/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:01:21,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:01:21,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:01:21,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:01:21,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:01:21,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:01:21,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:01:21,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:01:21,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:01:21,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:01:21,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:01:21,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:01:21,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:01:21,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:01:21,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:01:21,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:01:21,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:01:21,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:01:21,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:01:21,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:01:21,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:01:21,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:01:21,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:01:21,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:01:21,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:01:21,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:01:21,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:01:21,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:01:21,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:01:21,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:01:21,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:01:21,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:01:21,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:01:21,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:01:21,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:01:21,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:01:21,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:01:21,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:01:21,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:01:21,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:01:21,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:01:21,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:01:21,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:01:21,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:01:21,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:01:21,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:01:21,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:01:21,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:01:21,763 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:01:21,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:01:21,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:01:21,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:01:21,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:01:21,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:01:21,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:01:21,763 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:01:21,763 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:01:21,764 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:01:21,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:01:21,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:01:21,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:01:21,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:01:21,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:01:21,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:01:21,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:01:21,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:01:21,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:01:21,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:01:21,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:01:21,765 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:01:21,765 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:01:21,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:01:21,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:01:21,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:01:21,765 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:01:21,766 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:01:21,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:01:21,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:01:21,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:01:21,934 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:01:21,936 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:01:21,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product32.cil.c [2022-01-10 18:01:21,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed53ecc5/ee0b90ce63ff4976a2e8e75a64d58b3f/FLAGe4fa28b8f [2022-01-10 18:01:22,478 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:01:22,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product32.cil.c [2022-01-10 18:01:22,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed53ecc5/ee0b90ce63ff4976a2e8e75a64d58b3f/FLAGe4fa28b8f [2022-01-10 18:01:22,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed53ecc5/ee0b90ce63ff4976a2e8e75a64d58b3f [2022-01-10 18:01:22,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:01:22,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:01:22,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:01:22,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:01:22,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:01:22,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:01:22" (1/1) ... [2022-01-10 18:01:22,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5ebd67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:22, skipping insertion in model container [2022-01-10 18:01:22,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:01:22" (1/1) ... [2022-01-10 18:01:22,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:01:22,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:01:22,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product32.cil.c[45976,45989] [2022-01-10 18:01:23,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:01:23,040 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:01:23,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:01:23,104 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product32.cil.c[45976,45989] [2022-01-10 18:01:23,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:01:23,128 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:01:23,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product32.cil.c[45976,45989] [2022-01-10 18:01:23,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:01:23,253 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:01:23,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23 WrapperNode [2022-01-10 18:01:23,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:01:23,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:01:23,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:01:23,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:01:23,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (1/1) ... [2022-01-10 18:01:23,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (1/1) ... [2022-01-10 18:01:23,397 INFO L137 Inliner]: procedures = 136, calls = 236, calls flagged for inlining = 143, calls inlined = 346, statements flattened = 5241 [2022-01-10 18:01:23,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:01:23,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:01:23,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:01:23,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:01:23,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (1/1) ... [2022-01-10 18:01:23,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (1/1) ... [2022-01-10 18:01:23,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (1/1) ... [2022-01-10 18:01:23,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (1/1) ... [2022-01-10 18:01:23,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (1/1) ... [2022-01-10 18:01:23,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (1/1) ... [2022-01-10 18:01:23,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (1/1) ... [2022-01-10 18:01:23,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:01:23,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:01:23,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:01:23,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:01:23,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (1/1) ... [2022-01-10 18:01:23,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:01:23,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:01:23,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:01:23,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:01:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:01:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:01:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:01:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:01:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:01:23,799 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:01:23,800 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:01:25,646 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:01:25,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:01:25,659 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:01:25,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:01:25 BoogieIcfgContainer [2022-01-10 18:01:25,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:01:25,663 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:01:25,663 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:01:25,664 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:01:25,666 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:01:25" (1/1) ... [2022-01-10 18:01:26,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:01:26 BasicIcfg [2022-01-10 18:01:26,027 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:01:26,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:01:26,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:01:26,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:01:26,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:01:22" (1/4) ... [2022-01-10 18:01:26,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eccf235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:01:26, skipping insertion in model container [2022-01-10 18:01:26,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:23" (2/4) ... [2022-01-10 18:01:26,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eccf235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:01:26, skipping insertion in model container [2022-01-10 18:01:26,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:01:25" (3/4) ... [2022-01-10 18:01:26,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eccf235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:01:26, skipping insertion in model container [2022-01-10 18:01:26,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:01:26" (4/4) ... [2022-01-10 18:01:26,032 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product32.cil.cTransformedIcfg [2022-01-10 18:01:26,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:01:26,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 18:01:26,072 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:01:26,077 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:01:26,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 18:01:26,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 1170 states, 1163 states have (on average 1.6835769561478935) internal successors, (1958), 1169 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:26,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:01:26,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:26,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:26,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:26,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:26,134 INFO L85 PathProgramCache]: Analyzing trace with hash 660501148, now seen corresponding path program 1 times [2022-01-10 18:01:26,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:26,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543462184] [2022-01-10 18:01:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:26,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:26,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:26,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543462184] [2022-01-10 18:01:26,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543462184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:26,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:26,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:01:26,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332214684] [2022-01-10 18:01:26,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:26,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:01:26,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:01:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:01:26,555 INFO L87 Difference]: Start difference. First operand has 1170 states, 1163 states have (on average 1.6835769561478935) internal successors, (1958), 1169 states have internal predecessors, (1958), 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 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:26,652 INFO L93 Difference]: Finished difference Result 2031 states and 3369 transitions. [2022-01-10 18:01:26,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:01:26,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 73 [2022-01-10 18:01:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:26,677 INFO L225 Difference]: With dead ends: 2031 [2022-01-10 18:01:26,678 INFO L226 Difference]: Without dead ends: 1126 [2022-01-10 18:01:26,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:01:26,685 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:26,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:01:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-01-10 18:01:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2022-01-10 18:01:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1120 states have (on average 1.6901785714285715) internal successors, (1893), 1125 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1893 transitions. [2022-01-10 18:01:26,766 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1893 transitions. Word has length 73 [2022-01-10 18:01:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:26,767 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1893 transitions. [2022-01-10 18:01:26,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:26,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1893 transitions. [2022-01-10 18:01:26,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:01:26,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:26,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:26,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:01:26,769 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:26,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:26,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1598740772, now seen corresponding path program 1 times [2022-01-10 18:01:26,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:26,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118938869] [2022-01-10 18:01:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:26,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:27,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:27,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118938869] [2022-01-10 18:01:27,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118938869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:27,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:27,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:01:27,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123543441] [2022-01-10 18:01:27,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:27,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:01:27,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:01:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:01:27,017 INFO L87 Difference]: Start difference. First operand 1126 states and 1893 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:27,175 INFO L93 Difference]: Finished difference Result 2233 states and 3758 transitions. [2022-01-10 18:01:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:01:27,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-01-10 18:01:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:27,180 INFO L225 Difference]: With dead ends: 2233 [2022-01-10 18:01:27,180 INFO L226 Difference]: Without dead ends: 1126 [2022-01-10 18:01:27,182 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 [2022-01-10 18:01:27,183 INFO L933 BasicCegarLoop]: 1872 mSDtfsCounter, 1868 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:27,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1868 Valid, 1885 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-01-10 18:01:27,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2022-01-10 18:01:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1120 states have (on average 1.6883928571428573) internal successors, (1891), 1125 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1891 transitions. [2022-01-10 18:01:27,223 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1891 transitions. Word has length 74 [2022-01-10 18:01:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:27,224 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1891 transitions. [2022-01-10 18:01:27,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1891 transitions. [2022-01-10 18:01:27,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:01:27,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:27,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:27,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:01:27,231 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:27,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash 473897700, now seen corresponding path program 1 times [2022-01-10 18:01:27,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:27,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960417540] [2022-01-10 18:01:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:27,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:27,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:27,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960417540] [2022-01-10 18:01:27,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960417540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:27,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:27,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:27,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532286184] [2022-01-10 18:01:27,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:27,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:27,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:27,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:27,425 INFO L87 Difference]: Start difference. First operand 1126 states and 1891 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:27,714 INFO L93 Difference]: Finished difference Result 5498 states and 9251 transitions. [2022-01-10 18:01:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:01:27,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2022-01-10 18:01:27,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:27,732 INFO L225 Difference]: With dead ends: 5498 [2022-01-10 18:01:27,732 INFO L226 Difference]: Without dead ends: 4396 [2022-01-10 18:01:27,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:01:27,737 INFO L933 BasicCegarLoop]: 3705 mSDtfsCounter, 9238 mSDsluCounter, 5545 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9238 SdHoareTripleChecker+Valid, 9250 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:27,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9238 Valid, 9250 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:27,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2022-01-10 18:01:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 1126. [2022-01-10 18:01:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1120 states have (on average 1.6875) internal successors, (1890), 1125 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1890 transitions. [2022-01-10 18:01:27,877 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1890 transitions. Word has length 76 [2022-01-10 18:01:27,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:27,877 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1890 transitions. [2022-01-10 18:01:27,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:27,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1890 transitions. [2022-01-10 18:01:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:01:27,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:27,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:27,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:01:27,893 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:27,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:27,893 INFO L85 PathProgramCache]: Analyzing trace with hash 194259062, now seen corresponding path program 1 times [2022-01-10 18:01:27,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:27,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887450812] [2022-01-10 18:01:27,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:27,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:28,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:28,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887450812] [2022-01-10 18:01:28,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887450812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:28,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:28,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:01:28,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281351656] [2022-01-10 18:01:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:28,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:01:28,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:01:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:01:28,066 INFO L87 Difference]: Start difference. First operand 1126 states and 1890 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:28,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:28,173 INFO L93 Difference]: Finished difference Result 2237 states and 3758 transitions. [2022-01-10 18:01:28,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:01:28,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-01-10 18:01:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:28,178 INFO L225 Difference]: With dead ends: 2237 [2022-01-10 18:01:28,178 INFO L226 Difference]: Without dead ends: 1140 [2022-01-10 18:01:28,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:01:28,188 INFO L933 BasicCegarLoop]: 1904 mSDtfsCounter, 1869 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:28,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1869 Valid, 1926 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:01:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-01-10 18:01:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1126. [2022-01-10 18:01:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1120 states have (on average 1.6866071428571427) internal successors, (1889), 1125 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1889 transitions. [2022-01-10 18:01:28,238 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1889 transitions. Word has length 77 [2022-01-10 18:01:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:28,238 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1889 transitions. [2022-01-10 18:01:28,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:28,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1889 transitions. [2022-01-10 18:01:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 18:01:28,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:28,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:28,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:01:28,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash 547108771, now seen corresponding path program 1 times [2022-01-10 18:01:28,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:28,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696615964] [2022-01-10 18:01:28,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:28,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:28,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:28,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696615964] [2022-01-10 18:01:28,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696615964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:28,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:28,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:28,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107660823] [2022-01-10 18:01:28,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:28,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:28,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:28,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:28,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:28,369 INFO L87 Difference]: Start difference. First operand 1126 states and 1889 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:28,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:28,551 INFO L93 Difference]: Finished difference Result 3312 states and 5567 transitions. [2022-01-10 18:01:28,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:01:28,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 78 [2022-01-10 18:01:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:28,560 INFO L225 Difference]: With dead ends: 3312 [2022-01-10 18:01:28,560 INFO L226 Difference]: Without dead ends: 2220 [2022-01-10 18:01:28,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:01:28,565 INFO L933 BasicCegarLoop]: 1898 mSDtfsCounter, 9161 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9161 SdHoareTripleChecker+Valid, 3810 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:28,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9161 Valid, 3810 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:28,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2022-01-10 18:01:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 1126. [2022-01-10 18:01:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1120 states have (on average 1.6848214285714285) internal successors, (1887), 1125 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1887 transitions. [2022-01-10 18:01:28,630 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1887 transitions. Word has length 78 [2022-01-10 18:01:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:28,630 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1887 transitions. [2022-01-10 18:01:28,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1887 transitions. [2022-01-10 18:01:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:01:28,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:28,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:28,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:01:28,636 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2101240614, now seen corresponding path program 1 times [2022-01-10 18:01:28,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:28,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979925350] [2022-01-10 18:01:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:28,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:28,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:28,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979925350] [2022-01-10 18:01:28,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979925350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:28,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:28,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:01:28,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214963491] [2022-01-10 18:01:28,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:28,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:01:28,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:01:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:01:28,763 INFO L87 Difference]: Start difference. First operand 1126 states and 1887 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:29,515 INFO L93 Difference]: Finished difference Result 9200 states and 15208 transitions. [2022-01-10 18:01:29,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:01:29,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 80 [2022-01-10 18:01:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:29,545 INFO L225 Difference]: With dead ends: 9200 [2022-01-10 18:01:29,545 INFO L226 Difference]: Without dead ends: 8396 [2022-01-10 18:01:29,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:01:29,551 INFO L933 BasicCegarLoop]: 3779 mSDtfsCounter, 15848 mSDsluCounter, 13181 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15848 SdHoareTripleChecker+Valid, 16960 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:29,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15848 Valid, 16960 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:01:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8396 states. [2022-01-10 18:01:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8396 to 1848. [2022-01-10 18:01:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1842 states have (on average 1.6883821932681868) internal successors, (3110), 1847 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 3110 transitions. [2022-01-10 18:01:29,736 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 3110 transitions. Word has length 80 [2022-01-10 18:01:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:29,737 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 3110 transitions. [2022-01-10 18:01:29,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 3110 transitions. [2022-01-10 18:01:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 18:01:29,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:29,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:29,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:01:29,739 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1595097177, now seen corresponding path program 1 times [2022-01-10 18:01:29,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:29,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058860188] [2022-01-10 18:01:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:29,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:29,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:29,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058860188] [2022-01-10 18:01:29,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058860188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:29,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:29,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:29,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442403636] [2022-01-10 18:01:29,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:29,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:29,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:29,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:29,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:29,858 INFO L87 Difference]: Start difference. First operand 1848 states and 3110 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:30,100 INFO L93 Difference]: Finished difference Result 4087 states and 6768 transitions. [2022-01-10 18:01:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:01:30,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 18:01:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:30,110 INFO L225 Difference]: With dead ends: 4087 [2022-01-10 18:01:30,110 INFO L226 Difference]: Without dead ends: 2855 [2022-01-10 18:01:30,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:01:30,115 INFO L933 BasicCegarLoop]: 1869 mSDtfsCounter, 6751 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6751 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:30,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6751 Valid, 4046 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2022-01-10 18:01:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 1848. [2022-01-10 18:01:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1842 states have (on average 1.6862106406080348) internal successors, (3106), 1847 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 3106 transitions. [2022-01-10 18:01:30,294 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 3106 transitions. Word has length 81 [2022-01-10 18:01:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:30,295 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 3106 transitions. [2022-01-10 18:01:30,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 3106 transitions. [2022-01-10 18:01:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 18:01:30,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:30,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:30,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:01:30,297 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:30,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash 554917628, now seen corresponding path program 1 times [2022-01-10 18:01:30,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:30,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149867518] [2022-01-10 18:01:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:30,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:30,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:30,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149867518] [2022-01-10 18:01:30,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149867518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:30,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:30,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:30,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002847528] [2022-01-10 18:01:30,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:30,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:30,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:30,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:30,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:30,376 INFO L87 Difference]: Start difference. First operand 1848 states and 3106 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:30,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:30,667 INFO L93 Difference]: Finished difference Result 5421 states and 9147 transitions. [2022-01-10 18:01:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:01:30,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 18:01:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:30,680 INFO L225 Difference]: With dead ends: 5421 [2022-01-10 18:01:30,680 INFO L226 Difference]: Without dead ends: 3610 [2022-01-10 18:01:30,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:01:30,685 INFO L933 BasicCegarLoop]: 3673 mSDtfsCounter, 5592 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5592 SdHoareTripleChecker+Valid, 5511 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:30,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5592 Valid, 5511 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:01:30,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2022-01-10 18:01:30,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 1848. [2022-01-10 18:01:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1842 states have (on average 1.6851248642779588) internal successors, (3104), 1847 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 3104 transitions. [2022-01-10 18:01:30,854 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 3104 transitions. Word has length 81 [2022-01-10 18:01:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:30,854 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 3104 transitions. [2022-01-10 18:01:30,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 3104 transitions. [2022-01-10 18:01:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 18:01:30,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:30,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:30,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:01:30,856 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:30,857 INFO L85 PathProgramCache]: Analyzing trace with hash -275951782, now seen corresponding path program 1 times [2022-01-10 18:01:30,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:30,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741386587] [2022-01-10 18:01:30,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:30,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:31,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:31,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741386587] [2022-01-10 18:01:31,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741386587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:31,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:31,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:01:31,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440242999] [2022-01-10 18:01:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:31,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:01:31,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:01:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:01:31,009 INFO L87 Difference]: Start difference. First operand 1848 states and 3104 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:32,646 INFO L93 Difference]: Finished difference Result 9824 states and 15946 transitions. [2022-01-10 18:01:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:01:32,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 18:01:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:32,662 INFO L225 Difference]: With dead ends: 9824 [2022-01-10 18:01:32,662 INFO L226 Difference]: Without dead ends: 8708 [2022-01-10 18:01:32,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:01:32,666 INFO L933 BasicCegarLoop]: 2894 mSDtfsCounter, 15887 mSDsluCounter, 16484 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15887 SdHoareTripleChecker+Valid, 19378 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:32,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15887 Valid, 19378 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 18:01:32,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8708 states. [2022-01-10 18:01:32,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8708 to 3441. [2022-01-10 18:01:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 3435 states have (on average 1.6914119359534208) internal successors, (5810), 3440 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 5810 transitions. [2022-01-10 18:01:32,984 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 5810 transitions. Word has length 82 [2022-01-10 18:01:32,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:32,984 INFO L470 AbstractCegarLoop]: Abstraction has 3441 states and 5810 transitions. [2022-01-10 18:01:32,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:32,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 5810 transitions. [2022-01-10 18:01:32,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 18:01:32,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:32,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:32,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:01:32,989 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:32,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2051708116, now seen corresponding path program 1 times [2022-01-10 18:01:32,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:32,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5815911] [2022-01-10 18:01:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:32,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:33,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:33,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5815911] [2022-01-10 18:01:33,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5815911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:33,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:33,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:01:33,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001807691] [2022-01-10 18:01:33,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:33,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:01:33,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:01:33,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:01:33,127 INFO L87 Difference]: Start difference. First operand 3441 states and 5810 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:35,199 INFO L93 Difference]: Finished difference Result 16298 states and 26600 transitions. [2022-01-10 18:01:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:01:35,199 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 18:01:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:35,226 INFO L225 Difference]: With dead ends: 16298 [2022-01-10 18:01:35,226 INFO L226 Difference]: Without dead ends: 14271 [2022-01-10 18:01:35,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:01:35,233 INFO L933 BasicCegarLoop]: 2758 mSDtfsCounter, 15873 mSDsluCounter, 15779 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15873 SdHoareTripleChecker+Valid, 18537 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:35,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15873 Valid, 18537 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 18:01:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14271 states. [2022-01-10 18:01:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14271 to 6643. [2022-01-10 18:01:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6643 states, 6637 states have (on average 1.6945909296368842) internal successors, (11247), 6642 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6643 states to 6643 states and 11247 transitions. [2022-01-10 18:01:35,839 INFO L78 Accepts]: Start accepts. Automaton has 6643 states and 11247 transitions. Word has length 83 [2022-01-10 18:01:35,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:35,840 INFO L470 AbstractCegarLoop]: Abstraction has 6643 states and 11247 transitions. [2022-01-10 18:01:35,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6643 states and 11247 transitions. [2022-01-10 18:01:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 18:01:35,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:35,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:35,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:01:35,849 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:35,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:35,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1700908179, now seen corresponding path program 1 times [2022-01-10 18:01:35,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:35,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914939185] [2022-01-10 18:01:35,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:35,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:35,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:35,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914939185] [2022-01-10 18:01:35,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914939185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:35,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:35,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:01:35,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248507885] [2022-01-10 18:01:35,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:35,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:01:35,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:35,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:01:35,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:01:35,948 INFO L87 Difference]: Start difference. First operand 6643 states and 11247 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:37,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:37,731 INFO L93 Difference]: Finished difference Result 23486 states and 39376 transitions. [2022-01-10 18:01:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:01:37,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 18:01:37,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:37,774 INFO L225 Difference]: With dead ends: 23486 [2022-01-10 18:01:37,774 INFO L226 Difference]: Without dead ends: 21408 [2022-01-10 18:01:37,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:01:37,784 INFO L933 BasicCegarLoop]: 4345 mSDtfsCounter, 11449 mSDsluCounter, 13261 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11449 SdHoareTripleChecker+Valid, 17606 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:37,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11449 Valid, 17606 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:01:37,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21408 states. [2022-01-10 18:01:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21408 to 7468. [2022-01-10 18:01:38,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7468 states, 7462 states have (on average 1.6898954703832754) internal successors, (12610), 7467 states have internal predecessors, (12610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:38,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7468 states to 7468 states and 12610 transitions. [2022-01-10 18:01:38,581 INFO L78 Accepts]: Start accepts. Automaton has 7468 states and 12610 transitions. Word has length 83 [2022-01-10 18:01:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:38,582 INFO L470 AbstractCegarLoop]: Abstraction has 7468 states and 12610 transitions. [2022-01-10 18:01:38,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:38,582 INFO L276 IsEmpty]: Start isEmpty. Operand 7468 states and 12610 transitions. [2022-01-10 18:01:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 18:01:38,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:38,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:38,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:01:38,590 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:38,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1517663779, now seen corresponding path program 1 times [2022-01-10 18:01:38,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:38,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968677381] [2022-01-10 18:01:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:38,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:38,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:38,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968677381] [2022-01-10 18:01:38,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968677381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:38,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:38,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:01:38,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394806596] [2022-01-10 18:01:38,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:38,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:38,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:38,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:38,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:38,776 INFO L87 Difference]: Start difference. First operand 7468 states and 12610 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:41,547 INFO L93 Difference]: Finished difference Result 31992 states and 52478 transitions. [2022-01-10 18:01:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:01:41,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 18:01:41,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:41,604 INFO L225 Difference]: With dead ends: 31992 [2022-01-10 18:01:41,604 INFO L226 Difference]: Without dead ends: 28078 [2022-01-10 18:01:41,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:01:41,619 INFO L933 BasicCegarLoop]: 1883 mSDtfsCounter, 8191 mSDsluCounter, 7750 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8191 SdHoareTripleChecker+Valid, 9633 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:41,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8191 Valid, 9633 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:01:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28078 states. [2022-01-10 18:01:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28078 to 12282. [2022-01-10 18:01:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12282 states, 12276 states have (on average 1.6544477028347997) internal successors, (20310), 12281 states have internal predecessors, (20310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12282 states to 12282 states and 20310 transitions. [2022-01-10 18:01:43,062 INFO L78 Accepts]: Start accepts. Automaton has 12282 states and 20310 transitions. Word has length 83 [2022-01-10 18:01:43,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:43,062 INFO L470 AbstractCegarLoop]: Abstraction has 12282 states and 20310 transitions. [2022-01-10 18:01:43,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:43,063 INFO L276 IsEmpty]: Start isEmpty. Operand 12282 states and 20310 transitions. [2022-01-10 18:01:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:01:43,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:43,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:43,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:01:43,138 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:43,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash -134809453, now seen corresponding path program 1 times [2022-01-10 18:01:43,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:43,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051370731] [2022-01-10 18:01:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:43,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:43,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:43,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051370731] [2022-01-10 18:01:43,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051370731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:43,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:43,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:43,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434826019] [2022-01-10 18:01:43,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:43,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:43,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:43,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:43,227 INFO L87 Difference]: Start difference. First operand 12282 states and 20310 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:47,249 INFO L93 Difference]: Finished difference Result 46942 states and 75960 transitions. [2022-01-10 18:01:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:01:47,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 18:01:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:47,311 INFO L225 Difference]: With dead ends: 46942 [2022-01-10 18:01:47,312 INFO L226 Difference]: Without dead ends: 39926 [2022-01-10 18:01:47,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:01:47,330 INFO L933 BasicCegarLoop]: 2809 mSDtfsCounter, 6011 mSDsluCounter, 8432 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6011 SdHoareTripleChecker+Valid, 11241 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:47,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6011 Valid, 11241 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39926 states. [2022-01-10 18:01:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39926 to 12418. [2022-01-10 18:01:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12418 states, 12412 states have (on average 1.647276828875282) internal successors, (20446), 12417 states have internal predecessors, (20446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12418 states to 12418 states and 20446 transitions. [2022-01-10 18:01:48,792 INFO L78 Accepts]: Start accepts. Automaton has 12418 states and 20446 transitions. Word has length 85 [2022-01-10 18:01:48,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:48,792 INFO L470 AbstractCegarLoop]: Abstraction has 12418 states and 20446 transitions. [2022-01-10 18:01:48,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 12418 states and 20446 transitions. [2022-01-10 18:01:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:01:48,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:48,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:48,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:01:48,799 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:48,799 INFO L85 PathProgramCache]: Analyzing trace with hash 381910932, now seen corresponding path program 1 times [2022-01-10 18:01:48,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:48,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787363882] [2022-01-10 18:01:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:48,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:48,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:48,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787363882] [2022-01-10 18:01:48,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787363882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:48,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:48,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:01:48,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246292359] [2022-01-10 18:01:48,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:48,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:48,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:48,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:48,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:48,908 INFO L87 Difference]: Start difference. First operand 12418 states and 20446 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:54,711 INFO L93 Difference]: Finished difference Result 57024 states and 92330 transitions. [2022-01-10 18:01:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:01:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 18:01:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:54,783 INFO L225 Difference]: With dead ends: 57024 [2022-01-10 18:01:54,783 INFO L226 Difference]: Without dead ends: 48944 [2022-01-10 18:01:54,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:01:54,800 INFO L933 BasicCegarLoop]: 3874 mSDtfsCounter, 5986 mSDsluCounter, 7482 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5986 SdHoareTripleChecker+Valid, 11356 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:54,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5986 Valid, 11356 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:01:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48944 states. [2022-01-10 18:01:57,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48944 to 21216. [2022-01-10 18:01:57,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21216 states, 21210 states have (on average 1.6304573314474304) internal successors, (34582), 21215 states have internal predecessors, (34582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21216 states to 21216 states and 34582 transitions. [2022-01-10 18:01:57,481 INFO L78 Accepts]: Start accepts. Automaton has 21216 states and 34582 transitions. Word has length 85 [2022-01-10 18:01:57,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:57,481 INFO L470 AbstractCegarLoop]: Abstraction has 21216 states and 34582 transitions. [2022-01-10 18:01:57,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 21216 states and 34582 transitions. [2022-01-10 18:01:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:01:57,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:57,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:57,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:01:57,489 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:57,490 INFO L85 PathProgramCache]: Analyzing trace with hash -724425691, now seen corresponding path program 1 times [2022-01-10 18:01:57,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:57,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343733710] [2022-01-10 18:01:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:57,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:57,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343733710] [2022-01-10 18:01:57,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343733710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:57,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:57,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:01:57,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912862615] [2022-01-10 18:01:57,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:57,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:01:57,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:57,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:01:57,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:01:57,582 INFO L87 Difference]: Start difference. First operand 21216 states and 34582 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:05,137 INFO L93 Difference]: Finished difference Result 75272 states and 119906 transitions. [2022-01-10 18:02:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:02:05,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 87 [2022-01-10 18:02:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:05,240 INFO L225 Difference]: With dead ends: 75272 [2022-01-10 18:02:05,240 INFO L226 Difference]: Without dead ends: 56874 [2022-01-10 18:02:05,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:02:05,272 INFO L933 BasicCegarLoop]: 2738 mSDtfsCounter, 2697 mSDsluCounter, 4258 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 6996 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:05,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2697 Valid, 6996 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:02:05,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56874 states. [2022-01-10 18:02:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56874 to 21408. [2022-01-10 18:02:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21408 states, 21402 states have (on average 1.6248014204279975) internal successors, (34774), 21407 states have internal predecessors, (34774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21408 states to 21408 states and 34774 transitions. [2022-01-10 18:02:08,242 INFO L78 Accepts]: Start accepts. Automaton has 21408 states and 34774 transitions. Word has length 87 [2022-01-10 18:02:08,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:08,242 INFO L470 AbstractCegarLoop]: Abstraction has 21408 states and 34774 transitions. [2022-01-10 18:02:08,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 21408 states and 34774 transitions. [2022-01-10 18:02:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:02:08,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:08,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:08,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:02:08,250 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:02:08,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:08,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1013846074, now seen corresponding path program 1 times [2022-01-10 18:02:08,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:08,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819888766] [2022-01-10 18:02:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:08,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:02:08,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:08,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819888766] [2022-01-10 18:02:08,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819888766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:08,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:08,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:02:08,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831472499] [2022-01-10 18:02:08,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:08,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:02:08,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:08,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:02:08,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:02:08,325 INFO L87 Difference]: Start difference. First operand 21408 states and 34774 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:18,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:18,182 INFO L93 Difference]: Finished difference Result 86612 states and 138278 transitions. [2022-01-10 18:02:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 18:02:18,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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 87 [2022-01-10 18:02:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:18,299 INFO L225 Difference]: With dead ends: 86612 [2022-01-10 18:02:18,299 INFO L226 Difference]: Without dead ends: 67926 [2022-01-10 18:02:18,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:02:18,326 INFO L933 BasicCegarLoop]: 1823 mSDtfsCounter, 9636 mSDsluCounter, 6394 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9636 SdHoareTripleChecker+Valid, 8217 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:18,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9636 Valid, 8217 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:02:18,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67926 states. [2022-01-10 18:02:22,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67926 to 31210. [2022-01-10 18:02:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31210 states, 31204 states have (on average 1.6207537495192923) internal successors, (50574), 31209 states have internal predecessors, (50574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31210 states to 31210 states and 50574 transitions. [2022-01-10 18:02:22,638 INFO L78 Accepts]: Start accepts. Automaton has 31210 states and 50574 transitions. Word has length 87 [2022-01-10 18:02:22,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:22,638 INFO L470 AbstractCegarLoop]: Abstraction has 31210 states and 50574 transitions. [2022-01-10 18:02:22,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 31210 states and 50574 transitions. [2022-01-10 18:02:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:02:22,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:22,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:22,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:02:22,648 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:02:22,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:22,648 INFO L85 PathProgramCache]: Analyzing trace with hash 368494646, now seen corresponding path program 1 times [2022-01-10 18:02:22,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:22,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726312865] [2022-01-10 18:02:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:22,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:02:22,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:22,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726312865] [2022-01-10 18:02:22,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726312865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:22,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:22,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:02:22,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071685790] [2022-01-10 18:02:22,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:22,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:02:22,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:22,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:02:22,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:02:22,738 INFO L87 Difference]: Start difference. First operand 31210 states and 50574 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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)