/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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:06:23,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:06:23,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:06:23,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:06:23,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:06:23,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:06:23,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:06:23,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:06:23,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:06:23,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:06:23,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:06:23,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:06:23,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:06:23,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:06:23,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:06:23,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:06:23,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:06:23,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:06:23,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:06:23,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:06:23,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:06:23,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:06:23,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:06:23,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:06:23,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:06:23,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:06:23,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:06:23,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:06:23,949 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 07:06:23,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:06:23,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:06:23,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:06:23,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:06:23,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:06:23,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:06:23,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:06:23,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:06:23,976 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:06:23,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:06:23,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:06:23,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:06:23,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:06:23,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:06:23,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:06:23,977 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:06:23,977 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:06:23,977 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:06:23,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:06:23,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:06:23,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:06:23,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:06:23,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:06:23,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:06:23,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:06:23,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:06:23,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:06:23,979 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:06:23,979 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:06:23,980 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:06:23,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:06:23,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:06:23,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:06:23,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:06:24,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:06:24,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:06:24,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:06:24,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:06:24,241 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:06:24,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-10 07:06:24,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8715598/bd002281764b4af58d3bc22c219e5cdd/FLAG550b10bf1 [2022-01-10 07:06:24,736 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:06:24,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-10 07:06:24,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8715598/bd002281764b4af58d3bc22c219e5cdd/FLAG550b10bf1 [2022-01-10 07:06:25,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8715598/bd002281764b4af58d3bc22c219e5cdd [2022-01-10 07:06:25,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:06:25,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:06:25,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:06:25,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:06:25,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:06:25,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:25,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f55edf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25, skipping insertion in model container [2022-01-10 07:06:25,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:25,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:06:25,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:06:25,526 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2022-01-10 07:06:25,555 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2022-01-10 07:06:25,562 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2022-01-10 07:06:25,567 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2022-01-10 07:06:25,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:06:25,688 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:06:25,733 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2022-01-10 07:06:25,752 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2022-01-10 07:06:25,759 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2022-01-10 07:06:25,763 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2022-01-10 07:06:25,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:06:25,872 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:06:25,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25 WrapperNode [2022-01-10 07:06:25,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:06:25,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:06:25,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:06:25,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:06:25,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:25,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:25,966 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2409 [2022-01-10 07:06:25,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:06:25,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:06:25,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:06:25,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:06:25,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:25,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:25,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:25,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:25,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:26,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:26,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:26,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:06:26,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:06:26,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:06:26,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:06:26,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (1/1) ... [2022-01-10 07:06:26,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:06:26,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:06:26,064 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 07:06:26,067 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 07:06:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:06:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:06:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:06:26,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:06:26,302 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:06:26,304 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:06:27,419 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:06:27,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:06:27,433 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:06:27,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:06:27 BoogieIcfgContainer [2022-01-10 07:06:27,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:06:27,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:06:27,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:06:27,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:06:27,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:06:25" (1/3) ... [2022-01-10 07:06:27,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c89712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:06:27, skipping insertion in model container [2022-01-10 07:06:27,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:06:25" (2/3) ... [2022-01-10 07:06:27,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c89712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:06:27, skipping insertion in model container [2022-01-10 07:06:27,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:06:27" (3/3) ... [2022-01-10 07:06:27,441 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-10 07:06:27,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:06:27,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 07:06:27,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:06:27,493 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 07:06:27,493 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 07:06:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 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 07:06:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 07:06:27,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:27,538 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 07:06:27,539 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 07:06:27,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:27,543 INFO L85 PathProgramCache]: Analyzing trace with hash 26036561, now seen corresponding path program 1 times [2022-01-10 07:06:27,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:27,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236198321] [2022-01-10 07:06:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:27,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:27,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:27,558 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 07:06:27,563 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 07:06:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:27,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:27,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:28,083 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 07:06:28,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:28,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236198321] [2022-01-10 07:06:28,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236198321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:28,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:28,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:28,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694725559] [2022-01-10 07:06:28,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:28,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:28,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:28,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:28,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:28,156 INFO L87 Difference]: Start difference. First operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 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), 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 07:06:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:28,498 INFO L93 Difference]: Finished difference Result 631 states and 1109 transitions. [2022-01-10 07:06:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:28,501 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 07:06:28,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:28,509 INFO L225 Difference]: With dead ends: 631 [2022-01-10 07:06:28,509 INFO L226 Difference]: Without dead ends: 365 [2022-01-10 07:06:28,512 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 07:06:28,514 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 54 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:28,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1504 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 405 Invalid, 0 Unknown, 11 Unchecked, 0.3s Time] [2022-01-10 07:06:28,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-01-10 07:06:28,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2022-01-10 07:06:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 361 states have (on average 1.335180055401662) internal successors, (482), 364 states have internal predecessors, (482), 0 states have call successors, (0), 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 07:06:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 482 transitions. [2022-01-10 07:06:28,547 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 482 transitions. Word has length 50 [2022-01-10 07:06:28,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:28,547 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 482 transitions. [2022-01-10 07:06:28,547 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 07:06:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 482 transitions. [2022-01-10 07:06:28,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 07:06:28,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:28,549 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 07:06:28,579 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 07:06:28,756 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 07:06:28,757 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 07:06:28,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1543870192, now seen corresponding path program 1 times [2022-01-10 07:06:28,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:28,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169488906] [2022-01-10 07:06:28,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:28,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:28,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:28,766 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 07:06:28,767 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 07:06:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:28,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:28,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:29,089 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 07:06:29,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:29,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:29,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169488906] [2022-01-10 07:06:29,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169488906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:29,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:29,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:29,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336865480] [2022-01-10 07:06:29,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:29,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:29,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:29,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:29,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:29,092 INFO L87 Difference]: Start difference. First operand 365 states and 482 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 07:06:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:29,319 INFO L93 Difference]: Finished difference Result 538 states and 736 transitions. [2022-01-10 07:06:29,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:29,320 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 07:06:29,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:29,321 INFO L225 Difference]: With dead ends: 538 [2022-01-10 07:06:29,322 INFO L226 Difference]: Without dead ends: 375 [2022-01-10 07:06:29,322 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 07:06:29,323 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 18 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:29,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1302 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 349 Invalid, 0 Unknown, 197 Unchecked, 0.2s Time] [2022-01-10 07:06:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-01-10 07:06:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 372. [2022-01-10 07:06:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 368 states have (on average 1.3369565217391304) internal successors, (492), 371 states have internal predecessors, (492), 0 states have call successors, (0), 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 07:06:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 492 transitions. [2022-01-10 07:06:29,333 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 492 transitions. Word has length 51 [2022-01-10 07:06:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:29,334 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 492 transitions. [2022-01-10 07:06:29,334 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 07:06:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 492 transitions. [2022-01-10 07:06:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 07:06:29,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:29,335 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 07:06:29,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:29,542 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 07:06:29,543 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 07:06:29,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1399586310, now seen corresponding path program 1 times [2022-01-10 07:06:29,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:29,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884028301] [2022-01-10 07:06:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:29,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:29,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:29,546 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 07:06:29,547 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 07:06:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:29,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:29,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:29,903 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 07:06:29,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:29,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:29,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884028301] [2022-01-10 07:06:29,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884028301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:29,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:29,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:29,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818546216] [2022-01-10 07:06:29,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:29,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:29,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:29,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:29,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:29,908 INFO L87 Difference]: Start difference. First operand 372 states and 492 transitions. Second operand has 5 states, 5 states have (on average 10.2) 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 07:06:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:29,950 INFO L93 Difference]: Finished difference Result 603 states and 831 transitions. [2022-01-10 07:06:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:06:29,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 07:06:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:29,952 INFO L225 Difference]: With dead ends: 603 [2022-01-10 07:06:29,952 INFO L226 Difference]: Without dead ends: 433 [2022-01-10 07:06:29,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 07:06:29,955 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 134 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:29,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 1376 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2022-01-10 07:06:29,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-01-10 07:06:29,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 362. [2022-01-10 07:06:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 358 states have (on average 1.335195530726257) internal successors, (478), 361 states have internal predecessors, (478), 0 states have call successors, (0), 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 07:06:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 478 transitions. [2022-01-10 07:06:29,967 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 478 transitions. Word has length 51 [2022-01-10 07:06:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:29,968 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 478 transitions. [2022-01-10 07:06:29,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) 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 07:06:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 478 transitions. [2022-01-10 07:06:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 07:06:29,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:29,969 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 07:06:29,980 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 07:06:30,169 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 07:06:30,170 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 07:06:30,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:30,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1979749037, now seen corresponding path program 1 times [2022-01-10 07:06:30,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:30,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634425772] [2022-01-10 07:06:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:30,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:30,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:30,173 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 07:06:30,175 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 07:06:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:30,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:30,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:30,482 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 07:06:30,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:30,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:30,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634425772] [2022-01-10 07:06:30,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634425772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:30,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:30,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:30,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792245733] [2022-01-10 07:06:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:30,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:30,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:30,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:30,484 INFO L87 Difference]: Start difference. First operand 362 states and 478 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 07:06:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:30,706 INFO L93 Difference]: Finished difference Result 543 states and 738 transitions. [2022-01-10 07:06:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:30,707 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 07:06:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:30,708 INFO L225 Difference]: With dead ends: 543 [2022-01-10 07:06:30,708 INFO L226 Difference]: Without dead ends: 363 [2022-01-10 07:06:30,709 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 07:06:30,709 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 18 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:30,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1285 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 337 Invalid, 0 Unknown, 182 Unchecked, 0.2s Time] [2022-01-10 07:06:30,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-10 07:06:30,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2022-01-10 07:06:30,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 359 states have (on average 1.3342618384401115) internal successors, (479), 362 states have internal predecessors, (479), 0 states have call successors, (0), 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 07:06:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 479 transitions. [2022-01-10 07:06:30,715 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 479 transitions. Word has length 51 [2022-01-10 07:06:30,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:30,715 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 479 transitions. [2022-01-10 07:06:30,716 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 07:06:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 479 transitions. [2022-01-10 07:06:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:30,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:30,716 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 07:06:30,723 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 07:06:30,923 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 07:06:30,924 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 07:06:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash -661083854, now seen corresponding path program 1 times [2022-01-10 07:06:30,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:30,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705295260] [2022-01-10 07:06:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:30,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:30,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:30,944 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 07:06:30,946 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 07:06:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:31,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:31,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:31,234 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 07:06:31,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:31,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:31,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705295260] [2022-01-10 07:06:31,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705295260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:31,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:31,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:31,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378423285] [2022-01-10 07:06:31,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:31,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:31,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:31,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:31,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:31,239 INFO L87 Difference]: Start difference. First operand 363 states and 479 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 07:06:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:31,446 INFO L93 Difference]: Finished difference Result 548 states and 745 transitions. [2022-01-10 07:06:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:31,447 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 07:06:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:31,448 INFO L225 Difference]: With dead ends: 548 [2022-01-10 07:06:31,448 INFO L226 Difference]: Without dead ends: 368 [2022-01-10 07:06:31,449 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 07:06:31,449 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 22 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:31,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1016 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-01-10 07:06:31,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-10 07:06:31,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 367. [2022-01-10 07:06:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 363 states have (on average 1.3333333333333333) internal successors, (484), 366 states have internal predecessors, (484), 0 states have call successors, (0), 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 07:06:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 484 transitions. [2022-01-10 07:06:31,457 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 484 transitions. Word has length 52 [2022-01-10 07:06:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:31,457 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 484 transitions. [2022-01-10 07:06:31,458 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 07:06:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 484 transitions. [2022-01-10 07:06:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:31,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:31,459 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 07:06:31,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:31,666 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 07:06:31,666 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:31,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:31,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2075318811, now seen corresponding path program 1 times [2022-01-10 07:06:31,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:31,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440951791] [2022-01-10 07:06:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:31,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:31,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:31,669 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 07:06:31,669 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 07:06:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:31,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:31,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:31,844 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 07:06:31,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:31,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:31,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440951791] [2022-01-10 07:06:31,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440951791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:31,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:31,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:31,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645058080] [2022-01-10 07:06:31,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:31,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:31,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:31,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:31,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:31,846 INFO L87 Difference]: Start difference. First operand 367 states and 484 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 07:06:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:31,871 INFO L93 Difference]: Finished difference Result 629 states and 869 transitions. [2022-01-10 07:06:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:31,871 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 07:06:31,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:31,873 INFO L225 Difference]: With dead ends: 629 [2022-01-10 07:06:31,873 INFO L226 Difference]: Without dead ends: 484 [2022-01-10 07:06:31,873 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 07:06:31,874 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 259 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 851 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 07:06:31,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 851 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:31,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-01-10 07:06:31,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2022-01-10 07:06:31,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 474 states have (on average 1.371308016877637) internal successors, (650), 477 states have internal predecessors, (650), 0 states have call successors, (0), 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 07:06:31,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 650 transitions. [2022-01-10 07:06:31,882 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 650 transitions. Word has length 52 [2022-01-10 07:06:31,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:31,882 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 650 transitions. [2022-01-10 07:06:31,882 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 07:06:31,882 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 650 transitions. [2022-01-10 07:06:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:31,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:31,883 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 07:06:31,899 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 07:06:32,092 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 07:06:32,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:32,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:32,093 INFO L85 PathProgramCache]: Analyzing trace with hash -890821281, now seen corresponding path program 1 times [2022-01-10 07:06:32,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:32,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467275838] [2022-01-10 07:06:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:32,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:32,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:32,094 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 07:06:32,095 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 07:06:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:32,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:06:32,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:32,305 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 07:06:32,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:32,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:32,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467275838] [2022-01-10 07:06:32,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467275838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:32,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:32,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:32,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185109501] [2022-01-10 07:06:32,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:32,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:06:32,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:32,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:06:32,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:32,307 INFO L87 Difference]: Start difference. First operand 478 states and 650 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 07:06:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:32,680 INFO L93 Difference]: Finished difference Result 1183 states and 1706 transitions. [2022-01-10 07:06:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:06:32,680 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 07:06:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:32,683 INFO L225 Difference]: With dead ends: 1183 [2022-01-10 07:06:32,683 INFO L226 Difference]: Without dead ends: 920 [2022-01-10 07:06:32,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 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 07:06:32,684 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 1469 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:32,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 752 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:06:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-01-10 07:06:32,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 486. [2022-01-10 07:06:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 482 states have (on average 1.3568464730290457) internal successors, (654), 485 states have internal predecessors, (654), 0 states have call successors, (0), 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 07:06:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 654 transitions. [2022-01-10 07:06:32,698 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 654 transitions. Word has length 52 [2022-01-10 07:06:32,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:32,698 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 654 transitions. [2022-01-10 07:06:32,698 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 07:06:32,699 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 654 transitions. [2022-01-10 07:06:32,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:32,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:32,699 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 07:06:32,708 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 07:06:32,908 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 07:06:32,909 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 07:06:32,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:32,909 INFO L85 PathProgramCache]: Analyzing trace with hash 263957753, now seen corresponding path program 1 times [2022-01-10 07:06:32,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:32,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754697058] [2022-01-10 07:06:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:32,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:32,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:32,911 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 07:06:32,912 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 07:06:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:33,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:33,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:33,079 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 07:06:33,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:33,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:33,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754697058] [2022-01-10 07:06:33,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754697058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:33,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:33,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:33,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404120267] [2022-01-10 07:06:33,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:33,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:33,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:33,081 INFO L87 Difference]: Start difference. First operand 486 states and 654 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 07:06:33,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:33,169 INFO L93 Difference]: Finished difference Result 1070 states and 1480 transitions. [2022-01-10 07:06:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:33,169 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 07:06:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:33,171 INFO L225 Difference]: With dead ends: 1070 [2022-01-10 07:06:33,171 INFO L226 Difference]: Without dead ends: 621 [2022-01-10 07:06:33,172 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 07:06:33,172 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 363 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:33,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 539 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:06:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-01-10 07:06:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 615. [2022-01-10 07:06:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 611 states have (on average 1.4058919803600656) internal successors, (859), 614 states have internal predecessors, (859), 0 states have call successors, (0), 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 07:06:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 859 transitions. [2022-01-10 07:06:33,187 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 859 transitions. Word has length 52 [2022-01-10 07:06:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:33,187 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 859 transitions. [2022-01-10 07:06:33,187 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 07:06:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 859 transitions. [2022-01-10 07:06:33,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:33,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:33,188 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 07:06:33,199 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 07:06:33,395 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 07:06:33,398 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1152471482, now seen corresponding path program 1 times [2022-01-10 07:06:33,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:33,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557646184] [2022-01-10 07:06:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:33,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:33,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:33,400 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 07:06:33,401 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 07:06:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:33,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:33,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:33,580 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 07:06:33,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:33,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:33,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557646184] [2022-01-10 07:06:33,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557646184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:33,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:33,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:33,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386492884] [2022-01-10 07:06:33,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:33,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:33,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:33,582 INFO L87 Difference]: Start difference. First operand 615 states and 859 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 07:06:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:33,624 INFO L93 Difference]: Finished difference Result 1353 states and 1947 transitions. [2022-01-10 07:06:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:33,624 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 07:06:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:33,627 INFO L225 Difference]: With dead ends: 1353 [2022-01-10 07:06:33,627 INFO L226 Difference]: Without dead ends: 955 [2022-01-10 07:06:33,628 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 07:06:33,628 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 207 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 766 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 07:06:33,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 766 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:33,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-01-10 07:06:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 945. [2022-01-10 07:06:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 941 states have (on average 1.410201912858661) internal successors, (1327), 944 states have internal predecessors, (1327), 0 states have call successors, (0), 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 07:06:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1327 transitions. [2022-01-10 07:06:33,651 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1327 transitions. Word has length 52 [2022-01-10 07:06:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:33,652 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 1327 transitions. [2022-01-10 07:06:33,652 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 07:06:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1327 transitions. [2022-01-10 07:06:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 07:06:33,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:33,653 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 07:06:33,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:33,860 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 07:06:33,861 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 07:06:33,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:33,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2069938982, now seen corresponding path program 1 times [2022-01-10 07:06:33,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356592720] [2022-01-10 07:06:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:33,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:33,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:33,862 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 07:06:33,864 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 07:06:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:33,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:06:33,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:34,094 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 07:06:34,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:34,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356592720] [2022-01-10 07:06:34,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356592720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:34,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:34,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:34,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793730045] [2022-01-10 07:06:34,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:34,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:06:34,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:34,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:06:34,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:34,096 INFO L87 Difference]: Start difference. First operand 945 states and 1327 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 07:06:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:34,510 INFO L93 Difference]: Finished difference Result 3456 states and 5062 transitions. [2022-01-10 07:06:34,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:06:34,511 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 07:06:34,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:34,519 INFO L225 Difference]: With dead ends: 3456 [2022-01-10 07:06:34,519 INFO L226 Difference]: Without dead ends: 2908 [2022-01-10 07:06:34,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 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 07:06:34,521 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 2301 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:34,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 724 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:06:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2022-01-10 07:06:34,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 936. [2022-01-10 07:06:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 932 states have (on average 1.3916309012875536) internal successors, (1297), 935 states have internal predecessors, (1297), 0 states have call successors, (0), 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 07:06:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1297 transitions. [2022-01-10 07:06:34,577 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1297 transitions. Word has length 52 [2022-01-10 07:06:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:34,577 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 1297 transitions. [2022-01-10 07:06:34,577 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 07:06:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1297 transitions. [2022-01-10 07:06:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:34,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:34,578 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 07:06:34,585 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 07:06:34,785 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 07:06:34,785 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:34,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:34,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1191943080, now seen corresponding path program 1 times [2022-01-10 07:06:34,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:34,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99666159] [2022-01-10 07:06:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:34,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:34,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:34,787 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 07:06:34,789 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 07:06:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:34,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:34,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:34,954 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 07:06:34,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:34,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:34,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99666159] [2022-01-10 07:06:34,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99666159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:34,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:34,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:34,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567103540] [2022-01-10 07:06:34,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:34,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:34,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:34,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:34,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:34,955 INFO L87 Difference]: Start difference. First operand 936 states and 1297 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 07:06:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:35,028 INFO L93 Difference]: Finished difference Result 2197 states and 3102 transitions. [2022-01-10 07:06:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:35,028 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 07:06:35,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:35,033 INFO L225 Difference]: With dead ends: 2197 [2022-01-10 07:06:35,033 INFO L226 Difference]: Without dead ends: 1559 [2022-01-10 07:06:35,034 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 07:06:35,034 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 225 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 779 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 07:06:35,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 779 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2022-01-10 07:06:35,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1552. [2022-01-10 07:06:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1548 states have (on average 1.3908268733850129) internal successors, (2153), 1551 states have internal predecessors, (2153), 0 states have call successors, (0), 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 07:06:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2153 transitions. [2022-01-10 07:06:35,091 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2153 transitions. Word has length 53 [2022-01-10 07:06:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:35,091 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 2153 transitions. [2022-01-10 07:06:35,091 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 07:06:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2153 transitions. [2022-01-10 07:06:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:35,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:35,092 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 07:06:35,101 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 07:06:35,299 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 07:06:35,299 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 07:06:35,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:35,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1019613002, now seen corresponding path program 1 times [2022-01-10 07:06:35,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:35,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539959195] [2022-01-10 07:06:35,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:35,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:35,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:35,301 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 07:06:35,302 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 07:06:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:35,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:35,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:35,576 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 07:06:35,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:35,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:35,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539959195] [2022-01-10 07:06:35,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539959195] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:35,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:35,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:35,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981933988] [2022-01-10 07:06:35,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:35,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:35,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:35,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:35,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:35,578 INFO L87 Difference]: Start difference. First operand 1552 states and 2153 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 07:06:35,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:35,746 INFO L93 Difference]: Finished difference Result 2399 states and 3398 transitions. [2022-01-10 07:06:35,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:35,746 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 07:06:35,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:35,751 INFO L225 Difference]: With dead ends: 2399 [2022-01-10 07:06:35,751 INFO L226 Difference]: Without dead ends: 1545 [2022-01-10 07:06:35,752 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 07:06:35,753 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 25 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:35,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 650 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-01-10 07:06:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-01-10 07:06:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1545. [2022-01-10 07:06:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1541 states have (on average 1.391953277092797) internal successors, (2145), 1544 states have internal predecessors, (2145), 0 states have call successors, (0), 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 07:06:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2145 transitions. [2022-01-10 07:06:35,825 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2145 transitions. Word has length 53 [2022-01-10 07:06:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:35,825 INFO L470 AbstractCegarLoop]: Abstraction has 1545 states and 2145 transitions. [2022-01-10 07:06:35,825 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 07:06:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2145 transitions. [2022-01-10 07:06:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 07:06:35,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:35,830 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 07:06:35,839 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 07:06:36,037 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 07:06:36,038 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:36,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:36,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1519774840, now seen corresponding path program 1 times [2022-01-10 07:06:36,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:36,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079037956] [2022-01-10 07:06:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:36,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:36,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:36,040 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 07:06:36,041 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 07:06:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:36,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:36,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:36,647 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 07:06:36,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:36,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:36,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079037956] [2022-01-10 07:06:36,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079037956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:36,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:36,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:36,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272706075] [2022-01-10 07:06:36,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:36,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:36,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:36,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:36,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:36,648 INFO L87 Difference]: Start difference. First operand 1545 states and 2145 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 07:06:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:36,814 INFO L93 Difference]: Finished difference Result 1966 states and 2753 transitions. [2022-01-10 07:06:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:36,814 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 07:06:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:36,818 INFO L225 Difference]: With dead ends: 1966 [2022-01-10 07:06:36,818 INFO L226 Difference]: Without dead ends: 1557 [2022-01-10 07:06:36,819 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 07:06:36,820 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 39 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:36,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1373 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 305 Unchecked, 0.1s Time] [2022-01-10 07:06:36,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2022-01-10 07:06:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1554. [2022-01-10 07:06:36,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1550 states have (on average 1.392258064516129) internal successors, (2158), 1553 states have internal predecessors, (2158), 0 states have call successors, (0), 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 07:06:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2158 transitions. [2022-01-10 07:06:36,869 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2158 transitions. Word has length 53 [2022-01-10 07:06:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:36,870 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 2158 transitions. [2022-01-10 07:06:36,870 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 07:06:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2158 transitions. [2022-01-10 07:06:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:36,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:36,871 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 07:06:36,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:37,078 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 07:06:37,079 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:37,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash -719043471, now seen corresponding path program 1 times [2022-01-10 07:06:37,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:37,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005159373] [2022-01-10 07:06:37,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:37,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:37,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:37,081 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 07:06:37,081 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 07:06:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:37,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:06:37,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:37,474 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 07:06:37,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:37,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:37,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005159373] [2022-01-10 07:06:37,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005159373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:37,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:37,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:06:37,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463672713] [2022-01-10 07:06:37,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:37,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:06:37,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:37,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:06:37,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:06:37,475 INFO L87 Difference]: Start difference. First operand 1554 states and 2158 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 07:06:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:37,634 INFO L93 Difference]: Finished difference Result 2370 states and 3360 transitions. [2022-01-10 07:06:37,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:06:37,635 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 07:06:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:37,639 INFO L225 Difference]: With dead ends: 2370 [2022-01-10 07:06:37,639 INFO L226 Difference]: Without dead ends: 1523 [2022-01-10 07:06:37,640 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 07:06:37,640 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 24 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:37,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 924 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 168 Unchecked, 0.1s Time] [2022-01-10 07:06:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-01-10 07:06:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2022-01-10 07:06:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1519 states have (on average 1.391705069124424) internal successors, (2114), 1522 states have internal predecessors, (2114), 0 states have call successors, (0), 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 07:06:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2114 transitions. [2022-01-10 07:06:37,690 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2114 transitions. Word has length 54 [2022-01-10 07:06:37,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:37,690 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 2114 transitions. [2022-01-10 07:06:37,690 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 07:06:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2114 transitions. [2022-01-10 07:06:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:37,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:37,691 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 07:06:37,698 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 07:06:37,898 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 07:06:37,898 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:37,899 INFO L85 PathProgramCache]: Analyzing trace with hash 465454059, now seen corresponding path program 1 times [2022-01-10 07:06:37,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:37,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619835883] [2022-01-10 07:06:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:37,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:37,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:37,900 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 07:06:37,901 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 07:06:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:38,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:38,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:38,490 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 07:06:38,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:38,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:38,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619835883] [2022-01-10 07:06:38,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619835883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:38,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:38,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:38,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116094039] [2022-01-10 07:06:38,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:38,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:38,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:38,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:38,492 INFO L87 Difference]: Start difference. First operand 1523 states and 2114 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 07:06:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:38,730 INFO L93 Difference]: Finished difference Result 2699 states and 3842 transitions. [2022-01-10 07:06:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:38,731 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 07:06:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:38,736 INFO L225 Difference]: With dead ends: 2699 [2022-01-10 07:06:38,736 INFO L226 Difference]: Without dead ends: 1932 [2022-01-10 07:06:38,737 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 07:06:38,738 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 165 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 551 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:38,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1786 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 551 Unchecked, 0.2s Time] [2022-01-10 07:06:38,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2022-01-10 07:06:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1523. [2022-01-10 07:06:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1519 states have (on average 1.391046741277156) internal successors, (2113), 1522 states have internal predecessors, (2113), 0 states have call successors, (0), 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 07:06:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2113 transitions. [2022-01-10 07:06:38,795 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2113 transitions. Word has length 54 [2022-01-10 07:06:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:38,795 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 2113 transitions. [2022-01-10 07:06:38,795 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 07:06:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2113 transitions. [2022-01-10 07:06:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:38,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:38,796 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 07:06:38,817 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 07:06:39,003 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 07:06:39,003 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:39,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:39,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1085167472, now seen corresponding path program 1 times [2022-01-10 07:06:39,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:39,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817211343] [2022-01-10 07:06:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:39,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:39,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:39,005 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 07:06:39,006 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 07:06:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:39,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:39,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:39,586 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 07:06:39,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:39,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:39,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817211343] [2022-01-10 07:06:39,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817211343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:39,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:39,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:39,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651160995] [2022-01-10 07:06:39,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:39,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:39,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:39,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:39,588 INFO L87 Difference]: Start difference. First operand 1523 states and 2113 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 07:06:39,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:39,743 INFO L93 Difference]: Finished difference Result 1536 states and 2125 transitions. [2022-01-10 07:06:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:39,744 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 07:06:39,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:39,747 INFO L225 Difference]: With dead ends: 1536 [2022-01-10 07:06:39,747 INFO L226 Difference]: Without dead ends: 1531 [2022-01-10 07:06:39,748 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 07:06:39,748 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 88 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:39,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 808 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2022-01-10 07:06:39,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2022-01-10 07:06:39,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1523. [2022-01-10 07:06:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1519 states have (on average 1.390388413429888) internal successors, (2112), 1522 states have internal predecessors, (2112), 0 states have call successors, (0), 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 07:06:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2112 transitions. [2022-01-10 07:06:39,806 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2112 transitions. Word has length 54 [2022-01-10 07:06:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:39,807 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 2112 transitions. [2022-01-10 07:06:39,807 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 07:06:39,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2112 transitions. [2022-01-10 07:06:39,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 07:06:39,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:39,808 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 07:06:39,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 07:06:40,012 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 07:06:40,012 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:40,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:40,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1383457352, now seen corresponding path program 1 times [2022-01-10 07:06:40,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:40,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583927912] [2022-01-10 07:06:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:40,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:40,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:40,015 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 07:06:40,016 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 07:06:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:40,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:06:40,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:40,250 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 07:06:40,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:40,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:40,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583927912] [2022-01-10 07:06:40,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583927912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:40,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:40,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:40,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896653810] [2022-01-10 07:06:40,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:40,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:06:40,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:06:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:06:40,252 INFO L87 Difference]: Start difference. First operand 1523 states and 2112 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 07:06:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:40,788 INFO L93 Difference]: Finished difference Result 5226 states and 7475 transitions. [2022-01-10 07:06:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:06:40,788 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 07:06:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:40,798 INFO L225 Difference]: With dead ends: 5226 [2022-01-10 07:06:40,798 INFO L226 Difference]: Without dead ends: 4461 [2022-01-10 07:06:40,799 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 07:06:40,800 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 983 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:40,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 855 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:06:40,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2022-01-10 07:06:40,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 1540. [2022-01-10 07:06:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1536 states have (on average 1.37890625) internal successors, (2118), 1539 states have internal predecessors, (2118), 0 states have call successors, (0), 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 07:06:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2118 transitions. [2022-01-10 07:06:40,877 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2118 transitions. Word has length 54 [2022-01-10 07:06:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:40,877 INFO L470 AbstractCegarLoop]: Abstraction has 1540 states and 2118 transitions. [2022-01-10 07:06:40,877 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 07:06:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2118 transitions. [2022-01-10 07:06:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:40,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:40,879 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 07:06:40,886 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 07:06:41,086 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 07:06:41,086 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1746038146, now seen corresponding path program 1 times [2022-01-10 07:06:41,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:41,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597489683] [2022-01-10 07:06:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:41,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:41,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:41,088 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 07:06:41,090 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 07:06:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:41,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:41,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:41,273 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 07:06:41,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:41,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:41,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597489683] [2022-01-10 07:06:41,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597489683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:41,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:41,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:41,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721452541] [2022-01-10 07:06:41,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:41,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:41,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:41,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:41,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:41,274 INFO L87 Difference]: Start difference. First operand 1540 states and 2118 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 07:06:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:41,433 INFO L93 Difference]: Finished difference Result 3010 states and 4196 transitions. [2022-01-10 07:06:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:41,434 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 07:06:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:41,439 INFO L225 Difference]: With dead ends: 3010 [2022-01-10 07:06:41,440 INFO L226 Difference]: Without dead ends: 2320 [2022-01-10 07:06:41,441 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 07:06:41,441 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 311 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:41,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 462 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:06:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2022-01-10 07:06:41,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2304. [2022-01-10 07:06:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 2300 states have (on average 1.401304347826087) internal successors, (3223), 2303 states have internal predecessors, (3223), 0 states have call successors, (0), 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 07:06:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3223 transitions. [2022-01-10 07:06:41,575 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3223 transitions. Word has length 55 [2022-01-10 07:06:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:41,575 INFO L470 AbstractCegarLoop]: Abstraction has 2304 states and 3223 transitions. [2022-01-10 07:06:41,575 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 07:06:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3223 transitions. [2022-01-10 07:06:41,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:41,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:41,576 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, 1, 1, 1] [2022-01-10 07:06:41,583 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 07:06:41,783 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 07:06:41,784 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 07:06:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash -344500623, now seen corresponding path program 1 times [2022-01-10 07:06:41,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981049495] [2022-01-10 07:06:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:41,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:41,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:41,786 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 07:06:41,796 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 07:06:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:41,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:41,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:41,957 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 07:06:41,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:41,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:41,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981049495] [2022-01-10 07:06:41,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981049495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:41,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:41,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:41,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849825637] [2022-01-10 07:06:41,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:41,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:41,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:41,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:41,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:41,959 INFO L87 Difference]: Start difference. First operand 2304 states and 3223 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 07:06:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:42,074 INFO L93 Difference]: Finished difference Result 3039 states and 4273 transitions. [2022-01-10 07:06:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:42,075 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 07:06:42,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:42,080 INFO L225 Difference]: With dead ends: 3039 [2022-01-10 07:06:42,080 INFO L226 Difference]: Without dead ends: 2222 [2022-01-10 07:06:42,081 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 07:06:42,081 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 239 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 661 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 07:06:42,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 661 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-01-10 07:06:42,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1701. [2022-01-10 07:06:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1697 states have (on average 1.3777253977607542) internal successors, (2338), 1700 states have internal predecessors, (2338), 0 states have call successors, (0), 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 07:06:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2338 transitions. [2022-01-10 07:06:42,167 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2338 transitions. Word has length 55 [2022-01-10 07:06:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:42,167 INFO L470 AbstractCegarLoop]: Abstraction has 1701 states and 2338 transitions. [2022-01-10 07:06:42,167 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 07:06:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2338 transitions. [2022-01-10 07:06:42,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:42,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:42,168 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 07:06:42,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:42,375 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 07:06:42,375 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:42,376 INFO L85 PathProgramCache]: Analyzing trace with hash 29096373, now seen corresponding path program 1 times [2022-01-10 07:06:42,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:42,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434646806] [2022-01-10 07:06:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:42,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:42,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:42,378 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 07:06:42,380 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 07:06:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:42,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:42,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:42,541 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 07:06:42,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:42,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:42,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434646806] [2022-01-10 07:06:42,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434646806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:42,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:42,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:42,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274751037] [2022-01-10 07:06:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:42,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:42,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:42,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:42,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:42,543 INFO L87 Difference]: Start difference. First operand 1701 states and 2338 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 07:06:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:42,663 INFO L93 Difference]: Finished difference Result 2351 states and 3243 transitions. [2022-01-10 07:06:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:42,664 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 07:06:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:42,676 INFO L225 Difference]: With dead ends: 2351 [2022-01-10 07:06:42,677 INFO L226 Difference]: Without dead ends: 1707 [2022-01-10 07:06:42,678 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 07:06:42,678 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 225 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 743 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 07:06:42,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 743 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:42,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2022-01-10 07:06:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1701. [2022-01-10 07:06:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1697 states have (on average 1.3612256923983501) internal successors, (2310), 1700 states have internal predecessors, (2310), 0 states have call successors, (0), 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 07:06:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2310 transitions. [2022-01-10 07:06:42,759 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2310 transitions. Word has length 55 [2022-01-10 07:06:42,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:42,759 INFO L470 AbstractCegarLoop]: Abstraction has 1701 states and 2310 transitions. [2022-01-10 07:06:42,759 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 07:06:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2310 transitions. [2022-01-10 07:06:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:42,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:42,760 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 07:06:42,767 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 07:06:42,967 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 07:06:42,967 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1813019801, now seen corresponding path program 1 times [2022-01-10 07:06:42,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:42,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731323943] [2022-01-10 07:06:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:42,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:42,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:42,969 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 07:06:42,969 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 07:06:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:43,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:43,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:43,126 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 07:06:43,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:43,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:43,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731323943] [2022-01-10 07:06:43,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731323943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:43,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:43,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:43,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134687128] [2022-01-10 07:06:43,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:43,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:43,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:43,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:43,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:43,128 INFO L87 Difference]: Start difference. First operand 1701 states and 2310 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 07:06:43,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:43,223 INFO L93 Difference]: Finished difference Result 2269 states and 3085 transitions. [2022-01-10 07:06:43,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:43,223 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 07:06:43,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:43,226 INFO L225 Difference]: With dead ends: 2269 [2022-01-10 07:06:43,226 INFO L226 Difference]: Without dead ends: 1682 [2022-01-10 07:06:43,227 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 07:06:43,227 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 244 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 610 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 07:06:43,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 610 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:43,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2022-01-10 07:06:43,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1363. [2022-01-10 07:06:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1359 states have (on average 1.3222958057395144) internal successors, (1797), 1362 states have internal predecessors, (1797), 0 states have call successors, (0), 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 07:06:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1797 transitions. [2022-01-10 07:06:43,304 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1797 transitions. Word has length 55 [2022-01-10 07:06:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:43,304 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1797 transitions. [2022-01-10 07:06:43,305 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 07:06:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1797 transitions. [2022-01-10 07:06:43,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 07:06:43,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:43,306 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 07:06:43,315 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 07:06:43,512 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 07:06:43,513 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 07:06:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:43,513 INFO L85 PathProgramCache]: Analyzing trace with hash 197011093, now seen corresponding path program 1 times [2022-01-10 07:06:43,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:43,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355846069] [2022-01-10 07:06:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:43,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:43,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:43,514 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 07:06:43,515 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 07:06:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:43,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:43,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:43,673 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 07:06:43,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:43,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:43,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355846069] [2022-01-10 07:06:43,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355846069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:43,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:43,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:43,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252686101] [2022-01-10 07:06:43,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:43,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:43,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:43,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:43,675 INFO L87 Difference]: Start difference. First operand 1363 states and 1797 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 07:06:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:43,803 INFO L93 Difference]: Finished difference Result 2478 states and 3319 transitions. [2022-01-10 07:06:43,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:43,805 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 07:06:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:43,808 INFO L225 Difference]: With dead ends: 2478 [2022-01-10 07:06:43,808 INFO L226 Difference]: Without dead ends: 1850 [2022-01-10 07:06:43,808 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 07:06:43,809 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 274 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 455 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 07:06:43,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 455 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2022-01-10 07:06:43,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1373. [2022-01-10 07:06:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1369 states have (on average 1.3323593864134404) internal successors, (1824), 1372 states have internal predecessors, (1824), 0 states have call successors, (0), 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 07:06:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1824 transitions. [2022-01-10 07:06:43,909 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1824 transitions. Word has length 55 [2022-01-10 07:06:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:43,909 INFO L470 AbstractCegarLoop]: Abstraction has 1373 states and 1824 transitions. [2022-01-10 07:06:43,909 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 07:06:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1824 transitions. [2022-01-10 07:06:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:06:43,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:43,911 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 07:06:43,919 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 07:06:44,135 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 07:06:44,135 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:44,136 INFO L85 PathProgramCache]: Analyzing trace with hash -544179575, now seen corresponding path program 1 times [2022-01-10 07:06:44,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:44,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345596439] [2022-01-10 07:06:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:44,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:44,137 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 07:06:44,138 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 07:06:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:44,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 07:06:44,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:45,617 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 07:06:45,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:45,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:45,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345596439] [2022-01-10 07:06:45,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345596439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:45,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:45,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-10 07:06:45,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867278332] [2022-01-10 07:06:45,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:45,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 07:06:45,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:45,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 07:06:45,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-01-10 07:06:45,618 INFO L87 Difference]: Start difference. First operand 1373 states and 1824 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 07:06:46,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:46,044 INFO L93 Difference]: Finished difference Result 1981 states and 2644 transitions. [2022-01-10 07:06:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 07:06:46,045 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 07:06:46,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:46,048 INFO L225 Difference]: With dead ends: 1981 [2022-01-10 07:06:46,048 INFO L226 Difference]: Without dead ends: 1903 [2022-01-10 07:06:46,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-10 07:06:46,049 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 1056 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 894 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:46,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 2660 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 320 Invalid, 0 Unknown, 894 Unchecked, 0.3s Time] [2022-01-10 07:06:46,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2022-01-10 07:06:46,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1380. [2022-01-10 07:06:46,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1376 states have (on average 1.3321220930232558) internal successors, (1833), 1379 states have internal predecessors, (1833), 0 states have call successors, (0), 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 07:06:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1833 transitions. [2022-01-10 07:06:46,134 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1833 transitions. Word has length 57 [2022-01-10 07:06:46,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:46,134 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 1833 transitions. [2022-01-10 07:06:46,134 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 07:06:46,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1833 transitions. [2022-01-10 07:06:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 07:06:46,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:46,135 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 07:06:46,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 07:06:46,342 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 07:06:46,342 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash 303331698, now seen corresponding path program 1 times [2022-01-10 07:06:46,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:46,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416129857] [2022-01-10 07:06:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:46,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:46,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:46,344 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 07:06:46,346 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 07:06:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:46,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 07:06:46,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:47,475 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 07:06:47,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:47,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:47,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416129857] [2022-01-10 07:06:47,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416129857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:47,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:47,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-10 07:06:47,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414190846] [2022-01-10 07:06:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:47,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 07:06:47,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 07:06:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 07:06:47,477 INFO L87 Difference]: Start difference. First operand 1380 states and 1833 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 07:06:47,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:47,856 INFO L93 Difference]: Finished difference Result 1967 states and 2627 transitions. [2022-01-10 07:06:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 07:06:47,856 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 07:06:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:47,859 INFO L225 Difference]: With dead ends: 1967 [2022-01-10 07:06:47,859 INFO L226 Difference]: Without dead ends: 1870 [2022-01-10 07:06:47,860 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 07:06:47,860 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 1525 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 577 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:47,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1729 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 229 Invalid, 0 Unknown, 577 Unchecked, 0.2s Time] [2022-01-10 07:06:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-01-10 07:06:47,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1347. [2022-01-10 07:06:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1345 states have (on average 1.3338289962825278) internal successors, (1794), 1346 states have internal predecessors, (1794), 0 states have call successors, (0), 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 07:06:47,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1794 transitions. [2022-01-10 07:06:47,942 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1794 transitions. Word has length 57 [2022-01-10 07:06:47,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:47,942 INFO L470 AbstractCegarLoop]: Abstraction has 1347 states and 1794 transitions. [2022-01-10 07:06:47,942 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 07:06:47,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1794 transitions. [2022-01-10 07:06:47,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 07:06:47,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:47,944 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 07:06:47,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:48,150 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 07:06:48,151 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash 114355337, now seen corresponding path program 1 times [2022-01-10 07:06:48,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:48,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051326448] [2022-01-10 07:06:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:48,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:48,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:48,152 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 07:06:48,153 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 07:06:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:48,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 07:06:48,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:49,707 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 07:06:49,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:49,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:49,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051326448] [2022-01-10 07:06:49,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051326448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:49,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:49,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-10 07:06:49,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483871829] [2022-01-10 07:06:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:49,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 07:06:49,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 07:06:49,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-01-10 07:06:49,709 INFO L87 Difference]: Start difference. First operand 1347 states and 1794 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 07:06:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:50,153 INFO L93 Difference]: Finished difference Result 2010 states and 2693 transitions. [2022-01-10 07:06:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 07:06:50,153 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 07:06:50,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:50,156 INFO L225 Difference]: With dead ends: 2010 [2022-01-10 07:06:50,156 INFO L226 Difference]: Without dead ends: 1932 [2022-01-10 07:06:50,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-01-10 07:06:50,157 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1225 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 790 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:50,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 2756 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 280 Invalid, 0 Unknown, 790 Unchecked, 0.2s Time] [2022-01-10 07:06:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2022-01-10 07:06:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1326. [2022-01-10 07:06:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1325 states have (on average 1.3343396226415094) internal successors, (1768), 1325 states have internal predecessors, (1768), 0 states have call successors, (0), 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 07:06:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1768 transitions. [2022-01-10 07:06:50,241 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1768 transitions. Word has length 58 [2022-01-10 07:06:50,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:50,241 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 1768 transitions. [2022-01-10 07:06:50,241 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 07:06:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1768 transitions. [2022-01-10 07:06:50,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:06:50,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:50,242 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 07:06:50,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:50,443 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 07:06:50,443 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 07:06:50,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:50,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2017352889, now seen corresponding path program 1 times [2022-01-10 07:06:50,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:50,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430234707] [2022-01-10 07:06:50,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:50,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:50,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:50,445 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 07:06:50,446 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 07:06:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:50,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:06:50,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:50,810 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 07:06:50,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:50,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:50,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430234707] [2022-01-10 07:06:50,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430234707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:50,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:50,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:06:50,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584542254] [2022-01-10 07:06:50,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:50,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:06:50,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:06:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:06:50,811 INFO L87 Difference]: Start difference. First operand 1326 states and 1768 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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 07:06:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:50,960 INFO L93 Difference]: Finished difference Result 1491 states and 1996 transitions. [2022-01-10 07:06:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:06:50,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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 07:06:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:50,962 INFO L225 Difference]: With dead ends: 1491 [2022-01-10 07:06:50,962 INFO L226 Difference]: Without dead ends: 1301 [2022-01-10 07:06:50,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 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 07:06:50,963 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 24 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:50,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 511 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2022-01-10 07:06:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2022-01-10 07:06:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1301. [2022-01-10 07:06:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.3353846153846154) internal successors, (1736), 1300 states have internal predecessors, (1736), 0 states have call successors, (0), 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 07:06:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1736 transitions. [2022-01-10 07:06:51,053 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1736 transitions. Word has length 67 [2022-01-10 07:06:51,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:51,053 INFO L470 AbstractCegarLoop]: Abstraction has 1301 states and 1736 transitions. [2022-01-10 07:06:51,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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 07:06:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1736 transitions. [2022-01-10 07:06:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:06:51,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:51,055 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 07:06:51,061 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 07:06:51,255 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 07:06:51,255 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 07:06:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash 962898655, now seen corresponding path program 1 times [2022-01-10 07:06:51,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:51,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863606883] [2022-01-10 07:06:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:51,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:51,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:51,257 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 07:06:51,257 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 07:06:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:51,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:51,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:51,738 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 07:06:51,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:51,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:51,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863606883] [2022-01-10 07:06:51,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863606883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:51,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:51,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:51,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138945866] [2022-01-10 07:06:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:51,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:51,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:51,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:51,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:51,739 INFO L87 Difference]: Start difference. First operand 1301 states and 1736 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 07:06:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:51,900 INFO L93 Difference]: Finished difference Result 1463 states and 1961 transitions. [2022-01-10 07:06:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:51,900 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 07:06:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:51,902 INFO L225 Difference]: With dead ends: 1463 [2022-01-10 07:06:51,902 INFO L226 Difference]: Without dead ends: 1286 [2022-01-10 07:06:51,903 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 07:06:51,903 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 24 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:51,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1267 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 372 Unchecked, 0.1s Time] [2022-01-10 07:06:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-01-10 07:06:51,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1286. [2022-01-10 07:06:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 1.3361867704280155) internal successors, (1717), 1285 states have internal predecessors, (1717), 0 states have call successors, (0), 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 07:06:51,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1717 transitions. [2022-01-10 07:06:51,995 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1717 transitions. Word has length 67 [2022-01-10 07:06:51,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:51,996 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 1717 transitions. [2022-01-10 07:06:51,996 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 07:06:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1717 transitions. [2022-01-10 07:06:51,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:06:51,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:51,997 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 07:06:52,004 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 07:06:52,204 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 07:06:52,204 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 07:06:52,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -603163383, now seen corresponding path program 1 times [2022-01-10 07:06:52,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:52,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345687420] [2022-01-10 07:06:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:52,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:52,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:52,206 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 07:06:52,207 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 07:06:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:52,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:52,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:52,467 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 07:06:52,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:52,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:52,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345687420] [2022-01-10 07:06:52,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345687420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:52,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:52,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:52,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262413182] [2022-01-10 07:06:52,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:52,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:52,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:52,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:52,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:52,468 INFO L87 Difference]: Start difference. First operand 1286 states and 1717 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 07:06:52,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:52,625 INFO L93 Difference]: Finished difference Result 1403 states and 1875 transitions. [2022-01-10 07:06:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:52,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 07:06:52,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:52,627 INFO L225 Difference]: With dead ends: 1403 [2022-01-10 07:06:52,627 INFO L226 Difference]: Without dead ends: 1279 [2022-01-10 07:06:52,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 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 07:06:52,628 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 22 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:52,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 445 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-01-10 07:06:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-01-10 07:06:52,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1279. [2022-01-10 07:06:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1278 states have (on average 1.337245696400626) internal successors, (1709), 1278 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 07:06:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1709 transitions. [2022-01-10 07:06:52,709 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1709 transitions. Word has length 67 [2022-01-10 07:06:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:52,710 INFO L470 AbstractCegarLoop]: Abstraction has 1279 states and 1709 transitions. [2022-01-10 07:06:52,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 07:06:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1709 transitions. [2022-01-10 07:06:52,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:06:52,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:52,711 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 07:06:52,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 07:06:52,911 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 07:06:52,912 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 07:06:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1396756321, now seen corresponding path program 1 times [2022-01-10 07:06:52,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:52,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538475060] [2022-01-10 07:06:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:52,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:52,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:52,914 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 07:06:52,914 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 07:06:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:53,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:06:53,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:53,419 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 07:06:53,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:53,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:53,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538475060] [2022-01-10 07:06:53,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538475060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:53,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:53,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:06:53,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187007206] [2022-01-10 07:06:53,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:53,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:06:53,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:53,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:06:53,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:06:53,421 INFO L87 Difference]: Start difference. First operand 1279 states and 1709 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 07:06:53,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:53,561 INFO L93 Difference]: Finished difference Result 1441 states and 1934 transitions. [2022-01-10 07:06:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:06:53,561 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 07:06:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:53,563 INFO L225 Difference]: With dead ends: 1441 [2022-01-10 07:06:53,563 INFO L226 Difference]: Without dead ends: 1237 [2022-01-10 07:06:53,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 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 07:06:53,564 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 40 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:53,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 508 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-01-10 07:06:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-01-10 07:06:53,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1237. [2022-01-10 07:06:53,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 1.337378640776699) internal successors, (1653), 1236 states have internal predecessors, (1653), 0 states have call successors, (0), 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 07:06:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1653 transitions. [2022-01-10 07:06:53,644 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1653 transitions. Word has length 68 [2022-01-10 07:06:53,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:53,644 INFO L470 AbstractCegarLoop]: Abstraction has 1237 states and 1653 transitions. [2022-01-10 07:06:53,644 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 07:06:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1653 transitions. [2022-01-10 07:06:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:06:53,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:53,645 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 07:06:53,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 07:06:53,846 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 07:06:53,846 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 07:06:53,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash 93473399, now seen corresponding path program 1 times [2022-01-10 07:06:53,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:53,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937137193] [2022-01-10 07:06:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:53,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:53,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:53,848 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 07:06:53,848 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 07:06:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:53,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:53,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:54,109 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 07:06:54,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:54,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:54,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937137193] [2022-01-10 07:06:54,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937137193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:54,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:54,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:54,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919374479] [2022-01-10 07:06:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:54,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:54,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:54,111 INFO L87 Difference]: Start difference. First operand 1237 states and 1653 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 07:06:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:54,277 INFO L93 Difference]: Finished difference Result 1388 states and 1858 transitions. [2022-01-10 07:06:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:54,277 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 07:06:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:54,279 INFO L225 Difference]: With dead ends: 1388 [2022-01-10 07:06:54,279 INFO L226 Difference]: Without dead ends: 1230 [2022-01-10 07:06:54,280 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 07:06:54,280 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 23 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:54,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 437 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-01-10 07:06:54,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-01-10 07:06:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2022-01-10 07:06:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 1.338486574450773) internal successors, (1645), 1229 states have internal predecessors, (1645), 0 states have call successors, (0), 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 07:06:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1645 transitions. [2022-01-10 07:06:54,359 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1645 transitions. Word has length 68 [2022-01-10 07:06:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:54,360 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1645 transitions. [2022-01-10 07:06:54,360 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 07:06:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1645 transitions. [2022-01-10 07:06:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:06:54,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:54,361 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 07:06:54,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 07:06:54,568 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 07:06:54,568 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 07:06:54,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2091542657, now seen corresponding path program 1 times [2022-01-10 07:06:54,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:54,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079178244] [2022-01-10 07:06:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:54,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:54,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:54,570 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 07:06:54,570 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 07:06:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:54,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:54,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:54,751 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 07:06:54,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:54,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:54,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079178244] [2022-01-10 07:06:54,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079178244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:54,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:54,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:54,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893624975] [2022-01-10 07:06:54,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:54,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:54,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:54,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:54,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:54,753 INFO L87 Difference]: Start difference. First operand 1230 states and 1645 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 07:06:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:54,896 INFO L93 Difference]: Finished difference Result 2636 states and 3633 transitions. [2022-01-10 07:06:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:54,897 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 07:06:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:54,899 INFO L225 Difference]: With dead ends: 2636 [2022-01-10 07:06:54,899 INFO L226 Difference]: Without dead ends: 1846 [2022-01-10 07:06:54,901 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 07:06:54,904 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 158 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 480 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 07:06:54,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 480 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-01-10 07:06:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1844. [2022-01-10 07:06:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 1.358654367878459) internal successors, (2504), 1843 states have internal predecessors, (2504), 0 states have call successors, (0), 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 07:06:55,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2504 transitions. [2022-01-10 07:06:55,067 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2504 transitions. Word has length 68 [2022-01-10 07:06:55,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:55,068 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 2504 transitions. [2022-01-10 07:06:55,068 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 07:06:55,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2504 transitions. [2022-01-10 07:06:55,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:06:55,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:55,069 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 07:06:55,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 07:06:55,273 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 07:06:55,273 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 07:06:55,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash 627633439, now seen corresponding path program 1 times [2022-01-10 07:06:55,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:55,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606558013] [2022-01-10 07:06:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:55,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:55,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:55,275 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 07:06:55,275 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 07:06:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:55,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:55,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:55,454 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 07:06:55,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:55,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:55,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606558013] [2022-01-10 07:06:55,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606558013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:55,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:55,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:55,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119646271] [2022-01-10 07:06:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:55,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:55,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:55,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:55,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:55,455 INFO L87 Difference]: Start difference. First operand 1844 states and 2504 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 07:06:55,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:55,697 INFO L93 Difference]: Finished difference Result 4304 states and 5980 transitions. [2022-01-10 07:06:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:55,697 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 07:06:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:55,701 INFO L225 Difference]: With dead ends: 4304 [2022-01-10 07:06:55,701 INFO L226 Difference]: Without dead ends: 2900 [2022-01-10 07:06:55,702 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 07:06:55,702 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 153 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 458 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 07:06:55,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 458 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:55,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2022-01-10 07:06:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 2898. [2022-01-10 07:06:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2897 states have (on average 1.37141870900932) internal successors, (3973), 2897 states have internal predecessors, (3973), 0 states have call successors, (0), 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 07:06:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 3973 transitions. [2022-01-10 07:06:55,924 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 3973 transitions. Word has length 69 [2022-01-10 07:06:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:55,925 INFO L470 AbstractCegarLoop]: Abstraction has 2898 states and 3973 transitions. [2022-01-10 07:06:55,925 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 07:06:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 3973 transitions. [2022-01-10 07:06:55,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 07:06:55,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:55,926 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] [2022-01-10 07:06:55,938 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 07:06:56,135 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 07:06:56,135 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 07:06:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1616920134, now seen corresponding path program 1 times [2022-01-10 07:06:56,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:56,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806395896] [2022-01-10 07:06:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:56,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:56,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:56,137 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 07:06:56,138 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 07:06:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:56,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:06:56,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:56,316 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 07:06:56,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:56,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:56,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806395896] [2022-01-10 07:06:56,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806395896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:56,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:56,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:06:56,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837850909] [2022-01-10 07:06:56,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:56,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:06:56,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:06:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:06:56,320 INFO L87 Difference]: Start difference. First operand 2898 states and 3973 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:06:56,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:56,692 INFO L93 Difference]: Finished difference Result 6966 states and 9699 transitions. [2022-01-10 07:06:56,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:06:56,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 07:06:56,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:56,697 INFO L225 Difference]: With dead ends: 6966 [2022-01-10 07:06:56,697 INFO L226 Difference]: Without dead ends: 4439 [2022-01-10 07:06:56,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 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 07:06:56,699 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 149 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 462 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 07:06:56,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 462 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:06:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2022-01-10 07:06:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 4437. [2022-01-10 07:06:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 4436 states have (on average 1.3681244364292156) internal successors, (6069), 4436 states have internal predecessors, (6069), 0 states have call successors, (0), 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 07:06:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 6069 transitions. [2022-01-10 07:06:57,071 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 6069 transitions. Word has length 71 [2022-01-10 07:06:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:57,071 INFO L470 AbstractCegarLoop]: Abstraction has 4437 states and 6069 transitions. [2022-01-10 07:06:57,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 07:06:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 6069 transitions. [2022-01-10 07:06:57,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 07:06:57,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:57,072 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 07:06:57,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 07:06:57,279 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 07:06:57,279 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 07:06:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash 424451902, now seen corresponding path program 1 times [2022-01-10 07:06:57,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:57,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853475491] [2022-01-10 07:06:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:57,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:57,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:57,281 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 07:06:57,281 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 07:06:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:57,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:57,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:57,695 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 07:06:57,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:57,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:57,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853475491] [2022-01-10 07:06:57,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853475491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:57,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:57,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:06:57,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276843078] [2022-01-10 07:06:57,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:57,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:57,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:57,696 INFO L87 Difference]: Start difference. First operand 4437 states and 6069 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 07:06:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:06:58,144 INFO L93 Difference]: Finished difference Result 5273 states and 7224 transitions. [2022-01-10 07:06:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:06:58,145 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 07:06:58,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:06:58,149 INFO L225 Difference]: With dead ends: 5273 [2022-01-10 07:06:58,150 INFO L226 Difference]: Without dead ends: 4436 [2022-01-10 07:06:58,151 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 07:06:58,151 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 46 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:06:58,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 404 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-01-10 07:06:58,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2022-01-10 07:06:58,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 4436. [2022-01-10 07:06:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4436 states, 4435 states have (on average 1.3679819616685456) internal successors, (6067), 4435 states have internal predecessors, (6067), 0 states have call successors, (0), 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 07:06:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4436 states to 4436 states and 6067 transitions. [2022-01-10 07:06:58,520 INFO L78 Accepts]: Start accepts. Automaton has 4436 states and 6067 transitions. Word has length 72 [2022-01-10 07:06:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:06:58,521 INFO L470 AbstractCegarLoop]: Abstraction has 4436 states and 6067 transitions. [2022-01-10 07:06:58,521 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 07:06:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4436 states and 6067 transitions. [2022-01-10 07:06:58,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 07:06:58,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:06:58,522 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 07:06:58,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-01-10 07:06:58,728 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 07:06:58,729 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 07:06:58,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:06:58,729 INFO L85 PathProgramCache]: Analyzing trace with hash -389960093, now seen corresponding path program 1 times [2022-01-10 07:06:58,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:06:58,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874666161] [2022-01-10 07:06:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:06:58,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:06:58,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:06:58,731 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 07:06:58,731 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 07:06:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:06:58,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:06:58,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:06:59,167 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 07:06:59,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:06:59,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:06:59,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874666161] [2022-01-10 07:06:59,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874666161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:06:59,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:06:59,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:06:59,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554838342] [2022-01-10 07:06:59,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:06:59,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:06:59,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:06:59,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:06:59,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:06:59,168 INFO L87 Difference]: Start difference. First operand 4436 states and 6067 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 07:07:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:00,145 INFO L93 Difference]: Finished difference Result 14448 states and 19973 transitions. [2022-01-10 07:07:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:07:00,146 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 07:07:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:00,158 INFO L225 Difference]: With dead ends: 14448 [2022-01-10 07:07:00,158 INFO L226 Difference]: Without dead ends: 10382 [2022-01-10 07:07:00,163 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 07:07:00,163 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 885 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:00,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 542 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:07:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10382 states. [2022-01-10 07:07:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10382 to 8564. [2022-01-10 07:07:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8564 states, 8563 states have (on average 1.341118766787341) internal successors, (11484), 8563 states have internal predecessors, (11484), 0 states have call successors, (0), 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 07:07:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8564 states to 8564 states and 11484 transitions. [2022-01-10 07:07:00,955 INFO L78 Accepts]: Start accepts. Automaton has 8564 states and 11484 transitions. Word has length 72 [2022-01-10 07:07:00,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:00,955 INFO L470 AbstractCegarLoop]: Abstraction has 8564 states and 11484 transitions. [2022-01-10 07:07:00,955 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 07:07:00,955 INFO L276 IsEmpty]: Start isEmpty. Operand 8564 states and 11484 transitions. [2022-01-10 07:07:00,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 07:07:00,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:00,957 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 07:07:00,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 07:07:01,163 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 07:07:01,163 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 07:07:01,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:01,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2011427085, now seen corresponding path program 1 times [2022-01-10 07:07:01,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:01,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991602647] [2022-01-10 07:07:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:01,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:01,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:01,165 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 07:07:01,166 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 07:07:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:01,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:07:01,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:01,354 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 07:07:01,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:01,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:01,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991602647] [2022-01-10 07:07:01,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991602647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:01,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:01,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:01,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150237489] [2022-01-10 07:07:01,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:01,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:01,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:01,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:01,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:01,355 INFO L87 Difference]: Start difference. First operand 8564 states and 11484 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 07:07:03,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:03,200 INFO L93 Difference]: Finished difference Result 18388 states and 24256 transitions. [2022-01-10 07:07:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:07:03,201 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 07:07:03,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:03,221 INFO L225 Difference]: With dead ends: 18388 [2022-01-10 07:07:03,222 INFO L226 Difference]: Without dead ends: 18386 [2022-01-10 07:07:03,226 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 07:07:03,227 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 349 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 952 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 07:07:03,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 952 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:07:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18386 states. [2022-01-10 07:07:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18386 to 9476. [2022-01-10 07:07:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9476 states, 9475 states have (on average 1.3082849604221636) internal successors, (12396), 9475 states have internal predecessors, (12396), 0 states have call successors, (0), 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 07:07:04,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9476 states to 9476 states and 12396 transitions. [2022-01-10 07:07:04,259 INFO L78 Accepts]: Start accepts. Automaton has 9476 states and 12396 transitions. Word has length 73 [2022-01-10 07:07:04,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:04,259 INFO L470 AbstractCegarLoop]: Abstraction has 9476 states and 12396 transitions. [2022-01-10 07:07:04,259 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 07:07:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 9476 states and 12396 transitions. [2022-01-10 07:07:04,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 07:07:04,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:04,261 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 07:07:04,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 07:07:04,465 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 07:07:04,465 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 07:07:04,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:04,466 INFO L85 PathProgramCache]: Analyzing trace with hash 378645958, now seen corresponding path program 1 times [2022-01-10 07:07:04,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:04,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282427301] [2022-01-10 07:07:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:04,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:04,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:04,467 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 07:07:04,468 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 07:07:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:04,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:07:04,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:04,785 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 07:07:04,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:04,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:04,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282427301] [2022-01-10 07:07:04,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282427301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:04,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:04,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:04,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930453] [2022-01-10 07:07:04,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:04,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:07:04,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:04,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:07:04,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:07:04,786 INFO L87 Difference]: Start difference. First operand 9476 states and 12396 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 07:07:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:05,890 INFO L93 Difference]: Finished difference Result 18763 states and 24588 transitions. [2022-01-10 07:07:05,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:07:05,891 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 07:07:05,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:05,901 INFO L225 Difference]: With dead ends: 18763 [2022-01-10 07:07:05,901 INFO L226 Difference]: Without dead ends: 9721 [2022-01-10 07:07:05,909 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 07:07:05,910 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 121 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:05,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 585 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-01-10 07:07:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9721 states. [2022-01-10 07:07:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9721 to 9721. [2022-01-10 07:07:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9721 states, 9720 states have (on average 1.303292181069959) internal successors, (12668), 9720 states have internal predecessors, (12668), 0 states have call successors, (0), 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 07:07:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9721 states to 9721 states and 12668 transitions. [2022-01-10 07:07:06,947 INFO L78 Accepts]: Start accepts. Automaton has 9721 states and 12668 transitions. Word has length 74 [2022-01-10 07:07:06,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:06,947 INFO L470 AbstractCegarLoop]: Abstraction has 9721 states and 12668 transitions. [2022-01-10 07:07:06,947 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 07:07:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 9721 states and 12668 transitions. [2022-01-10 07:07:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 07:07:06,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:06,949 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 07:07:06,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-01-10 07:07:07,155 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 07:07:07,156 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 07:07:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:07,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1519050461, now seen corresponding path program 1 times [2022-01-10 07:07:07,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:07,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630177934] [2022-01-10 07:07:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:07,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:07,158 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 07:07:07,158 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 07:07:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:07,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:07:07,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:07:07,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:07,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:07,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630177934] [2022-01-10 07:07:07,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630177934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:07,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:07,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:07,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157359995] [2022-01-10 07:07:07,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:07,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:07:07,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:07,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:07:07,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:07:07,408 INFO L87 Difference]: Start difference. First operand 9721 states and 12668 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 07:07:09,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:09,350 INFO L93 Difference]: Finished difference Result 20020 states and 25891 transitions. [2022-01-10 07:07:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:07:09,350 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 07:07:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:09,366 INFO L225 Difference]: With dead ends: 20020 [2022-01-10 07:07:09,366 INFO L226 Difference]: Without dead ends: 15114 [2022-01-10 07:07:09,372 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 07:07:09,373 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1321 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:09,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1321 Valid, 579 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:07:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15114 states. [2022-01-10 07:07:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15114 to 9635. [2022-01-10 07:07:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9635 states, 9634 states have (on average 1.3039236039028441) internal successors, (12562), 9634 states have internal predecessors, (12562), 0 states have call successors, (0), 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 07:07:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9635 states to 9635 states and 12562 transitions. [2022-01-10 07:07:10,490 INFO L78 Accepts]: Start accepts. Automaton has 9635 states and 12562 transitions. Word has length 74 [2022-01-10 07:07:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:10,490 INFO L470 AbstractCegarLoop]: Abstraction has 9635 states and 12562 transitions. [2022-01-10 07:07:10,490 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 07:07:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 9635 states and 12562 transitions. [2022-01-10 07:07:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 07:07:10,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:10,492 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 07:07:10,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-01-10 07:07:10,695 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 07:07:10,696 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 07:07:10,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash 417067715, now seen corresponding path program 1 times [2022-01-10 07:07:10,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:10,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587666762] [2022-01-10 07:07:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:10,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:10,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:10,698 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 07:07:10,699 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 07:07:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:10,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:07:10,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:11,279 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 07:07:11,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:11,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:11,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587666762] [2022-01-10 07:07:11,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587666762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:11,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:11,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:07:11,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664650991] [2022-01-10 07:07:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:11,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:07:11,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:11,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:07:11,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:07:11,281 INFO L87 Difference]: Start difference. First operand 9635 states and 12562 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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 07:07:12,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:12,273 INFO L93 Difference]: Finished difference Result 10130 states and 13232 transitions. [2022-01-10 07:07:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:07:12,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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 07:07:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:12,284 INFO L225 Difference]: With dead ends: 10130 [2022-01-10 07:07:12,284 INFO L226 Difference]: Without dead ends: 9624 [2022-01-10 07:07:12,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 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 07:07:12,286 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 32 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:12,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 781 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 191 Unchecked, 0.0s Time] [2022-01-10 07:07:12,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9624 states. [2022-01-10 07:07:13,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9624 to 9623. [2022-01-10 07:07:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9623 states, 9622 states have (on average 1.304094782789441) internal successors, (12548), 9622 states have internal predecessors, (12548), 0 states have call successors, (0), 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 07:07:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9623 states to 9623 states and 12548 transitions. [2022-01-10 07:07:13,318 INFO L78 Accepts]: Start accepts. Automaton has 9623 states and 12548 transitions. Word has length 76 [2022-01-10 07:07:13,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:13,318 INFO L470 AbstractCegarLoop]: Abstraction has 9623 states and 12548 transitions. [2022-01-10 07:07:13,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 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 07:07:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 9623 states and 12548 transitions. [2022-01-10 07:07:13,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 07:07:13,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:13,319 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 07:07:13,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-01-10 07:07:13,519 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 07:07:13,520 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 07:07:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:13,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1033629722, now seen corresponding path program 1 times [2022-01-10 07:07:13,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:13,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744660941] [2022-01-10 07:07:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:13,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:13,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:13,521 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 07:07:13,522 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 07:07:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:13,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:07:13,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:13,921 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 07:07:13,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:13,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:13,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744660941] [2022-01-10 07:07:13,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744660941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:13,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:13,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:07:13,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188307831] [2022-01-10 07:07:13,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:13,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:07:13,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:13,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:07:13,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:07:13,922 INFO L87 Difference]: Start difference. First operand 9623 states and 12548 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 07:07:15,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:15,059 INFO L93 Difference]: Finished difference Result 11124 states and 14545 transitions. [2022-01-10 07:07:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:07:15,060 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 07:07:15,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:15,070 INFO L225 Difference]: With dead ends: 11124 [2022-01-10 07:07:15,070 INFO L226 Difference]: Without dead ends: 10092 [2022-01-10 07:07:15,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 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 07:07:15,072 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 115 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 264 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:15,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1069 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 264 Unchecked, 0.1s Time] [2022-01-10 07:07:15,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10092 states. [2022-01-10 07:07:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10092 to 9598. [2022-01-10 07:07:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9598 states, 9597 states have (on average 1.3044701469209128) internal successors, (12519), 9597 states have internal predecessors, (12519), 0 states have call successors, (0), 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 07:07:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9598 states to 9598 states and 12519 transitions. [2022-01-10 07:07:16,110 INFO L78 Accepts]: Start accepts. Automaton has 9598 states and 12519 transitions. Word has length 76 [2022-01-10 07:07:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:16,110 INFO L470 AbstractCegarLoop]: Abstraction has 9598 states and 12519 transitions. [2022-01-10 07:07:16,110 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 07:07:16,111 INFO L276 IsEmpty]: Start isEmpty. Operand 9598 states and 12519 transitions. [2022-01-10 07:07:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:07:16,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:16,112 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 07:07:16,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-01-10 07:07:16,312 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 07:07:16,312 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 07:07:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash 66932320, now seen corresponding path program 1 times [2022-01-10 07:07:16,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:16,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323497065] [2022-01-10 07:07:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:16,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:16,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:16,318 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 07:07:16,319 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 07:07:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:16,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:16,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:16,757 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 07:07:16,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:16,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:16,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323497065] [2022-01-10 07:07:16,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323497065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:16,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:16,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:16,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065561435] [2022-01-10 07:07:16,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:16,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:16,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:16,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:16,758 INFO L87 Difference]: Start difference. First operand 9598 states and 12519 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 07:07:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:18,042 INFO L93 Difference]: Finished difference Result 12588 states and 16469 transitions. [2022-01-10 07:07:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:18,042 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 07:07:18,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:18,054 INFO L225 Difference]: With dead ends: 12588 [2022-01-10 07:07:18,054 INFO L226 Difference]: Without dead ends: 11572 [2022-01-10 07:07:18,057 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 07:07:18,057 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 200 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:18,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 656 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 202 Unchecked, 0.1s Time] [2022-01-10 07:07:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11572 states. [2022-01-10 07:07:19,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11572 to 9596. [2022-01-10 07:07:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9596 states, 9595 states have (on average 1.3043251693590412) internal successors, (12515), 9595 states have internal predecessors, (12515), 0 states have call successors, (0), 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 07:07:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9596 states to 9596 states and 12515 transitions. [2022-01-10 07:07:19,113 INFO L78 Accepts]: Start accepts. Automaton has 9596 states and 12515 transitions. Word has length 77 [2022-01-10 07:07:19,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:19,113 INFO L470 AbstractCegarLoop]: Abstraction has 9596 states and 12515 transitions. [2022-01-10 07:07:19,114 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 07:07:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand 9596 states and 12515 transitions. [2022-01-10 07:07:19,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:07:19,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:19,115 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 07:07:19,121 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 07:07:19,315 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 07:07:19,315 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 07:07:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:19,316 INFO L85 PathProgramCache]: Analyzing trace with hash -898947003, now seen corresponding path program 1 times [2022-01-10 07:07:19,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:19,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249736876] [2022-01-10 07:07:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:19,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:19,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:19,317 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 07:07:19,319 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 07:07:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:19,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:19,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:19,790 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 07:07:19,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:19,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:19,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249736876] [2022-01-10 07:07:19,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249736876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:19,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:19,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:19,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317137689] [2022-01-10 07:07:19,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:19,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:19,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:19,792 INFO L87 Difference]: Start difference. First operand 9596 states and 12515 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 07:07:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:21,115 INFO L93 Difference]: Finished difference Result 12600 states and 16482 transitions. [2022-01-10 07:07:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:21,115 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 07:07:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:21,132 INFO L225 Difference]: With dead ends: 12600 [2022-01-10 07:07:21,132 INFO L226 Difference]: Without dead ends: 11595 [2022-01-10 07:07:21,137 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 07:07:21,138 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 281 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:21,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 552 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2022-01-10 07:07:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2022-01-10 07:07:22,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 10603. [2022-01-10 07:07:22,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10603 states, 10602 states have (on average 1.3043765327296737) internal successors, (13829), 10602 states have internal predecessors, (13829), 0 states have call successors, (0), 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 07:07:22,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10603 states to 10603 states and 13829 transitions. [2022-01-10 07:07:22,325 INFO L78 Accepts]: Start accepts. Automaton has 10603 states and 13829 transitions. Word has length 77 [2022-01-10 07:07:22,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:22,325 INFO L470 AbstractCegarLoop]: Abstraction has 10603 states and 13829 transitions. [2022-01-10 07:07:22,325 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 07:07:22,325 INFO L276 IsEmpty]: Start isEmpty. Operand 10603 states and 13829 transitions. [2022-01-10 07:07:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:07:22,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:22,326 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 07:07:22,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-01-10 07:07:22,527 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 07:07:22,527 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 07:07:22,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:22,527 INFO L85 PathProgramCache]: Analyzing trace with hash 727217664, now seen corresponding path program 1 times [2022-01-10 07:07:22,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:22,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408496501] [2022-01-10 07:07:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:22,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:22,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:22,529 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 07:07:22,530 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 07:07:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:22,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:22,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:22,942 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 07:07:22,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:22,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:22,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408496501] [2022-01-10 07:07:22,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408496501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:22,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:22,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:22,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192406818] [2022-01-10 07:07:22,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:22,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:22,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:22,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:22,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:22,944 INFO L87 Difference]: Start difference. First operand 10603 states and 13829 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 07:07:24,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:24,421 INFO L93 Difference]: Finished difference Result 15481 states and 20440 transitions. [2022-01-10 07:07:24,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:07:24,422 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 07:07:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:24,434 INFO L225 Difference]: With dead ends: 15481 [2022-01-10 07:07:24,434 INFO L226 Difference]: Without dead ends: 11991 [2022-01-10 07:07:24,438 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 07:07:24,438 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 396 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:24,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 821 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:07:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11991 states. [2022-01-10 07:07:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11991 to 11235. [2022-01-10 07:07:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11235 states, 11234 states have (on average 1.297222716752715) internal successors, (14573), 11234 states have internal predecessors, (14573), 0 states have call successors, (0), 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 07:07:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11235 states to 11235 states and 14573 transitions. [2022-01-10 07:07:25,744 INFO L78 Accepts]: Start accepts. Automaton has 11235 states and 14573 transitions. Word has length 77 [2022-01-10 07:07:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:25,744 INFO L470 AbstractCegarLoop]: Abstraction has 11235 states and 14573 transitions. [2022-01-10 07:07:25,744 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 07:07:25,744 INFO L276 IsEmpty]: Start isEmpty. Operand 11235 states and 14573 transitions. [2022-01-10 07:07:25,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:07:25,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:25,745 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 07:07:25,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-01-10 07:07:25,946 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 07:07:25,946 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 07:07:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:25,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1808075958, now seen corresponding path program 1 times [2022-01-10 07:07:25,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:25,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447686437] [2022-01-10 07:07:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:25,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:25,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:25,948 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 07:07:25,949 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 07:07:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:26,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:26,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:26,402 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 07:07:26,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:26,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:26,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447686437] [2022-01-10 07:07:26,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447686437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:26,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:26,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:26,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875442172] [2022-01-10 07:07:26,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:26,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:26,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:26,404 INFO L87 Difference]: Start difference. First operand 11235 states and 14573 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 07:07:27,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:27,882 INFO L93 Difference]: Finished difference Result 12787 states and 16626 transitions. [2022-01-10 07:07:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:27,882 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 07:07:27,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:27,896 INFO L225 Difference]: With dead ends: 12787 [2022-01-10 07:07:27,896 INFO L226 Difference]: Without dead ends: 12290 [2022-01-10 07:07:27,900 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 07:07:27,900 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 136 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:27,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 547 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 68 Unchecked, 0.1s Time] [2022-01-10 07:07:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12290 states. [2022-01-10 07:07:29,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12290 to 11234. [2022-01-10 07:07:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11234 states, 11233 states have (on average 1.2971601531202706) internal successors, (14571), 11233 states have internal predecessors, (14571), 0 states have call successors, (0), 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 07:07:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11234 states to 11234 states and 14571 transitions. [2022-01-10 07:07:29,224 INFO L78 Accepts]: Start accepts. Automaton has 11234 states and 14571 transitions. Word has length 77 [2022-01-10 07:07:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:29,224 INFO L470 AbstractCegarLoop]: Abstraction has 11234 states and 14571 transitions. [2022-01-10 07:07:29,224 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 07:07:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 11234 states and 14571 transitions. [2022-01-10 07:07:29,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:07:29,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:29,226 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 07:07:29,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-01-10 07:07:29,426 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 07:07:29,426 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 07:07:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:29,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1521012015, now seen corresponding path program 1 times [2022-01-10 07:07:29,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:29,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748822142] [2022-01-10 07:07:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:29,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:29,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:29,430 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 07:07:29,431 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 07:07:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:29,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:29,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:29,819 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 07:07:29,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:29,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:29,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748822142] [2022-01-10 07:07:29,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748822142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:29,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:29,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:29,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743447724] [2022-01-10 07:07:29,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:29,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:29,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:29,821 INFO L87 Difference]: Start difference. First operand 11234 states and 14571 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 07:07:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:31,431 INFO L93 Difference]: Finished difference Result 16112 states and 21182 transitions. [2022-01-10 07:07:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:07:31,432 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 07:07:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:31,446 INFO L225 Difference]: With dead ends: 16112 [2022-01-10 07:07:31,446 INFO L226 Difference]: Without dead ends: 12622 [2022-01-10 07:07:31,452 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 07:07:31,452 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 590 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 741 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 07:07:31,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 741 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:07:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12622 states. [2022-01-10 07:07:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12622 to 11866. [2022-01-10 07:07:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11866 states, 11865 states have (on average 1.290771175726928) internal successors, (15315), 11865 states have internal predecessors, (15315), 0 states have call successors, (0), 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 07:07:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11866 states to 11866 states and 15315 transitions. [2022-01-10 07:07:32,900 INFO L78 Accepts]: Start accepts. Automaton has 11866 states and 15315 transitions. Word has length 77 [2022-01-10 07:07:32,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:32,900 INFO L470 AbstractCegarLoop]: Abstraction has 11866 states and 15315 transitions. [2022-01-10 07:07:32,900 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 07:07:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 11866 states and 15315 transitions. [2022-01-10 07:07:32,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:07:32,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:32,902 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 07:07:32,909 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 07:07:33,109 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 07:07:33,109 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 07:07:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 327108922, now seen corresponding path program 1 times [2022-01-10 07:07:33,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:33,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732982638] [2022-01-10 07:07:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:33,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:33,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:33,111 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 07:07:33,112 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 07:07:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:33,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:33,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:33,533 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 07:07:33,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:33,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:33,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732982638] [2022-01-10 07:07:33,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732982638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:33,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:33,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:07:33,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917638158] [2022-01-10 07:07:33,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:33,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:33,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:33,534 INFO L87 Difference]: Start difference. First operand 11866 states and 15315 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 07:07:35,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:07:35,188 INFO L93 Difference]: Finished difference Result 14730 states and 19074 transitions. [2022-01-10 07:07:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:07:35,188 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 07:07:35,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:07:35,204 INFO L225 Difference]: With dead ends: 14730 [2022-01-10 07:07:35,205 INFO L226 Difference]: Without dead ends: 13272 [2022-01-10 07:07:35,210 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 07:07:35,210 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 265 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:07:35,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 675 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 113 Unchecked, 0.1s Time] [2022-01-10 07:07:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13272 states. [2022-01-10 07:07:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13272 to 13268. [2022-01-10 07:07:36,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13268 states, 13267 states have (on average 1.2918519635185046) internal successors, (17139), 13267 states have internal predecessors, (17139), 0 states have call successors, (0), 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 07:07:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13268 states to 13268 states and 17139 transitions. [2022-01-10 07:07:36,844 INFO L78 Accepts]: Start accepts. Automaton has 13268 states and 17139 transitions. Word has length 77 [2022-01-10 07:07:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:07:36,844 INFO L470 AbstractCegarLoop]: Abstraction has 13268 states and 17139 transitions. [2022-01-10 07:07:36,845 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 07:07:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13268 states and 17139 transitions. [2022-01-10 07:07:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:07:36,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:07:36,846 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 07:07:36,855 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 07:07:37,046 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 07:07:37,047 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 07:07:37,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:07:37,047 INFO L85 PathProgramCache]: Analyzing trace with hash -296741835, now seen corresponding path program 1 times [2022-01-10 07:07:37,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:07:37,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817539043] [2022-01-10 07:07:37,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:07:37,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:07:37,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:07:37,048 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 07:07:37,049 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 07:07:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:07:37,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:07:37,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:07:37,433 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 07:07:37,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:07:37,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:07:37,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817539043] [2022-01-10 07:07:37,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817539043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:07:37,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:07:37,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:07:37,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048337610] [2022-01-10 07:07:37,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:07:37,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:07:37,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:07:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:07:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:07:37,434 INFO L87 Difference]: Start difference. First operand 13268 states and 17139 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)