/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:11:04,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:11:04,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:11:04,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:11:04,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:11:04,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:11:04,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:11:04,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:11:04,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:11:04,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:11:04,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:11:04,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:11:04,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:11:04,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:11:04,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:11:04,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:11:04,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:11:04,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:11:04,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:11:04,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:11:04,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:11:04,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:11:04,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:11:04,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:11:04,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:11:04,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:11:04,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:11:04,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:11:04,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:11:04,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:11:04,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:11:04,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:11:04,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:11:04,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:11:04,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:11:04,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:11:04,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:11:04,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:11:04,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:11:04,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:11:04,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:11:04,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:11:04,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:11:04,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:11:04,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:11:04,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:11:04,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:11:04,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:11:04,792 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:11:04,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:11:04,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:11:04,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:11:04,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:11:04,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:11:04,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:11:04,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:11:04,793 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:11:04,793 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:11:04,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:11:04,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:11:04,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:11:04,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:11:04,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:11:04,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:11:04,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:11:04,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:11:04,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:11:04,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:11:04,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:11:04,795 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:11:04,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:11:04,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:11:04,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:11:04,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:11:04,795 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:11:04,796 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:11:05,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:11:05,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:11:05,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:11:05,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:11:05,028 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:11:05,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product23.cil.c [2022-01-10 12:11:05,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a58631a3/6a63ea99c0bb4191909b645c49bea67d/FLAG0ef3dbe03 [2022-01-10 12:11:05,647 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:11:05,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product23.cil.c [2022-01-10 12:11:05,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a58631a3/6a63ea99c0bb4191909b645c49bea67d/FLAG0ef3dbe03 [2022-01-10 12:11:05,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a58631a3/6a63ea99c0bb4191909b645c49bea67d [2022-01-10 12:11:05,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:11:05,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:11:05,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:11:05,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:11:05,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:11:05,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:11:05" (1/1) ... [2022-01-10 12:11:05,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5940ce88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:05, skipping insertion in model container [2022-01-10 12:11:05,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:11:05" (1/1) ... [2022-01-10 12:11:05,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:11:06,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:11:06,491 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product23.cil.c[40745,40758] [2022-01-10 12:11:06,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:11:06,662 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:11:06,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:11:06,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product23.cil.c[40745,40758] [2022-01-10 12:11:06,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:11:06,775 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:11:06,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product23.cil.c[40745,40758] [2022-01-10 12:11:06,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:11:06,898 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:11:06,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06 WrapperNode [2022-01-10 12:11:06,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:11:06,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:11:06,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:11:06,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:11:06,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (1/1) ... [2022-01-10 12:11:06,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (1/1) ... [2022-01-10 12:11:07,068 INFO L137 Inliner]: procedures = 132, calls = 217, calls flagged for inlining = 126, calls inlined = 250, statements flattened = 3650 [2022-01-10 12:11:07,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:11:07,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:11:07,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:11:07,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:11:07,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (1/1) ... [2022-01-10 12:11:07,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (1/1) ... [2022-01-10 12:11:07,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (1/1) ... [2022-01-10 12:11:07,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (1/1) ... [2022-01-10 12:11:07,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (1/1) ... [2022-01-10 12:11:07,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (1/1) ... [2022-01-10 12:11:07,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (1/1) ... [2022-01-10 12:11:07,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:11:07,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:11:07,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:11:07,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:11:07,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (1/1) ... [2022-01-10 12:11:07,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:11:07,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:11:07,237 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 12:11:07,268 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 12:11:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:11:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:11:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:11:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:11:07,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:11:07,543 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:11:07,544 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:11:09,065 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:11:09,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:11:09,084 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:11:09,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:11:09 BoogieIcfgContainer [2022-01-10 12:11:09,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:11:09,088 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:11:09,088 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:11:09,089 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:11:09,092 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:11:09" (1/1) ... [2022-01-10 12:11:09,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:11:09 BasicIcfg [2022-01-10 12:11:09,420 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:11:09,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:11:09,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:11:09,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:11:09,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:11:05" (1/4) ... [2022-01-10 12:11:09,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b46c36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:11:09, skipping insertion in model container [2022-01-10 12:11:09,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:11:06" (2/4) ... [2022-01-10 12:11:09,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b46c36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:11:09, skipping insertion in model container [2022-01-10 12:11:09,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:11:09" (3/4) ... [2022-01-10 12:11:09,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b46c36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:11:09, skipping insertion in model container [2022-01-10 12:11:09,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:11:09" (4/4) ... [2022-01-10 12:11:09,426 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product23.cil.cTransformedIcfg [2022-01-10 12:11:09,430 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:11:09,430 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 12:11:09,470 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:11:09,475 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 12:11:09,476 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 12:11:09,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 827 states have (on average 1.6856106408706166) internal successors, (1394), 833 states have internal predecessors, (1394), 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 12:11:09,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 12:11:09,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:09,517 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] [2022-01-10 12:11:09,517 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 12:11:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash -231855604, now seen corresponding path program 1 times [2022-01-10 12:11:09,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:09,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612534126] [2022-01-10 12:11:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:09,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:09,933 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 12:11:09,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:09,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612534126] [2022-01-10 12:11:09,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612534126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:09,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:09,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:11:09,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619560711] [2022-01-10 12:11:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:09,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:11:09,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:09,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:11:09,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:11:10,059 INFO L87 Difference]: Start difference. First operand has 834 states, 827 states have (on average 1.6856106408706166) internal successors, (1394), 833 states have internal predecessors, (1394), 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 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 12:11:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:10,145 INFO L93 Difference]: Finished difference Result 1359 states and 2241 transitions. [2022-01-10 12:11:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:11:10,147 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 56 [2022-01-10 12:11:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:10,178 INFO L225 Difference]: With dead ends: 1359 [2022-01-10 12:11:10,178 INFO L226 Difference]: Without dead ends: 794 [2022-01-10 12:11:10,188 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 12:11:10,195 INFO L933 BasicCegarLoop]: 1380 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, 1380 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 12:11:10,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:11:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-01-10 12:11:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2022-01-10 12:11:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 788 states have (on average 1.6916243654822336) internal successors, (1333), 793 states have internal predecessors, (1333), 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 12:11:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1333 transitions. [2022-01-10 12:11:10,315 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1333 transitions. Word has length 56 [2022-01-10 12:11:10,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:10,316 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1333 transitions. [2022-01-10 12:11:10,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 12:11:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1333 transitions. [2022-01-10 12:11:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 12:11:10,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:10,326 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] [2022-01-10 12:11:10,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:11:10,327 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 12:11:10,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash -822751980, now seen corresponding path program 1 times [2022-01-10 12:11:10,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:10,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808242752] [2022-01-10 12:11:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:10,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:10,633 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 12:11:10,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:10,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808242752] [2022-01-10 12:11:10,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808242752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:10,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:10,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:11:10,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807750865] [2022-01-10 12:11:10,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:10,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:11:10,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:10,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:11:10,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:11:10,636 INFO L87 Difference]: Start difference. First operand 794 states and 1333 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 12:11:10,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:10,743 INFO L93 Difference]: Finished difference Result 1569 states and 2638 transitions. [2022-01-10 12:11:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:11:10,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-01-10 12:11:10,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:10,747 INFO L225 Difference]: With dead ends: 1569 [2022-01-10 12:11:10,748 INFO L226 Difference]: Without dead ends: 794 [2022-01-10 12:11:10,750 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 12:11:10,751 INFO L933 BasicCegarLoop]: 1312 mSDtfsCounter, 1308 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:10,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 1325 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:10,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-01-10 12:11:10,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2022-01-10 12:11:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 788 states have (on average 1.6890862944162437) internal successors, (1331), 793 states have internal predecessors, (1331), 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 12:11:10,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1331 transitions. [2022-01-10 12:11:10,782 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1331 transitions. Word has length 57 [2022-01-10 12:11:10,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:10,783 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1331 transitions. [2022-01-10 12:11:10,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 12:11:10,786 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1331 transitions. [2022-01-10 12:11:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 12:11:10,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:10,792 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] [2022-01-10 12:11:10,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:11:10,793 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 12:11:10,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1674591916, now seen corresponding path program 1 times [2022-01-10 12:11:10,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:10,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204419217] [2022-01-10 12:11:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:10,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:10,938 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 12:11:10,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:10,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204419217] [2022-01-10 12:11:10,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204419217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:10,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:10,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:11:10,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104548207] [2022-01-10 12:11:10,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:10,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:11:10,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:10,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:11:10,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:11:10,942 INFO L87 Difference]: Start difference. First operand 794 states and 1331 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 12:11:11,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:11,266 INFO L93 Difference]: Finished difference Result 3838 states and 6451 transitions. [2022-01-10 12:11:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:11:11,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2022-01-10 12:11:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:11,282 INFO L225 Difference]: With dead ends: 3838 [2022-01-10 12:11:11,283 INFO L226 Difference]: Without dead ends: 3068 [2022-01-10 12:11:11,289 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 12:11:11,292 INFO L933 BasicCegarLoop]: 2585 mSDtfsCounter, 6438 mSDsluCounter, 3865 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6438 SdHoareTripleChecker+Valid, 6450 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 12:11:11,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6438 Valid, 6450 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2022-01-10 12:11:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 794. [2022-01-10 12:11:11,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 788 states have (on average 1.6878172588832487) internal successors, (1330), 793 states have internal predecessors, (1330), 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 12:11:11,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1330 transitions. [2022-01-10 12:11:11,356 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1330 transitions. Word has length 59 [2022-01-10 12:11:11,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:11,357 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1330 transitions. [2022-01-10 12:11:11,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 12:11:11,357 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1330 transitions. [2022-01-10 12:11:11,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:11:11,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:11,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:11,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:11:11,359 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 12:11:11,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:11,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1986395918, now seen corresponding path program 1 times [2022-01-10 12:11:11,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:11,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636232221] [2022-01-10 12:11:11,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:11,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:11,481 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 12:11:11,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:11,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636232221] [2022-01-10 12:11:11,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636232221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:11,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:11,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:11:11,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014170983] [2022-01-10 12:11:11,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:11,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:11:11,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:11,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:11:11,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:11:11,484 INFO L87 Difference]: Start difference. First operand 794 states and 1330 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:11,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:11,547 INFO L93 Difference]: Finished difference Result 1573 states and 2638 transitions. [2022-01-10 12:11:11,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:11:11,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 12:11:11,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:11,551 INFO L225 Difference]: With dead ends: 1573 [2022-01-10 12:11:11,552 INFO L226 Difference]: Without dead ends: 808 [2022-01-10 12:11:11,553 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 12:11:11,560 INFO L933 BasicCegarLoop]: 1344 mSDtfsCounter, 1309 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1366 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 12:11:11,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 1366 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:11:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-01-10 12:11:11,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 794. [2022-01-10 12:11:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 788 states have (on average 1.6865482233502538) internal successors, (1329), 793 states have internal predecessors, (1329), 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 12:11:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1329 transitions. [2022-01-10 12:11:11,603 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1329 transitions. Word has length 60 [2022-01-10 12:11:11,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:11,605 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1329 transitions. [2022-01-10 12:11:11,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:11,605 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1329 transitions. [2022-01-10 12:11:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:11:11,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:11,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:11,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:11:11,608 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 12:11:11,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:11,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1247207605, now seen corresponding path program 1 times [2022-01-10 12:11:11,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:11,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266685387] [2022-01-10 12:11:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:11,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:11,775 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 12:11:11,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:11,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266685387] [2022-01-10 12:11:11,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266685387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:11,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:11,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:11:11,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305787255] [2022-01-10 12:11:11,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:11,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:11:11,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:11,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:11:11,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:11:11,778 INFO L87 Difference]: Start difference. First operand 794 states and 1329 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:11,991 INFO L93 Difference]: Finished difference Result 2316 states and 3887 transitions. [2022-01-10 12:11:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:11:11,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:11:11,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:11,998 INFO L225 Difference]: With dead ends: 2316 [2022-01-10 12:11:11,998 INFO L226 Difference]: Without dead ends: 1556 [2022-01-10 12:11:12,000 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 12:11:12,001 INFO L933 BasicCegarLoop]: 1338 mSDtfsCounter, 6361 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6361 SdHoareTripleChecker+Valid, 2690 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 12:11:12,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6361 Valid, 2690 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:12,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2022-01-10 12:11:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 794. [2022-01-10 12:11:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 788 states have (on average 1.6840101522842639) internal successors, (1327), 793 states have internal predecessors, (1327), 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 12:11:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1327 transitions. [2022-01-10 12:11:12,067 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1327 transitions. Word has length 61 [2022-01-10 12:11:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:12,068 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1327 transitions. [2022-01-10 12:11:12,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1327 transitions. [2022-01-10 12:11:12,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:11:12,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:12,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:12,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:11:12,070 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 12:11:12,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash 156729554, now seen corresponding path program 1 times [2022-01-10 12:11:12,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:12,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267082576] [2022-01-10 12:11:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:12,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:12,209 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 12:11:12,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:12,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267082576] [2022-01-10 12:11:12,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267082576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:12,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:12,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:11:12,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335666015] [2022-01-10 12:11:12,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:12,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:11:12,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:12,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:11:12,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:11:12,212 INFO L87 Difference]: Start difference. First operand 794 states and 1327 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:12,719 INFO L93 Difference]: Finished difference Result 4480 states and 7444 transitions. [2022-01-10 12:11:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:11:12,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 12:11:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:12,737 INFO L225 Difference]: With dead ends: 4480 [2022-01-10 12:11:12,738 INFO L226 Difference]: Without dead ends: 4008 [2022-01-10 12:11:12,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:11:12,744 INFO L933 BasicCegarLoop]: 2405 mSDtfsCounter, 7888 mSDsluCounter, 7897 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7888 SdHoareTripleChecker+Valid, 10302 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:12,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7888 Valid, 10302 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2022-01-10 12:11:12,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 1348. [2022-01-10 12:11:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1342 states have (on average 1.6900149031296572) internal successors, (2268), 1347 states have internal predecessors, (2268), 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 12:11:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2268 transitions. [2022-01-10 12:11:12,882 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2268 transitions. Word has length 63 [2022-01-10 12:11:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:12,884 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 2268 transitions. [2022-01-10 12:11:12,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2268 transitions. [2022-01-10 12:11:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:11:12,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:12,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:12,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:11:12,888 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 12:11:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1803985313, now seen corresponding path program 1 times [2022-01-10 12:11:12,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:12,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734436497] [2022-01-10 12:11:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:12,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:13,042 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 12:11:13,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:13,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734436497] [2022-01-10 12:11:13,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734436497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:13,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:13,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:11:13,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678020393] [2022-01-10 12:11:13,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:13,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:11:13,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:11:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:11:13,045 INFO L87 Difference]: Start difference. First operand 1348 states and 2268 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:13,247 INFO L93 Difference]: Finished difference Result 2302 states and 3817 transitions. [2022-01-10 12:11:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:11:13,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 12:11:13,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:13,253 INFO L225 Difference]: With dead ends: 2302 [2022-01-10 12:11:13,253 INFO L226 Difference]: Without dead ends: 1570 [2022-01-10 12:11:13,255 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 12:11:13,256 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 3583 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3583 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:13,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3583 Valid, 2726 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:11:13,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-01-10 12:11:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1348. [2022-01-10 12:11:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1342 states have (on average 1.6870342771982116) internal successors, (2264), 1347 states have internal predecessors, (2264), 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 12:11:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2264 transitions. [2022-01-10 12:11:13,367 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2264 transitions. Word has length 64 [2022-01-10 12:11:13,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:13,367 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 2264 transitions. [2022-01-10 12:11:13,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2264 transitions. [2022-01-10 12:11:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:11:13,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:13,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:13,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:11:13,370 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 12:11:13,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:13,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1158170196, now seen corresponding path program 1 times [2022-01-10 12:11:13,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:13,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740890266] [2022-01-10 12:11:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:13,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:11:13,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:13,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740890266] [2022-01-10 12:11:13,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740890266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:13,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:13,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:11:13,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237964951] [2022-01-10 12:11:13,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:13,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:11:13,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:11:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:11:13,469 INFO L87 Difference]: Start difference. First operand 1348 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:13,759 INFO L93 Difference]: Finished difference Result 3921 states and 6621 transitions. [2022-01-10 12:11:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:11:13,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 12:11:13,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:13,771 INFO L225 Difference]: With dead ends: 3921 [2022-01-10 12:11:13,772 INFO L226 Difference]: Without dead ends: 2610 [2022-01-10 12:11:13,776 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 12:11:13,776 INFO L933 BasicCegarLoop]: 2553 mSDtfsCounter, 3912 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3912 SdHoareTripleChecker+Valid, 3831 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 12:11:13,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3912 Valid, 3831 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2022-01-10 12:11:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 1348. [2022-01-10 12:11:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1342 states have (on average 1.6855439642324888) internal successors, (2262), 1347 states have internal predecessors, (2262), 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 12:11:13,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2262 transitions. [2022-01-10 12:11:13,960 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2262 transitions. Word has length 64 [2022-01-10 12:11:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:13,961 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 2262 transitions. [2022-01-10 12:11:13,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:13,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2262 transitions. [2022-01-10 12:11:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:11:13,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:13,967 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] [2022-01-10 12:11:13,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:11:13,968 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 12:11:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:13,968 INFO L85 PathProgramCache]: Analyzing trace with hash -10828770, now seen corresponding path program 1 times [2022-01-10 12:11:13,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:13,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252611381] [2022-01-10 12:11:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:13,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:14,078 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 12:11:14,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:14,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252611381] [2022-01-10 12:11:14,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252611381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:14,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:14,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:11:14,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926000321] [2022-01-10 12:11:14,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:14,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:11:14,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:11:14,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:11:14,081 INFO L87 Difference]: Start difference. First operand 1348 states and 2262 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 12:11:14,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:14,258 INFO L93 Difference]: Finished difference Result 1848 states and 3046 transitions. [2022-01-10 12:11:14,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:11:14,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2022-01-10 12:11:14,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:14,264 INFO L225 Difference]: With dead ends: 1848 [2022-01-10 12:11:14,264 INFO L226 Difference]: Without dead ends: 1348 [2022-01-10 12:11:14,266 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 12:11:14,266 INFO L933 BasicCegarLoop]: 1299 mSDtfsCounter, 1336 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:14,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 2573 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:14,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2022-01-10 12:11:14,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1348. [2022-01-10 12:11:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1342 states have (on average 1.678837555886736) internal successors, (2253), 1347 states have internal predecessors, (2253), 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 12:11:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2253 transitions. [2022-01-10 12:11:14,398 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2253 transitions. Word has length 65 [2022-01-10 12:11:14,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:14,398 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 2253 transitions. [2022-01-10 12:11:14,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 12:11:14,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2253 transitions. [2022-01-10 12:11:14,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:11:14,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:14,401 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] [2022-01-10 12:11:14,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:11:14,402 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 12:11:14,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1179754775, now seen corresponding path program 1 times [2022-01-10 12:11:14,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:14,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117628936] [2022-01-10 12:11:14,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:14,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:14,578 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 12:11:14,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:14,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117628936] [2022-01-10 12:11:14,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117628936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:14,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:14,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:11:14,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655787995] [2022-01-10 12:11:14,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:14,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:11:14,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:11:14,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:11:14,581 INFO L87 Difference]: Start difference. First operand 1348 states and 2253 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 12:11:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:16,030 INFO L93 Difference]: Finished difference Result 5841 states and 9383 transitions. [2022-01-10 12:11:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-10 12:11:16,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 68 [2022-01-10 12:11:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:16,049 INFO L225 Difference]: With dead ends: 5841 [2022-01-10 12:11:16,049 INFO L226 Difference]: Without dead ends: 5365 [2022-01-10 12:11:16,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=416, Invalid=1066, Unknown=0, NotChecked=0, Total=1482 [2022-01-10 12:11:16,053 INFO L933 BasicCegarLoop]: 2141 mSDtfsCounter, 11998 mSDsluCounter, 13933 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11998 SdHoareTripleChecker+Valid, 16074 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:16,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11998 Valid, 16074 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:11:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5365 states. [2022-01-10 12:11:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5365 to 2318. [2022-01-10 12:11:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2312 states have (on average 1.6531141868512111) internal successors, (3822), 2317 states have internal predecessors, (3822), 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 12:11:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3822 transitions. [2022-01-10 12:11:16,306 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3822 transitions. Word has length 68 [2022-01-10 12:11:16,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:16,307 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 3822 transitions. [2022-01-10 12:11:16,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 12:11:16,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3822 transitions. [2022-01-10 12:11:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:11:16,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:16,310 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] [2022-01-10 12:11:16,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:11:16,310 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 12:11:16,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1306898941, now seen corresponding path program 1 times [2022-01-10 12:11:16,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:16,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714276433] [2022-01-10 12:11:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:16,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:16,450 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 12:11:16,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:16,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714276433] [2022-01-10 12:11:16,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714276433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:16,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:16,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:11:16,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372908553] [2022-01-10 12:11:16,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:16,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:11:16,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:11:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:11:16,453 INFO L87 Difference]: Start difference. First operand 2318 states and 3822 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 12:11:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:17,203 INFO L93 Difference]: Finished difference Result 7983 states and 13067 transitions. [2022-01-10 12:11:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:11:17,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2022-01-10 12:11:17,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:17,235 INFO L225 Difference]: With dead ends: 7983 [2022-01-10 12:11:17,236 INFO L226 Difference]: Without dead ends: 6961 [2022-01-10 12:11:17,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 12:11:17,241 INFO L933 BasicCegarLoop]: 1527 mSDtfsCounter, 3428 mSDsluCounter, 3837 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3428 SdHoareTripleChecker+Valid, 5364 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:17,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3428 Valid, 5364 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:17,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2022-01-10 12:11:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 4582. [2022-01-10 12:11:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 4576 states have (on average 1.6555944055944056) internal successors, (7576), 4581 states have internal predecessors, (7576), 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 12:11:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 7576 transitions. [2022-01-10 12:11:17,741 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 7576 transitions. Word has length 69 [2022-01-10 12:11:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:17,741 INFO L470 AbstractCegarLoop]: Abstraction has 4582 states and 7576 transitions. [2022-01-10 12:11:17,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 12:11:17,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 7576 transitions. [2022-01-10 12:11:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:11:17,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:17,747 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] [2022-01-10 12:11:17,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:11:17,747 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 12:11:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1709926684, now seen corresponding path program 1 times [2022-01-10 12:11:17,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:17,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323792108] [2022-01-10 12:11:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:17,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:17,896 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 12:11:17,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:17,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323792108] [2022-01-10 12:11:17,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323792108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:17,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:17,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:11:17,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853428348] [2022-01-10 12:11:17,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:17,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:11:17,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:17,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:11:17,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:11:17,898 INFO L87 Difference]: Start difference. First operand 4582 states and 7576 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 12:11:18,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:18,566 INFO L93 Difference]: Finished difference Result 8120 states and 13291 transitions. [2022-01-10 12:11:18,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:11:18,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 69 [2022-01-10 12:11:18,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:18,581 INFO L225 Difference]: With dead ends: 8120 [2022-01-10 12:11:18,581 INFO L226 Difference]: Without dead ends: 5086 [2022-01-10 12:11:18,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2022-01-10 12:11:18,591 INFO L933 BasicCegarLoop]: 1284 mSDtfsCounter, 4095 mSDsluCounter, 4632 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 5916 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:18,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4095 Valid, 5916 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-01-10 12:11:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 4582. [2022-01-10 12:11:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 4576 states have (on average 1.6486013986013985) internal successors, (7544), 4581 states have internal predecessors, (7544), 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 12:11:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 7544 transitions. [2022-01-10 12:11:19,041 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 7544 transitions. Word has length 69 [2022-01-10 12:11:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:19,041 INFO L470 AbstractCegarLoop]: Abstraction has 4582 states and 7544 transitions. [2022-01-10 12:11:19,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 12:11:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 7544 transitions. [2022-01-10 12:11:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:11:19,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:19,045 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] [2022-01-10 12:11:19,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:11:19,045 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 12:11:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:19,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1199392507, now seen corresponding path program 1 times [2022-01-10 12:11:19,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:19,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608890056] [2022-01-10 12:11:19,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:19,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:19,183 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 12:11:19,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:19,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608890056] [2022-01-10 12:11:19,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608890056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:19,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:19,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:11:19,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039914556] [2022-01-10 12:11:19,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:19,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:11:19,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:19,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:11:19,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:11:19,185 INFO L87 Difference]: Start difference. First operand 4582 states and 7544 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 12:11:20,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:20,488 INFO L93 Difference]: Finished difference Result 10232 states and 16618 transitions. [2022-01-10 12:11:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:11:20,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 69 [2022-01-10 12:11:20,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:20,506 INFO L225 Difference]: With dead ends: 10232 [2022-01-10 12:11:20,507 INFO L226 Difference]: Without dead ends: 8158 [2022-01-10 12:11:20,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:11:20,514 INFO L933 BasicCegarLoop]: 2502 mSDtfsCounter, 2418 mSDsluCounter, 6532 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 9034 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:20,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2418 Valid, 9034 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:11:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8158 states. [2022-01-10 12:11:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8158 to 5290. [2022-01-10 12:11:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5284 states have (on average 1.6343679031037093) internal successors, (8636), 5289 states have internal predecessors, (8636), 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 12:11:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 8636 transitions. [2022-01-10 12:11:20,941 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 8636 transitions. Word has length 69 [2022-01-10 12:11:20,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:20,941 INFO L470 AbstractCegarLoop]: Abstraction has 5290 states and 8636 transitions. [2022-01-10 12:11:20,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 12:11:20,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 8636 transitions. [2022-01-10 12:11:20,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:11:20,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:20,946 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] [2022-01-10 12:11:20,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:11:20,946 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 12:11:20,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:20,946 INFO L85 PathProgramCache]: Analyzing trace with hash 110997804, now seen corresponding path program 1 times [2022-01-10 12:11:20,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:20,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845948344] [2022-01-10 12:11:20,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:20,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:21,035 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 12:11:21,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:21,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845948344] [2022-01-10 12:11:21,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845948344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:21,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:21,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:11:21,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640994506] [2022-01-10 12:11:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:21,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:11:21,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:11:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:11:21,037 INFO L87 Difference]: Start difference. First operand 5290 states and 8636 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 12:11:21,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:21,908 INFO L93 Difference]: Finished difference Result 9094 states and 14643 transitions. [2022-01-10 12:11:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:11:21,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2022-01-10 12:11:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:21,922 INFO L225 Difference]: With dead ends: 9094 [2022-01-10 12:11:21,923 INFO L226 Difference]: Without dead ends: 7006 [2022-01-10 12:11:21,926 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 12:11:21,927 INFO L933 BasicCegarLoop]: 1307 mSDtfsCounter, 2106 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:21,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2106 Valid, 2957 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:11:21,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7006 states. [2022-01-10 12:11:22,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7006 to 5290. [2022-01-10 12:11:22,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5284 states have (on average 1.6336109008327024) internal successors, (8632), 5289 states have internal predecessors, (8632), 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 12:11:22,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 8632 transitions. [2022-01-10 12:11:22,349 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 8632 transitions. Word has length 69 [2022-01-10 12:11:22,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:22,350 INFO L470 AbstractCegarLoop]: Abstraction has 5290 states and 8632 transitions. [2022-01-10 12:11:22,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 12:11:22,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 8632 transitions. [2022-01-10 12:11:22,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:11:22,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:22,355 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] [2022-01-10 12:11:22,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:11:22,355 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 12:11:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:22,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1899106037, now seen corresponding path program 1 times [2022-01-10 12:11:22,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:22,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190535350] [2022-01-10 12:11:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:22,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:22,479 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 12:11:22,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:22,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190535350] [2022-01-10 12:11:22,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190535350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:22,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:22,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:11:22,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26793788] [2022-01-10 12:11:22,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:22,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:11:22,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:11:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:11:22,481 INFO L87 Difference]: Start difference. First operand 5290 states and 8632 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 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 12:11:24,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:24,317 INFO L93 Difference]: Finished difference Result 11241 states and 18122 transitions. [2022-01-10 12:11:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:11:24,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 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 69 [2022-01-10 12:11:24,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:24,346 INFO L225 Difference]: With dead ends: 11241 [2022-01-10 12:11:24,346 INFO L226 Difference]: Without dead ends: 9993 [2022-01-10 12:11:24,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2022-01-10 12:11:24,356 INFO L933 BasicCegarLoop]: 3262 mSDtfsCounter, 3872 mSDsluCounter, 9947 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3872 SdHoareTripleChecker+Valid, 13209 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:24,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3872 Valid, 13209 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:11:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9993 states. [2022-01-10 12:11:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9993 to 6120. [2022-01-10 12:11:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6120 states, 6114 states have (on average 1.6225057245665686) internal successors, (9920), 6119 states have internal predecessors, (9920), 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 12:11:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6120 states to 6120 states and 9920 transitions. [2022-01-10 12:11:25,112 INFO L78 Accepts]: Start accepts. Automaton has 6120 states and 9920 transitions. Word has length 69 [2022-01-10 12:11:25,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:25,112 INFO L470 AbstractCegarLoop]: Abstraction has 6120 states and 9920 transitions. [2022-01-10 12:11:25,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 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 12:11:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 6120 states and 9920 transitions. [2022-01-10 12:11:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:11:25,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:25,133 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] [2022-01-10 12:11:25,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:11:25,134 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 12:11:25,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:25,134 INFO L85 PathProgramCache]: Analyzing trace with hash -609850979, now seen corresponding path program 1 times [2022-01-10 12:11:25,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:25,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454471167] [2022-01-10 12:11:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:25,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:25,292 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 12:11:25,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:25,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454471167] [2022-01-10 12:11:25,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454471167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:25,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:25,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:11:25,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216856215] [2022-01-10 12:11:25,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:25,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:11:25,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:25,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:11:25,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:11:25,296 INFO L87 Difference]: Start difference. First operand 6120 states and 9920 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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 12:11:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:27,574 INFO L93 Difference]: Finished difference Result 12406 states and 19940 transitions. [2022-01-10 12:11:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-10 12:11:27,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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 70 [2022-01-10 12:11:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:27,592 INFO L225 Difference]: With dead ends: 12406 [2022-01-10 12:11:27,592 INFO L226 Difference]: Without dead ends: 10040 [2022-01-10 12:11:27,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=409, Invalid=1073, Unknown=0, NotChecked=0, Total=1482 [2022-01-10 12:11:27,599 INFO L933 BasicCegarLoop]: 2247 mSDtfsCounter, 10942 mSDsluCounter, 10633 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10942 SdHoareTripleChecker+Valid, 12880 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:27,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10942 Valid, 12880 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:11:27,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10040 states. [2022-01-10 12:11:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10040 to 5912. [2022-01-10 12:11:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5912 states, 5906 states have (on average 1.6220792414493734) internal successors, (9580), 5911 states have internal predecessors, (9580), 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 12:11:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5912 states to 5912 states and 9580 transitions. [2022-01-10 12:11:28,294 INFO L78 Accepts]: Start accepts. Automaton has 5912 states and 9580 transitions. Word has length 70 [2022-01-10 12:11:28,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:28,294 INFO L470 AbstractCegarLoop]: Abstraction has 5912 states and 9580 transitions. [2022-01-10 12:11:28,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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 12:11:28,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5912 states and 9580 transitions. [2022-01-10 12:11:28,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:11:28,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:28,298 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] [2022-01-10 12:11:28,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:11:28,299 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:11:28,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:28,299 INFO L85 PathProgramCache]: Analyzing trace with hash -581221828, now seen corresponding path program 1 times [2022-01-10 12:11:28,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:28,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494797842] [2022-01-10 12:11:28,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:28,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:28,411 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 12:11:28,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:28,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494797842] [2022-01-10 12:11:28,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494797842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:28,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:28,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:11:28,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388624524] [2022-01-10 12:11:28,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:28,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:11:28,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:11:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:11:28,412 INFO L87 Difference]: Start difference. First operand 5912 states and 9580 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 12:11:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:29,436 INFO L93 Difference]: Finished difference Result 8461 states and 13658 transitions. [2022-01-10 12:11:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:11:29,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2022-01-10 12:11:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:29,437 INFO L225 Difference]: With dead ends: 8461 [2022-01-10 12:11:29,437 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:11:29,447 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 12:11:29,448 INFO L933 BasicCegarLoop]: 1751 mSDtfsCounter, 1178 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:29,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 3608 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:29,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:11:29,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:11:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 12:11:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:11:29,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2022-01-10 12:11:29,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:29,449 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:11:29,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 12:11:29,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:11:29,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:11:29,451 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-10 12:11:29,451 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-01-10 12:11:29,451 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-01-10 12:11:29,452 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-01-10 12:11:29,452 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-10 12:11:29,452 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-10 12:11:29,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:11:29,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.