/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_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:40:25,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:40:25,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:40:25,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:40:25,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:40:25,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:40:25,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:40:25,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:40:25,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:40:25,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:40:25,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:40:25,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:40:25,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:40:25,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:40:25,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:40:25,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:40:25,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:40:25,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:40:25,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:40:25,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:40:25,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:40:25,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:40:25,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:40:25,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:40:25,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:40:25,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:40:25,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:40:25,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:40:25,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:40:25,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:40:25,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:40:25,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:40:25,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:40:25,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:40:25,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:40:25,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:40:25,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:40:25,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:40:25,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:40:25,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:40:25,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:40:25,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:40:25,702 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:40:25,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:40:25,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:40:25,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:40:25,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:40:25,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:40:25,706 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:40:25,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:40:25,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:40:25,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:40:25,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:40:25,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:40:25,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:40:25,707 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:40:25,707 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:40:25,707 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:40:25,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:40:25,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:40:25,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:40:25,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:40:25,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:40:25,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:40:25,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:40:25,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:40:25,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:40:25,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:40:25,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:40:25,709 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:40:25,709 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:40:25,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:40:25,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:40:25,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:40:25,711 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:40:25,711 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:40:25,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:40:25,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:40:25,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:40:25,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:40:25,926 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:40:25,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:40:25,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6169e900/227d6c8c564a4da2afbcd33262bd98fa/FLAGccc4e1942 [2022-01-11 06:40:26,391 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:40:26,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:40:26,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6169e900/227d6c8c564a4da2afbcd33262bd98fa/FLAGccc4e1942 [2022-01-11 06:40:26,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6169e900/227d6c8c564a4da2afbcd33262bd98fa [2022-01-11 06:40:26,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:40:26,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:40:26,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:40:26,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:40:26,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:40:26,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3055c4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26, skipping insertion in model container [2022-01-11 06:40:26,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:40:26,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:40:26,617 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.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5805,5818] [2022-01-11 06:40:26,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:40:26,647 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:40:26,671 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.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5805,5818] [2022-01-11 06:40:26,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:40:26,692 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:40:26,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26 WrapperNode [2022-01-11 06:40:26,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:40:26,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:40:26,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:40:26,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:40:26,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,720 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 398 [2022-01-11 06:40:26,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:40:26,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:40:26,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:40:26,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:40:26,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:40:26,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:40:26,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:40:26,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:40:26,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (1/1) ... [2022-01-11 06:40:26,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:40:26,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:40:26,764 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 06:40:26,802 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 06:40:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:40:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:40:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:40:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:40:26,892 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:40:26,893 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:40:27,271 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:40:27,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:40:27,278 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:40:27,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:40:27 BoogieIcfgContainer [2022-01-11 06:40:27,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:40:27,280 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:40:27,280 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:40:27,281 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:40:27,283 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:40:27" (1/1) ... [2022-01-11 06:40:27,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:40:27 BasicIcfg [2022-01-11 06:40:27,596 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:40:27,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:40:27,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:40:27,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:40:27,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:40:26" (1/4) ... [2022-01-11 06:40:27,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b98f933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:40:27, skipping insertion in model container [2022-01-11 06:40:27,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:26" (2/4) ... [2022-01-11 06:40:27,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b98f933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:40:27, skipping insertion in model container [2022-01-11 06:40:27,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:40:27" (3/4) ... [2022-01-11 06:40:27,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b98f933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:40:27, skipping insertion in model container [2022-01-11 06:40:27,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:40:27" (4/4) ... [2022-01-11 06:40:27,605 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:40:27,609 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:40:27,609 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:40:27,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:40:27,655 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 06:40:27,658 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:40:27,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 97 states have (on average 1.7216494845360826) internal successors, (167), 98 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 06:40:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 06:40:27,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:27,679 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] [2022-01-11 06:40:27,679 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:27,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:27,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1307175817, now seen corresponding path program 1 times [2022-01-11 06:40:27,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:27,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604354500] [2022-01-11 06:40:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:27,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:28,141 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 06:40:28,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:28,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604354500] [2022-01-11 06:40:28,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604354500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:28,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:28,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:40:28,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898076925] [2022-01-11 06:40:28,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:28,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:40:28,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:28,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:40:28,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:40:28,188 INFO L87 Difference]: Start difference. First operand has 99 states, 97 states have (on average 1.7216494845360826) internal successors, (167), 98 states have internal predecessors, (167), 0 states have call successors, (0), 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 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 06:40:28,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:28,257 INFO L93 Difference]: Finished difference Result 221 states and 356 transitions. [2022-01-11 06:40:28,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:40:28,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-11 06:40:28,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:28,271 INFO L225 Difference]: With dead ends: 221 [2022-01-11 06:40:28,271 INFO L226 Difference]: Without dead ends: 150 [2022-01-11 06:40:28,279 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 06:40:28,282 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 108 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:28,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 337 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:40:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-01-11 06:40:28,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2022-01-11 06:40:28,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.4625850340136055) internal successors, (215), 147 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 06:40:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 215 transitions. [2022-01-11 06:40:28,366 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 215 transitions. Word has length 60 [2022-01-11 06:40:28,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:28,366 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 215 transitions. [2022-01-11 06:40:28,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 06:40:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 215 transitions. [2022-01-11 06:40:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 06:40:28,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:28,368 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] [2022-01-11 06:40:28,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:40:28,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1153503069, now seen corresponding path program 1 times [2022-01-11 06:40:28,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:28,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113611540] [2022-01-11 06:40:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:28,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:40:28,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:28,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113611540] [2022-01-11 06:40:28,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113611540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:28,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:28,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:40:28,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960097334] [2022-01-11 06:40:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:28,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:40:28,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:40:28,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:40:28,547 INFO L87 Difference]: Start difference. First operand 148 states and 215 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 06:40:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:28,583 INFO L93 Difference]: Finished difference Result 360 states and 551 transitions. [2022-01-11 06:40:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:40:28,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-11 06:40:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:28,587 INFO L225 Difference]: With dead ends: 360 [2022-01-11 06:40:28,587 INFO L226 Difference]: Without dead ends: 246 [2022-01-11 06:40:28,589 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 06:40:28,590 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 78 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:28,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 287 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:40:28,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-01-11 06:40:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2022-01-11 06:40:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.5102880658436213) internal successors, (367), 243 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 06:40:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 367 transitions. [2022-01-11 06:40:28,614 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 367 transitions. Word has length 61 [2022-01-11 06:40:28,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:28,615 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 367 transitions. [2022-01-11 06:40:28,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 06:40:28,615 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 367 transitions. [2022-01-11 06:40:28,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 06:40:28,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:28,620 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] [2022-01-11 06:40:28,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:40:28,621 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:28,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:28,622 INFO L85 PathProgramCache]: Analyzing trace with hash 288660629, now seen corresponding path program 1 times [2022-01-11 06:40:28,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:28,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588444921] [2022-01-11 06:40:28,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:28,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:28,765 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 06:40:28,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:28,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588444921] [2022-01-11 06:40:28,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588444921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:28,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:28,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:40:28,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245656462] [2022-01-11 06:40:28,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:28,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:40:28,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:28,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:40:28,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:40:28,768 INFO L87 Difference]: Start difference. First operand 244 states and 367 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 06:40:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:28,786 INFO L93 Difference]: Finished difference Result 632 states and 981 transitions. [2022-01-11 06:40:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:40:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-11 06:40:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:28,790 INFO L225 Difference]: With dead ends: 632 [2022-01-11 06:40:28,791 INFO L226 Difference]: Without dead ends: 422 [2022-01-11 06:40:28,795 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 06:40:28,798 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:28,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 283 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:40:28,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-11 06:40:28,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 420. [2022-01-11 06:40:28,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.5346062052505967) internal successors, (643), 419 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 06:40:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 643 transitions. [2022-01-11 06:40:28,821 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 643 transitions. Word has length 62 [2022-01-11 06:40:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:28,821 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 643 transitions. [2022-01-11 06:40:28,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 06:40:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 643 transitions. [2022-01-11 06:40:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:40:28,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:28,822 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] [2022-01-11 06:40:28,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:40:28,822 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:28,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:28,822 INFO L85 PathProgramCache]: Analyzing trace with hash 565014657, now seen corresponding path program 1 times [2022-01-11 06:40:28,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:28,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350731559] [2022-01-11 06:40:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:28,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:28,989 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 06:40:28,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:28,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350731559] [2022-01-11 06:40:28,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350731559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:28,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:28,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:40:28,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439611162] [2022-01-11 06:40:28,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:28,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:40:28,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:28,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:40:28,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:40:28,992 INFO L87 Difference]: Start difference. First operand 420 states and 643 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 06:40:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:29,054 INFO L93 Difference]: Finished difference Result 1128 states and 1757 transitions. [2022-01-11 06:40:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:40:29,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-11 06:40:29,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:29,060 INFO L225 Difference]: With dead ends: 1128 [2022-01-11 06:40:29,060 INFO L226 Difference]: Without dead ends: 742 [2022-01-11 06:40:29,060 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 06:40:29,067 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 68 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:29,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 279 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:40:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-01-11 06:40:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 740. [2022-01-11 06:40:29,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 1.5412719891745603) internal successors, (1139), 739 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states 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 06:40:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1139 transitions. [2022-01-11 06:40:29,086 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1139 transitions. Word has length 63 [2022-01-11 06:40:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:29,086 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 1139 transitions. [2022-01-11 06:40:29,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 06:40:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1139 transitions. [2022-01-11 06:40:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 06:40:29,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:29,087 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] [2022-01-11 06:40:29,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:40:29,087 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:29,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:29,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1184209587, now seen corresponding path program 1 times [2022-01-11 06:40:29,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:29,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559565454] [2022-01-11 06:40:29,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:29,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:29,562 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 06:40:29,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:29,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559565454] [2022-01-11 06:40:29,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559565454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:29,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:29,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 06:40:29,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949617142] [2022-01-11 06:40:29,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:29,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:40:29,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:29,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:40:29,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:40:29,564 INFO L87 Difference]: Start difference. First operand 740 states and 1139 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:40:32,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:32,106 INFO L93 Difference]: Finished difference Result 7800 states and 12189 transitions. [2022-01-11 06:40:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:40:32,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 06:40:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:32,132 INFO L225 Difference]: With dead ends: 7800 [2022-01-11 06:40:32,132 INFO L226 Difference]: Without dead ends: 7094 [2022-01-11 06:40:32,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-11 06:40:32,135 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 986 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:32,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 2326 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 06:40:32,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2022-01-11 06:40:32,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 1444. [2022-01-11 06:40:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.5322245322245323) internal successors, (2211), 1443 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states 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 06:40:32,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2211 transitions. [2022-01-11 06:40:32,606 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2211 transitions. Word has length 64 [2022-01-11 06:40:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:32,606 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 2211 transitions. [2022-01-11 06:40:32,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:40:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2211 transitions. [2022-01-11 06:40:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:40:32,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:32,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:40:32,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:40:32,607 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash -171506383, now seen corresponding path program 1 times [2022-01-11 06:40:32,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:32,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723326119] [2022-01-11 06:40:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:32,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:32,708 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 06:40:32,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:32,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723326119] [2022-01-11 06:40:32,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723326119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:32,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:32,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:40:32,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420663931] [2022-01-11 06:40:32,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:32,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:40:32,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:32,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:40:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:40:32,710 INFO L87 Difference]: Start difference. First operand 1444 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:40:34,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:35,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:35,849 INFO L93 Difference]: Finished difference Result 4056 states and 6197 transitions. [2022-01-11 06:40:35,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:40:35,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 06:40:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:35,857 INFO L225 Difference]: With dead ends: 4056 [2022-01-11 06:40:35,857 INFO L226 Difference]: Without dead ends: 2646 [2022-01-11 06:40:35,859 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 06:40:35,860 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 84 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:35,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 331 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:40:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-01-11 06:40:36,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2580. [2022-01-11 06:40:36,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2579 states have (on average 1.4963164017060877) internal successors, (3859), 2579 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states 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 06:40:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3859 transitions. [2022-01-11 06:40:36,714 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3859 transitions. Word has length 66 [2022-01-11 06:40:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:36,715 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 3859 transitions. [2022-01-11 06:40:36,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:40:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3859 transitions. [2022-01-11 06:40:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:40:36,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:36,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:40:36,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:40:36,716 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash -170493489, now seen corresponding path program 1 times [2022-01-11 06:40:36,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:36,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559609591] [2022-01-11 06:40:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:36,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:37,104 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 06:40:37,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:37,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559609591] [2022-01-11 06:40:37,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559609591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:37,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:37,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 06:40:37,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141566489] [2022-01-11 06:40:37,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:37,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:40:37,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:40:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:40:37,106 INFO L87 Difference]: Start difference. First operand 2580 states and 3859 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:40:44,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:44,308 INFO L93 Difference]: Finished difference Result 15320 states and 22989 transitions. [2022-01-11 06:40:44,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:40:44,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 06:40:44,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:44,393 INFO L225 Difference]: With dead ends: 15320 [2022-01-11 06:40:44,393 INFO L226 Difference]: Without dead ends: 12774 [2022-01-11 06:40:44,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-11 06:40:44,399 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 975 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:44,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 2348 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-11 06:40:44,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12774 states. [2022-01-11 06:40:45,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12774 to 2580. [2022-01-11 06:40:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2579 states have (on average 1.4901124466847615) internal successors, (3843), 2579 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states 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 06:40:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3843 transitions. [2022-01-11 06:40:45,984 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3843 transitions. Word has length 66 [2022-01-11 06:40:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:45,984 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 3843 transitions. [2022-01-11 06:40:45,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:40:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3843 transitions. [2022-01-11 06:40:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:40:45,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:45,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:40:45,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:40:45,986 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash 816145346, now seen corresponding path program 1 times [2022-01-11 06:40:45,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:45,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807565680] [2022-01-11 06:40:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:45,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:46,058 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 06:40:46,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:46,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807565680] [2022-01-11 06:40:46,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807565680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:46,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:46,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:40:46,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728058453] [2022-01-11 06:40:46,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:46,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:40:46,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:46,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:40:46,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:40:46,059 INFO L87 Difference]: Start difference. First operand 2580 states and 3843 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:40:48,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:48,181 INFO L93 Difference]: Finished difference Result 6360 states and 9493 transitions. [2022-01-11 06:40:48,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:40:48,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 06:40:48,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:48,188 INFO L225 Difference]: With dead ends: 6360 [2022-01-11 06:40:48,188 INFO L226 Difference]: Without dead ends: 3814 [2022-01-11 06:40:48,190 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 06:40:48,191 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:48,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 303 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:40:48,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2022-01-11 06:40:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3812. [2022-01-11 06:40:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3812 states, 3811 states have (on average 1.474416163736552) internal successors, (5619), 3811 states have internal predecessors, (5619), 0 states have call successors, (0), 0 states 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 06:40:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3812 states to 3812 states and 5619 transitions. [2022-01-11 06:40:50,368 INFO L78 Accepts]: Start accepts. Automaton has 3812 states and 5619 transitions. Word has length 67 [2022-01-11 06:40:50,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:50,368 INFO L470 AbstractCegarLoop]: Abstraction has 3812 states and 5619 transitions. [2022-01-11 06:40:50,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:40:50,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3812 states and 5619 transitions. [2022-01-11 06:40:50,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:40:50,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:50,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:40:50,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:40:50,369 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:50,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:50,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1020573092, now seen corresponding path program 1 times [2022-01-11 06:40:50,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:50,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640887856] [2022-01-11 06:40:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:50,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:40:50,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:50,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640887856] [2022-01-11 06:40:50,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640887856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:50,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:50,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:40:50,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826965842] [2022-01-11 06:40:50,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:50,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:40:50,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:40:50,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:40:50,469 INFO L87 Difference]: Start difference. First operand 3812 states and 5619 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:40:52,523 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 06:40:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:55,457 INFO L93 Difference]: Finished difference Result 8826 states and 13063 transitions. [2022-01-11 06:40:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:40:55,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 06:40:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:55,466 INFO L225 Difference]: With dead ends: 8826 [2022-01-11 06:40:55,466 INFO L226 Difference]: Without dead ends: 5048 [2022-01-11 06:40:55,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 06:40:55,470 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 58 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:55,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 219 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 06:40:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2022-01-11 06:40:58,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 5014. [2022-01-11 06:40:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5013 states have (on average 1.46918013165769) internal successors, (7365), 5013 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states 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 06:40:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 7365 transitions. [2022-01-11 06:40:58,236 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 7365 transitions. Word has length 67 [2022-01-11 06:40:58,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:58,240 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 7365 transitions. [2022-01-11 06:40:58,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:40:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 7365 transitions. [2022-01-11 06:40:58,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:40:58,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:58,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:40:58,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:40:58,241 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:58,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:58,241 INFO L85 PathProgramCache]: Analyzing trace with hash -991228957, now seen corresponding path program 1 times [2022-01-11 06:40:58,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:58,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486417360] [2022-01-11 06:40:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:58,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:58,321 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 06:40:58,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:58,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486417360] [2022-01-11 06:40:58,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486417360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:58,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:58,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:40:58,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645968966] [2022-01-11 06:40:58,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:58,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:40:58,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:58,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:40:58,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:40:58,322 INFO L87 Difference]: Start difference. First operand 5014 states and 7365 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:02,299 INFO L93 Difference]: Finished difference Result 7102 states and 10450 transitions. [2022-01-11 06:41:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:41:02,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 06:41:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:02,343 INFO L225 Difference]: With dead ends: 7102 [2022-01-11 06:41:02,343 INFO L226 Difference]: Without dead ends: 7100 [2022-01-11 06:41:02,345 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 06:41:02,346 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 263 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:02,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 423 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:41:02,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2022-01-11 06:41:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 5078. [2022-01-11 06:41:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5078 states, 5077 states have (on average 1.4538113058893047) internal successors, (7381), 5077 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states 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 06:41:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 7381 transitions. [2022-01-11 06:41:05,288 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 7381 transitions. Word has length 67 [2022-01-11 06:41:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:05,289 INFO L470 AbstractCegarLoop]: Abstraction has 5078 states and 7381 transitions. [2022-01-11 06:41:05,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:41:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 7381 transitions. [2022-01-11 06:41:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-11 06:41:05,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:05,291 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:05,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:41:05,291 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2034992021, now seen corresponding path program 1 times [2022-01-11 06:41:05,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:05,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184313184] [2022-01-11 06:41:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:05,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:05,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:05,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184313184] [2022-01-11 06:41:05,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184313184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:05,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:05,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:41:05,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312874644] [2022-01-11 06:41:05,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:05,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:41:05,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:05,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:41:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:41:05,389 INFO L87 Difference]: Start difference. First operand 5078 states and 7381 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 06:41:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:07,660 INFO L93 Difference]: Finished difference Result 8960 states and 13048 transitions. [2022-01-11 06:41:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:41:07,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-11 06:41:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:07,695 INFO L225 Difference]: With dead ends: 8960 [2022-01-11 06:41:07,695 INFO L226 Difference]: Without dead ends: 3918 [2022-01-11 06:41:07,699 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 06:41:07,699 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 62 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:07,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 288 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:41:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2022-01-11 06:41:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3820. [2022-01-11 06:41:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3820 states, 3819 states have (on average 1.446713799423933) internal successors, (5525), 3819 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states 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 06:41:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 5525 transitions. [2022-01-11 06:41:09,978 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 5525 transitions. Word has length 94 [2022-01-11 06:41:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:09,978 INFO L470 AbstractCegarLoop]: Abstraction has 3820 states and 5525 transitions. [2022-01-11 06:41:09,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 06:41:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 5525 transitions. [2022-01-11 06:41:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-11 06:41:09,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:09,981 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:09,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:41:09,981 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:09,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:09,981 INFO L85 PathProgramCache]: Analyzing trace with hash 843132473, now seen corresponding path program 1 times [2022-01-11 06:41:09,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:09,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126299629] [2022-01-11 06:41:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:09,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:41:10,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126299629] [2022-01-11 06:41:10,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126299629] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:41:10,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121606906] [2022-01-11 06:41:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:10,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:41:10,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:41:10,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 06:41:10,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process