/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:43:23,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:43:23,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:43:23,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:43:23,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:43:23,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:43:23,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:43:23,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:43:23,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:43:23,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:43:23,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:43:23,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:43:23,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:43:23,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:43:23,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:43:23,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:43:23,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:43:23,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:43:23,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:43:23,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:43:23,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:43:23,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:43:23,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:43:23,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:43:23,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:43:23,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:43:23,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:43:23,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:43:23,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:43:23,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:43:23,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:43:23,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:43:23,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:43:23,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:43:23,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:43:23,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:43:23,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:43:23,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:43:23,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:43:23,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:43:23,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:43:23,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:43:23,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:43:23,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:43:23,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:43:23,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:43:23,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:43:23,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:43:23,360 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:43:23,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:43:23,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:43:23,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:43:23,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:43:23,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:43:23,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:43:23,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:43:23,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:43:23,361 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:43:23,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:43:23,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:43:23,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:43:23,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:43:23,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:43:23,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:43:23,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:43:23,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:43:23,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:43:23,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:43:23,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:43:23,362 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:43:23,362 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:43:23,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:43:23,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:43:23,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:43:23,363 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:43:23,364 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:43:23,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:43:23,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:43:23,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:43:23,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:43:23,567 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:43:23,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-01-11 00:43:23,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e681ac4/2ca0a17a12a4413da0c19ae1bd5ba3ee/FLAG9b0e8df12 [2022-01-11 00:43:24,210 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:43:24,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-01-11 00:43:24,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e681ac4/2ca0a17a12a4413da0c19ae1bd5ba3ee/FLAG9b0e8df12 [2022-01-11 00:43:24,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e681ac4/2ca0a17a12a4413da0c19ae1bd5ba3ee [2022-01-11 00:43:24,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:43:24,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:43:24,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:43:24,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:43:24,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:43:24,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:43:24" (1/1) ... [2022-01-11 00:43:24,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2edbca31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:24, skipping insertion in model container [2022-01-11 00:43:24,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:43:24" (1/1) ... [2022-01-11 00:43:24,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:43:24,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:43:25,013 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2022-01-11 00:43:25,040 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2022-01-11 00:43:25,048 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2022-01-11 00:43:25,052 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2022-01-11 00:43:25,063 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2022-01-11 00:43:25,067 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2022-01-11 00:43:25,074 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2022-01-11 00:43:25,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:43:25,410 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:43:25,462 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2022-01-11 00:43:25,473 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2022-01-11 00:43:25,481 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2022-01-11 00:43:25,484 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2022-01-11 00:43:25,491 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2022-01-11 00:43:25,493 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2022-01-11 00:43:25,498 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.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2022-01-11 00:43:25,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:43:25,700 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:43:25,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25 WrapperNode [2022-01-11 00:43:25,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:43:25,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:43:25,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:43:25,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:43:25,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (1/1) ... [2022-01-11 00:43:25,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (1/1) ... [2022-01-11 00:43:25,887 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6997 [2022-01-11 00:43:25,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:43:25,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:43:25,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:43:25,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:43:25,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (1/1) ... [2022-01-11 00:43:25,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (1/1) ... [2022-01-11 00:43:25,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (1/1) ... [2022-01-11 00:43:25,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (1/1) ... [2022-01-11 00:43:25,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (1/1) ... [2022-01-11 00:43:25,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (1/1) ... [2022-01-11 00:43:26,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (1/1) ... [2022-01-11 00:43:26,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:43:26,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:43:26,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:43:26,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:43:26,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (1/1) ... [2022-01-11 00:43:26,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:43:26,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:43:26,082 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) [2022-01-11 00:43:26,084 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 [2022-01-11 00:43:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:43:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:43:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:43:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:43:26,433 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:43:26,434 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:43:29,255 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:43:29,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:43:29,270 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:43:29,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:43:29 BoogieIcfgContainer [2022-01-11 00:43:29,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:43:29,273 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:43:29,273 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:43:29,274 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:43:29,276 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:43:29" (1/1) ... [2022-01-11 00:43:30,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:43:30 BasicIcfg [2022-01-11 00:43:30,940 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:43:30,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:43:30,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:43:30,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:43:30,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:43:24" (1/4) ... [2022-01-11 00:43:30,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d26e456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:43:30, skipping insertion in model container [2022-01-11 00:43:30,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:43:25" (2/4) ... [2022-01-11 00:43:30,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d26e456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:43:30, skipping insertion in model container [2022-01-11 00:43:30,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:43:29" (3/4) ... [2022-01-11 00:43:30,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d26e456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:43:30, skipping insertion in model container [2022-01-11 00:43:30,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:43:30" (4/4) ... [2022-01-11 00:43:30,948 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.cTransformedIcfg [2022-01-11 00:43:30,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:43:30,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-01-11 00:43:31,001 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:43:31,006 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 [2022-01-11 00:43:31,006 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-11 00:43:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 1106 states, 1098 states have (on average 1.8852459016393444) internal successors, (2070), 1105 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:43:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 00:43:31,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:43:31,059 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] [2022-01-11 00:43:31,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 00:43:31,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:43:31,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1766548478, now seen corresponding path program 1 times [2022-01-11 00:43:31,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:43:31,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795652775] [2022-01-11 00:43:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:43:31,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:43:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:43:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:43:31,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:43:31,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795652775] [2022-01-11 00:43:31,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795652775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:43:31,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:43:31,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:43:31,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610219298] [2022-01-11 00:43:31,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:43:31,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:43:31,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:43:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:43:31,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:43:31,942 INFO L87 Difference]: Start difference. First operand has 1106 states, 1098 states have (on average 1.8852459016393444) internal successors, (2070), 1105 states have internal predecessors, (2070), 0 states have call successors, (0), 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 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2022-01-11 00:43:36,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:43:40,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:43:40,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:43:40,587 INFO L93 Difference]: Finished difference Result 2170 states and 3984 transitions. [2022-01-11 00:43:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:43:40,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 [2022-01-11 00:43:40,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:43:40,609 INFO L225 Difference]: With dead ends: 2170 [2022-01-11 00:43:40,609 INFO L226 Difference]: Without dead ends: 1178 [2022-01-11 00:43:40,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-11 00:43:40,622 INFO L933 BasicCegarLoop]: 1973 mSDtfsCounter, 5139 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5139 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:43:40,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5139 Valid, 4592 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 992 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-01-11 00:43:40,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-01-11 00:43:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1092. [2022-01-11 00:43:40,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1085 states have (on average 1.3161290322580645) internal successors, (1428), 1091 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:43:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1428 transitions. [2022-01-11 00:43:40,738 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1428 transitions. Word has length 64 [2022-01-11 00:43:40,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:43:40,739 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1428 transitions. [2022-01-11 00:43:40,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2022-01-11 00:43:40,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1428 transitions. [2022-01-11 00:43:40,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 00:43:40,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:43:40,741 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] [2022-01-11 00:43:40,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:43:40,742 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 00:43:40,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:43:40,744 INFO L85 PathProgramCache]: Analyzing trace with hash -679722314, now seen corresponding path program 1 times [2022-01-11 00:43:40,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:43:40,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256811235] [2022-01-11 00:43:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:43:40,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:43:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:43:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:43:40,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:43:40,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256811235] [2022-01-11 00:43:40,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256811235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:43:40,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:43:40,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:43:40,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644522687] [2022-01-11 00:43:40,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:43:40,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:43:40,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:43:40,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:43:40,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:43:40,947 INFO L87 Difference]: Start difference. First operand 1092 states and 1428 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-01-11 00:43:41,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:43:41,069 INFO L93 Difference]: Finished difference Result 1899 states and 2564 transitions. [2022-01-11 00:43:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:43:41,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 [2022-01-11 00:43:41,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:43:41,074 INFO L225 Difference]: With dead ends: 1899 [2022-01-11 00:43:41,074 INFO L226 Difference]: Without dead ends: 1588 [2022-01-11 00:43:41,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:43:41,076 INFO L933 BasicCegarLoop]: 1639 mSDtfsCounter, 888 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:43:41,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 2577 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:43:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2022-01-11 00:43:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1580. [2022-01-11 00:43:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1573 states have (on average 1.326764144945963) internal successors, (2087), 1579 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:43:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2087 transitions. [2022-01-11 00:43:41,275 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2087 transitions. Word has length 65 [2022-01-11 00:43:41,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:43:41,275 INFO L470 AbstractCegarLoop]: Abstraction has 1580 states and 2087 transitions. [2022-01-11 00:43:41,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-01-11 00:43:41,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2087 transitions. [2022-01-11 00:43:41,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 00:43:41,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:43:41,278 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] [2022-01-11 00:43:41,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:43:41,278 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 00:43:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:43:41,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1200020425, now seen corresponding path program 1 times [2022-01-11 00:43:41,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:43:41,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503345777] [2022-01-11 00:43:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:43:41,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:43:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:43:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:43:41,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:43:41,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503345777] [2022-01-11 00:43:41,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503345777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:43:41,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:43:41,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:43:41,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936319386] [2022-01-11 00:43:41,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:43:41,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:43:41,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:43:41,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:43:41,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:43:41,736 INFO L87 Difference]: Start difference. First operand 1580 states and 2087 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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) [2022-01-11 00:43:46,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:43:49,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:43:50,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:43:50,431 INFO L93 Difference]: Finished difference Result 2347 states and 3220 transitions. [2022-01-11 00:43:50,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:43:50,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 [2022-01-11 00:43:50,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:43:50,436 INFO L225 Difference]: With dead ends: 2347 [2022-01-11 00:43:50,436 INFO L226 Difference]: Without dead ends: 1677 [2022-01-11 00:43:50,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-11 00:43:50,438 INFO L933 BasicCegarLoop]: 1345 mSDtfsCounter, 2164 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:43:50,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 3747 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 956 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-01-11 00:43:50,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2022-01-11 00:43:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1520. [2022-01-11 00:43:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1513 states have (on average 1.3278255122273628) internal successors, (2009), 1519 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:43:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2009 transitions. [2022-01-11 00:43:50,553 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2009 transitions. Word has length 65 [2022-01-11 00:43:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:43:50,554 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 2009 transitions. [2022-01-11 00:43:50,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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) [2022-01-11 00:43:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2009 transitions. [2022-01-11 00:43:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 00:43:50,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:43:50,556 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] [2022-01-11 00:43:50,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:43:50,556 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 00:43:50,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:43:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash -805318898, now seen corresponding path program 1 times [2022-01-11 00:43:50,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:43:50,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223052229] [2022-01-11 00:43:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:43:50,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:43:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:43:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:43:50,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:43:50,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223052229] [2022-01-11 00:43:50,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223052229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:43:50,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:43:50,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:43:50,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309141178] [2022-01-11 00:43:50,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:43:50,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:43:50,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:43:50,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:43:50,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:43:50,674 INFO L87 Difference]: Start difference. First operand 1520 states and 2009 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-01-11 00:43:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:43:50,902 INFO L93 Difference]: Finished difference Result 2414 states and 3345 transitions. [2022-01-11 00:43:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:43:50,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 [2022-01-11 00:43:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:43:50,908 INFO L225 Difference]: With dead ends: 2414 [2022-01-11 00:43:50,908 INFO L226 Difference]: Without dead ends: 1925 [2022-01-11 00:43:50,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:43:50,912 INFO L933 BasicCegarLoop]: 1332 mSDtfsCounter, 659 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:43:50,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 2115 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:43:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2022-01-11 00:43:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1917. [2022-01-11 00:43:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1910 states have (on average 1.3575916230366492) internal successors, (2593), 1916 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:43:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2593 transitions. [2022-01-11 00:43:51,114 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2593 transitions. Word has length 65 [2022-01-11 00:43:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:43:51,115 INFO L470 AbstractCegarLoop]: Abstraction has 1917 states and 2593 transitions. [2022-01-11 00:43:51,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-01-11 00:43:51,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2593 transitions. [2022-01-11 00:43:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 00:43:51,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:43:51,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:43:51,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:43:51,118 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 00:43:51,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:43:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1039756720, now seen corresponding path program 1 times [2022-01-11 00:43:51,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:43:51,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801474664] [2022-01-11 00:43:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:43:51,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:43:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:43:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:43:51,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:43:51,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801474664] [2022-01-11 00:43:51,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801474664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:43:51,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:43:51,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:43:51,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135462116] [2022-01-11 00:43:51,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:43:51,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:43:51,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:43:51,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:43:51,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:43:51,570 INFO L87 Difference]: Start difference. First operand 1917 states and 2593 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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) [2022-01-11 00:43:56,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:44:03,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:44:06,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:44:09,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:44:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:10,021 INFO L93 Difference]: Finished difference Result 7359 states and 10732 transitions. [2022-01-11 00:44:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 00:44:10,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 [2022-01-11 00:44:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:10,038 INFO L225 Difference]: With dead ends: 7359 [2022-01-11 00:44:10,038 INFO L226 Difference]: Without dead ends: 6352 [2022-01-11 00:44:10,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-11 00:44:10,041 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 5581 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 62 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5581 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:10,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5581 Valid, 2995 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1646 Invalid, 4 Unknown, 0 Unchecked, 16.3s Time] [2022-01-11 00:44:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2022-01-11 00:44:10,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 3518. [2022-01-11 00:44:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 3511 states have (on average 1.4001708914839077) internal successors, (4916), 3517 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:44:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 4916 transitions. [2022-01-11 00:44:10,749 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 4916 transitions. Word has length 65 [2022-01-11 00:44:10,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:10,750 INFO L470 AbstractCegarLoop]: Abstraction has 3518 states and 4916 transitions. [2022-01-11 00:44:10,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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) [2022-01-11 00:44:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 4916 transitions. [2022-01-11 00:44:10,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 00:44:10,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:10,753 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] [2022-01-11 00:44:10,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:44:10,754 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 00:44:10,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1230349230, now seen corresponding path program 1 times [2022-01-11 00:44:10,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:10,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935116337] [2022-01-11 00:44:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:10,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:44:10,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:10,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935116337] [2022-01-11 00:44:10,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935116337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:10,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:10,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:44:10,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794783382] [2022-01-11 00:44:10,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:10,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:44:10,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:10,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:44:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:44:10,891 INFO L87 Difference]: Start difference. First operand 3518 states and 4916 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-01-11 00:44:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:12,195 INFO L93 Difference]: Finished difference Result 7530 states and 10747 transitions. [2022-01-11 00:44:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:44:12,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 [2022-01-11 00:44:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:12,209 INFO L225 Difference]: With dead ends: 7530 [2022-01-11 00:44:12,209 INFO L226 Difference]: Without dead ends: 5538 [2022-01-11 00:44:12,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:44:12,212 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 599 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:12,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 2118 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:44:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2022-01-11 00:44:13,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 5491. [2022-01-11 00:44:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5491 states, 5484 states have (on average 1.4062727935813275) internal successors, (7712), 5490 states have internal predecessors, (7712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:44:13,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 7712 transitions. [2022-01-11 00:44:13,395 INFO L78 Accepts]: Start accepts. Automaton has 5491 states and 7712 transitions. Word has length 65 [2022-01-11 00:44:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:13,395 INFO L470 AbstractCegarLoop]: Abstraction has 5491 states and 7712 transitions. [2022-01-11 00:44:13,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-01-11 00:44:13,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5491 states and 7712 transitions. [2022-01-11 00:44:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 00:44:13,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:13,401 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] [2022-01-11 00:44:13,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:44:13,401 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 00:44:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash -574751337, now seen corresponding path program 1 times [2022-01-11 00:44:13,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:13,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317133337] [2022-01-11 00:44:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:13,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:44:13,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:13,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317133337] [2022-01-11 00:44:13,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317133337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:13,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:13,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:44:13,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660238376] [2022-01-11 00:44:13,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:13,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:44:13,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:44:13,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:44:13,529 INFO L87 Difference]: Start difference. First operand 5491 states and 7712 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-01-11 00:44:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:44:15,652 INFO L93 Difference]: Finished difference Result 11926 states and 17095 transitions. [2022-01-11 00:44:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:44:15,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 [2022-01-11 00:44:15,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:44:15,673 INFO L225 Difference]: With dead ends: 11926 [2022-01-11 00:44:15,673 INFO L226 Difference]: Without dead ends: 8696 [2022-01-11 00:44:15,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:44:15,679 INFO L933 BasicCegarLoop]: 1316 mSDtfsCounter, 553 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:44:15,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 2180 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:44:15,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8696 states. [2022-01-11 00:44:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8696 to 8145. [2022-01-11 00:44:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8145 states, 8138 states have (on average 1.4114032931924305) internal successors, (11486), 8144 states have internal predecessors, (11486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:44:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8145 states to 8145 states and 11486 transitions. [2022-01-11 00:44:17,526 INFO L78 Accepts]: Start accepts. Automaton has 8145 states and 11486 transitions. Word has length 65 [2022-01-11 00:44:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:44:17,526 INFO L470 AbstractCegarLoop]: Abstraction has 8145 states and 11486 transitions. [2022-01-11 00:44:17,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-01-11 00:44:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8145 states and 11486 transitions. [2022-01-11 00:44:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 00:44:17,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:44:17,533 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] [2022-01-11 00:44:17,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:44:17,533 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 00:44:17,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:44:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash -367258309, now seen corresponding path program 1 times [2022-01-11 00:44:17,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:44:17,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836207139] [2022-01-11 00:44:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:44:17,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:44:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:44:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:44:17,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:44:17,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836207139] [2022-01-11 00:44:17,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836207139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:44:17,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:44:17,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:44:17,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995305544] [2022-01-11 00:44:17,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:44:17,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:44:17,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:44:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:44:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:44:17,943 INFO L87 Difference]: Start difference. First operand 8145 states and 11486 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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) [2022-01-11 00:44:25,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:44:27,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []