/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.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:46:56,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:46:56,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:46:56,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:46:56,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:46:56,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:46:56,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:46:56,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:46:56,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:46:56,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:46:56,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:46:56,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:46:56,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:46:56,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:46:56,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:46:56,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:46:56,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:46:56,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:46:56,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:46:56,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:46:56,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:46:56,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:46:56,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:46:56,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:46:56,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:46:56,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:46:56,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:46:56,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:46:56,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:46:56,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:46:56,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:46:56,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:46:56,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:46:56,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:46:56,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:46:56,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:46:56,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:46:56,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:46:56,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:46:56,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:46:56,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:46:56,698 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 00:46:56,711 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:46:56,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:46:56,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:46:56,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:46:56,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:46:56,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:46:56,712 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:46:56,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:46:56,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:46:56,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:46:56,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:46:56,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:46:56,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:46:56,713 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:46:56,713 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:46:56,713 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:46:56,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:46:56,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:46:56,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:46:56,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:46:56,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:46:56,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:46:56,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:46:56,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:46:56,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:46:56,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:46:56,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:46:56,714 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:46:56,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:46:56,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:46:56,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:46:56,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:46:56,715 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:46:56,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:46:56,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:46:56,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:46:56,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:46:56,865 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:46:56,865 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:46:56,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-11 00:46:56,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af50f0a4a/6cc02126cd034a75b92906c689bf6748/FLAG79d13ffe1 [2022-01-11 00:46:57,279 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:46:57,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-11 00:46:57,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af50f0a4a/6cc02126cd034a75b92906c689bf6748/FLAG79d13ffe1 [2022-01-11 00:46:57,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af50f0a4a/6cc02126cd034a75b92906c689bf6748 [2022-01-11 00:46:57,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:46:57,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:46:57,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:46:57,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:46:57,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:46:57,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48dd942a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57, skipping insertion in model container [2022-01-11 00:46:57,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:46:57,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:46:57,487 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.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8607,8620] [2022-01-11 00:46:57,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:46:57,527 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:46:57,556 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.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8607,8620] [2022-01-11 00:46:57,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:46:57,595 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:46:57,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57 WrapperNode [2022-01-11 00:46:57,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:46:57,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:46:57,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:46:57,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:46:57,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,650 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 787 [2022-01-11 00:46:57,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:46:57,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:46:57,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:46:57,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:46:57,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:46:57,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:46:57,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:46:57,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:46:57,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (1/1) ... [2022-01-11 00:46:57,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:46:57,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:46:57,708 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 00:46:57,725 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 00:46:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:46:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:46:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:46:57,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:46:57,854 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:46:57,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:46:58,446 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:46:58,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:46:58,452 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:46:58,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:46:58 BoogieIcfgContainer [2022-01-11 00:46:58,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:46:58,454 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:46:58,454 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:46:58,456 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:46:58,458 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:46:58" (1/1) ... [2022-01-11 00:46:58,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:46:58 BasicIcfg [2022-01-11 00:46:58,922 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:46:58,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:46:58,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:46:58,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:46:58,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:46:57" (1/4) ... [2022-01-11 00:46:58,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb5193e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:46:58, skipping insertion in model container [2022-01-11 00:46:58,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:46:57" (2/4) ... [2022-01-11 00:46:58,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb5193e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:46:58, skipping insertion in model container [2022-01-11 00:46:58,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:46:58" (3/4) ... [2022-01-11 00:46:58,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb5193e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:46:58, skipping insertion in model container [2022-01-11 00:46:58,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:46:58" (4/4) ... [2022-01-11 00:46:58,928 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 00:46:58,932 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:46:58,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:46:58,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:46:58,977 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 00:46:58,977 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:46:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 214 states have (on average 1.719626168224299) internal successors, (368), 215 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 00:46:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 00:46:58,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:46:58,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:58,998 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:46:59,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:46:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1247106835, now seen corresponding path program 1 times [2022-01-11 00:46:59,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:46:59,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253538925] [2022-01-11 00:46:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:46:59,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:46:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:46:59,448 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 00:46:59,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:46:59,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253538925] [2022-01-11 00:46:59,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253538925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:46:59,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:46:59,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:46:59,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350331603] [2022-01-11 00:46:59,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:46:59,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:46:59,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:46:59,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:46:59,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:46:59,481 INFO L87 Difference]: Start difference. First operand has 216 states, 214 states have (on average 1.719626168224299) internal successors, (368), 215 states have internal predecessors, (368), 0 states have call successors, (0), 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 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 00:47:00,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:00,038 INFO L93 Difference]: Finished difference Result 437 states and 720 transitions. [2022-01-11 00:47:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:47:00,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-11 00:47:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:00,048 INFO L225 Difference]: With dead ends: 437 [2022-01-11 00:47:00,048 INFO L226 Difference]: Without dead ends: 329 [2022-01-11 00:47:00,051 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 00:47:00,053 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 180 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 00:47:00,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 689 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 00:47:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-01-11 00:47:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2022-01-11 00:47:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.5) internal successors, (489), 326 states have internal predecessors, (489), 0 states have call successors, (0), 0 states 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 00:47:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 489 transitions. [2022-01-11 00:47:00,132 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 489 transitions. Word has length 81 [2022-01-11 00:47:00,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:00,133 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 489 transitions. [2022-01-11 00:47:00,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 00:47:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 489 transitions. [2022-01-11 00:47:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:47:00,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:00,139 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] [2022-01-11 00:47:00,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:47:00,140 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:00,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:00,141 INFO L85 PathProgramCache]: Analyzing trace with hash 4620345, now seen corresponding path program 1 times [2022-01-11 00:47:00,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:00,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964539257] [2022-01-11 00:47:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:00,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:00,423 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 00:47:00,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:00,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964539257] [2022-01-11 00:47:00,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964539257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:00,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:00,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:47:00,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160710244] [2022-01-11 00:47:00,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:00,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:47:00,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:00,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:47:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:47:00,425 INFO L87 Difference]: Start difference. First operand 327 states and 489 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 00:47:00,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:00,519 INFO L93 Difference]: Finished difference Result 543 states and 829 transitions. [2022-01-11 00:47:00,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:47:00,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-11 00:47:00,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:00,523 INFO L225 Difference]: With dead ends: 543 [2022-01-11 00:47:00,523 INFO L226 Difference]: Without dead ends: 541 [2022-01-11 00:47:00,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:47:00,527 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 449 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:47:00,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 858 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:47:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-11 00:47:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 329. [2022-01-11 00:47:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.4969512195121952) internal successors, (491), 328 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 00:47:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 491 transitions. [2022-01-11 00:47:00,566 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 491 transitions. Word has length 82 [2022-01-11 00:47:00,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:00,567 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 491 transitions. [2022-01-11 00:47:00,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 00:47:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 491 transitions. [2022-01-11 00:47:00,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:47:00,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:00,568 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] [2022-01-11 00:47:00,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:47:00,568 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:00,568 INFO L85 PathProgramCache]: Analyzing trace with hash 144240816, now seen corresponding path program 1 times [2022-01-11 00:47:00,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:00,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45367537] [2022-01-11 00:47:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:00,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:00,796 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 00:47:00,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:00,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45367537] [2022-01-11 00:47:00,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45367537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:00,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:00,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:47:00,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512533533] [2022-01-11 00:47:00,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:00,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:47:00,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:00,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:47:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:47:00,798 INFO L87 Difference]: Start difference. First operand 329 states and 491 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:47:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:01,792 INFO L93 Difference]: Finished difference Result 2604 states and 4061 transitions. [2022-01-11 00:47:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 00:47:01,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 00:47:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:01,800 INFO L225 Difference]: With dead ends: 2604 [2022-01-11 00:47:01,800 INFO L226 Difference]: Without dead ends: 2356 [2022-01-11 00:47:01,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-11 00:47:01,802 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 2293 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 00:47:01,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2293 Valid, 3138 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 00:47:01,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2022-01-11 00:47:01,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1283. [2022-01-11 00:47:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.547581903276131) internal successors, (1984), 1282 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 00:47:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1984 transitions. [2022-01-11 00:47:01,995 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1984 transitions. Word has length 83 [2022-01-11 00:47:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:01,995 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1984 transitions. [2022-01-11 00:47:01,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:47:01,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1984 transitions. [2022-01-11 00:47:01,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 00:47:01,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:01,996 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] [2022-01-11 00:47:01,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:47:01,997 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:01,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:01,997 INFO L85 PathProgramCache]: Analyzing trace with hash 162355901, now seen corresponding path program 1 times [2022-01-11 00:47:01,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:01,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128342401] [2022-01-11 00:47:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:01,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:02,313 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 00:47:02,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:02,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128342401] [2022-01-11 00:47:02,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128342401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:02,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:02,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:47:02,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324631004] [2022-01-11 00:47:02,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:02,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:47:02,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:02,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:47:02,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:47:02,315 INFO L87 Difference]: Start difference. First operand 1283 states and 1984 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 00:47:04,336 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 00:47:06,546 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 00:47:06,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:06,969 INFO L93 Difference]: Finished difference Result 2966 states and 4633 transitions. [2022-01-11 00:47:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:47:06,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-11 00:47:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:06,976 INFO L225 Difference]: With dead ends: 2966 [2022-01-11 00:47:06,976 INFO L226 Difference]: Without dead ends: 2092 [2022-01-11 00:47:06,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:47:06,978 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 322 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:47:06,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 727 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-11 00:47:06,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2022-01-11 00:47:07,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2090. [2022-01-11 00:47:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2089 states have (on average 1.5533748204882718) internal successors, (3245), 2089 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states 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 00:47:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3245 transitions. [2022-01-11 00:47:07,311 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3245 transitions. Word has length 84 [2022-01-11 00:47:07,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:07,312 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3245 transitions. [2022-01-11 00:47:07,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 00:47:07,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3245 transitions. [2022-01-11 00:47:07,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:47:07,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:07,313 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] [2022-01-11 00:47:07,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:47:07,313 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:07,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1277112278, now seen corresponding path program 1 times [2022-01-11 00:47:07,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:07,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402191234] [2022-01-11 00:47:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:07,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:07,437 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 00:47:07,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:07,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402191234] [2022-01-11 00:47:07,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402191234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:07,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:07,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:47:07,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635381427] [2022-01-11 00:47:07,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:07,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:47:07,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:47:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:47:07,440 INFO L87 Difference]: Start difference. First operand 2090 states and 3245 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:47:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:07,885 INFO L93 Difference]: Finished difference Result 3876 states and 6049 transitions. [2022-01-11 00:47:07,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:47:07,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 00:47:07,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:07,893 INFO L225 Difference]: With dead ends: 3876 [2022-01-11 00:47:07,893 INFO L226 Difference]: Without dead ends: 2366 [2022-01-11 00:47:07,894 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 00:47:07,895 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 222 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 586 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 00:47:07,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 586 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:47:07,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-01-11 00:47:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2364. [2022-01-11 00:47:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2363 states have (on average 1.5382987727465087) internal successors, (3635), 2363 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states 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 00:47:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 3635 transitions. [2022-01-11 00:47:08,305 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 3635 transitions. Word has length 85 [2022-01-11 00:47:08,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:08,305 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 3635 transitions. [2022-01-11 00:47:08,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:47:08,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 3635 transitions. [2022-01-11 00:47:08,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:47:08,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:08,307 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] [2022-01-11 00:47:08,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:47:08,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:08,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:08,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1425651183, now seen corresponding path program 1 times [2022-01-11 00:47:08,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:08,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296059909] [2022-01-11 00:47:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:08,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:47:08,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:08,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296059909] [2022-01-11 00:47:08,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296059909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:08,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:08,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:47:08,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637187041] [2022-01-11 00:47:08,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:08,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:47:08,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:08,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:47:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:47:08,582 INFO L87 Difference]: Start difference. First operand 2364 states and 3635 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:47:11,021 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 00:47:13,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:47:16,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:47:18,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:47:20,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:47:26,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:47:28,470 WARN L534 Checker$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 00:47:30,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:47:31,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:31,743 INFO L93 Difference]: Finished difference Result 16274 states and 25229 transitions. [2022-01-11 00:47:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:47:31,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 00:47:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:31,781 INFO L225 Difference]: With dead ends: 16274 [2022-01-11 00:47:31,781 INFO L226 Difference]: Without dead ends: 14004 [2022-01-11 00:47:31,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 00:47:31,786 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 1071 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 16 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-01-11 00:47:31,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 1502 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1062 Invalid, 8 Unknown, 0 Unchecked, 19.8s Time] [2022-01-11 00:47:31,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14004 states. [2022-01-11 00:47:33,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14004 to 8182. [2022-01-11 00:47:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8182 states, 8181 states have (on average 1.539053905390539) internal successors, (12591), 8181 states have internal predecessors, (12591), 0 states have call successors, (0), 0 states 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 00:47:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8182 states to 8182 states and 12591 transitions. [2022-01-11 00:47:33,986 INFO L78 Accepts]: Start accepts. Automaton has 8182 states and 12591 transitions. Word has length 85 [2022-01-11 00:47:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:33,986 INFO L470 AbstractCegarLoop]: Abstraction has 8182 states and 12591 transitions. [2022-01-11 00:47:33,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:47:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 8182 states and 12591 transitions. [2022-01-11 00:47:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:47:33,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:33,988 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] [2022-01-11 00:47:33,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:47:33,988 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:33,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1116262838, now seen corresponding path program 1 times [2022-01-11 00:47:33,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:33,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909026594] [2022-01-11 00:47:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:33,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:34,104 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 00:47:34,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:34,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909026594] [2022-01-11 00:47:34,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909026594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:34,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:34,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:47:34,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465314381] [2022-01-11 00:47:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:34,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:47:34,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:47:34,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:47:34,106 INFO L87 Difference]: Start difference. First operand 8182 states and 12591 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:47:37,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:37,820 INFO L93 Difference]: Finished difference Result 21668 states and 33345 transitions. [2022-01-11 00:47:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:47:37,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 00:47:37,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:37,853 INFO L225 Difference]: With dead ends: 21668 [2022-01-11 00:47:37,854 INFO L226 Difference]: Without dead ends: 13972 [2022-01-11 00:47:37,863 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 00:47:37,864 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 197 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 577 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 00:47:37,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 577 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:47:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13972 states. [2022-01-11 00:47:41,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13972 to 13937. [2022-01-11 00:47:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13936 states have (on average 1.520235361653272) internal successors, (21186), 13936 states have internal predecessors, (21186), 0 states have call successors, (0), 0 states 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 00:47:41,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 21186 transitions. [2022-01-11 00:47:41,793 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 21186 transitions. Word has length 85 [2022-01-11 00:47:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:41,793 INFO L470 AbstractCegarLoop]: Abstraction has 13937 states and 21186 transitions. [2022-01-11 00:47:41,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:47:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 21186 transitions. [2022-01-11 00:47:41,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:47:41,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:41,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:41,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:47:41,797 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:41,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:41,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1331144434, now seen corresponding path program 1 times [2022-01-11 00:47:41,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:41,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920702209] [2022-01-11 00:47:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:41,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:41,879 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 00:47:41,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:41,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920702209] [2022-01-11 00:47:41,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920702209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:41,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:41,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:47:41,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559189658] [2022-01-11 00:47:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:41,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:47:41,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:41,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:47:41,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:47:41,881 INFO L87 Difference]: Start difference. First operand 13937 states and 21186 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:47:48,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:47:48,633 INFO L93 Difference]: Finished difference Result 38661 states and 58664 transitions. [2022-01-11 00:47:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:47:48,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 00:47:48,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:47:48,683 INFO L225 Difference]: With dead ends: 38661 [2022-01-11 00:47:48,684 INFO L226 Difference]: Without dead ends: 25677 [2022-01-11 00:47:48,699 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 00:47:48,700 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 184 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 576 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 00:47:48,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 576 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:47:48,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25677 states. [2022-01-11 00:47:55,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25677 to 25640. [2022-01-11 00:47:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25640 states, 25639 states have (on average 1.4980303443972074) internal successors, (38408), 25639 states have internal predecessors, (38408), 0 states have call successors, (0), 0 states 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 00:47:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25640 states to 25640 states and 38408 transitions. [2022-01-11 00:47:55,658 INFO L78 Accepts]: Start accepts. Automaton has 25640 states and 38408 transitions. Word has length 85 [2022-01-11 00:47:55,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:47:55,658 INFO L470 AbstractCegarLoop]: Abstraction has 25640 states and 38408 transitions. [2022-01-11 00:47:55,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:47:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 25640 states and 38408 transitions. [2022-01-11 00:47:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:47:55,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:47:55,665 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] [2022-01-11 00:47:55,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:47:55,665 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:47:55,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:47:55,665 INFO L85 PathProgramCache]: Analyzing trace with hash 354518166, now seen corresponding path program 1 times [2022-01-11 00:47:55,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:47:55,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34110283] [2022-01-11 00:47:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:47:55,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:47:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:47:55,772 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 00:47:55,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:47:55,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34110283] [2022-01-11 00:47:55,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34110283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:47:55,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:47:55,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:47:55,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66118112] [2022-01-11 00:47:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:47:55,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:47:55,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:47:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:47:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:47:55,774 INFO L87 Difference]: Start difference. First operand 25640 states and 38408 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:48:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:48:02,821 INFO L93 Difference]: Finished difference Result 35606 states and 53204 transitions. [2022-01-11 00:48:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:48:02,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 00:48:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:48:02,866 INFO L225 Difference]: With dead ends: 35606 [2022-01-11 00:48:02,866 INFO L226 Difference]: Without dead ends: 26612 [2022-01-11 00:48:02,880 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 00:48:02,881 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 175 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:48:02,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 579 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:48:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26612 states. [2022-01-11 00:48:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26612 to 26610. [2022-01-11 00:48:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26610 states, 26609 states have (on average 1.478071329249502) internal successors, (39330), 26609 states have internal predecessors, (39330), 0 states have call successors, (0), 0 states 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 00:48:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26610 states to 26610 states and 39330 transitions. [2022-01-11 00:48:10,080 INFO L78 Accepts]: Start accepts. Automaton has 26610 states and 39330 transitions. Word has length 85 [2022-01-11 00:48:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:48:10,080 INFO L470 AbstractCegarLoop]: Abstraction has 26610 states and 39330 transitions. [2022-01-11 00:48:10,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:48:10,081 INFO L276 IsEmpty]: Start isEmpty. Operand 26610 states and 39330 transitions. [2022-01-11 00:48:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:48:10,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:48:10,087 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] [2022-01-11 00:48:10,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:48:10,087 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:48:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:48:10,087 INFO L85 PathProgramCache]: Analyzing trace with hash -992925584, now seen corresponding path program 1 times [2022-01-11 00:48:10,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:48:10,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652049785] [2022-01-11 00:48:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:48:10,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:48:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:48:10,275 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 00:48:10,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:48:10,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652049785] [2022-01-11 00:48:10,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652049785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:48:10,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:48:10,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:48:10,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060585911] [2022-01-11 00:48:10,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:48:10,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:48:10,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:48:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:48:10,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:48:10,276 INFO L87 Difference]: Start difference. First operand 26610 states and 39330 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)