/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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:10:08,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:10:08,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:10:08,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:10:08,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:10:08,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:10:08,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:10:08,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:10:08,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:10:08,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:10:08,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:10:08,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:10:08,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:10:08,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:10:08,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:10:08,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:10:08,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:10:08,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:10:08,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:10:08,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:10:08,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:10:08,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:10:08,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:10:08,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:10:08,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:10:08,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:10:08,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:10:08,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:10:08,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:10:08,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:10:08,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:10:08,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:10:08,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:10:08,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:10:08,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:10:08,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:10:08,170 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 07:10:08,201 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:10:08,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:10:08,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:10:08,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:10:08,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:10:08,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:10:08,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:10:08,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:10:08,204 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:10:08,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:10:08,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:10:08,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:10:08,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:10:08,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:10:08,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:10:08,206 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:10:08,206 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:10:08,206 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:10:08,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:10:08,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:10:08,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:10:08,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:10:08,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:10:08,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:10:08,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:10:08,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:10:08,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:10:08,208 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:10:08,208 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:10:08,208 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:10:08,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:10:08,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:10:08,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:10:08,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:10:08,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:10:08,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:10:08,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:10:08,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:10:08,463 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:10:08,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-01-10 07:10:08,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529cca2c7/cedce3b1ba1f432492c6e3fa7dc5a328/FLAGb7ebecdca [2022-01-10 07:10:09,277 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:10:09,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-01-10 07:10:09,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529cca2c7/cedce3b1ba1f432492c6e3fa7dc5a328/FLAGb7ebecdca [2022-01-10 07:10:09,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529cca2c7/cedce3b1ba1f432492c6e3fa7dc5a328 [2022-01-10 07:10:09,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:10:09,823 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:10:09,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:10:09,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:10:09,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:10:09,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:10:09" (1/1) ... [2022-01-10 07:10:09,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af502c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:09, skipping insertion in model container [2022-01-10 07:10:09,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:10:09" (1/1) ... [2022-01-10 07:10:09,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:10:10,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:10:10,608 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2022-01-10 07:10:10,645 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2022-01-10 07:10:10,734 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2022-01-10 07:10:10,774 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2022-01-10 07:10:10,797 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2022-01-10 07:10:10,818 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2022-01-10 07:10:10,834 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2022-01-10 07:10:10,854 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2022-01-10 07:10:10,939 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2022-01-10 07:10:10,945 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2022-01-10 07:10:10,958 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2022-01-10 07:10:10,973 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2022-01-10 07:10:11,018 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2022-01-10 07:10:11,063 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2022-01-10 07:10:11,110 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2022-01-10 07:10:11,151 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2022-01-10 07:10:11,198 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2022-01-10 07:10:11,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:10:11,403 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:10:11,501 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2022-01-10 07:10:11,524 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2022-01-10 07:10:11,580 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2022-01-10 07:10:11,592 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2022-01-10 07:10:11,600 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2022-01-10 07:10:11,615 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2022-01-10 07:10:11,626 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2022-01-10 07:10:11,636 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2022-01-10 07:10:11,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2022-01-10 07:10:11,687 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2022-01-10 07:10:11,699 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2022-01-10 07:10:11,707 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2022-01-10 07:10:11,743 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2022-01-10 07:10:11,780 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2022-01-10 07:10:11,874 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2022-01-10 07:10:11,908 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2022-01-10 07:10:11,945 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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2022-01-10 07:10:12,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:10:12,145 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:10:12,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12 WrapperNode [2022-01-10 07:10:12,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:10:12,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:10:12,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:10:12,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:10:12,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (1/1) ... [2022-01-10 07:10:12,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (1/1) ... [2022-01-10 07:10:12,424 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16759 [2022-01-10 07:10:12,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:10:12,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:10:12,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:10:12,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:10:12,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (1/1) ... [2022-01-10 07:10:12,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (1/1) ... [2022-01-10 07:10:12,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (1/1) ... [2022-01-10 07:10:12,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (1/1) ... [2022-01-10 07:10:12,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (1/1) ... [2022-01-10 07:10:12,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (1/1) ... [2022-01-10 07:10:12,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (1/1) ... [2022-01-10 07:10:12,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:10:12,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:10:12,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:10:12,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:10:12,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (1/1) ... [2022-01-10 07:10:12,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:10:12,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:10:12,916 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 07:10:12,939 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 07:10:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:10:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:10:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:10:12,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:10:13,390 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:10:13,393 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:10:20,510 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:10:20,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:10:20,544 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:10:20,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:10:20 BoogieIcfgContainer [2022-01-10 07:10:20,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:10:20,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:10:20,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:10:20,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:10:20,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:10:09" (1/3) ... [2022-01-10 07:10:20,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a183941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:10:20, skipping insertion in model container [2022-01-10 07:10:20,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:12" (2/3) ... [2022-01-10 07:10:20,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a183941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:10:20, skipping insertion in model container [2022-01-10 07:10:20,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:10:20" (3/3) ... [2022-01-10 07:10:20,556 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-01-10 07:10:20,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:10:20,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-01-10 07:10:20,613 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:10:20,618 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 07:10:20,619 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-01-10 07:10:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 3532 states, 3514 states have (on average 1.8264086511098463) internal successors, (6418), 3531 states have internal predecessors, (6418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 07:10:20,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:20,724 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] [2022-01-10 07:10:20,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:20,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -912153875, now seen corresponding path program 1 times [2022-01-10 07:10:20,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:20,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439513979] [2022-01-10 07:10:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:20,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:20,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:20,751 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 07:10:20,753 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 07:10:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:21,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:21,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:21,745 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 07:10:21,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:21,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:21,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439513979] [2022-01-10 07:10:21,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439513979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:21,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:21,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:21,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349859936] [2022-01-10 07:10:21,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:21,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:21,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:21,782 INFO L87 Difference]: Start difference. First operand has 3532 states, 3514 states have (on average 1.8264086511098463) internal successors, (6418), 3531 states have internal predecessors, (6418), 0 states have call successors, (0), 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 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:25,403 INFO L93 Difference]: Finished difference Result 4379 states and 7838 transitions. [2022-01-10 07:10:25,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:25,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 07:10:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:25,433 INFO L225 Difference]: With dead ends: 4379 [2022-01-10 07:10:25,433 INFO L226 Difference]: Without dead ends: 2896 [2022-01-10 07:10:25,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 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 07:10:25,444 INFO L933 BasicCegarLoop]: 5195 mSDtfsCounter, 68 mSDsluCounter, 8428 mSDsCounter, 0 mSdLazyCounter, 4636 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 13623 SdHoareTripleChecker+Invalid, 7037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2400 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:25,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 13623 Invalid, 7037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4636 Invalid, 0 Unknown, 2400 Unchecked, 3.4s Time] [2022-01-10 07:10:25,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2022-01-10 07:10:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2896. [2022-01-10 07:10:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2879 states have (on average 1.3428273706147968) internal successors, (3866), 2895 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 3866 transitions. [2022-01-10 07:10:25,590 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 3866 transitions. Word has length 64 [2022-01-10 07:10:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:25,591 INFO L470 AbstractCegarLoop]: Abstraction has 2896 states and 3866 transitions. [2022-01-10 07:10:25,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 3866 transitions. [2022-01-10 07:10:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 07:10:25,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:25,600 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] [2022-01-10 07:10:25,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:25,812 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 07:10:25,813 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash -919069742, now seen corresponding path program 1 times [2022-01-10 07:10:25,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:25,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303844350] [2022-01-10 07:10:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:25,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:25,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:25,844 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 07:10:25,846 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 07:10:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:26,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:26,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:26,581 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 07:10:26,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:26,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:26,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303844350] [2022-01-10 07:10:26,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303844350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:26,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:26,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:26,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802451983] [2022-01-10 07:10:26,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:26,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:26,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:26,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:26,585 INFO L87 Difference]: Start difference. First operand 2896 states and 3866 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:26,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:26,687 INFO L93 Difference]: Finished difference Result 3709 states and 4968 transitions. [2022-01-10 07:10:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:26,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 07:10:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:26,699 INFO L225 Difference]: With dead ends: 3709 [2022-01-10 07:10:26,699 INFO L226 Difference]: Without dead ends: 2902 [2022-01-10 07:10:26,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 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 07:10:26,703 INFO L933 BasicCegarLoop]: 3854 mSDtfsCounter, 35 mSDsluCounter, 3539 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 7393 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2083 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:26,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 7393 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 2083 Unchecked, 0.0s Time] [2022-01-10 07:10:26,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2022-01-10 07:10:26,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2900. [2022-01-10 07:10:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2883 states have (on average 1.342698577870274) internal successors, (3871), 2899 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 3871 transitions. [2022-01-10 07:10:26,765 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 3871 transitions. Word has length 65 [2022-01-10 07:10:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:26,765 INFO L470 AbstractCegarLoop]: Abstraction has 2900 states and 3871 transitions. [2022-01-10 07:10:26,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 3871 transitions. [2022-01-10 07:10:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 07:10:26,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:26,772 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] [2022-01-10 07:10:26,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 07:10:26,983 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 07:10:26,983 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:26,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1793005613, now seen corresponding path program 1 times [2022-01-10 07:10:26,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:26,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50791114] [2022-01-10 07:10:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:26,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:26,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:26,986 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 07:10:26,988 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 07:10:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:27,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:27,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:27,731 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 07:10:27,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:27,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:27,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50791114] [2022-01-10 07:10:27,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50791114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:27,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:27,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:27,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088837428] [2022-01-10 07:10:27,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:27,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:27,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:27,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:27,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:27,735 INFO L87 Difference]: Start difference. First operand 2900 states and 3871 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:30,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:30,452 INFO L93 Difference]: Finished difference Result 3089 states and 4156 transitions. [2022-01-10 07:10:30,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:30,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 07:10:30,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:30,465 INFO L225 Difference]: With dead ends: 3089 [2022-01-10 07:10:30,465 INFO L226 Difference]: Without dead ends: 2919 [2022-01-10 07:10:30,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 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 07:10:30,468 INFO L933 BasicCegarLoop]: 3843 mSDtfsCounter, 26 mSDsluCounter, 5493 mSDsCounter, 0 mSdLazyCounter, 3963 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 9336 SdHoareTripleChecker+Invalid, 6014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2050 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:30,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 9336 Invalid, 6014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3963 Invalid, 0 Unknown, 2050 Unchecked, 2.6s Time] [2022-01-10 07:10:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2022-01-10 07:10:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2913. [2022-01-10 07:10:30,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2896 states have (on average 1.3428867403314917) internal successors, (3889), 2912 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:30,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3889 transitions. [2022-01-10 07:10:30,518 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3889 transitions. Word has length 65 [2022-01-10 07:10:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:30,520 INFO L470 AbstractCegarLoop]: Abstraction has 2913 states and 3889 transitions. [2022-01-10 07:10:30,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3889 transitions. [2022-01-10 07:10:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:10:30,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:30,527 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] [2022-01-10 07:10:30,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 07:10:30,740 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 07:10:30,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash 691242325, now seen corresponding path program 1 times [2022-01-10 07:10:30,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:30,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344216883] [2022-01-10 07:10:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:30,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:30,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:30,743 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 07:10:30,744 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 07:10:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:31,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:31,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:31,402 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 07:10:31,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:31,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:31,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344216883] [2022-01-10 07:10:31,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344216883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:31,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:31,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:31,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159912897] [2022-01-10 07:10:31,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:31,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:31,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:31,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:31,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:31,407 INFO L87 Difference]: Start difference. First operand 2913 states and 3889 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:32,953 INFO L93 Difference]: Finished difference Result 3293 states and 4421 transitions. [2022-01-10 07:10:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:32,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 07:10:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:32,963 INFO L225 Difference]: With dead ends: 3293 [2022-01-10 07:10:32,963 INFO L226 Difference]: Without dead ends: 2922 [2022-01-10 07:10:32,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 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 07:10:32,965 INFO L933 BasicCegarLoop]: 3848 mSDtfsCounter, 33 mSDsluCounter, 3728 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 7576 SdHoareTripleChecker+Invalid, 3971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2029 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:32,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 7576 Invalid, 3971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1941 Invalid, 0 Unknown, 2029 Unchecked, 1.5s Time] [2022-01-10 07:10:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-01-10 07:10:33,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2918. [2022-01-10 07:10:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2901 states have (on average 1.3426404688038607) internal successors, (3895), 2917 states have internal predecessors, (3895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:33,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 3895 transitions. [2022-01-10 07:10:33,012 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 3895 transitions. Word has length 66 [2022-01-10 07:10:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:33,013 INFO L470 AbstractCegarLoop]: Abstraction has 2918 states and 3895 transitions. [2022-01-10 07:10:33,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:33,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 3895 transitions. [2022-01-10 07:10:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:10:33,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:33,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:33,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 07:10:33,229 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 07:10:33,230 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash 215811001, now seen corresponding path program 1 times [2022-01-10 07:10:33,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:33,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935060181] [2022-01-10 07:10:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:33,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:33,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:33,233 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 07:10:33,235 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 07:10:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:33,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:33,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:34,304 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 07:10:34,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:34,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:34,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935060181] [2022-01-10 07:10:34,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935060181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:34,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:34,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:10:34,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375816376] [2022-01-10 07:10:34,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:34,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:10:34,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:10:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:34,306 INFO L87 Difference]: Start difference. First operand 2918 states and 3895 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:34,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:34,399 INFO L93 Difference]: Finished difference Result 3065 states and 4120 transitions. [2022-01-10 07:10:34,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:10:34,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 07:10:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:34,409 INFO L225 Difference]: With dead ends: 3065 [2022-01-10 07:10:34,410 INFO L226 Difference]: Without dead ends: 2946 [2022-01-10 07:10:34,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:34,412 INFO L933 BasicCegarLoop]: 3836 mSDtfsCounter, 50 mSDsluCounter, 5486 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 9322 SdHoareTripleChecker+Invalid, 4144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4141 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:34,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 9322 Invalid, 4144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 4141 Unchecked, 0.0s Time] [2022-01-10 07:10:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2022-01-10 07:10:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2939. [2022-01-10 07:10:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2922 states have (on average 1.3432580424366871) internal successors, (3925), 2938 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 3925 transitions. [2022-01-10 07:10:34,457 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 3925 transitions. Word has length 66 [2022-01-10 07:10:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:34,457 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 3925 transitions. [2022-01-10 07:10:34,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 3925 transitions. [2022-01-10 07:10:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:10:34,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:34,462 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] [2022-01-10 07:10:34,473 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 07:10:34,673 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 07:10:34,674 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:34,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:34,675 INFO L85 PathProgramCache]: Analyzing trace with hash -531315301, now seen corresponding path program 1 times [2022-01-10 07:10:34,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:34,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590304564] [2022-01-10 07:10:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:34,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:34,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:34,677 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 07:10:34,678 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 07:10:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:35,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:10:35,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:35,425 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 07:10:35,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:35,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:35,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590304564] [2022-01-10 07:10:35,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590304564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:35,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:35,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:10:35,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115979608] [2022-01-10 07:10:35,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:35,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:10:35,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:10:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:10:35,427 INFO L87 Difference]: Start difference. First operand 2939 states and 3925 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:37,856 INFO L93 Difference]: Finished difference Result 3116 states and 4193 transitions. [2022-01-10 07:10:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:10:37,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 07:10:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:37,864 INFO L225 Difference]: With dead ends: 3116 [2022-01-10 07:10:37,864 INFO L226 Difference]: Without dead ends: 2952 [2022-01-10 07:10:37,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:37,869 INFO L933 BasicCegarLoop]: 3839 mSDtfsCounter, 27 mSDsluCounter, 7441 mSDsCounter, 0 mSdLazyCounter, 3955 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 11280 SdHoareTripleChecker+Invalid, 7941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3985 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:37,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 11280 Invalid, 7941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3955 Invalid, 0 Unknown, 3985 Unchecked, 2.3s Time] [2022-01-10 07:10:37,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-01-10 07:10:37,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2946. [2022-01-10 07:10:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2929 states have (on average 1.3424376920450665) internal successors, (3932), 2945 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 3932 transitions. [2022-01-10 07:10:37,920 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 3932 transitions. Word has length 66 [2022-01-10 07:10:37,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:37,921 INFO L470 AbstractCegarLoop]: Abstraction has 2946 states and 3932 transitions. [2022-01-10 07:10:37,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 3932 transitions. [2022-01-10 07:10:37,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:10:37,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:37,927 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] [2022-01-10 07:10:37,942 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 07:10:38,139 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 07:10:38,140 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:38,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:38,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1249741754, now seen corresponding path program 1 times [2022-01-10 07:10:38,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:38,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517414200] [2022-01-10 07:10:38,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:38,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:38,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:38,142 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 07:10:38,142 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 07:10:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:38,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:38,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:38,597 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 07:10:38,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:38,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:38,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517414200] [2022-01-10 07:10:38,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517414200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:38,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:38,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:38,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570584628] [2022-01-10 07:10:38,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:38,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:38,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:38,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:38,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:38,600 INFO L87 Difference]: Start difference. First operand 2946 states and 3932 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:38,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:38,981 INFO L93 Difference]: Finished difference Result 6073 states and 8154 transitions. [2022-01-10 07:10:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:38,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 07:10:38,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:38,993 INFO L225 Difference]: With dead ends: 6073 [2022-01-10 07:10:38,993 INFO L226 Difference]: Without dead ends: 3759 [2022-01-10 07:10:38,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 07:10:38,998 INFO L933 BasicCegarLoop]: 3657 mSDtfsCounter, 3642 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3642 SdHoareTripleChecker+Valid, 4775 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:38,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3642 Valid, 4775 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:10:39,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-01-10 07:10:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3739. [2022-01-10 07:10:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 3722 states have (on average 1.3420204191295002) internal successors, (4995), 3738 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 4995 transitions. [2022-01-10 07:10:39,065 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 4995 transitions. Word has length 66 [2022-01-10 07:10:39,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:39,065 INFO L470 AbstractCegarLoop]: Abstraction has 3739 states and 4995 transitions. [2022-01-10 07:10:39,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 4995 transitions. [2022-01-10 07:10:39,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:10:39,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:39,073 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] [2022-01-10 07:10:39,089 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 07:10:39,283 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 07:10:39,284 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1290064569, now seen corresponding path program 1 times [2022-01-10 07:10:39,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:39,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890190844] [2022-01-10 07:10:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:39,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:39,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:39,286 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 07:10:39,287 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 07:10:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:39,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:39,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:39,733 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 07:10:39,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:39,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:39,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890190844] [2022-01-10 07:10:39,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890190844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:39,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:39,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:39,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528400954] [2022-01-10 07:10:39,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:39,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:39,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:39,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:39,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:39,735 INFO L87 Difference]: Start difference. First operand 3739 states and 4995 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:40,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:40,236 INFO L93 Difference]: Finished difference Result 8083 states and 10849 transitions. [2022-01-10 07:10:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:40,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 07:10:40,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:40,247 INFO L225 Difference]: With dead ends: 8083 [2022-01-10 07:10:40,247 INFO L226 Difference]: Without dead ends: 4426 [2022-01-10 07:10:40,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 07:10:40,253 INFO L933 BasicCegarLoop]: 2866 mSDtfsCounter, 2735 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 4207 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:40,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 4207 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:10:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2022-01-10 07:10:40,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4408. [2022-01-10 07:10:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4391 states have (on average 1.3404691414256433) internal successors, (5886), 4407 states have internal predecessors, (5886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5886 transitions. [2022-01-10 07:10:40,352 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5886 transitions. Word has length 66 [2022-01-10 07:10:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:40,353 INFO L470 AbstractCegarLoop]: Abstraction has 4408 states and 5886 transitions. [2022-01-10 07:10:40,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5886 transitions. [2022-01-10 07:10:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:10:40,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:40,360 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 07:10:40,373 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 07:10:40,573 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 07:10:40,574 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1567621872, now seen corresponding path program 1 times [2022-01-10 07:10:40,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:40,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8950423] [2022-01-10 07:10:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:40,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:40,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:40,576 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 07:10:40,577 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 07:10:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:40,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:40,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:41,650 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 07:10:41,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:41,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:41,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8950423] [2022-01-10 07:10:41,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8950423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:41,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:41,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:10:41,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111326163] [2022-01-10 07:10:41,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:41,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:10:41,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:41,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:10:41,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:41,653 INFO L87 Difference]: Start difference. First operand 4408 states and 5886 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 07:10:42,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:42,935 INFO L93 Difference]: Finished difference Result 4418 states and 5895 transitions. [2022-01-10 07:10:42,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:10:42,936 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 07:10:42,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:42,947 INFO L225 Difference]: With dead ends: 4418 [2022-01-10 07:10:42,947 INFO L226 Difference]: Without dead ends: 4410 [2022-01-10 07:10:42,949 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 07:10:42,949 INFO L933 BasicCegarLoop]: 3040 mSDtfsCounter, 51 mSDsluCounter, 5976 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 9016 SdHoareTripleChecker+Invalid, 4664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3094 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:42,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 9016 Invalid, 4664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1569 Invalid, 0 Unknown, 3094 Unchecked, 1.2s Time] [2022-01-10 07:10:42,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4410 states. [2022-01-10 07:10:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4410 to 4408. [2022-01-10 07:10:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4391 states have (on average 1.3402414028695058) internal successors, (5885), 4407 states have internal predecessors, (5885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:43,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5885 transitions. [2022-01-10 07:10:43,028 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5885 transitions. Word has length 67 [2022-01-10 07:10:43,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:43,028 INFO L470 AbstractCegarLoop]: Abstraction has 4408 states and 5885 transitions. [2022-01-10 07:10:43,029 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 07:10:43,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5885 transitions. [2022-01-10 07:10:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:10:43,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:43,036 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 07:10:43,051 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 07:10:43,248 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 07:10:43,248 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:43,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1274779525, now seen corresponding path program 1 times [2022-01-10 07:10:43,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:43,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176286733] [2022-01-10 07:10:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:43,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:43,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:43,250 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 07:10:43,251 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 07:10:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:43,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:43,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:43,845 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 07:10:43,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:43,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:43,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176286733] [2022-01-10 07:10:43,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176286733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:43,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:43,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:43,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327580759] [2022-01-10 07:10:43,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:43,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:43,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:43,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:43,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:43,847 INFO L87 Difference]: Start difference. First operand 4408 states and 5885 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 07:10:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:45,666 INFO L93 Difference]: Finished difference Result 4846 states and 6556 transitions. [2022-01-10 07:10:45,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:45,667 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 07:10:45,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:45,674 INFO L225 Difference]: With dead ends: 4846 [2022-01-10 07:10:45,674 INFO L226 Difference]: Without dead ends: 4402 [2022-01-10 07:10:45,676 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 07:10:45,676 INFO L933 BasicCegarLoop]: 3046 mSDtfsCounter, 24 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 3078 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 7458 SdHoareTripleChecker+Invalid, 4680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1601 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:45,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 7458 Invalid, 4680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3078 Invalid, 0 Unknown, 1601 Unchecked, 1.7s Time] [2022-01-10 07:10:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2022-01-10 07:10:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4402. [2022-01-10 07:10:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 4385 states have (on average 1.340478905359179) internal successors, (5878), 4401 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5878 transitions. [2022-01-10 07:10:45,740 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5878 transitions. Word has length 67 [2022-01-10 07:10:45,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:45,741 INFO L470 AbstractCegarLoop]: Abstraction has 4402 states and 5878 transitions. [2022-01-10 07:10:45,741 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 07:10:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5878 transitions. [2022-01-10 07:10:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:10:45,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:45,747 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 07:10:45,759 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 07:10:45,955 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 07:10:45,956 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:45,956 INFO L85 PathProgramCache]: Analyzing trace with hash 435988824, now seen corresponding path program 1 times [2022-01-10 07:10:45,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:45,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93369405] [2022-01-10 07:10:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:45,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:45,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:45,958 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 07:10:45,959 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 07:10:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:46,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:46,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:46,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:46,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:46,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93369405] [2022-01-10 07:10:46,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93369405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:46,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:46,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:10:46,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367515055] [2022-01-10 07:10:46,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:46,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:10:46,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:46,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:10:46,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:46,939 INFO L87 Difference]: Start difference. First operand 4402 states and 5878 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 07:10:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:48,034 INFO L93 Difference]: Finished difference Result 4445 states and 5937 transitions. [2022-01-10 07:10:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:10:48,034 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 07:10:48,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:48,041 INFO L225 Difference]: With dead ends: 4445 [2022-01-10 07:10:48,042 INFO L226 Difference]: Without dead ends: 4440 [2022-01-10 07:10:48,043 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 07:10:48,043 INFO L933 BasicCegarLoop]: 3038 mSDtfsCounter, 91 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 4774 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:48,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 4774 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1482 Invalid, 0 Unknown, 94 Unchecked, 1.0s Time] [2022-01-10 07:10:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2022-01-10 07:10:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 4415. [2022-01-10 07:10:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4415 states, 4398 states have (on average 1.3412914961346067) internal successors, (5899), 4414 states have internal predecessors, (5899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 5899 transitions. [2022-01-10 07:10:48,108 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 5899 transitions. Word has length 67 [2022-01-10 07:10:48,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:48,108 INFO L470 AbstractCegarLoop]: Abstraction has 4415 states and 5899 transitions. [2022-01-10 07:10:48,108 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 07:10:48,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 5899 transitions. [2022-01-10 07:10:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:10:48,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:48,114 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 07:10:48,127 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 07:10:48,324 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 07:10:48,325 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:48,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:48,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2090357239, now seen corresponding path program 1 times [2022-01-10 07:10:48,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:48,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110463354] [2022-01-10 07:10:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:48,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:48,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:48,327 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 07:10:48,327 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 07:10:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:48,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 07:10:48,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:49,802 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 07:10:49,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:49,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:49,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110463354] [2022-01-10 07:10:49,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110463354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:49,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:49,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 07:10:49,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633906627] [2022-01-10 07:10:49,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:49,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 07:10:49,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 07:10:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-10 07:10:49,804 INFO L87 Difference]: Start difference. First operand 4415 states and 5899 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 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 07:10:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:50,557 INFO L93 Difference]: Finished difference Result 4745 states and 6421 transitions. [2022-01-10 07:10:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:10:50,558 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 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 07:10:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:50,563 INFO L225 Difference]: With dead ends: 4745 [2022-01-10 07:10:50,563 INFO L226 Difference]: Without dead ends: 4399 [2022-01-10 07:10:50,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-10 07:10:50,565 INFO L933 BasicCegarLoop]: 3015 mSDtfsCounter, 90 mSDsluCounter, 5366 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 8381 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:50,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 8381 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 765 Invalid, 0 Unknown, 72 Unchecked, 0.7s Time] [2022-01-10 07:10:50,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2022-01-10 07:10:50,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4399. [2022-01-10 07:10:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 4383 states have (on average 1.3413187314624686) internal successors, (5879), 4398 states have internal predecessors, (5879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 5879 transitions. [2022-01-10 07:10:50,627 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 5879 transitions. Word has length 67 [2022-01-10 07:10:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:50,627 INFO L470 AbstractCegarLoop]: Abstraction has 4399 states and 5879 transitions. [2022-01-10 07:10:50,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 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 07:10:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 5879 transitions. [2022-01-10 07:10:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:10:50,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:50,632 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 07:10:50,644 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 07:10:50,843 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 07:10:50,844 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:50,844 INFO L85 PathProgramCache]: Analyzing trace with hash 244544229, now seen corresponding path program 1 times [2022-01-10 07:10:50,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:50,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255845146] [2022-01-10 07:10:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:50,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:50,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:50,846 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 07:10:50,846 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 07:10:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:51,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:51,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:51,357 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 07:10:51,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:51,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:51,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255845146] [2022-01-10 07:10:51,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255845146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:51,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:51,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:51,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139778524] [2022-01-10 07:10:51,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:51,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:51,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:51,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:51,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:51,359 INFO L87 Difference]: Start difference. First operand 4399 states and 5879 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 07:10:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:51,533 INFO L93 Difference]: Finished difference Result 6590 states and 8954 transitions. [2022-01-10 07:10:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:51,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 07:10:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:51,542 INFO L225 Difference]: With dead ends: 6590 [2022-01-10 07:10:51,543 INFO L226 Difference]: Without dead ends: 4754 [2022-01-10 07:10:51,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:51,547 INFO L933 BasicCegarLoop]: 2363 mSDtfsCounter, 2341 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:51,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2341 Valid, 3030 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:10:51,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2022-01-10 07:10:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 4736. [2022-01-10 07:10:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4736 states, 4723 states have (on average 1.3529536311666315) internal successors, (6390), 4735 states have internal predecessors, (6390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 6390 transitions. [2022-01-10 07:10:51,633 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 6390 transitions. Word has length 67 [2022-01-10 07:10:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:51,633 INFO L470 AbstractCegarLoop]: Abstraction has 4736 states and 6390 transitions. [2022-01-10 07:10:51,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 07:10:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 6390 transitions. [2022-01-10 07:10:51,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:10:51,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:51,639 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 07:10:51,651 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 07:10:51,850 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 07:10:51,850 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:51,851 INFO L85 PathProgramCache]: Analyzing trace with hash 822338575, now seen corresponding path program 1 times [2022-01-10 07:10:51,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:51,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946237105] [2022-01-10 07:10:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:51,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:51,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:51,853 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 07:10:51,853 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 07:10:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:52,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 07:10:52,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:53,822 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 07:10:53,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:53,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946237105] [2022-01-10 07:10:53,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946237105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:53,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:53,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-10 07:10:53,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910273052] [2022-01-10 07:10:53,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:53,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 07:10:53,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:53,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 07:10:53,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-10 07:10:53,824 INFO L87 Difference]: Start difference. First operand 4736 states and 6390 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 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 07:10:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:54,293 INFO L93 Difference]: Finished difference Result 5362 states and 7383 transitions. [2022-01-10 07:10:54,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:10:54,293 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 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 07:10:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:54,299 INFO L225 Difference]: With dead ends: 5362 [2022-01-10 07:10:54,300 INFO L226 Difference]: Without dead ends: 4726 [2022-01-10 07:10:54,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-10 07:10:54,302 INFO L933 BasicCegarLoop]: 2386 mSDtfsCounter, 36 mSDsluCounter, 19156 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 21542 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1540 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:54,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 21542 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 507 Invalid, 0 Unknown, 1540 Unchecked, 0.4s Time] [2022-01-10 07:10:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2022-01-10 07:10:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4726. [2022-01-10 07:10:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4726 states, 4714 states have (on average 1.3525668222316505) internal successors, (6376), 4725 states have internal predecessors, (6376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4726 states to 4726 states and 6376 transitions. [2022-01-10 07:10:54,387 INFO L78 Accepts]: Start accepts. Automaton has 4726 states and 6376 transitions. Word has length 67 [2022-01-10 07:10:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:54,388 INFO L470 AbstractCegarLoop]: Abstraction has 4726 states and 6376 transitions. [2022-01-10 07:10:54,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 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 07:10:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4726 states and 6376 transitions. [2022-01-10 07:10:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:54,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:54,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:54,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-01-10 07:10:54,604 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 07:10:54,604 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:54,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:54,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1877034391, now seen corresponding path program 1 times [2022-01-10 07:10:54,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:54,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849496233] [2022-01-10 07:10:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:54,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:54,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:54,607 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 07:10:54,608 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 07:10:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:54,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 07:10:54,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:56,246 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 07:10:56,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:56,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:56,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849496233] [2022-01-10 07:10:56,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849496233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:56,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:56,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 07:10:56,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55168822] [2022-01-10 07:10:56,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:56,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 07:10:56,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 07:10:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-10 07:10:56,248 INFO L87 Difference]: Start difference. First operand 4726 states and 6376 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 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 07:10:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:56,890 INFO L93 Difference]: Finished difference Result 5328 states and 7333 transitions. [2022-01-10 07:10:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:10:56,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 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 07:10:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:56,897 INFO L225 Difference]: With dead ends: 5328 [2022-01-10 07:10:56,897 INFO L226 Difference]: Without dead ends: 4608 [2022-01-10 07:10:56,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-10 07:10:56,899 INFO L933 BasicCegarLoop]: 2330 mSDtfsCounter, 79 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 6498 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:56,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 6498 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 615 Invalid, 0 Unknown, 65 Unchecked, 0.5s Time] [2022-01-10 07:10:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4608 states. [2022-01-10 07:10:56,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4608 to 4608. [2022-01-10 07:10:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 4597 states have (on average 1.3521862083967806) internal successors, (6216), 4607 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 6216 transitions. [2022-01-10 07:10:56,971 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 6216 transitions. Word has length 68 [2022-01-10 07:10:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:56,971 INFO L470 AbstractCegarLoop]: Abstraction has 4608 states and 6216 transitions. [2022-01-10 07:10:56,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 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 07:10:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 6216 transitions. [2022-01-10 07:10:56,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:56,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:56,979 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 07:10:56,990 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 07:10:57,191 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 07:10:57,191 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash -312809429, now seen corresponding path program 1 times [2022-01-10 07:10:57,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:57,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45820056] [2022-01-10 07:10:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:57,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:57,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:57,193 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 07:10:57,193 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 07:10:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:57,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:57,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:57,611 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 07:10:57,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:57,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:57,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45820056] [2022-01-10 07:10:57,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45820056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:57,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:57,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:57,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785737391] [2022-01-10 07:10:57,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:57,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:57,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:57,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:57,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:57,614 INFO L87 Difference]: Start difference. First operand 4608 states and 6216 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 07:10:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:57,825 INFO L93 Difference]: Finished difference Result 6991 states and 9606 transitions. [2022-01-10 07:10:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:57,826 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 07:10:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:57,832 INFO L225 Difference]: With dead ends: 6991 [2022-01-10 07:10:57,832 INFO L226 Difference]: Without dead ends: 4474 [2022-01-10 07:10:57,835 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 07:10:57,835 INFO L933 BasicCegarLoop]: 1770 mSDtfsCounter, 1775 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:57,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1775 Valid, 2156 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:10:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2022-01-10 07:10:57,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 4466. [2022-01-10 07:10:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4458 states have (on average 1.3716913414087035) internal successors, (6115), 4465 states have internal predecessors, (6115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:57,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 6115 transitions. [2022-01-10 07:10:57,916 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 6115 transitions. Word has length 68 [2022-01-10 07:10:57,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:57,916 INFO L470 AbstractCegarLoop]: Abstraction has 4466 states and 6115 transitions. [2022-01-10 07:10:57,916 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 07:10:57,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 6115 transitions. [2022-01-10 07:10:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:57,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:57,920 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 07:10:57,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:58,131 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 07:10:58,131 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:10:58,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash 702049040, now seen corresponding path program 1 times [2022-01-10 07:10:58,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:58,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865438502] [2022-01-10 07:10:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:58,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:58,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:58,133 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 07:10:58,134 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 07:10:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:58,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:10:58,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:58,797 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 07:10:58,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:58,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:58,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865438502] [2022-01-10 07:10:58,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865438502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:58,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:58,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:10:58,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25006542] [2022-01-10 07:10:58,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:58,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:10:58,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:58,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:10:58,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:10:58,799 INFO L87 Difference]: Start difference. First operand 4466 states and 6115 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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 07:10:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:59,804 INFO L93 Difference]: Finished difference Result 5900 states and 8318 transitions. [2022-01-10 07:10:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:10:59,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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 07:10:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:59,809 INFO L225 Difference]: With dead ends: 5900 [2022-01-10 07:10:59,809 INFO L226 Difference]: Without dead ends: 4466 [2022-01-10 07:10:59,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 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 07:10:59,811 INFO L933 BasicCegarLoop]: 1839 mSDtfsCounter, 30 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:59,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 3812 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1748 Invalid, 0 Unknown, 28 Unchecked, 0.9s Time] [2022-01-10 07:10:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2022-01-10 07:10:59,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 4466. [2022-01-10 07:10:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4458 states have (on average 1.3714670255720054) internal successors, (6114), 4465 states have internal predecessors, (6114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 6114 transitions. [2022-01-10 07:10:59,891 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 6114 transitions. Word has length 68 [2022-01-10 07:10:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:59,892 INFO L470 AbstractCegarLoop]: Abstraction has 4466 states and 6114 transitions. [2022-01-10 07:10:59,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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 07:10:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 6114 transitions. [2022-01-10 07:10:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:59,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:59,896 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 07:10:59,907 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 07:11:00,107 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 07:11:00,107 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-01-10 07:11:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1625518918, now seen corresponding path program 1 times [2022-01-10 07:11:00,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:00,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393519130] [2022-01-10 07:11:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:00,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:00,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:00,110 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 07:11:00,112 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 07:11:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:00,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:11:00,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:01,034 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 07:11:01,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:01,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:01,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393519130] [2022-01-10 07:11:01,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393519130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:01,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:01,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:11:01,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954559161] [2022-01-10 07:11:01,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:01,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:11:01,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:01,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:11:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:11:01,036 INFO L87 Difference]: Start difference. First operand 4466 states and 6114 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)