 07:07:02,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1022. [2022-01-10 07:07:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1021 states have (on average 1.3016650342801175) internal successors, (1329), 1021 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1329 transitions. [2022-01-10 07:07:02,412 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1329 transitions. Word has length 67 [2022-01-10 07:07:02,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:02,412 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 1329 transitions. [2022-01-10 07:07:02,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1329 transitions. [2022-01-10 07:07:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:07:02,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:02,414 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] [2022-01-10 07:07:02,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:07:02,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:07:02,624 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:02,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:02,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1153789748, now seen corresponding path program 1 times [2022-01-10 07:07:02,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:02,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121925213] [2022-01-10 07:07:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:02,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:02,626 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:07:02,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:07:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:02,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:07:02,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:03,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:03,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:03,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121925213] [2022-01-10 07:07:03,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121925213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:03,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:03,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:07:03,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383417085] [2022-01-10 07:07:03,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:03,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:07:03,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:07:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:07:03,201 INFO L87 Difference]: Start difference. First operand 1022 states and 1329 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:03,266 INFO L93 Difference]: Finished difference Result 1184 states and 1550 transitions. [2022-01-10 07:07:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:07:03,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:07:03,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:03,269 INFO L225 Difference]: With dead ends: 1184 [2022-01-10 07:07:03,269 INFO L226 Difference]: Without dead ends: 980 [2022-01-10 07:07:03,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:07:03,270 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 28 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:03,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 634 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 98 Unchecked, 0.0s Time] [2022-01-10 07:07:03,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-01-10 07:07:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2022-01-10 07:07:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 979 states have (on average 1.3023493360572012) internal successors, (1275), 979 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1275 transitions. [2022-01-10 07:07:03,344 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1275 transitions. Word has length 68 [2022-01-10 07:07:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:03,344 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 1275 transitions. [2022-01-10 07:07:03,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1275 transitions. [2022-01-10 07:07:03,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:07:03,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:03,346 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] [2022-01-10 07:07:03,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:07:03,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:07:03,555 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1837894626, now seen corresponding path program 1 times [2022-01-10 07:07:03,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:03,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335808099] [2022-01-10 07:07:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:03,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:03,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:03,557 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:07:03,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:07:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:03,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:03,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:03,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:03,877 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:03,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335808099] [2022-01-10 07:07:03,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335808099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:03,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:03,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:03,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526530163] [2022-01-10 07:07:03,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:03,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:03,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:03,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:03,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:03,878 INFO L87 Difference]: Start difference. First operand 980 states and 1275 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:03,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:03,997 INFO L93 Difference]: Finished difference Result 1131 states and 1476 transitions. [2022-01-10 07:07:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:03,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:07:03,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:04,001 INFO L225 Difference]: With dead ends: 1131 [2022-01-10 07:07:04,001 INFO L226 Difference]: Without dead ends: 973 [2022-01-10 07:07:04,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:07:04,002 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 17 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:04,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 539 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 94 Unchecked, 0.1s Time] [2022-01-10 07:07:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-01-10 07:07:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 973. [2022-01-10 07:07:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 1.3034979423868314) internal successors, (1267), 972 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1267 transitions. [2022-01-10 07:07:04,077 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1267 transitions. Word has length 68 [2022-01-10 07:07:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:04,078 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1267 transitions. [2022-01-10 07:07:04,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:04,078 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1267 transitions. [2022-01-10 07:07:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:07:04,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:04,079 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] [2022-01-10 07:07:04,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 07:07:04,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:07:04,289 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:04,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:04,289 INFO L85 PathProgramCache]: Analyzing trace with hash -401905317, now seen corresponding path program 1 times [2022-01-10 07:07:04,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:04,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623103057] [2022-01-10 07:07:04,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:04,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:04,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:04,291 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:07:04,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:07:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:04,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:07:04,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:04,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:04,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:04,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623103057] [2022-01-10 07:07:04,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623103057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:04,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:04,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:07:04,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854659531] [2022-01-10 07:07:04,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:04,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:07:04,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:07:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:07:04,495 INFO L87 Difference]: Start difference. First operand 973 states and 1267 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:04,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:04,625 INFO L93 Difference]: Finished difference Result 2007 states and 2696 transitions. [2022-01-10 07:07:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:07:04,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:07:04,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:04,628 INFO L225 Difference]: With dead ends: 2007 [2022-01-10 07:07:04,628 INFO L226 Difference]: Without dead ends: 1379 [2022-01-10 07:07:04,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:07:04,629 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 136 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:04,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 449 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:07:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2022-01-10 07:07:04,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1377. [2022-01-10 07:07:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 1.3088662790697674) internal successors, (1801), 1376 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1801 transitions. [2022-01-10 07:07:04,726 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1801 transitions. Word has length 68 [2022-01-10 07:07:04,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:04,727 INFO L470 AbstractCegarLoop]: Abstraction has 1377 states and 1801 transitions. [2022-01-10 07:07:04,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:04,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1801 transitions. [2022-01-10 07:07:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:07:04,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:04,728 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] [2022-01-10 07:07:04,737 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 07:07:04,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:07:04,937 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:04,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:04,938 INFO L85 PathProgramCache]: Analyzing trace with hash 921720130, now seen corresponding path program 1 times [2022-01-10 07:07:04,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:04,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729669977] [2022-01-10 07:07:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:04,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:04,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:04,939 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:07:04,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:07:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:05,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:07:05,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:05,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:05,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:05,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729669977] [2022-01-10 07:07:05,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729669977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:05,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:05,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:07:05,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015681169] [2022-01-10 07:07:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:05,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:07:05,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:07:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:07:05,179 INFO L87 Difference]: Start difference. First operand 1377 states and 1801 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:05,354 INFO L93 Difference]: Finished difference Result 3169 states and 4277 transitions. [2022-01-10 07:07:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:07:05,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:07:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:05,358 INFO L225 Difference]: With dead ends: 3169 [2022-01-10 07:07:05,359 INFO L226 Difference]: Without dead ends: 2147 [2022-01-10 07:07:05,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:07:05,361 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 129 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:05,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 436 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:07:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2022-01-10 07:07:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2145. [2022-01-10 07:07:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 2144 states have (on average 1.3264925373134329) internal successors, (2844), 2144 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 2844 transitions. [2022-01-10 07:07:05,505 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 2844 transitions. Word has length 68 [2022-01-10 07:07:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:05,506 INFO L470 AbstractCegarLoop]: Abstraction has 2145 states and 2844 transitions. [2022-01-10 07:07:05,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 2844 transitions. [2022-01-10 07:07:05,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:07:05,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:05,507 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] [2022-01-10 07:07:05,516 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 07:07:05,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:07:05,716 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:05,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:05,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1805006481, now seen corresponding path program 1 times [2022-01-10 07:07:05,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:05,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697929137] [2022-01-10 07:07:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:05,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:05,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:05,718 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:07:05,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:07:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:05,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:07:05,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:05,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:05,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:05,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697929137] [2022-01-10 07:07:05,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697929137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:05,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:05,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:07:05,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255365779] [2022-01-10 07:07:05,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:05,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:07:05,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:07:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:07:05,930 INFO L87 Difference]: Start difference. First operand 2145 states and 2844 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:06,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:06,178 INFO L93 Difference]: Finished difference Result 5221 states and 7074 transitions. [2022-01-10 07:07:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:07:06,178 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 07:07:06,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:06,183 INFO L225 Difference]: With dead ends: 5221 [2022-01-10 07:07:06,183 INFO L226 Difference]: Without dead ends: 3431 [2022-01-10 07:07:06,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:07:06,185 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 124 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:06,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 414 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:07:06,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2022-01-10 07:07:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3429. [2022-01-10 07:07:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3429 states, 3428 states have (on average 1.3331388564760793) internal successors, (4570), 3428 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 4570 transitions. [2022-01-10 07:07:06,409 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 4570 transitions. Word has length 69 [2022-01-10 07:07:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:06,409 INFO L470 AbstractCegarLoop]: Abstraction has 3429 states and 4570 transitions. [2022-01-10 07:07:06,409 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:06,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 4570 transitions. [2022-01-10 07:07:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 07:07:06,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:06,410 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] [2022-01-10 07:07:06,420 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 07:07:06,619 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 07:07:06,620 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:06,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1219319478, now seen corresponding path program 1 times [2022-01-10 07:07:06,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:06,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219707004] [2022-01-10 07:07:06,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:06,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:06,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:06,622 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 07:07:06,623 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 07:07:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:06,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:06,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:07,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:07,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:07,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219707004] [2022-01-10 07:07:07,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219707004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:07,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:07,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:07,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437748692] [2022-01-10 07:07:07,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:07,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:07,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:07,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:07,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:07,147 INFO L87 Difference]: Start difference. First operand 3429 states and 4570 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:07,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:07,424 INFO L93 Difference]: Finished difference Result 3862 states and 5147 transitions. [2022-01-10 07:07:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:07,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 07:07:07,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:07,428 INFO L225 Difference]: With dead ends: 3862 [2022-01-10 07:07:07,428 INFO L226 Difference]: Without dead ends: 3448 [2022-01-10 07:07:07,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:07:07,429 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 37 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:07,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 398 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-01-10 07:07:07,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2022-01-10 07:07:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 3448. [2022-01-10 07:07:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 3447 states have (on average 1.3313025819553235) internal successors, (4589), 3447 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 4589 transitions. [2022-01-10 07:07:07,677 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 4589 transitions. Word has length 72 [2022-01-10 07:07:07,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:07,677 INFO L470 AbstractCegarLoop]: Abstraction has 3448 states and 4589 transitions. [2022-01-10 07:07:07,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:07,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 4589 transitions. [2022-01-10 07:07:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 07:07:07,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:07,678 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] [2022-01-10 07:07:07,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 07:07:07,887 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 07:07:07,888 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:07,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:07,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1053761563, now seen corresponding path program 1 times [2022-01-10 07:07:07,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:07,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005840001] [2022-01-10 07:07:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:07,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:07,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:07,890 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 07:07:07,890 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 07:07:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:08,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:08,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:08,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:08,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:08,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005840001] [2022-01-10 07:07:08,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005840001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:08,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:08,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:08,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178063833] [2022-01-10 07:07:08,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:08,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:08,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:08,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:08,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:08,386 INFO L87 Difference]: Start difference. First operand 3448 states and 4589 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:08,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:08,973 INFO L93 Difference]: Finished difference Result 11300 states and 15243 transitions. [2022-01-10 07:07:08,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:07:08,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 07:07:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:08,988 INFO L225 Difference]: With dead ends: 11300 [2022-01-10 07:07:08,988 INFO L226 Difference]: Without dead ends: 8226 [2022-01-10 07:07:08,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:08,993 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 524 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:08,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 558 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:07:09,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8226 states. [2022-01-10 07:07:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8226 to 6582. [2022-01-10 07:07:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6582 states, 6581 states have (on average 1.3074000911715544) internal successors, (8604), 6581 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6582 states to 6582 states and 8604 transitions. [2022-01-10 07:07:09,596 INFO L78 Accepts]: Start accepts. Automaton has 6582 states and 8604 transitions. Word has length 72 [2022-01-10 07:07:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:09,596 INFO L470 AbstractCegarLoop]: Abstraction has 6582 states and 8604 transitions. [2022-01-10 07:07:09,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 6582 states and 8604 transitions. [2022-01-10 07:07:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 07:07:09,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:09,598 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] [2022-01-10 07:07:09,607 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 07:07:09,807 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 07:07:09,807 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:09,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:09,807 INFO L85 PathProgramCache]: Analyzing trace with hash 366854310, now seen corresponding path program 1 times [2022-01-10 07:07:09,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:09,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371875591] [2022-01-10 07:07:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:09,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:09,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:09,810 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 07:07:09,810 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 07:07:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:09,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:07:09,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:10,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:10,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:10,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371875591] [2022-01-10 07:07:10,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371875591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:10,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:10,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:10,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136958026] [2022-01-10 07:07:10,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:10,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:10,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:10,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:10,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:10,046 INFO L87 Difference]: Start difference. First operand 6582 states and 8604 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:11,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:11,275 INFO L93 Difference]: Finished difference Result 14020 states and 18088 transitions. [2022-01-10 07:07:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:07:11,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 07:07:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:11,300 INFO L225 Difference]: With dead ends: 14020 [2022-01-10 07:07:11,301 INFO L226 Difference]: Without dead ends: 14018 [2022-01-10 07:07:11,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:07:11,306 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 320 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:11,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 897 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:07:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14018 states. [2022-01-10 07:07:12,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14018 to 7254. [2022-01-10 07:07:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7254 states, 7253 states have (on average 1.2789190679718736) internal successors, (9276), 7253 states have internal predecessors, (9276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:12,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7254 states to 7254 states and 9276 transitions. [2022-01-10 07:07:12,161 INFO L78 Accepts]: Start accepts. Automaton has 7254 states and 9276 transitions. Word has length 73 [2022-01-10 07:07:12,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:12,162 INFO L470 AbstractCegarLoop]: Abstraction has 7254 states and 9276 transitions. [2022-01-10 07:07:12,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7254 states and 9276 transitions. [2022-01-10 07:07:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 07:07:12,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:12,163 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] [2022-01-10 07:07:12,173 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 07:07:12,372 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 07:07:12,373 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:12,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:12,373 INFO L85 PathProgramCache]: Analyzing trace with hash 499871730, now seen corresponding path program 1 times [2022-01-10 07:07:12,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:12,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497189038] [2022-01-10 07:07:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:12,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:12,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:12,375 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 07:07:12,375 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 07:07:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:12,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:07:12,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:12,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:12,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:12,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497189038] [2022-01-10 07:07:12,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497189038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:12,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:12,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:12,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098492058] [2022-01-10 07:07:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:12,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:07:12,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:07:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:07:12,727 INFO L87 Difference]: Start difference. First operand 7254 states and 9276 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:13,349 INFO L93 Difference]: Finished difference Result 14282 states and 18316 transitions. [2022-01-10 07:07:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:07:13,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 07:07:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:13,361 INFO L225 Difference]: With dead ends: 14282 [2022-01-10 07:07:13,361 INFO L226 Difference]: Without dead ends: 7464 [2022-01-10 07:07:13,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:07:13,369 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 114 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:13,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 550 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-01-10 07:07:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7464 states. [2022-01-10 07:07:14,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7464 to 7464. [2022-01-10 07:07:14,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7464 states, 7463 states have (on average 1.2742864799678413) internal successors, (9510), 7463 states have internal predecessors, (9510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7464 states to 7464 states and 9510 transitions. [2022-01-10 07:07:14,044 INFO L78 Accepts]: Start accepts. Automaton has 7464 states and 9510 transitions. Word has length 74 [2022-01-10 07:07:14,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:14,045 INFO L470 AbstractCegarLoop]: Abstraction has 7464 states and 9510 transitions. [2022-01-10 07:07:14,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 7464 states and 9510 transitions. [2022-01-10 07:07:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 07:07:14,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:14,046 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] [2022-01-10 07:07:14,053 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 07:07:14,247 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 07:07:14,247 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1249908325, now seen corresponding path program 1 times [2022-01-10 07:07:14,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:14,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711221411] [2022-01-10 07:07:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:14,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:14,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:14,249 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 07:07:14,251 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 07:07:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:14,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:07:14,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:14,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:14,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:14,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711221411] [2022-01-10 07:07:14,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711221411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:14,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:14,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:14,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908829154] [2022-01-10 07:07:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:14,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:07:14,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:07:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:07:14,540 INFO L87 Difference]: Start difference. First operand 7464 states and 9510 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:15,998 INFO L93 Difference]: Finished difference Result 15856 states and 20138 transitions. [2022-01-10 07:07:15,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:07:15,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 07:07:15,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:16,013 INFO L225 Difference]: With dead ends: 15856 [2022-01-10 07:07:16,013 INFO L226 Difference]: Without dead ends: 11804 [2022-01-10 07:07:16,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:07:16,022 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 1215 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:16,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 549 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:07:16,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11804 states. [2022-01-10 07:07:16,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11804 to 7358. [2022-01-10 07:07:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7358 states, 7357 states have (on average 1.2756558379774365) internal successors, (9385), 7357 states have internal predecessors, (9385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:16,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7358 states to 7358 states and 9385 transitions. [2022-01-10 07:07:16,787 INFO L78 Accepts]: Start accepts. Automaton has 7358 states and 9385 transitions. Word has length 74 [2022-01-10 07:07:16,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:16,787 INFO L470 AbstractCegarLoop]: Abstraction has 7358 states and 9385 transitions. [2022-01-10 07:07:16,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:16,788 INFO L276 IsEmpty]: Start isEmpty. Operand 7358 states and 9385 transitions. [2022-01-10 07:07:16,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 07:07:16,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:16,789 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] [2022-01-10 07:07:16,799 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 07:07:16,999 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 07:07:16,999 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1684652967, now seen corresponding path program 1 times [2022-01-10 07:07:17,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:17,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588530194] [2022-01-10 07:07:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:17,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:17,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:17,003 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 07:07:17,005 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 07:07:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:17,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:07:17,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:17,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:17,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:17,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588530194] [2022-01-10 07:07:17,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588530194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:17,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:17,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:07:17,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167151524] [2022-01-10 07:07:17,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:17,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:07:17,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:17,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:07:17,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:07:17,495 INFO L87 Difference]: Start difference. First operand 7358 states and 9385 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:18,250 INFO L93 Difference]: Finished difference Result 8383 states and 10701 transitions. [2022-01-10 07:07:18,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:07:18,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 07:07:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:18,259 INFO L225 Difference]: With dead ends: 8383 [2022-01-10 07:07:18,259 INFO L226 Difference]: Without dead ends: 7845 [2022-01-10 07:07:18,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:07:18,261 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 185 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:18,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 634 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 152 Unchecked, 0.1s Time] [2022-01-10 07:07:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7845 states. [2022-01-10 07:07:18,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7845 to 7358. [2022-01-10 07:07:18,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7358 states, 7357 states have (on average 1.2755199130080195) internal successors, (9384), 7357 states have internal predecessors, (9384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7358 states to 7358 states and 9384 transitions. [2022-01-10 07:07:18,912 INFO L78 Accepts]: Start accepts. Automaton has 7358 states and 9384 transitions. Word has length 76 [2022-01-10 07:07:18,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:18,912 INFO L470 AbstractCegarLoop]: Abstraction has 7358 states and 9384 transitions. [2022-01-10 07:07:18,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:18,912 INFO L276 IsEmpty]: Start isEmpty. Operand 7358 states and 9384 transitions. [2022-01-10 07:07:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:07:18,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:18,913 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] [2022-01-10 07:07:18,921 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 07:07:19,114 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 07:07:19,114 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash -572121218, now seen corresponding path program 1 times [2022-01-10 07:07:19,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:19,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854646753] [2022-01-10 07:07:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:19,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:19,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:19,116 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 07:07:19,117 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 07:07:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:19,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:19,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:19,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:19,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:19,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854646753] [2022-01-10 07:07:19,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854646753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:19,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:19,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:19,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713432746] [2022-01-10 07:07:19,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:19,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:19,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:19,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:19,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:19,614 INFO L87 Difference]: Start difference. First operand 7358 states and 9384 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:20,523 INFO L93 Difference]: Finished difference Result 8367 states and 10680 transitions. [2022-01-10 07:07:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:20,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 07:07:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:20,532 INFO L225 Difference]: With dead ends: 8367 [2022-01-10 07:07:20,532 INFO L226 Difference]: Without dead ends: 7871 [2022-01-10 07:07:20,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:07:20,534 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 226 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:20,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 639 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 105 Unchecked, 0.1s Time] [2022-01-10 07:07:20,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7871 states. [2022-01-10 07:07:21,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7871 to 7867. [2022-01-10 07:07:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7867 states, 7866 states have (on average 1.2751080600050853) internal successors, (10030), 7866 states have internal predecessors, (10030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7867 states to 7867 states and 10030 transitions. [2022-01-10 07:07:21,300 INFO L78 Accepts]: Start accepts. Automaton has 7867 states and 10030 transitions. Word has length 77 [2022-01-10 07:07:21,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:21,300 INFO L470 AbstractCegarLoop]: Abstraction has 7867 states and 10030 transitions. [2022-01-10 07:07:21,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7867 states and 10030 transitions. [2022-01-10 07:07:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:07:21,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:21,301 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] [2022-01-10 07:07:21,308 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 07:07:21,501 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 07:07:21,502 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:21,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:21,502 INFO L85 PathProgramCache]: Analyzing trace with hash -737679133, now seen corresponding path program 1 times [2022-01-10 07:07:21,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:21,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866178472] [2022-01-10 07:07:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:21,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:21,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:21,504 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 07:07:21,505 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 07:07:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:21,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:21,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:21,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:21,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:21,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866178472] [2022-01-10 07:07:21,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866178472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:21,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:21,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:21,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27054552] [2022-01-10 07:07:21,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:21,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:21,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:21,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:21,969 INFO L87 Difference]: Start difference. First operand 7867 states and 10030 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:22,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:22,858 INFO L93 Difference]: Finished difference Result 11461 states and 14801 transitions. [2022-01-10 07:07:22,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:07:22,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 07:07:22,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:22,869 INFO L225 Difference]: With dead ends: 11461 [2022-01-10 07:07:22,869 INFO L226 Difference]: Without dead ends: 9327 [2022-01-10 07:07:22,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:22,873 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 528 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:22,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 720 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:07:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9327 states. [2022-01-10 07:07:23,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9327 to 8547. [2022-01-10 07:07:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8547 states, 8546 states have (on average 1.270067868008425) internal successors, (10854), 8546 states have internal predecessors, (10854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8547 states to 8547 states and 10854 transitions. [2022-01-10 07:07:23,719 INFO L78 Accepts]: Start accepts. Automaton has 8547 states and 10854 transitions. Word has length 77 [2022-01-10 07:07:23,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:23,720 INFO L470 AbstractCegarLoop]: Abstraction has 8547 states and 10854 transitions. [2022-01-10 07:07:23,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 8547 states and 10854 transitions. [2022-01-10 07:07:23,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 07:07:23,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:23,721 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] [2022-01-10 07:07:23,728 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 07:07:23,921 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 07:07:23,922 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash -219033470, now seen corresponding path program 1 times [2022-01-10 07:07:23,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:23,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017914899] [2022-01-10 07:07:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:23,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:23,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:23,923 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 07:07:23,924 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 07:07:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:24,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:07:24,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:24,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:24,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:24,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017914899] [2022-01-10 07:07:24,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017914899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:24,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:24,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:07:24,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562765488] [2022-01-10 07:07:24,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:24,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:07:24,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:24,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:07:24,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:07:24,510 INFO L87 Difference]: Start difference. First operand 8547 states and 10854 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:25,358 INFO L93 Difference]: Finished difference Result 9057 states and 11531 transitions. [2022-01-10 07:07:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:07:25,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 07:07:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:25,367 INFO L225 Difference]: With dead ends: 9057 [2022-01-10 07:07:25,367 INFO L226 Difference]: Without dead ends: 8533 [2022-01-10 07:07:25,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:07:25,370 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 47 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:25,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 599 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 141 Unchecked, 0.1s Time] [2022-01-10 07:07:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8533 states. [2022-01-10 07:07:26,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8533 to 8533. [2022-01-10 07:07:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8533 states, 8532 states have (on average 1.2702766057196437) internal successors, (10838), 8532 states have internal predecessors, (10838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:26,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10838 transitions. [2022-01-10 07:07:26,197 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10838 transitions. Word has length 78 [2022-01-10 07:07:26,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:26,197 INFO L470 AbstractCegarLoop]: Abstraction has 8533 states and 10838 transitions. [2022-01-10 07:07:26,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:26,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10838 transitions. [2022-01-10 07:07:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:07:26,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:26,198 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] [2022-01-10 07:07:26,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-01-10 07:07:26,398 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 07:07:26,399 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:26,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:26,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1783079351, now seen corresponding path program 1 times [2022-01-10 07:07:26,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:26,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838742930] [2022-01-10 07:07:26,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:26,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:26,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:26,400 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 07:07:26,401 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 07:07:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:26,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:26,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:26,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:26,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:26,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838742930] [2022-01-10 07:07:26,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838742930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:26,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:26,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:26,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046847059] [2022-01-10 07:07:26,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:26,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:26,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:26,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:26,867 INFO L87 Difference]: Start difference. First operand 8533 states and 10838 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:27,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:27,697 INFO L93 Difference]: Finished difference Result 9047 states and 11519 transitions. [2022-01-10 07:07:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:27,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 07:07:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:27,706 INFO L225 Difference]: With dead ends: 9047 [2022-01-10 07:07:27,707 INFO L226 Difference]: Without dead ends: 8533 [2022-01-10 07:07:27,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:07:27,709 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 53 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:27,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 382 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-01-10 07:07:27,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8533 states. [2022-01-10 07:07:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8533 to 8532. [2022-01-10 07:07:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8532 states, 8531 states have (on average 1.2701910678701207) internal successors, (10836), 8531 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:28,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8532 states to 8532 states and 10836 transitions. [2022-01-10 07:07:28,487 INFO L78 Accepts]: Start accepts. Automaton has 8532 states and 10836 transitions. Word has length 79 [2022-01-10 07:07:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:28,487 INFO L470 AbstractCegarLoop]: Abstraction has 8532 states and 10836 transitions. [2022-01-10 07:07:28,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 8532 states and 10836 transitions. [2022-01-10 07:07:28,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:07:28,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:28,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:07:28,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-01-10 07:07:28,689 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 07:07:28,689 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1660567292, now seen corresponding path program 1 times [2022-01-10 07:07:28,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:28,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430639840] [2022-01-10 07:07:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:28,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:28,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:28,691 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 07:07:28,692 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 07:07:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:28,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:28,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:29,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:29,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:29,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430639840] [2022-01-10 07:07:29,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430639840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:29,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:29,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:29,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395445658] [2022-01-10 07:07:29,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:29,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:29,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:29,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:29,184 INFO L87 Difference]: Start difference. First operand 8532 states and 10836 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:30,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:30,159 INFO L93 Difference]: Finished difference Result 11618 states and 14931 transitions. [2022-01-10 07:07:30,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:07:30,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 07:07:30,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:30,172 INFO L225 Difference]: With dead ends: 11618 [2022-01-10 07:07:30,172 INFO L226 Difference]: Without dead ends: 9484 [2022-01-10 07:07:30,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:30,178 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 531 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:30,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 700 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:07:30,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9484 states. [2022-01-10 07:07:31,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9484 to 9212. [2022-01-10 07:07:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9212 states, 9211 states have (on average 1.2658777548583215) internal successors, (11660), 9211 states have internal predecessors, (11660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9212 states to 9212 states and 11660 transitions. [2022-01-10 07:07:31,083 INFO L78 Accepts]: Start accepts. Automaton has 9212 states and 11660 transitions. Word has length 79 [2022-01-10 07:07:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:31,083 INFO L470 AbstractCegarLoop]: Abstraction has 9212 states and 11660 transitions. [2022-01-10 07:07:31,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 9212 states and 11660 transitions. [2022-01-10 07:07:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:07:31,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:31,085 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] [2022-01-10 07:07:31,092 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 07:07:31,285 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 07:07:31,286 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1684860275, now seen corresponding path program 1 times [2022-01-10 07:07:31,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:31,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557249215] [2022-01-10 07:07:31,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:31,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:31,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:31,288 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 07:07:31,289 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 07:07:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:31,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:31,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:31,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:31,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:31,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557249215] [2022-01-10 07:07:31,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557249215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:31,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:31,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:31,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772609271] [2022-01-10 07:07:31,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:31,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:31,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:31,857 INFO L87 Difference]: Start difference. First operand 9212 states and 11660 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:32,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:32,950 INFO L93 Difference]: Finished difference Result 11279 states and 14324 transitions. [2022-01-10 07:07:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:32,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 07:07:32,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:32,962 INFO L225 Difference]: With dead ends: 11279 [2022-01-10 07:07:32,962 INFO L226 Difference]: Without dead ends: 10765 [2022-01-10 07:07:32,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:07:32,965 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 137 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:32,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 532 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-01-10 07:07:32,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10765 states. [2022-01-10 07:07:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10765 to 9211. [2022-01-10 07:07:33,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9211 states, 9210 states have (on average 1.265798045602606) internal successors, (11658), 9210 states have internal predecessors, (11658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9211 states to 9211 states and 11658 transitions. [2022-01-10 07:07:33,852 INFO L78 Accepts]: Start accepts. Automaton has 9211 states and 11658 transitions. Word has length 79 [2022-01-10 07:07:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:33,852 INFO L470 AbstractCegarLoop]: Abstraction has 9211 states and 11658 transitions. [2022-01-10 07:07:33,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 9211 states and 11658 transitions. [2022-01-10 07:07:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:07:33,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:33,853 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] [2022-01-10 07:07:33,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-01-10 07:07:34,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:07:34,054 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1807372334, now seen corresponding path program 1 times [2022-01-10 07:07:34,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:34,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190862196] [2022-01-10 07:07:34,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:34,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:34,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:34,056 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:07:34,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-01-10 07:07:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:34,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:34,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:34,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:34,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:34,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190862196] [2022-01-10 07:07:34,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190862196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:34,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:34,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:34,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119537706] [2022-01-10 07:07:34,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:34,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:34,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:34,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:34,630 INFO L87 Difference]: Start difference. First operand 9211 states and 11658 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:35,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:35,516 INFO L93 Difference]: Finished difference Result 9732 states and 12349 transitions. [2022-01-10 07:07:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:35,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 07:07:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:35,525 INFO L225 Difference]: With dead ends: 9732 [2022-01-10 07:07:35,525 INFO L226 Difference]: Without dead ends: 9222 [2022-01-10 07:07:35,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:07:35,527 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 49 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:35,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 414 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2022-01-10 07:07:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9222 states. [2022-01-10 07:07:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9222 to 9220. [2022-01-10 07:07:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9220 states, 9219 states have (on average 1.2656470333007919) internal successors, (11668), 9219 states have internal predecessors, (11668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9220 states to 9220 states and 11668 transitions. [2022-01-10 07:07:36,422 INFO L78 Accepts]: Start accepts. Automaton has 9220 states and 11668 transitions. Word has length 79 [2022-01-10 07:07:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:36,422 INFO L470 AbstractCegarLoop]: Abstraction has 9220 states and 11668 transitions. [2022-01-10 07:07:36,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 9220 states and 11668 transitions. [2022-01-10 07:07:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:07:36,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:36,424 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] [2022-01-10 07:07:36,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-01-10 07:07:36,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:07:36,624 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:36,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:36,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1641814419, now seen corresponding path program 1 times [2022-01-10 07:07:36,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:36,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274253818] [2022-01-10 07:07:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:36,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:36,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:36,626 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:07:36,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-01-10 07:07:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:36,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:36,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:37,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:37,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:37,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274253818] [2022-01-10 07:07:37,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274253818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:37,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:37,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:37,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191489461] [2022-01-10 07:07:37,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:37,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:37,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:37,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:37,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:37,091 INFO L87 Difference]: Start difference. First operand 9220 states and 11668 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:38,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:38,121 INFO L93 Difference]: Finished difference Result 12806 states and 16431 transitions. [2022-01-10 07:07:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:07:38,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 07:07:38,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:38,131 INFO L225 Difference]: With dead ends: 12806 [2022-01-10 07:07:38,131 INFO L226 Difference]: Without dead ends: 9696 [2022-01-10 07:07:38,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:38,134 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 550 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:38,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 683 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:07:38,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9696 states. [2022-01-10 07:07:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9696 to 9424. [2022-01-10 07:07:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9424 states, 9423 states have (on average 1.2586225193675051) internal successors, (11860), 9423 states have internal predecessors, (11860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9424 states to 9424 states and 11860 transitions. [2022-01-10 07:07:39,002 INFO L78 Accepts]: Start accepts. Automaton has 9424 states and 11860 transitions. Word has length 79 [2022-01-10 07:07:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:39,002 INFO L470 AbstractCegarLoop]: Abstraction has 9424 states and 11860 transitions. [2022-01-10 07:07:39,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:39,002 INFO L276 IsEmpty]: Start isEmpty. Operand 9424 states and 11860 transitions. [2022-01-10 07:07:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 07:07:39,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:39,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:07:39,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-01-10 07:07:39,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:07:39,207 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:07:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash -796338349, now seen corresponding path program 1 times [2022-01-10 07:07:39,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:39,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217951432] [2022-01-10 07:07:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:39,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:39,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:39,208 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:07:39,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-01-10 07:07:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:39,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:07:39,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:39,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:39,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:39,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217951432] [2022-01-10 07:07:39,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217951432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:39,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:39,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:07:39,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169726588] [2022-01-10 07:07:39,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:39,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:07:39,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:39,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:07:39,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:07:39,454 INFO L87 Difference]: Start difference. First operand 9424 states and 11860 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:07:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:40,366 INFO L93 Difference]: Finished difference Result 18288 states and 23110 transitions. [2022-01-10 07:07:40,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:07:40,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-01-10 07:07:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:40,376 INFO L225 Difference]: With dead ends: 18288 [2022-01-10 07:07:40,377 INFO L226 Difference]: Without dead ends: 9426 [2022-01-10 07:07:40,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:07:40,385 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 121 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:40,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 411 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:07:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states.