/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_spec0_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:00:03,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:00:03,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:00:04,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:00:04,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:00:04,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:00:04,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:00:04,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:00:04,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:00:04,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:00:04,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:00:04,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:00:04,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:00:04,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:00:04,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:00:04,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:00:04,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:00:04,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:00:04,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:00:04,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:00:04,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:00:04,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:00:04,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:00:04,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:00:04,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:00:04,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:00:04,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:00:04,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:00:04,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:00:04,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:00:04,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:00:04,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:00:04,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:00:04,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:00:04,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:00:04,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:00:04,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:00:04,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:00:04,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:00:04,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:00:04,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:00:04,093 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 18:00:04,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:00:04,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:00:04,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:00:04,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:00:04,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:00:04,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:00:04,127 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:00:04,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:00:04,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:00:04,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:00:04,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:00:04,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:00:04,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:00:04,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:00:04,128 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:00:04,129 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:00:04,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:00:04,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:00:04,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:00:04,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:00:04,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:00:04,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:00:04,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:00:04,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:00:04,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:00:04,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:00:04,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:00:04,130 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:00:04,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:00:04,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:00:04,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:00:04,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:00:04,131 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:00:04,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:00:04,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:00:04,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:00:04,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:00:04,372 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:00:04,373 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:00:04,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product35.cil.c [2022-01-10 18:00:04,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a255dee50/dbe7ac3e5b9941eead91b6d2f94a277b/FLAG48044b1bf [2022-01-10 18:00:05,028 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:00:05,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product35.cil.c [2022-01-10 18:00:05,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a255dee50/dbe7ac3e5b9941eead91b6d2f94a277b/FLAG48044b1bf [2022-01-10 18:00:05,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a255dee50/dbe7ac3e5b9941eead91b6d2f94a277b [2022-01-10 18:00:05,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:00:05,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:00:05,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:00:05,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:00:05,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:00:05,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:00:05" (1/1) ... [2022-01-10 18:00:05,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afbd454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:05, skipping insertion in model container [2022-01-10 18:00:05,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:00:05" (1/1) ... [2022-01-10 18:00:05,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:00:05,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:00:05,753 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_spec0_product35.cil.c[5573,5586] [2022-01-10 18:00:05,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:00:06,017 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:00:06,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:00:06,046 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_spec0_product35.cil.c[5573,5586] [2022-01-10 18:00:06,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:00:06,171 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:00:06,200 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_spec0_product35.cil.c[5573,5586] [2022-01-10 18:00:06,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:00:06,312 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:00:06,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06 WrapperNode [2022-01-10 18:00:06,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:00:06,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:00:06,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:00:06,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:00:06,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (1/1) ... [2022-01-10 18:00:06,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (1/1) ... [2022-01-10 18:00:06,505 INFO L137 Inliner]: procedures = 139, calls = 246, calls flagged for inlining = 151, calls inlined = 468, statements flattened = 6946 [2022-01-10 18:00:06,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:00:06,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:00:06,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:00:06,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:00:06,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (1/1) ... [2022-01-10 18:00:06,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (1/1) ... [2022-01-10 18:00:06,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (1/1) ... [2022-01-10 18:00:06,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (1/1) ... [2022-01-10 18:00:06,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (1/1) ... [2022-01-10 18:00:06,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (1/1) ... [2022-01-10 18:00:06,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (1/1) ... [2022-01-10 18:00:06,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:00:06,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:00:06,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:00:06,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:00:06,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (1/1) ... [2022-01-10 18:00:06,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:00:06,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:00:06,745 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 18:00:06,768 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 18:00:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:00:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:00:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:00:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:00:06,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:00:07,034 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:00:07,035 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:00:09,717 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:00:09,739 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:00:09,739 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:00:09,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:00:09 BoogieIcfgContainer [2022-01-10 18:00:09,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:00:09,744 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:00:09,744 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:00:09,745 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:00:09,747 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:00:09" (1/1) ... [2022-01-10 18:00:10,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:00:10 BasicIcfg [2022-01-10 18:00:10,325 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:00:10,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:00:10,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:00:10,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:00:10,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:00:05" (1/4) ... [2022-01-10 18:00:10,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ebaf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:00:10, skipping insertion in model container [2022-01-10 18:00:10,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:06" (2/4) ... [2022-01-10 18:00:10,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ebaf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:00:10, skipping insertion in model container [2022-01-10 18:00:10,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:00:09" (3/4) ... [2022-01-10 18:00:10,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ebaf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:00:10, skipping insertion in model container [2022-01-10 18:00:10,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:00:10" (4/4) ... [2022-01-10 18:00:10,335 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product35.cil.cTransformedIcfg [2022-01-10 18:00:10,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:00:10,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 18:00:10,394 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:00:10,404 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 18:00:10,405 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 18:00:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 1445 states, 1438 states have (on average 1.6592489568845619) internal successors, (2386), 1444 states have internal predecessors, (2386), 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 18:00:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:00:10,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:10,449 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] [2022-01-10 18:00:10,450 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 18:00:10,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash 502539603, now seen corresponding path program 1 times [2022-01-10 18:00:10,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:10,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188800891] [2022-01-10 18:00:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:10,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:10,937 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 18:00:10,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:10,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188800891] [2022-01-10 18:00:10,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188800891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:10,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:10,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:00:10,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401541070] [2022-01-10 18:00:10,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:10,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:00:10,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:00:10,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:00:10,996 INFO L87 Difference]: Start difference. First operand has 1445 states, 1438 states have (on average 1.6592489568845619) internal successors, (2386), 1444 states have internal predecessors, (2386), 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 39.5) internal successors, (79), 2 states have internal predecessors, (79), 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 18:00:11,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:11,151 INFO L93 Difference]: Finished difference Result 2576 states and 4217 transitions. [2022-01-10 18:00:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:00:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 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 79 [2022-01-10 18:00:11,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:11,172 INFO L225 Difference]: With dead ends: 2576 [2022-01-10 18:00:11,172 INFO L226 Difference]: Without dead ends: 1345 [2022-01-10 18:00:11,183 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 18:00:11,189 INFO L933 BasicCegarLoop]: 2372 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, 2372 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 18:00:11,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:00:11,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2022-01-10 18:00:11,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1345. [2022-01-10 18:00:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1339 states have (on average 1.6691560866318147) internal successors, (2235), 1344 states have internal predecessors, (2235), 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 18:00:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2235 transitions. [2022-01-10 18:00:11,291 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2235 transitions. Word has length 79 [2022-01-10 18:00:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:11,292 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 2235 transitions. [2022-01-10 18:00:11,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 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 18:00:11,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2235 transitions. [2022-01-10 18:00:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:00:11,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:11,300 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 18:00:11,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:00:11,301 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 18:00:11,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:11,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1669581283, now seen corresponding path program 1 times [2022-01-10 18:00:11,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:11,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991895830] [2022-01-10 18:00:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:11,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:11,558 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 18:00:11,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:11,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991895830] [2022-01-10 18:00:11,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991895830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:11,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:11,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:00:11,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694844300] [2022-01-10 18:00:11,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:11,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:00:11,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:00:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:00:11,562 INFO L87 Difference]: Start difference. First operand 1345 states and 2235 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 18:00:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:11,692 INFO L93 Difference]: Finished difference Result 2671 states and 4442 transitions. [2022-01-10 18:00:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:00:11,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 18:00:11,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:11,699 INFO L225 Difference]: With dead ends: 2671 [2022-01-10 18:00:11,699 INFO L226 Difference]: Without dead ends: 1345 [2022-01-10 18:00:11,705 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 18:00:11,706 INFO L933 BasicCegarLoop]: 2213 mSDtfsCounter, 2210 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2210 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:11,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2210 Valid, 2226 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:00:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2022-01-10 18:00:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1345. [2022-01-10 18:00:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1339 states have (on average 1.667662434652726) internal successors, (2233), 1344 states have internal predecessors, (2233), 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 18:00:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2233 transitions. [2022-01-10 18:00:11,805 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2233 transitions. Word has length 80 [2022-01-10 18:00:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:11,806 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 2233 transitions. [2022-01-10 18:00:11,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 18:00:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2233 transitions. [2022-01-10 18:00:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 18:00:11,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:11,808 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 18:00:11,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:00:11,809 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 18:00:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:11,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2133645411, now seen corresponding path program 1 times [2022-01-10 18:00:11,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:11,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767269682] [2022-01-10 18:00:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:11,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:11,967 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 18:00:11,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:11,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767269682] [2022-01-10 18:00:11,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767269682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:11,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:11,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:00:11,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265976893] [2022-01-10 18:00:11,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:11,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:00:11,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:11,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:00:11,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:00:11,972 INFO L87 Difference]: Start difference. First operand 1345 states and 2233 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 18:00:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:12,437 INFO L93 Difference]: Finished difference Result 6593 states and 10961 transitions. [2022-01-10 18:00:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:00:12,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 18:00:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:12,458 INFO L225 Difference]: With dead ends: 6593 [2022-01-10 18:00:12,460 INFO L226 Difference]: Without dead ends: 5272 [2022-01-10 18:00:12,466 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 18:00:12,469 INFO L933 BasicCegarLoop]: 4389 mSDtfsCounter, 10948 mSDsluCounter, 6571 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10948 SdHoareTripleChecker+Valid, 10960 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 18:00:12,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10948 Valid, 10960 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:00:12,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5272 states. [2022-01-10 18:00:12,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5272 to 1345. [2022-01-10 18:00:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1339 states have (on average 1.6669156086631816) internal successors, (2232), 1344 states have internal predecessors, (2232), 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 18:00:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2232 transitions. [2022-01-10 18:00:12,584 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2232 transitions. Word has length 82 [2022-01-10 18:00:12,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:12,585 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 2232 transitions. [2022-01-10 18:00:12,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 18:00:12,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2232 transitions. [2022-01-10 18:00:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 18:00:12,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:12,588 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 18:00:12,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:00:12,589 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 18:00:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:12,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1495765037, now seen corresponding path program 1 times [2022-01-10 18:00:12,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:12,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810330054] [2022-01-10 18:00:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:12,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:00:12,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:12,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810330054] [2022-01-10 18:00:12,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810330054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:12,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:12,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:00:12,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825284644] [2022-01-10 18:00:12,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:12,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:00:12,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:00:12,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:00:12,769 INFO L87 Difference]: Start difference. First operand 1345 states and 2232 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 18:00:12,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:12,869 INFO L93 Difference]: Finished difference Result 2675 states and 4442 transitions. [2022-01-10 18:00:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:00:12,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 18:00:12,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:12,876 INFO L225 Difference]: With dead ends: 2675 [2022-01-10 18:00:12,877 INFO L226 Difference]: Without dead ends: 1359 [2022-01-10 18:00:12,879 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 18:00:12,886 INFO L933 BasicCegarLoop]: 2246 mSDtfsCounter, 2211 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 2268 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 18:00:12,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2211 Valid, 2268 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:00:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2022-01-10 18:00:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1345. [2022-01-10 18:00:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1339 states have (on average 1.666168782673637) internal successors, (2231), 1344 states have internal predecessors, (2231), 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 18:00:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2231 transitions. [2022-01-10 18:00:12,982 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2231 transitions. Word has length 83 [2022-01-10 18:00:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:12,983 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 2231 transitions. [2022-01-10 18:00:12,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 18:00:12,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2231 transitions. [2022-01-10 18:00:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 18:00:12,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:12,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:00:12,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:00:12,985 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 18:00:12,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:12,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1080325924, now seen corresponding path program 1 times [2022-01-10 18:00:12,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:12,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616695122] [2022-01-10 18:00:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:12,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:13,136 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 18:00:13,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616695122] [2022-01-10 18:00:13,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616695122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:13,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:13,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:00:13,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358229795] [2022-01-10 18:00:13,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:13,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:00:13,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:13,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:00:13,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:00:13,140 INFO L87 Difference]: Start difference. First operand 1345 states and 2231 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:00:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:13,449 INFO L93 Difference]: Finished difference Result 3969 states and 6593 transitions. [2022-01-10 18:00:13,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:00:13,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 18:00:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:13,461 INFO L225 Difference]: With dead ends: 3969 [2022-01-10 18:00:13,461 INFO L226 Difference]: Without dead ends: 2658 [2022-01-10 18:00:13,464 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 18:00:13,465 INFO L933 BasicCegarLoop]: 2240 mSDtfsCounter, 10871 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10871 SdHoareTripleChecker+Valid, 4494 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 18:00:13,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10871 Valid, 4494 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:00:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2022-01-10 18:00:13,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 1345. [2022-01-10 18:00:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1339 states have (on average 1.6646751306945482) internal successors, (2229), 1344 states have internal predecessors, (2229), 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 18:00:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2229 transitions. [2022-01-10 18:00:13,568 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2229 transitions. Word has length 84 [2022-01-10 18:00:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:13,573 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 2229 transitions. [2022-01-10 18:00:13,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:00:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2229 transitions. [2022-01-10 18:00:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 18:00:13,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:13,576 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] [2022-01-10 18:00:13,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:00:13,576 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 18:00:13,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1809390113, now seen corresponding path program 1 times [2022-01-10 18:00:13,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:13,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139398744] [2022-01-10 18:00:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:13,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:13,719 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 18:00:13,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:13,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139398744] [2022-01-10 18:00:13,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139398744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:13,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:13,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:00:13,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597870442] [2022-01-10 18:00:13,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:13,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:00:13,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:13,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:00:13,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:00:13,721 INFO L87 Difference]: Start difference. First operand 1345 states and 2229 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 18:00:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:14,882 INFO L93 Difference]: Finished difference Result 11574 states and 18914 transitions. [2022-01-10 18:00:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:00:14,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 86 [2022-01-10 18:00:14,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:14,925 INFO L225 Difference]: With dead ends: 11574 [2022-01-10 18:00:14,925 INFO L226 Difference]: Without dead ends: 10556 [2022-01-10 18:00:14,932 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 18:00:14,932 INFO L933 BasicCegarLoop]: 4579 mSDtfsCounter, 19764 mSDsluCounter, 16017 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19764 SdHoareTripleChecker+Valid, 20596 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:14,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19764 Valid, 20596 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:00:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10556 states. [2022-01-10 18:00:15,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10556 to 2207. [2022-01-10 18:00:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2201 states have (on average 1.6674238982280782) internal successors, (3670), 2206 states have internal predecessors, (3670), 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 18:00:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3670 transitions. [2022-01-10 18:00:15,187 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3670 transitions. Word has length 86 [2022-01-10 18:00:15,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:15,187 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3670 transitions. [2022-01-10 18:00:15,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 18:00:15,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3670 transitions. [2022-01-10 18:00:15,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:00:15,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:15,191 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 18:00:15,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:00:15,191 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 18:00:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1641742110, now seen corresponding path program 1 times [2022-01-10 18:00:15,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:15,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391279770] [2022-01-10 18:00:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:15,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:15,357 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 18:00:15,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:15,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391279770] [2022-01-10 18:00:15,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391279770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:15,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:15,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:00:15,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741278492] [2022-01-10 18:00:15,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:15,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:00:15,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:15,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:00:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:00:15,360 INFO L87 Difference]: Start difference. First operand 2207 states and 3670 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 18:00:15,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:15,750 INFO L93 Difference]: Finished difference Result 5144 states and 8416 transitions. [2022-01-10 18:00:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:00:15,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 18:00:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:15,781 INFO L225 Difference]: With dead ends: 5144 [2022-01-10 18:00:15,782 INFO L226 Difference]: Without dead ends: 3563 [2022-01-10 18:00:15,786 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 18:00:15,788 INFO L933 BasicCegarLoop]: 2211 mSDtfsCounter, 8429 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8429 SdHoareTripleChecker+Valid, 4738 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 18:00:15,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8429 Valid, 4738 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:00:15,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2022-01-10 18:00:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 2207. [2022-01-10 18:00:16,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2201 states have (on average 1.6656065424806905) internal successors, (3666), 2206 states have internal predecessors, (3666), 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 18:00:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3666 transitions. [2022-01-10 18:00:16,031 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3666 transitions. Word has length 87 [2022-01-10 18:00:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:16,034 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3666 transitions. [2022-01-10 18:00:16,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 18:00:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3666 transitions. [2022-01-10 18:00:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:00:16,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:16,038 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 18:00:16,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:00:16,038 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 18:00:16,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:16,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1019218611, now seen corresponding path program 1 times [2022-01-10 18:00:16,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:16,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594091214] [2022-01-10 18:00:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:16,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:16,147 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 18:00:16,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:16,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594091214] [2022-01-10 18:00:16,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594091214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:16,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:16,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:00:16,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715856407] [2022-01-10 18:00:16,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:16,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:00:16,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:16,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:00:16,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:00:16,150 INFO L87 Difference]: Start difference. First operand 2207 states and 3666 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 18:00:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:16,623 INFO L93 Difference]: Finished difference Result 6498 states and 10827 transitions. [2022-01-10 18:00:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:00:16,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 18:00:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:16,638 INFO L225 Difference]: With dead ends: 6498 [2022-01-10 18:00:16,639 INFO L226 Difference]: Without dead ends: 4328 [2022-01-10 18:00:16,645 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 18:00:16,646 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 6618 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6618 SdHoareTripleChecker+Valid, 6537 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:16,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6618 Valid, 6537 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:00:16,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2022-01-10 18:00:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 2207. [2022-01-10 18:00:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2201 states have (on average 1.6646978646069968) internal successors, (3664), 2206 states have internal predecessors, (3664), 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 18:00:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3664 transitions. [2022-01-10 18:00:16,900 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3664 transitions. Word has length 87 [2022-01-10 18:00:16,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:16,900 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3664 transitions. [2022-01-10 18:00:16,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 18:00:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3664 transitions. [2022-01-10 18:00:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 18:00:16,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:16,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:00:16,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:00:16,905 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 18:00:16,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:16,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2016742099, now seen corresponding path program 1 times [2022-01-10 18:00:16,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:16,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575258414] [2022-01-10 18:00:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:16,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:17,111 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 18:00:17,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:17,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575258414] [2022-01-10 18:00:17,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575258414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:17,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:17,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:00:17,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2497801] [2022-01-10 18:00:17,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:17,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:00:17,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:17,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:00:17,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:00:17,114 INFO L87 Difference]: Start difference. First operand 2207 states and 3664 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 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 18:00:19,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:19,766 INFO L93 Difference]: Finished difference Result 13162 states and 21122 transitions. [2022-01-10 18:00:19,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:00:19,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 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 88 [2022-01-10 18:00:19,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:19,796 INFO L225 Difference]: With dead ends: 13162 [2022-01-10 18:00:19,796 INFO L226 Difference]: Without dead ends: 11697 [2022-01-10 18:00:19,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:00:19,806 INFO L933 BasicCegarLoop]: 4138 mSDtfsCounter, 17529 mSDsluCounter, 21300 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17529 SdHoareTripleChecker+Valid, 25438 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:19,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17529 Valid, 25438 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 18:00:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11697 states. [2022-01-10 18:00:20,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11697 to 4125. [2022-01-10 18:00:20,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4119 states have (on average 1.6693372177713037) internal successors, (6876), 4124 states have internal predecessors, (6876), 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 18:00:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 6876 transitions. [2022-01-10 18:00:20,239 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 6876 transitions. Word has length 88 [2022-01-10 18:00:20,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:20,239 INFO L470 AbstractCegarLoop]: Abstraction has 4125 states and 6876 transitions. [2022-01-10 18:00:20,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 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 18:00:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 6876 transitions. [2022-01-10 18:00:20,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 18:00:20,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:20,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:00:20,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:00:20,245 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 18:00:20,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:20,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1449964284, now seen corresponding path program 1 times [2022-01-10 18:00:20,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:20,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669635659] [2022-01-10 18:00:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:20,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:20,350 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 18:00:20,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:20,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669635659] [2022-01-10 18:00:20,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669635659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:20,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:20,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:00:20,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88273494] [2022-01-10 18:00:20,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:20,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:00:20,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:00:20,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:00:20,352 INFO L87 Difference]: Start difference. First operand 4125 states and 6876 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 18:00:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:20,997 INFO L93 Difference]: Finished difference Result 7066 states and 11602 transitions. [2022-01-10 18:00:20,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:00:20,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 89 [2022-01-10 18:00:20,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:21,010 INFO L225 Difference]: With dead ends: 7066 [2022-01-10 18:00:21,010 INFO L226 Difference]: Without dead ends: 5473 [2022-01-10 18:00:21,014 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 18:00:21,015 INFO L933 BasicCegarLoop]: 2219 mSDtfsCounter, 4664 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4664 SdHoareTripleChecker+Valid, 4667 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:21,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4664 Valid, 4667 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:00:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2022-01-10 18:00:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 4125. [2022-01-10 18:00:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4119 states have (on average 1.668851663025006) internal successors, (6874), 4124 states have internal predecessors, (6874), 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 18:00:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 6874 transitions. [2022-01-10 18:00:21,379 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 6874 transitions. Word has length 89 [2022-01-10 18:00:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:21,379 INFO L470 AbstractCegarLoop]: Abstraction has 4125 states and 6874 transitions. [2022-01-10 18:00:21,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 18:00:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 6874 transitions. [2022-01-10 18:00:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 18:00:21,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:21,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:00:21,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:00:21,386 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 18:00:21,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:21,387 INFO L85 PathProgramCache]: Analyzing trace with hash -680794269, now seen corresponding path program 1 times [2022-01-10 18:00:21,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:21,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080006802] [2022-01-10 18:00:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:21,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:21,520 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 18:00:21,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:21,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080006802] [2022-01-10 18:00:21,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080006802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:21,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:21,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:00:21,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562902358] [2022-01-10 18:00:21,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:21,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:00:21,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:00:21,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:00:21,522 INFO L87 Difference]: Start difference. First operand 4125 states and 6874 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 18:00:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:23,224 INFO L93 Difference]: Finished difference Result 14786 states and 23836 transitions. [2022-01-10 18:00:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:00:23,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 89 [2022-01-10 18:00:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:23,252 INFO L225 Difference]: With dead ends: 14786 [2022-01-10 18:00:23,252 INFO L226 Difference]: Without dead ends: 12271 [2022-01-10 18:00:23,260 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 18:00:23,260 INFO L933 BasicCegarLoop]: 6695 mSDtfsCounter, 6418 mSDsluCounter, 12324 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6418 SdHoareTripleChecker+Valid, 19019 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:23,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6418 Valid, 19019 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:00:23,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12271 states. [2022-01-10 18:00:23,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12271 to 5612. [2022-01-10 18:00:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5612 states, 5606 states have (on average 1.6485907955761685) internal successors, (9242), 5611 states have internal predecessors, (9242), 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 18:00:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 9242 transitions. [2022-01-10 18:00:23,774 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 9242 transitions. Word has length 89 [2022-01-10 18:00:23,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:23,775 INFO L470 AbstractCegarLoop]: Abstraction has 5612 states and 9242 transitions. [2022-01-10 18:00:23,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 18:00:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 9242 transitions. [2022-01-10 18:00:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 18:00:23,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:23,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:00:23,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:00:23,782 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 18:00:23,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:23,782 INFO L85 PathProgramCache]: Analyzing trace with hash 373995905, now seen corresponding path program 1 times [2022-01-10 18:00:23,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:23,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933448026] [2022-01-10 18:00:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:23,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:23,926 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 18:00:23,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:23,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933448026] [2022-01-10 18:00:23,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933448026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:23,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:23,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:00:23,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891567024] [2022-01-10 18:00:23,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:23,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:00:23,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:00:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:00:23,928 INFO L87 Difference]: Start difference. First operand 5612 states and 9242 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 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 18:00:27,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:27,205 INFO L93 Difference]: Finished difference Result 24424 states and 39190 transitions. [2022-01-10 18:00:27,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:00:27,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 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 89 [2022-01-10 18:00:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:27,253 INFO L225 Difference]: With dead ends: 24424 [2022-01-10 18:00:27,253 INFO L226 Difference]: Without dead ends: 21669 [2022-01-10 18:00:27,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:00:27,265 INFO L933 BasicCegarLoop]: 3551 mSDtfsCounter, 23356 mSDsluCounter, 17768 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23356 SdHoareTripleChecker+Valid, 21319 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:27,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23356 Valid, 21319 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 18:00:27,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21669 states. [2022-01-10 18:00:28,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21669 to 9520. [2022-01-10 18:00:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9520 states, 9514 states have (on average 1.6551397939878074) internal successors, (15747), 9519 states have internal predecessors, (15747), 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 18:00:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9520 states to 9520 states and 15747 transitions. [2022-01-10 18:00:28,182 INFO L78 Accepts]: Start accepts. Automaton has 9520 states and 15747 transitions. Word has length 89 [2022-01-10 18:00:28,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:28,182 INFO L470 AbstractCegarLoop]: Abstraction has 9520 states and 15747 transitions. [2022-01-10 18:00:28,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 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 18:00:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand 9520 states and 15747 transitions. [2022-01-10 18:00:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 18:00:28,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:28,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:00:28,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:00:28,191 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 18:00:28,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash 703761666, now seen corresponding path program 1 times [2022-01-10 18:00:28,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:28,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687827596] [2022-01-10 18:00:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:28,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:28,312 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 18:00:28,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:28,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687827596] [2022-01-10 18:00:28,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687827596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:28,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:28,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:00:28,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673449962] [2022-01-10 18:00:28,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:28,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:00:28,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:00:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:00:28,315 INFO L87 Difference]: Start difference. First operand 9520 states and 15747 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 18:00:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:31,573 INFO L93 Difference]: Finished difference Result 35342 states and 58098 transitions. [2022-01-10 18:00:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:00:31,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 89 [2022-01-10 18:00:31,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:31,642 INFO L225 Difference]: With dead ends: 35342 [2022-01-10 18:00:31,642 INFO L226 Difference]: Without dead ends: 31772 [2022-01-10 18:00:31,658 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 18:00:31,659 INFO L933 BasicCegarLoop]: 5354 mSDtfsCounter, 13815 mSDsluCounter, 15968 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13815 SdHoareTripleChecker+Valid, 21322 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 18:00:31,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13815 Valid, 21322 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:00:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31772 states. [2022-01-10 18:00:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31772 to 10828. [2022-01-10 18:00:32,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10828 states, 10822 states have (on average 1.652189983367215) internal successors, (17880), 10827 states have internal predecessors, (17880), 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 18:00:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10828 states to 10828 states and 17880 transitions. [2022-01-10 18:00:32,924 INFO L78 Accepts]: Start accepts. Automaton has 10828 states and 17880 transitions. Word has length 89 [2022-01-10 18:00:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:32,924 INFO L470 AbstractCegarLoop]: Abstraction has 10828 states and 17880 transitions. [2022-01-10 18:00:32,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 18:00:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 10828 states and 17880 transitions. [2022-01-10 18:00:32,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 18:00:32,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:32,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:00:32,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:00:32,933 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 18:00:32,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1102057330, now seen corresponding path program 1 times [2022-01-10 18:00:32,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:32,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896692744] [2022-01-10 18:00:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:32,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:33,066 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 18:00:33,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:33,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896692744] [2022-01-10 18:00:33,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896692744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:33,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:33,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:00:33,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447166558] [2022-01-10 18:00:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:33,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:00:33,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:00:33,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:00:33,068 INFO L87 Difference]: Start difference. First operand 10828 states and 17880 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 18:00:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:39,490 INFO L93 Difference]: Finished difference Result 58312 states and 93600 transitions. [2022-01-10 18:00:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:00:39,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 89 [2022-01-10 18:00:39,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:39,620 INFO L225 Difference]: With dead ends: 58312 [2022-01-10 18:00:39,620 INFO L226 Difference]: Without dead ends: 51478 [2022-01-10 18:00:39,651 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 18:00:39,652 INFO L933 BasicCegarLoop]: 2300 mSDtfsCounter, 11294 mSDsluCounter, 10208 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11294 SdHoareTripleChecker+Valid, 12508 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:39,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11294 Valid, 12508 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:00:39,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51478 states. [2022-01-10 18:00:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51478 to 19030. [2022-01-10 18:00:42,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19030 states, 19024 states have (on average 1.6158536585365855) internal successors, (30740), 19029 states have internal predecessors, (30740), 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 18:00:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19030 states to 19030 states and 30740 transitions. [2022-01-10 18:00:42,429 INFO L78 Accepts]: Start accepts. Automaton has 19030 states and 30740 transitions. Word has length 89 [2022-01-10 18:00:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:42,430 INFO L470 AbstractCegarLoop]: Abstraction has 19030 states and 30740 transitions. [2022-01-10 18:00:42,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 18:00:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand 19030 states and 30740 transitions. [2022-01-10 18:00:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 18:00:42,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:42,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:00:42,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:00:42,442 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 18:00:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1352189857, now seen corresponding path program 1 times [2022-01-10 18:00:42,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:42,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413734778] [2022-01-10 18:00:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:42,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:42,596 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 18:00:42,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:42,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413734778] [2022-01-10 18:00:42,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413734778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:42,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:42,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:00:42,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199391146] [2022-01-10 18:00:42,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:42,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:00:42,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:42,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:00:42,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:00:42,598 INFO L87 Difference]: Start difference. First operand 19030 states and 30740 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 18:00:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:52,062 INFO L93 Difference]: Finished difference Result 84378 states and 133902 transitions. [2022-01-10 18:00:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:00:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 91 [2022-01-10 18:00:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:52,178 INFO L225 Difference]: With dead ends: 84378 [2022-01-10 18:00:52,179 INFO L226 Difference]: Without dead ends: 71562 [2022-01-10 18:00:52,216 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 18:00:52,217 INFO L933 BasicCegarLoop]: 3772 mSDtfsCounter, 7163 mSDsluCounter, 11007 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7163 SdHoareTripleChecker+Valid, 14779 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:52,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7163 Valid, 14779 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:00:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71562 states. [2022-01-10 18:00:55,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71562 to 19198. [2022-01-10 18:00:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19198 states, 19192 states have (on average 1.6104626927886618) internal successors, (30908), 19197 states have internal predecessors, (30908), 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 18:00:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19198 states to 19198 states and 30908 transitions. [2022-01-10 18:00:55,201 INFO L78 Accepts]: Start accepts. Automaton has 19198 states and 30908 transitions. Word has length 91 [2022-01-10 18:00:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:55,201 INFO L470 AbstractCegarLoop]: Abstraction has 19198 states and 30908 transitions. [2022-01-10 18:00:55,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 18:00:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 19198 states and 30908 transitions. [2022-01-10 18:00:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 18:00:55,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:55,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:00:55,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:00:55,212 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 18:00:55,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:55,213 INFO L85 PathProgramCache]: Analyzing trace with hash 593017504, now seen corresponding path program 1 times [2022-01-10 18:00:55,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:55,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520382380] [2022-01-10 18:00:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:55,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:55,328 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 18:00:55,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:55,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520382380] [2022-01-10 18:00:55,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520382380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:55,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:55,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:00:55,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508551090] [2022-01-10 18:00:55,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:55,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:00:55,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:55,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:00:55,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:00:55,331 INFO L87 Difference]: Start difference. First operand 19198 states and 30908 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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)