/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_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:05:16,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:05:16,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:05:16,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:05:16,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:05:16,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:05:16,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:05:16,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:05:16,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:05:16,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:05:16,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:05:16,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:05:16,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:05:16,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:05:16,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:05:16,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:05:16,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:05:16,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:05:16,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:05:16,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:05:16,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:05:16,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:05:16,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:05:16,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:05:16,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:05:16,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 19:05:16,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 19:05:16,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 19:05:16,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 19:05:16,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 19:05:16,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 19:05:16,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 19:05:16,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 19:05:16,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:05:16,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:05:16,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:05:16,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:05:16,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:05:16,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:05:16,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:05:16,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:05:16,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:05:16,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:05:16,712 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:05:16,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:05:16,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:05:16,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:05:16,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:05:16,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:05:16,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:05:16,713 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:05:16,713 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:05:16,713 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:05:16,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:05:16,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:05:16,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:05:16,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:05:16,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:05:16,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:05:16,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:05:16,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:05:16,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:05:16,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:05:16,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:05:16,714 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:05:16,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:05:16,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:05:16,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:05:16,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:05:16,715 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:05:16,715 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:05:16,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:05:16,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:05:16,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:05:16,894 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:05:16,905 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:05:16,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 19:05:16,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c20b13c82/5402e04e111b4c39bdcd92d1ead1b1c7/FLAG076dfb2b7 [2022-01-10 19:05:17,368 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:05:17,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 19:05:17,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c20b13c82/5402e04e111b4c39bdcd92d1ead1b1c7/FLAG076dfb2b7 [2022-01-10 19:05:17,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c20b13c82/5402e04e111b4c39bdcd92d1ead1b1c7 [2022-01-10 19:05:17,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:05:17,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:05:17,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:05:17,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:05:17,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:05:17,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:17,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a6ab50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17, skipping insertion in model container [2022-01-10 19:05:17,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:17,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:05:17,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:05:17,725 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.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10378,10391] [2022-01-10 19:05:17,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:05:17,804 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:05:17,860 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.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10378,10391] [2022-01-10 19:05:17,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:05:17,912 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:05:17,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17 WrapperNode [2022-01-10 19:05:17,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:05:17,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:05:17,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:05:17,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:05:17,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:17,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:17,978 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 809 [2022-01-10 19:05:17,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:05:17,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:05:17,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:05:17,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:05:17,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:17,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:17,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:17,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:18,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:18,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:18,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:18,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:05:18,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:05:18,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:05:18,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:05:18,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (1/1) ... [2022-01-10 19:05:18,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:05:18,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:05:18,059 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 19:05:18,060 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 19:05:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:05:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:05:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:05:18,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:05:18,209 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:05:18,210 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:05:18,759 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:05:18,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:05:18,767 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:05:18,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:05:18 BoogieIcfgContainer [2022-01-10 19:05:18,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:05:18,769 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:05:18,769 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:05:18,772 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:05:18,774 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:05:18" (1/1) ... [2022-01-10 19:05:19,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:05:19 BasicIcfg [2022-01-10 19:05:19,256 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:05:19,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:05:19,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:05:19,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:05:19,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:05:17" (1/4) ... [2022-01-10 19:05:19,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d3f1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:05:19, skipping insertion in model container [2022-01-10 19:05:19,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:05:17" (2/4) ... [2022-01-10 19:05:19,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d3f1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:05:19, skipping insertion in model container [2022-01-10 19:05:19,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:05:18" (3/4) ... [2022-01-10 19:05:19,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d3f1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:05:19, skipping insertion in model container [2022-01-10 19:05:19,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:05:19" (4/4) ... [2022-01-10 19:05:19,262 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 19:05:19,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:05:19,265 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:05:19,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:05:19,309 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 19:05:19,310 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:05:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 19:05:19,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:05:19,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:05:19,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:05:19,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:05:19,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1095767728, now seen corresponding path program 1 times [2022-01-10 19:05:19,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:05:19,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105094398] [2022-01-10 19:05:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:05:19,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:05:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:05:19,945 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 19:05:19,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:05:19,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105094398] [2022-01-10 19:05:19,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105094398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:05:19,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:05:19,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:05:19,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869599102] [2022-01-10 19:05:19,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:05:19,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:05:19,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:05:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:05:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:05:19,976 INFO L87 Difference]: Start difference. First operand has 201 states, 199 states have (on average 1.763819095477387) internal successors, (351), 200 states have internal predecessors, (351), 0 states have call successors, (0), 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 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:22,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:05:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:05:22,483 INFO L93 Difference]: Finished difference Result 391 states and 653 transitions. [2022-01-10 19:05:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:05:22,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 19:05:22,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:05:22,496 INFO L225 Difference]: With dead ends: 391 [2022-01-10 19:05:22,497 INFO L226 Difference]: Without dead ends: 301 [2022-01-10 19:05:22,498 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 [2022-01-10 19:05:22,500 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 153 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 19:05:22,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 739 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 19:05:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-01-10 19:05:22,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2022-01-10 19:05:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4463087248322148) internal successors, (431), 298 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 431 transitions. [2022-01-10 19:05:22,583 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 431 transitions. Word has length 107 [2022-01-10 19:05:22,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:05:22,583 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 431 transitions. [2022-01-10 19:05:22,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 431 transitions. [2022-01-10 19:05:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 19:05:22,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:05:22,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:05:22,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:05:22,585 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:05:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:05:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1717583791, now seen corresponding path program 1 times [2022-01-10 19:05:22,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:05:22,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790932796] [2022-01-10 19:05:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:05:22,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:05:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:05:23,208 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 19:05:23,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:05:23,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790932796] [2022-01-10 19:05:23,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790932796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:05:23,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:05:23,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:05:23,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141474294] [2022-01-10 19:05:23,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:05:23,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:05:23,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:05:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:05:23,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:05:23,210 INFO L87 Difference]: Start difference. First operand 299 states and 431 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:25,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:05:28,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:05:31,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:05:33,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:05:35,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:05:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:05:36,192 INFO L93 Difference]: Finished difference Result 879 states and 1329 transitions. [2022-01-10 19:05:36,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 19:05:36,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-10 19:05:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:05:36,200 INFO L225 Difference]: With dead ends: 879 [2022-01-10 19:05:36,200 INFO L226 Difference]: Without dead ends: 640 [2022-01-10 19:05:36,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-10 19:05:36,203 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 710 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-01-10 19:05:36,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 1403 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 707 Invalid, 5 Unknown, 0 Unchecked, 12.6s Time] [2022-01-10 19:05:36,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-01-10 19:05:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 454. [2022-01-10 19:05:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.490066225165563) internal successors, (675), 453 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 675 transitions. [2022-01-10 19:05:36,277 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 675 transitions. Word has length 109 [2022-01-10 19:05:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:05:36,278 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 675 transitions. [2022-01-10 19:05:36,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 675 transitions. [2022-01-10 19:05:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:05:36,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:05:36,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:05:36,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:05:36,279 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:05:36,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:05:36,280 INFO L85 PathProgramCache]: Analyzing trace with hash 910655296, now seen corresponding path program 1 times [2022-01-10 19:05:36,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:05:36,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770981696] [2022-01-10 19:05:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:05:36,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:05:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:05:36,829 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 19:05:36,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:05:36,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770981696] [2022-01-10 19:05:36,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770981696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:05:36,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:05:36,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:05:36,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137677419] [2022-01-10 19:05:36,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:05:36,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:05:36,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:05:36,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:05:36,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:05:36,830 INFO L87 Difference]: Start difference. First operand 454 states and 675 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:05:42,231 INFO L93 Difference]: Finished difference Result 3194 states and 4998 transitions. [2022-01-10 19:05:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:05:42,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 19:05:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:05:42,240 INFO L225 Difference]: With dead ends: 3194 [2022-01-10 19:05:42,240 INFO L226 Difference]: Without dead ends: 2807 [2022-01-10 19:05:42,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 19:05:42,242 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 1804 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:05:42,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1804 Valid, 1812 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 19:05:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2022-01-10 19:05:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 1188. [2022-01-10 19:05:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1187 states have (on average 1.5374894692502106) internal successors, (1825), 1187 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1825 transitions. [2022-01-10 19:05:42,598 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1825 transitions. Word has length 110 [2022-01-10 19:05:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:05:42,599 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 1825 transitions. [2022-01-10 19:05:42,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1825 transitions. [2022-01-10 19:05:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:05:42,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:05:42,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:05:42,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:05:42,605 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:05:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:05:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash -216123199, now seen corresponding path program 1 times [2022-01-10 19:05:42,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:05:42,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901412913] [2022-01-10 19:05:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:05:42,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:05:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:05:43,068 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 19:05:43,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:05:43,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901412913] [2022-01-10 19:05:43,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901412913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:05:43,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:05:43,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:05:43,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004361369] [2022-01-10 19:05:43,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:05:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:05:43,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:05:43,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:05:43,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:05:43,070 INFO L87 Difference]: Start difference. First operand 1188 states and 1825 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:46,799 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 [] [2022-01-10 19:05:51,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:05:51,351 INFO L93 Difference]: Finished difference Result 6610 states and 10407 transitions. [2022-01-10 19:05:51,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:05:51,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 19:05:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:05:51,367 INFO L225 Difference]: With dead ends: 6610 [2022-01-10 19:05:51,367 INFO L226 Difference]: Without dead ends: 5572 [2022-01-10 19:05:51,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 19:05:51,376 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 2830 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2830 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-01-10 19:05:51,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2830 Valid, 1127 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 821 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-01-10 19:05:51,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5572 states. [2022-01-10 19:05:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5572 to 2067. [2022-01-10 19:05:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 2066 states have (on average 1.5619554695062923) internal successors, (3227), 2066 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3227 transitions. [2022-01-10 19:05:52,283 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3227 transitions. Word has length 110 [2022-01-10 19:05:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:05:52,283 INFO L470 AbstractCegarLoop]: Abstraction has 2067 states and 3227 transitions. [2022-01-10 19:05:52,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:52,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3227 transitions. [2022-01-10 19:05:52,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 19:05:52,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:05:52,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:05:52,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:05:52,285 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:05:52,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:05:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash -998403152, now seen corresponding path program 1 times [2022-01-10 19:05:52,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:05:52,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005998895] [2022-01-10 19:05:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:05:52,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:05:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:05:52,748 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 19:05:52,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:05:52,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005998895] [2022-01-10 19:05:52,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005998895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:05:52,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:05:52,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:05:52,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040507091] [2022-01-10 19:05:52,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:05:52,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:05:52,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:05:52,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:05:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:05:52,750 INFO L87 Difference]: Start difference. First operand 2067 states and 3227 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:05:57,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:00,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:02,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:04,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:06:12,404 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 [] [2022-01-10 19:06:15,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:06:15,312 INFO L93 Difference]: Finished difference Result 11541 states and 18213 transitions. [2022-01-10 19:06:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:06:15,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 19:06:15,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:06:15,341 INFO L225 Difference]: With dead ends: 11541 [2022-01-10 19:06:15,343 INFO L226 Difference]: Without dead ends: 9722 [2022-01-10 19:06:15,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 19:06:15,348 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 1563 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 21 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-01-10 19:06:15,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1563 Valid, 2355 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1234 Invalid, 5 Unknown, 0 Unchecked, 17.4s Time] [2022-01-10 19:06:15,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9722 states. [2022-01-10 19:06:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9722 to 5451. [2022-01-10 19:06:18,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5451 states, 5450 states have (on average 1.5675229357798166) internal successors, (8543), 5450 states have internal predecessors, (8543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:06:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5451 states to 5451 states and 8543 transitions. [2022-01-10 19:06:18,129 INFO L78 Accepts]: Start accepts. Automaton has 5451 states and 8543 transitions. Word has length 111 [2022-01-10 19:06:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:06:18,129 INFO L470 AbstractCegarLoop]: Abstraction has 5451 states and 8543 transitions. [2022-01-10 19:06:18,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:06:18,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5451 states and 8543 transitions. [2022-01-10 19:06:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 19:06:18,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:06:18,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:06:18,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:06:18,134 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:06:18,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:06:18,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1095280750, now seen corresponding path program 1 times [2022-01-10 19:06:18,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:06:18,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713612531] [2022-01-10 19:06:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:06:18,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:06:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:06:18,574 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 19:06:18,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:06:18,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713612531] [2022-01-10 19:06:18,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713612531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:06:18,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:06:18,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:06:18,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734685216] [2022-01-10 19:06:18,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:06:18,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:06:18,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:06:18,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:06:18,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:06:18,576 INFO L87 Difference]: Start difference. First operand 5451 states and 8543 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:06:21,413 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 [] [2022-01-10 19:06:29,551 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 []