/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:07:04,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:07:04,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:07:04,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:07:04,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:07:04,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:07:04,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:07:04,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:07:04,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:07:04,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:07:04,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:07:04,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:07:04,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:07:04,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:07:04,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:07:04,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:07:04,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:07:04,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:07:04,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:07:04,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:07:04,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:07:04,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:07:04,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:07:04,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:07:05,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:07:05,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:07:05,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:07:05,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:07:05,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:07:05,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:07:05,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:07:05,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:07:05,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:07:05,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:07:05,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:07:05,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:07:05,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:07:05,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:07:05,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:07:05,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:07:05,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:07:05,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:07:05,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:07:05,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:07:05,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:07:05,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:07:05,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:07:05,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:07:05,071 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:07:05,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:07:05,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:07:05,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:07:05,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:07:05,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:07:05,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:07:05,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:07:05,072 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:07:05,072 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:07:05,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:07:05,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:07:05,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:07:05,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:07:05,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:07:05,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:07:05,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:07:05,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:07:05,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:07:05,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:07:05,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:07:05,073 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:07:05,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:07:05,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:07:05,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:07:05,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:07:05,074 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:07:05,074 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:07:05,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:07:05,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:07:05,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:07:05,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:07:05,262 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:07:05,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c [2022-01-10 18:07:05,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559e24059/f85b3954ca2d4f3bbaa93dc6cfa1052f/FLAG04d14b5cb [2022-01-10 18:07:05,773 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:07:05,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c [2022-01-10 18:07:05,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559e24059/f85b3954ca2d4f3bbaa93dc6cfa1052f/FLAG04d14b5cb [2022-01-10 18:07:06,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559e24059/f85b3954ca2d4f3bbaa93dc6cfa1052f [2022-01-10 18:07:06,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:07:06,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:07:06,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:07:06,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:07:06,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:07:06,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:06,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de8750e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06, skipping insertion in model container [2022-01-10 18:07:06,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:06,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:07:06,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:07:06,642 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_spec4_product30.cil.c[64112,64125] [2022-01-10 18:07:06,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:06,662 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:07:06,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:07:06,720 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_spec4_product30.cil.c[64112,64125] [2022-01-10 18:07:06,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:06,729 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:07:06,789 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_spec4_product30.cil.c[64112,64125] [2022-01-10 18:07:06,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:06,822 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:07:06,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06 WrapperNode [2022-01-10 18:07:06,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:07:06,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:07:06,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:07:06,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:07:06,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:06,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:06,948 INFO L137 Inliner]: procedures = 133, calls = 218, calls flagged for inlining = 129, calls inlined = 159, statements flattened = 2375 [2022-01-10 18:07:06,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:07:06,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:07:06,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:07:06,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:07:06,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:06,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:06,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:06,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:07,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:07,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:07,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:07,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:07:07,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:07:07,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:07:07,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:07:07,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (1/1) ... [2022-01-10 18:07:07,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:07:07,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:07:07,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:07:07,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:07:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:07:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:07:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:07:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:07:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:07:07,349 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:07:07,350 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:07:08,452 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:07:08,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:07:08,467 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:07:08,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:08 BoogieIcfgContainer [2022-01-10 18:07:08,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:07:08,470 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:07:08,470 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:07:08,471 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:07:08,473 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:08" (1/1) ... [2022-01-10 18:07:08,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:07:08 BasicIcfg [2022-01-10 18:07:08,760 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:07:08,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:07:08,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:07:08,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:07:08,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:07:06" (1/4) ... [2022-01-10 18:07:08,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b489920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:07:08, skipping insertion in model container [2022-01-10 18:07:08,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:06" (2/4) ... [2022-01-10 18:07:08,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b489920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:07:08, skipping insertion in model container [2022-01-10 18:07:08,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:08" (3/4) ... [2022-01-10 18:07:08,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b489920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:07:08, skipping insertion in model container [2022-01-10 18:07:08,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:07:08" (4/4) ... [2022-01-10 18:07:08,768 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product30.cil.cTransformedIcfg [2022-01-10 18:07:08,773 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:07:08,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 18:07:08,818 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:07:08,822 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:07:08,823 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 18:07:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 551 states have (on average 1.693284936479129) internal successors, (933), 553 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:08,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 18:07:08,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:08,867 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] [2022-01-10 18:07:08,868 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash -832518939, now seen corresponding path program 1 times [2022-01-10 18:07:08,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:08,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972704513] [2022-01-10 18:07:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:08,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:09,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:09,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972704513] [2022-01-10 18:07:09,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972704513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:09,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:09,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:07:09,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232857993] [2022-01-10 18:07:09,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:09,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:07:09,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:09,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:07:09,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:07:09,393 INFO L87 Difference]: Start difference. First operand has 554 states, 551 states have (on average 1.693284936479129) internal successors, (933), 553 states have internal predecessors, (933), 0 states have call successors, (0), 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 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:09,457 INFO L93 Difference]: Finished difference Result 847 states and 1406 transitions. [2022-01-10 18:07:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:07:09,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 18:07:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:09,474 INFO L225 Difference]: With dead ends: 847 [2022-01-10 18:07:09,474 INFO L226 Difference]: Without dead ends: 460 [2022-01-10 18:07:09,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:07:09,483 INFO L933 BasicCegarLoop]: 927 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, 927 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:09,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-10 18:07:09,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-01-10 18:07:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.703056768558952) internal successors, (780), 459 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 780 transitions. [2022-01-10 18:07:09,536 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 780 transitions. Word has length 54 [2022-01-10 18:07:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:09,536 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 780 transitions. [2022-01-10 18:07:09,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 780 transitions. [2022-01-10 18:07:09,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 18:07:09,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:09,538 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] [2022-01-10 18:07:09,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:07:09,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:09,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:09,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1795897725, now seen corresponding path program 1 times [2022-01-10 18:07:09,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:09,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565344911] [2022-01-10 18:07:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:09,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:09,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:09,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565344911] [2022-01-10 18:07:09,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565344911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:09,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:09,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:09,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415568161] [2022-01-10 18:07:09,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:09,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:09,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:09,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:09,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:09,706 INFO L87 Difference]: Start difference. First operand 460 states and 780 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:09,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:09,783 INFO L93 Difference]: Finished difference Result 901 states and 1532 transitions. [2022-01-10 18:07:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:09,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 18:07:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:09,788 INFO L225 Difference]: With dead ends: 901 [2022-01-10 18:07:09,788 INFO L226 Difference]: Without dead ends: 460 [2022-01-10 18:07:09,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:09,793 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 755 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:09,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 774 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-10 18:07:09,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-01-10 18:07:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6986899563318778) internal successors, (778), 459 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 778 transitions. [2022-01-10 18:07:09,816 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 778 transitions. Word has length 55 [2022-01-10 18:07:09,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:09,817 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 778 transitions. [2022-01-10 18:07:09,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:09,817 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 778 transitions. [2022-01-10 18:07:09,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:07:09,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:09,818 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 18:07:09,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:07:09,819 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:09,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:09,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1488817085, now seen corresponding path program 1 times [2022-01-10 18:07:09,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:09,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177807496] [2022-01-10 18:07:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:09,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:09,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:09,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177807496] [2022-01-10 18:07:09,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177807496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:09,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:09,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:09,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584722340] [2022-01-10 18:07:09,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:09,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:09,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:09,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:09,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:09,920 INFO L87 Difference]: Start difference. First operand 460 states and 778 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 18:07:10,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:10,088 INFO L93 Difference]: Finished difference Result 2168 states and 3686 transitions. [2022-01-10 18:07:10,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:07:10,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 18:07:10,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:10,096 INFO L225 Difference]: With dead ends: 2168 [2022-01-10 18:07:10,097 INFO L226 Difference]: Without dead ends: 1732 [2022-01-10 18:07:10,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:10,104 INFO L933 BasicCegarLoop]: 1479 mSDtfsCounter, 3673 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3673 SdHoareTripleChecker+Valid, 3685 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:10,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3673 Valid, 3685 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2022-01-10 18:07:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 460. [2022-01-10 18:07:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6965065502183405) internal successors, (777), 459 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 777 transitions. [2022-01-10 18:07:10,132 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 777 transitions. Word has length 57 [2022-01-10 18:07:10,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:10,133 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 777 transitions. [2022-01-10 18:07:10,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 18:07:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 777 transitions. [2022-01-10 18:07:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:07:10,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:10,134 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] [2022-01-10 18:07:10,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:07:10,134 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:10,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:10,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2009562805, now seen corresponding path program 1 times [2022-01-10 18:07:10,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:10,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311710185] [2022-01-10 18:07:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:10,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:10,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:10,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311710185] [2022-01-10 18:07:10,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311710185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:10,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:10,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:10,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812977201] [2022-01-10 18:07:10,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:10,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:10,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:10,209 INFO L87 Difference]: Start difference. First operand 460 states and 777 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:10,245 INFO L93 Difference]: Finished difference Result 905 states and 1532 transitions. [2022-01-10 18:07:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:10,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-01-10 18:07:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:10,248 INFO L225 Difference]: With dead ends: 905 [2022-01-10 18:07:10,248 INFO L226 Difference]: Without dead ends: 474 [2022-01-10 18:07:10,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:10,249 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 756 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:10,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 813 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-01-10 18:07:10,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 460. [2022-01-10 18:07:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6943231441048034) internal successors, (776), 459 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 776 transitions. [2022-01-10 18:07:10,330 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 776 transitions. Word has length 58 [2022-01-10 18:07:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:10,330 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 776 transitions. [2022-01-10 18:07:10,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 776 transitions. [2022-01-10 18:07:10,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:07:10,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:10,331 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 18:07:10,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:07:10,332 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1013177694, now seen corresponding path program 1 times [2022-01-10 18:07:10,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:10,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262485731] [2022-01-10 18:07:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:10,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:10,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:10,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262485731] [2022-01-10 18:07:10,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262485731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:10,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:10,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:10,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531628104] [2022-01-10 18:07:10,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:10,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:10,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:10,408 INFO L87 Difference]: Start difference. First operand 460 states and 776 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 18:07:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:10,530 INFO L93 Difference]: Finished difference Result 1314 states and 2228 transitions. [2022-01-10 18:07:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:10,531 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 18:07:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:10,534 INFO L225 Difference]: With dead ends: 1314 [2022-01-10 18:07:10,534 INFO L226 Difference]: Without dead ends: 888 [2022-01-10 18:07:10,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:10,536 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 3596 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3596 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:10,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3596 Valid, 1584 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-01-10 18:07:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 460. [2022-01-10 18:07:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6899563318777293) internal successors, (774), 459 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 774 transitions. [2022-01-10 18:07:10,561 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 774 transitions. Word has length 59 [2022-01-10 18:07:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:10,562 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 774 transitions. [2022-01-10 18:07:10,562 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 18:07:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 774 transitions. [2022-01-10 18:07:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:07:10,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:10,563 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 18:07:10,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:07:10,563 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:10,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash 227094203, now seen corresponding path program 1 times [2022-01-10 18:07:10,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:10,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163535872] [2022-01-10 18:07:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:10,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:10,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:10,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163535872] [2022-01-10 18:07:10,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163535872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:10,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:10,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:07:10,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007900538] [2022-01-10 18:07:10,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:10,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:07:10,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:07:10,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:07:10,700 INFO L87 Difference]: Start difference. First operand 460 states and 774 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 18:07:11,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:11,082 INFO L93 Difference]: Finished difference Result 2658 states and 4398 transitions. [2022-01-10 18:07:11,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:07:11,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 18:07:11,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:11,091 INFO L225 Difference]: With dead ends: 2658 [2022-01-10 18:07:11,091 INFO L226 Difference]: Without dead ends: 2476 [2022-01-10 18:07:11,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:07:11,093 INFO L933 BasicCegarLoop]: 1085 mSDtfsCounter, 4611 mSDsluCounter, 4330 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 5415 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:11,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4611 Valid, 5415 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:11,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2022-01-10 18:07:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 858. [2022-01-10 18:07:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 856 states have (on average 1.6927570093457944) internal successors, (1449), 857 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1449 transitions. [2022-01-10 18:07:11,155 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1449 transitions. Word has length 61 [2022-01-10 18:07:11,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:11,155 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1449 transitions. [2022-01-10 18:07:11,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 18:07:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1449 transitions. [2022-01-10 18:07:11,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:07:11,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:11,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:11,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:07:11,157 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:11,157 INFO L85 PathProgramCache]: Analyzing trace with hash -766974534, now seen corresponding path program 1 times [2022-01-10 18:07:11,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:11,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660918732] [2022-01-10 18:07:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:11,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:11,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:11,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660918732] [2022-01-10 18:07:11,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660918732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:11,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:11,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:11,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690495968] [2022-01-10 18:07:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:11,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:11,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:11,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:11,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:11,241 INFO L87 Difference]: Start difference. First operand 858 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:11,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:11,359 INFO L93 Difference]: Finished difference Result 1415 states and 2335 transitions. [2022-01-10 18:07:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:11,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 18:07:11,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:11,363 INFO L225 Difference]: With dead ends: 1415 [2022-01-10 18:07:11,363 INFO L226 Difference]: Without dead ends: 1085 [2022-01-10 18:07:11,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:11,365 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 1769 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:11,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 1866 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-01-10 18:07:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 858. [2022-01-10 18:07:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 856 states have (on average 1.6880841121495327) internal successors, (1445), 857 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1445 transitions. [2022-01-10 18:07:11,412 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1445 transitions. Word has length 62 [2022-01-10 18:07:11,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:11,413 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1445 transitions. [2022-01-10 18:07:11,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1445 transitions. [2022-01-10 18:07:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:07:11,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:11,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:11,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:07:11,414 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:11,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:11,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1029274491, now seen corresponding path program 1 times [2022-01-10 18:07:11,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:11,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231319653] [2022-01-10 18:07:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:11,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:11,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:11,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231319653] [2022-01-10 18:07:11,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231319653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:11,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:11,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:11,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619355291] [2022-01-10 18:07:11,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:11,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:11,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:11,493 INFO L87 Difference]: Start difference. First operand 858 states and 1445 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:11,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:11,677 INFO L93 Difference]: Finished difference Result 2451 states and 4164 transitions. [2022-01-10 18:07:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:07:11,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 18:07:11,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:11,683 INFO L225 Difference]: With dead ends: 2451 [2022-01-10 18:07:11,683 INFO L226 Difference]: Without dead ends: 1630 [2022-01-10 18:07:11,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:11,684 INFO L933 BasicCegarLoop]: 1447 mSDtfsCounter, 2253 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2253 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:11,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2253 Valid, 2172 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:11,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2022-01-10 18:07:11,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 858. [2022-01-10 18:07:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 856 states have (on average 1.685747663551402) internal successors, (1443), 857 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1443 transitions. [2022-01-10 18:07:11,753 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1443 transitions. Word has length 62 [2022-01-10 18:07:11,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:11,753 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1443 transitions. [2022-01-10 18:07:11,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:11,753 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1443 transitions. [2022-01-10 18:07:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:07:11,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:11,755 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 18:07:11,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:07:11,755 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:11,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:11,755 INFO L85 PathProgramCache]: Analyzing trace with hash 670212871, now seen corresponding path program 1 times [2022-01-10 18:07:11,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:11,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722888797] [2022-01-10 18:07:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:11,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:11,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:11,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722888797] [2022-01-10 18:07:11,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722888797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:11,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:11,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:11,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487127858] [2022-01-10 18:07:11,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:11,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:07:11,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:11,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:07:11,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:11,863 INFO L87 Difference]: Start difference. First operand 858 states and 1443 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 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 18:07:12,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:12,445 INFO L93 Difference]: Finished difference Result 3346 states and 5364 transitions. [2022-01-10 18:07:12,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:07:12,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 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 18:07:12,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:12,455 INFO L225 Difference]: With dead ends: 3346 [2022-01-10 18:07:12,455 INFO L226 Difference]: Without dead ends: 3058 [2022-01-10 18:07:12,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:07:12,456 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 6523 mSDsluCounter, 5502 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6523 SdHoareTripleChecker+Valid, 6416 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:12,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6523 Valid, 6416 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:07:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2022-01-10 18:07:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 1623. [2022-01-10 18:07:12,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1621 states have (on average 1.6995681677976557) internal successors, (2755), 1622 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:12,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2755 transitions. [2022-01-10 18:07:12,576 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2755 transitions. Word has length 63 [2022-01-10 18:07:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:12,576 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2755 transitions. [2022-01-10 18:07:12,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 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 18:07:12,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2755 transitions. [2022-01-10 18:07:12,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:07:12,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:12,578 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 18:07:12,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:07:12,578 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:12,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:12,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1404187233, now seen corresponding path program 1 times [2022-01-10 18:07:12,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:12,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428969467] [2022-01-10 18:07:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:12,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:12,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:12,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428969467] [2022-01-10 18:07:12,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428969467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:12,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:12,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:12,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351480546] [2022-01-10 18:07:12,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:12,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:07:12,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:07:12,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:12,684 INFO L87 Difference]: Start difference. First operand 1623 states and 2755 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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 18:07:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:13,544 INFO L93 Difference]: Finished difference Result 5850 states and 9462 transitions. [2022-01-10 18:07:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:07:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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 18:07:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:13,560 INFO L225 Difference]: With dead ends: 5850 [2022-01-10 18:07:13,561 INFO L226 Difference]: Without dead ends: 5311 [2022-01-10 18:07:13,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:07:13,563 INFO L933 BasicCegarLoop]: 774 mSDtfsCounter, 6511 mSDsluCounter, 4793 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6511 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:13,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6511 Valid, 5567 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:07:13,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2022-01-10 18:07:13,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 3158. [2022-01-10 18:07:13,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 3156 states have (on average 1.7069074778200253) internal successors, (5387), 3157 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:13,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 5387 transitions. [2022-01-10 18:07:13,840 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 5387 transitions. Word has length 64 [2022-01-10 18:07:13,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:13,840 INFO L470 AbstractCegarLoop]: Abstraction has 3158 states and 5387 transitions. [2022-01-10 18:07:13,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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 18:07:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 5387 transitions. [2022-01-10 18:07:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:07:13,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:13,843 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 18:07:13,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:07:13,843 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:13,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:13,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1383228254, now seen corresponding path program 1 times [2022-01-10 18:07:13,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:13,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301740206] [2022-01-10 18:07:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:13,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:13,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:13,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301740206] [2022-01-10 18:07:13,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301740206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:13,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:13,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:13,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975213166] [2022-01-10 18:07:13,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:13,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:13,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:13,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:13,932 INFO L87 Difference]: Start difference. First operand 3158 states and 5387 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 18:07:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:14,819 INFO L93 Difference]: Finished difference Result 9642 states and 15597 transitions. [2022-01-10 18:07:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:07:14,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 18:07:14,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:14,848 INFO L225 Difference]: With dead ends: 9642 [2022-01-10 18:07:14,848 INFO L226 Difference]: Without dead ends: 8756 [2022-01-10 18:07:14,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:14,852 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 2511 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:14,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2511 Valid, 2919 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:14,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2022-01-10 18:07:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 4378. [2022-01-10 18:07:15,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4378 states, 4376 states have (on average 1.6759597806215722) internal successors, (7334), 4377 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 7334 transitions. [2022-01-10 18:07:15,233 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 7334 transitions. Word has length 64 [2022-01-10 18:07:15,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:15,233 INFO L470 AbstractCegarLoop]: Abstraction has 4378 states and 7334 transitions. [2022-01-10 18:07:15,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 18:07:15,234 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 7334 transitions. [2022-01-10 18:07:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:07:15,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:15,237 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 18:07:15,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:07:15,237 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:15,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:15,237 INFO L85 PathProgramCache]: Analyzing trace with hash -2006265387, now seen corresponding path program 1 times [2022-01-10 18:07:15,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:15,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112475537] [2022-01-10 18:07:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:15,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:15,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:15,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112475537] [2022-01-10 18:07:15,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112475537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:15,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:15,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:15,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172215139] [2022-01-10 18:07:15,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:15,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:07:15,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:15,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:07:15,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:15,336 INFO L87 Difference]: Start difference. First operand 4378 states and 7334 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 18:07:15,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:15,986 INFO L93 Difference]: Finished difference Result 7197 states and 11733 transitions. [2022-01-10 18:07:15,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:07:15,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 18:07:15,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:15,996 INFO L225 Difference]: With dead ends: 7197 [2022-01-10 18:07:15,996 INFO L226 Difference]: Without dead ends: 5413 [2022-01-10 18:07:15,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-10 18:07:16,000 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 2150 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:16,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2150 Valid, 3983 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:16,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2022-01-10 18:07:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 4322. [2022-01-10 18:07:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4320 states have (on average 1.6717592592592592) internal successors, (7222), 4321 states have internal predecessors, (7222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 7222 transitions. [2022-01-10 18:07:16,369 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 7222 transitions. Word has length 65 [2022-01-10 18:07:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:16,370 INFO L470 AbstractCegarLoop]: Abstraction has 4322 states and 7222 transitions. [2022-01-10 18:07:16,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 18:07:16,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 7222 transitions. [2022-01-10 18:07:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:07:16,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:16,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:16,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:07:16,373 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash -781889667, now seen corresponding path program 1 times [2022-01-10 18:07:16,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:16,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735512965] [2022-01-10 18:07:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:16,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:16,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:16,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735512965] [2022-01-10 18:07:16,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735512965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:16,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:16,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:16,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015676358] [2022-01-10 18:07:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:16,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:07:16,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:16,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:07:16,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:16,477 INFO L87 Difference]: Start difference. First operand 4322 states and 7222 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:18,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:18,991 INFO L93 Difference]: Finished difference Result 17616 states and 28129 transitions. [2022-01-10 18:07:18,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 18:07:18,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 18:07:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:19,032 INFO L225 Difference]: With dead ends: 17616 [2022-01-10 18:07:19,033 INFO L226 Difference]: Without dead ends: 17506 [2022-01-10 18:07:19,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 18:07:19,041 INFO L933 BasicCegarLoop]: 1571 mSDtfsCounter, 2850 mSDsluCounter, 6448 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 8019 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:19,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2850 Valid, 8019 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:07:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17506 states. [2022-01-10 18:07:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17506 to 5620. [2022-01-10 18:07:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5620 states, 5618 states have (on average 1.6548593805624778) internal successors, (9297), 5619 states have internal predecessors, (9297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 9297 transitions. [2022-01-10 18:07:19,714 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 9297 transitions. Word has length 66 [2022-01-10 18:07:19,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:19,714 INFO L470 AbstractCegarLoop]: Abstraction has 5620 states and 9297 transitions. [2022-01-10 18:07:19,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:19,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 9297 transitions. [2022-01-10 18:07:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:07:19,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:19,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:19,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:07:19,718 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:19,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:19,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1532173391, now seen corresponding path program 1 times [2022-01-10 18:07:19,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:19,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541480109] [2022-01-10 18:07:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:19,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:19,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:19,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541480109] [2022-01-10 18:07:19,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541480109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:19,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:19,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:07:19,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949892285] [2022-01-10 18:07:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:19,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:07:19,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:07:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:07:19,822 INFO L87 Difference]: Start difference. First operand 5620 states and 9297 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:21,926 INFO L93 Difference]: Finished difference Result 14717 states and 23546 transitions. [2022-01-10 18:07:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:07:21,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:07:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:21,950 INFO L225 Difference]: With dead ends: 14717 [2022-01-10 18:07:21,950 INFO L226 Difference]: Without dead ends: 13385 [2022-01-10 18:07:21,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:07:21,955 INFO L933 BasicCegarLoop]: 800 mSDtfsCounter, 2305 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 3691 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:21,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2305 Valid, 3691 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:21,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13385 states. [2022-01-10 18:07:22,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13385 to 5770. [2022-01-10 18:07:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 5768 states have (on average 1.6501386962552012) internal successors, (9518), 5769 states have internal predecessors, (9518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 9518 transitions. [2022-01-10 18:07:22,620 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 9518 transitions. Word has length 67 [2022-01-10 18:07:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:22,621 INFO L470 AbstractCegarLoop]: Abstraction has 5770 states and 9518 transitions. [2022-01-10 18:07:22,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 9518 transitions. [2022-01-10 18:07:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:07:22,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:22,625 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 18:07:22,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:07:22,626 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:22,626 INFO L85 PathProgramCache]: Analyzing trace with hash 253952276, now seen corresponding path program 1 times [2022-01-10 18:07:22,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:22,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878639437] [2022-01-10 18:07:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:22,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:22,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:22,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878639437] [2022-01-10 18:07:22,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878639437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:22,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:22,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:07:22,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403712932] [2022-01-10 18:07:22,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:22,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:07:22,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:22,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:07:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:07:22,716 INFO L87 Difference]: Start difference. First operand 5770 states and 9518 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 18:07:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:24,923 INFO L93 Difference]: Finished difference Result 14727 states and 23533 transitions. [2022-01-10 18:07:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:07:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 18:07:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:24,947 INFO L225 Difference]: With dead ends: 14727 [2022-01-10 18:07:24,948 INFO L226 Difference]: Without dead ends: 13308 [2022-01-10 18:07:24,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:07:24,953 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 2280 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:24,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2280 Valid, 3699 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:24,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13308 states. [2022-01-10 18:07:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13308 to 5730. [2022-01-10 18:07:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5730 states, 5728 states have (on average 1.6511871508379887) internal successors, (9458), 5729 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 9458 transitions. [2022-01-10 18:07:25,654 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 9458 transitions. Word has length 68 [2022-01-10 18:07:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:25,655 INFO L470 AbstractCegarLoop]: Abstraction has 5730 states and 9458 transitions. [2022-01-10 18:07:25,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 18:07:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 9458 transitions. [2022-01-10 18:07:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:07:25,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:25,658 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 18:07:25,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:07:25,659 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:25,659 INFO L85 PathProgramCache]: Analyzing trace with hash 424973768, now seen corresponding path program 1 times [2022-01-10 18:07:25,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:25,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581647013] [2022-01-10 18:07:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:25,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:25,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:25,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581647013] [2022-01-10 18:07:25,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581647013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:25,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:25,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:07:25,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419395077] [2022-01-10 18:07:25,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:25,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:07:25,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:25,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:07:25,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:07:25,732 INFO L87 Difference]: Start difference. First operand 5730 states and 9458 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 18:07:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:27,189 INFO L93 Difference]: Finished difference Result 11333 states and 18211 transitions. [2022-01-10 18:07:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:07:27,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 18:07:27,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:27,202 INFO L225 Difference]: With dead ends: 11333 [2022-01-10 18:07:27,203 INFO L226 Difference]: Without dead ends: 9723 [2022-01-10 18:07:27,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:07:27,206 INFO L933 BasicCegarLoop]: 961 mSDtfsCounter, 1729 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 4040 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:27,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 4040 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:27,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9723 states. [2022-01-10 18:07:27,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 6053. [2022-01-10 18:07:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6053 states, 6051 states have (on average 1.646504709965295) internal successors, (9963), 6052 states have internal predecessors, (9963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6053 states to 6053 states and 9963 transitions. [2022-01-10 18:07:27,951 INFO L78 Accepts]: Start accepts. Automaton has 6053 states and 9963 transitions. Word has length 68 [2022-01-10 18:07:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:27,951 INFO L470 AbstractCegarLoop]: Abstraction has 6053 states and 9963 transitions. [2022-01-10 18:07:27,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 18:07:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6053 states and 9963 transitions. [2022-01-10 18:07:27,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:07:27,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:27,957 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 18:07:27,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:07:27,958 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:27,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1148496561, now seen corresponding path program 1 times [2022-01-10 18:07:27,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:27,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140094787] [2022-01-10 18:07:27,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:27,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:28,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:28,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140094787] [2022-01-10 18:07:28,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140094787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:28,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:28,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:28,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340853639] [2022-01-10 18:07:28,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:28,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:07:28,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:28,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:07:28,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:07:28,035 INFO L87 Difference]: Start difference. First operand 6053 states and 9963 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 18:07:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:28,978 INFO L93 Difference]: Finished difference Result 9351 states and 15126 transitions. [2022-01-10 18:07:28,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:28,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 18:07:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:28,988 INFO L225 Difference]: With dead ends: 9351 [2022-01-10 18:07:28,988 INFO L226 Difference]: Without dead ends: 6521 [2022-01-10 18:07:28,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:28,993 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 714 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:28,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 2591 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2022-01-10 18:07:29,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 4782. [2022-01-10 18:07:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 4780 states have (on average 1.6543933054393305) internal successors, (7908), 4781 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 7908 transitions. [2022-01-10 18:07:29,583 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 7908 transitions. Word has length 68 [2022-01-10 18:07:29,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:29,583 INFO L470 AbstractCegarLoop]: Abstraction has 4782 states and 7908 transitions. [2022-01-10 18:07:29,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 18:07:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 7908 transitions. [2022-01-10 18:07:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:07:29,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:29,586 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 18:07:29,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:07:29,587 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:29,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:29,587 INFO L85 PathProgramCache]: Analyzing trace with hash 426286254, now seen corresponding path program 1 times [2022-01-10 18:07:29,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:29,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368067944] [2022-01-10 18:07:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:29,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:29,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:29,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368067944] [2022-01-10 18:07:29,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368067944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:29,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:29,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:29,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113712359] [2022-01-10 18:07:29,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:29,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:07:29,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:07:29,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:29,665 INFO L87 Difference]: Start difference. First operand 4782 states and 7908 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 18:07:31,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:31,090 INFO L93 Difference]: Finished difference Result 8844 states and 14228 transitions. [2022-01-10 18:07:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 18:07:31,091 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 18:07:31,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:31,101 INFO L225 Difference]: With dead ends: 8844 [2022-01-10 18:07:31,101 INFO L226 Difference]: Without dead ends: 8289 [2022-01-10 18:07:31,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2022-01-10 18:07:31,103 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 3147 mSDsluCounter, 4883 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3147 SdHoareTripleChecker+Valid, 5835 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:31,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3147 Valid, 5835 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2022-01-10 18:07:31,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 4807. [2022-01-10 18:07:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4807 states, 4805 states have (on average 1.6509885535900104) internal successors, (7933), 4806 states have internal predecessors, (7933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:31,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4807 states to 4807 states and 7933 transitions. [2022-01-10 18:07:31,695 INFO L78 Accepts]: Start accepts. Automaton has 4807 states and 7933 transitions. Word has length 69 [2022-01-10 18:07:31,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:31,695 INFO L470 AbstractCegarLoop]: Abstraction has 4807 states and 7933 transitions. [2022-01-10 18:07:31,695 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 18:07:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4807 states and 7933 transitions. [2022-01-10 18:07:31,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:07:31,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:31,698 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 18:07:31,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:07:31,699 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:31,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:31,699 INFO L85 PathProgramCache]: Analyzing trace with hash 331189397, now seen corresponding path program 1 times [2022-01-10 18:07:31,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:31,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478164632] [2022-01-10 18:07:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:31,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:31,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:31,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478164632] [2022-01-10 18:07:31,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478164632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:31,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:31,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:07:31,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353325443] [2022-01-10 18:07:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:31,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:07:31,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:31,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:07:31,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:07:31,785 INFO L87 Difference]: Start difference. First operand 4807 states and 7933 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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 18:07:33,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:33,029 INFO L93 Difference]: Finished difference Result 9231 states and 14813 transitions. [2022-01-10 18:07:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:07:33,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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 18:07:33,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:33,038 INFO L225 Difference]: With dead ends: 9231 [2022-01-10 18:07:33,038 INFO L226 Difference]: Without dead ends: 7055 [2022-01-10 18:07:33,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:07:33,041 INFO L933 BasicCegarLoop]: 949 mSDtfsCounter, 1622 mSDsluCounter, 3014 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 3963 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:33,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1622 Valid, 3963 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7055 states. [2022-01-10 18:07:33,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7055 to 4560. [2022-01-10 18:07:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4559 states have (on average 1.6556262338232068) internal successors, (7548), 4559 states have internal predecessors, (7548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7548 transitions. [2022-01-10 18:07:33,621 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7548 transitions. Word has length 70 [2022-01-10 18:07:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:33,621 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 7548 transitions. [2022-01-10 18:07:33,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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 18:07:33,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7548 transitions. [2022-01-10 18:07:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 18:07:33,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:33,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:33,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:07:33,627 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:33,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash -82817772, now seen corresponding path program 1 times [2022-01-10 18:07:33,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:33,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507469373] [2022-01-10 18:07:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:33,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:33,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:33,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507469373] [2022-01-10 18:07:33,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507469373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:33,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:33,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:33,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984458450] [2022-01-10 18:07:33,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:33,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:07:33,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:33,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:07:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:07:33,687 INFO L87 Difference]: Start difference. First operand 4560 states and 7548 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:34,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:34,424 INFO L93 Difference]: Finished difference Result 5964 states and 9637 transitions. [2022-01-10 18:07:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:07:34,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 18:07:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:34,431 INFO L225 Difference]: With dead ends: 5964 [2022-01-10 18:07:34,431 INFO L226 Difference]: Without dead ends: 5199 [2022-01-10 18:07:34,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:34,434 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 710 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:34,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 1752 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2022-01-10 18:07:34,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 4560. [2022-01-10 18:07:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4559 states have (on average 1.6551875411274402) internal successors, (7546), 4559 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:35,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7546 transitions. [2022-01-10 18:07:35,000 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7546 transitions. Word has length 113 [2022-01-10 18:07:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:35,001 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 7546 transitions. [2022-01-10 18:07:35,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7546 transitions. [2022-01-10 18:07:35,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 18:07:35,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:35,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:35,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:07:35,006 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:35,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:35,007 INFO L85 PathProgramCache]: Analyzing trace with hash 360793651, now seen corresponding path program 1 times [2022-01-10 18:07:35,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:35,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972002] [2022-01-10 18:07:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:35,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:35,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:35,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972002] [2022-01-10 18:07:35,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:35,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:35,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:35,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852615974] [2022-01-10 18:07:35,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:35,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:35,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:35,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:35,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:35,088 INFO L87 Difference]: Start difference. First operand 4560 states and 7546 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:36,433 INFO L93 Difference]: Finished difference Result 10156 states and 16338 transitions. [2022-01-10 18:07:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:07:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 18:07:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:36,445 INFO L225 Difference]: With dead ends: 10156 [2022-01-10 18:07:36,445 INFO L226 Difference]: Without dead ends: 8377 [2022-01-10 18:07:36,448 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 18:07:36,448 INFO L933 BasicCegarLoop]: 1321 mSDtfsCounter, 1482 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:36,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 4037 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:36,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8377 states. [2022-01-10 18:07:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8377 to 4816. [2022-01-10 18:07:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4816 states, 4815 states have (on average 1.6436137071651091) internal successors, (7914), 4815 states have internal predecessors, (7914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4816 states to 4816 states and 7914 transitions. [2022-01-10 18:07:37,079 INFO L78 Accepts]: Start accepts. Automaton has 4816 states and 7914 transitions. Word has length 113 [2022-01-10 18:07:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:37,079 INFO L470 AbstractCegarLoop]: Abstraction has 4816 states and 7914 transitions. [2022-01-10 18:07:37,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 4816 states and 7914 transitions. [2022-01-10 18:07:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 18:07:37,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:37,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:37,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:07:37,086 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:37,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:37,087 INFO L85 PathProgramCache]: Analyzing trace with hash 436101671, now seen corresponding path program 1 times [2022-01-10 18:07:37,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:37,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200256945] [2022-01-10 18:07:37,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:37,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:37,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:37,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200256945] [2022-01-10 18:07:37,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200256945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:37,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:37,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:37,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022433097] [2022-01-10 18:07:37,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:37,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:37,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:37,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:37,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:37,180 INFO L87 Difference]: Start difference. First operand 4816 states and 7914 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:39,731 INFO L93 Difference]: Finished difference Result 14562 states and 22851 transitions. [2022-01-10 18:07:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:07:39,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-10 18:07:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:39,747 INFO L225 Difference]: With dead ends: 14562 [2022-01-10 18:07:39,747 INFO L226 Difference]: Without dead ends: 13183 [2022-01-10 18:07:39,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:39,750 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 1806 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:39,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1806 Valid, 3062 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13183 states. [2022-01-10 18:07:40,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13183 to 5648. [2022-01-10 18:07:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5648 states, 5647 states have (on average 1.6201522932530548) internal successors, (9149), 5647 states have internal predecessors, (9149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:40,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5648 states to 5648 states and 9149 transitions. [2022-01-10 18:07:40,541 INFO L78 Accepts]: Start accepts. Automaton has 5648 states and 9149 transitions. Word has length 114 [2022-01-10 18:07:40,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:40,541 INFO L470 AbstractCegarLoop]: Abstraction has 5648 states and 9149 transitions. [2022-01-10 18:07:40,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5648 states and 9149 transitions. [2022-01-10 18:07:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 18:07:40,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:40,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:40,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:07:40,548 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash -720686603, now seen corresponding path program 1 times [2022-01-10 18:07:40,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:40,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577368232] [2022-01-10 18:07:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:40,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:40,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:40,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577368232] [2022-01-10 18:07:40,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577368232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:40,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:40,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:40,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568266545] [2022-01-10 18:07:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:40,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:40,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:40,624 INFO L87 Difference]: Start difference. First operand 5648 states and 9149 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:42,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:42,029 INFO L93 Difference]: Finished difference Result 8793 states and 13760 transitions. [2022-01-10 18:07:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:07:42,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-10 18:07:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:42,038 INFO L225 Difference]: With dead ends: 8793 [2022-01-10 18:07:42,039 INFO L226 Difference]: Without dead ends: 7910 [2022-01-10 18:07:42,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:42,040 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 686 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 3332 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:42,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 3332 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7910 states. [2022-01-10 18:07:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7910 to 5680. [2022-01-10 18:07:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 5679 states have (on average 1.6166578622997005) internal successors, (9181), 5679 states have internal predecessors, (9181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 9181 transitions. [2022-01-10 18:07:42,839 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 9181 transitions. Word has length 115 [2022-01-10 18:07:42,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:42,840 INFO L470 AbstractCegarLoop]: Abstraction has 5680 states and 9181 transitions. [2022-01-10 18:07:42,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:42,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 9181 transitions. [2022-01-10 18:07:42,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 18:07:42,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:42,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:42,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:07:42,846 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:42,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:42,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1950475947, now seen corresponding path program 1 times [2022-01-10 18:07:42,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:42,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948644366] [2022-01-10 18:07:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:42,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:42,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:42,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948644366] [2022-01-10 18:07:42,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948644366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:42,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:42,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:07:42,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303739255] [2022-01-10 18:07:42,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:42,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:07:42,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:42,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:07:42,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:07:42,964 INFO L87 Difference]: Start difference. First operand 5680 states and 9181 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:43,882 INFO L93 Difference]: Finished difference Result 7763 states and 12382 transitions. [2022-01-10 18:07:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 18:07:43,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-10 18:07:43,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:43,889 INFO L225 Difference]: With dead ends: 7763 [2022-01-10 18:07:43,890 INFO L226 Difference]: Without dead ends: 5712 [2022-01-10 18:07:43,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2022-01-10 18:07:43,893 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 1882 mSDsluCounter, 4096 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 4832 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:43,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 4832 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5712 states. [2022-01-10 18:07:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5712 to 5680. [2022-01-10 18:07:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 5679 states have (on average 1.6082056700123262) internal successors, (9133), 5679 states have internal predecessors, (9133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 9133 transitions. [2022-01-10 18:07:44,727 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 9133 transitions. Word has length 115 [2022-01-10 18:07:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:44,727 INFO L470 AbstractCegarLoop]: Abstraction has 5680 states and 9133 transitions. [2022-01-10 18:07:44,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 9133 transitions. [2022-01-10 18:07:44,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 18:07:44,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:44,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:44,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 18:07:44,734 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:44,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:44,734 INFO L85 PathProgramCache]: Analyzing trace with hash -245981561, now seen corresponding path program 1 times [2022-01-10 18:07:44,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:44,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942991023] [2022-01-10 18:07:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:44,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:44,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:44,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942991023] [2022-01-10 18:07:44,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942991023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:44,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:44,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:44,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548306415] [2022-01-10 18:07:44,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:44,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:07:44,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:44,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:07:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:07:44,814 INFO L87 Difference]: Start difference. First operand 5680 states and 9133 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:47,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:47,121 INFO L93 Difference]: Finished difference Result 14143 states and 21623 transitions. [2022-01-10 18:07:47,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:47,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-01-10 18:07:47,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:47,133 INFO L225 Difference]: With dead ends: 14143 [2022-01-10 18:07:47,134 INFO L226 Difference]: Without dead ends: 10911 [2022-01-10 18:07:47,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:47,137 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 657 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:47,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 2379 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10911 states. [2022-01-10 18:07:48,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10911 to 5740. [2022-01-10 18:07:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5740 states, 5739 states have (on average 1.6018470116745078) internal successors, (9193), 5739 states have internal predecessors, (9193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5740 states to 5740 states and 9193 transitions. [2022-01-10 18:07:48,025 INFO L78 Accepts]: Start accepts. Automaton has 5740 states and 9193 transitions. Word has length 118 [2022-01-10 18:07:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:48,026 INFO L470 AbstractCegarLoop]: Abstraction has 5740 states and 9193 transitions. [2022-01-10 18:07:48,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5740 states and 9193 transitions. [2022-01-10 18:07:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 18:07:48,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:48,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:48,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 18:07:48,032 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:48,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash -19540530, now seen corresponding path program 1 times [2022-01-10 18:07:48,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:48,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988652447] [2022-01-10 18:07:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:48,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:48,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:48,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988652447] [2022-01-10 18:07:48,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988652447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:48,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:48,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:48,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987175812] [2022-01-10 18:07:48,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:48,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:48,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:48,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:48,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:48,112 INFO L87 Difference]: Start difference. First operand 5740 states and 9193 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:49,097 INFO L93 Difference]: Finished difference Result 6377 states and 10068 transitions. [2022-01-10 18:07:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:49,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-01-10 18:07:49,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:49,103 INFO L225 Difference]: With dead ends: 6377 [2022-01-10 18:07:49,103 INFO L226 Difference]: Without dead ends: 5740 [2022-01-10 18:07:49,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:49,105 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 581 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:49,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 2362 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:49,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2022-01-10 18:07:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5740. [2022-01-10 18:07:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5740 states, 5739 states have (on average 1.5990590695243074) internal successors, (9177), 5739 states have internal predecessors, (9177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5740 states to 5740 states and 9177 transitions. [2022-01-10 18:07:49,942 INFO L78 Accepts]: Start accepts. Automaton has 5740 states and 9177 transitions. Word has length 118 [2022-01-10 18:07:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:49,942 INFO L470 AbstractCegarLoop]: Abstraction has 5740 states and 9177 transitions. [2022-01-10 18:07:49,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5740 states and 9177 transitions. [2022-01-10 18:07:49,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 18:07:49,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:49,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:49,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 18:07:49,949 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:49,949 INFO L85 PathProgramCache]: Analyzing trace with hash 38509939, now seen corresponding path program 1 times [2022-01-10 18:07:49,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:49,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645444751] [2022-01-10 18:07:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:49,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:50,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:50,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645444751] [2022-01-10 18:07:50,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645444751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:50,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:50,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:50,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94916054] [2022-01-10 18:07:50,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:50,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:07:50,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:50,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:07:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:50,101 INFO L87 Difference]: Start difference. First operand 5740 states and 9177 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:52,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:52,872 INFO L93 Difference]: Finished difference Result 14398 states and 22337 transitions. [2022-01-10 18:07:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:07:52,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-01-10 18:07:52,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:52,887 INFO L225 Difference]: With dead ends: 14398 [2022-01-10 18:07:52,887 INFO L226 Difference]: Without dead ends: 12209 [2022-01-10 18:07:52,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:07:52,892 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 3676 mSDsluCounter, 3969 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3676 SdHoareTripleChecker+Valid, 4916 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:52,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3676 Valid, 4916 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12209 states. [2022-01-10 18:07:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12209 to 5804. [2022-01-10 18:07:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5804 states, 5803 states have (on average 1.5924521799069447) internal successors, (9241), 5803 states have internal predecessors, (9241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 9241 transitions. [2022-01-10 18:07:53,992 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 9241 transitions. Word has length 123 [2022-01-10 18:07:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:53,993 INFO L470 AbstractCegarLoop]: Abstraction has 5804 states and 9241 transitions. [2022-01-10 18:07:53,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 9241 transitions. [2022-01-10 18:07:53,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 18:07:53,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:53,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:53,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 18:07:53,999 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:54,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:54,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2005472230, now seen corresponding path program 1 times [2022-01-10 18:07:54,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:54,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673002413] [2022-01-10 18:07:54,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:54,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:54,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:54,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673002413] [2022-01-10 18:07:54,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673002413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:54,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:54,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:07:54,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299825016] [2022-01-10 18:07:54,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:54,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:07:54,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:54,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:07:54,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:07:54,127 INFO L87 Difference]: Start difference. First operand 5804 states and 9241 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:59,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:59,668 INFO L93 Difference]: Finished difference Result 30057 states and 47419 transitions. [2022-01-10 18:07:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:07:59,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-10 18:07:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:59,705 INFO L225 Difference]: With dead ends: 30057 [2022-01-10 18:07:59,705 INFO L226 Difference]: Without dead ends: 28476 [2022-01-10 18:07:59,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:07:59,713 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 3744 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 4340 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:59,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3744 Valid, 4340 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28476 states. [2022-01-10 18:08:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28476 to 9289. [2022-01-10 18:08:01,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9289 states, 9288 states have (on average 1.6116494401378123) internal successors, (14969), 9288 states have internal predecessors, (14969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9289 states to 9289 states and 14969 transitions. [2022-01-10 18:08:01,128 INFO L78 Accepts]: Start accepts. Automaton has 9289 states and 14969 transitions. Word has length 124 [2022-01-10 18:08:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:01,129 INFO L470 AbstractCegarLoop]: Abstraction has 9289 states and 14969 transitions. [2022-01-10 18:08:01,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9289 states and 14969 transitions. [2022-01-10 18:08:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 18:08:01,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:01,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:01,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 18:08:01,139 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:08:01,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2004478140, now seen corresponding path program 1 times [2022-01-10 18:08:01,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:01,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113654440] [2022-01-10 18:08:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:01,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:08:01,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:01,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113654440] [2022-01-10 18:08:01,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113654440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:01,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:01,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:08:01,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641715189] [2022-01-10 18:08:01,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:01,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:08:01,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:08:01,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:08:01,235 INFO L87 Difference]: Start difference. First operand 9289 states and 14969 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:02,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:02,709 INFO L93 Difference]: Finished difference Result 14354 states and 22601 transitions. [2022-01-10 18:08:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 18:08:02,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-10 18:08:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:02,722 INFO L225 Difference]: With dead ends: 14354 [2022-01-10 18:08:02,722 INFO L226 Difference]: Without dead ends: 9327 [2022-01-10 18:08:02,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2022-01-10 18:08:02,729 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 1899 mSDsluCounter, 3553 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:02,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1899 Valid, 4290 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:08:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9327 states. [2022-01-10 18:08:03,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9327 to 8861. [2022-01-10 18:08:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8861 states, 8860 states have (on average 1.6064334085778782) internal successors, (14233), 8860 states have internal predecessors, (14233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8861 states to 8861 states and 14233 transitions. [2022-01-10 18:08:03,982 INFO L78 Accepts]: Start accepts. Automaton has 8861 states and 14233 transitions. Word has length 124 [2022-01-10 18:08:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:03,983 INFO L470 AbstractCegarLoop]: Abstraction has 8861 states and 14233 transitions. [2022-01-10 18:08:03,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 8861 states and 14233 transitions. [2022-01-10 18:08:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 18:08:04,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:04,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:04,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 18:08:04,026 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:08:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1039558321, now seen corresponding path program 1 times [2022-01-10 18:08:04,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:04,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547713708] [2022-01-10 18:08:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:04,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:08:04,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:04,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547713708] [2022-01-10 18:08:04,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547713708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:04,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:04,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:08:04,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725612879] [2022-01-10 18:08:04,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:04,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:08:04,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:08:04,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:08:04,124 INFO L87 Difference]: Start difference. First operand 8861 states and 14233 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:05,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:05,956 INFO L93 Difference]: Finished difference Result 12665 states and 20033 transitions. [2022-01-10 18:08:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 18:08:05,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-10 18:08:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:05,967 INFO L225 Difference]: With dead ends: 12665 [2022-01-10 18:08:05,968 INFO L226 Difference]: Without dead ends: 10476 [2022-01-10 18:08:05,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-10 18:08:05,971 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 2864 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2864 SdHoareTripleChecker+Valid, 3537 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:05,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2864 Valid, 3537 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:08:05,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10476 states. [2022-01-10 18:08:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10476 to 8829. [2022-01-10 18:08:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8829 states, 8828 states have (on average 1.6050067965564114) internal successors, (14169), 8828 states have internal predecessors, (14169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8829 states to 8829 states and 14169 transitions. [2022-01-10 18:08:07,298 INFO L78 Accepts]: Start accepts. Automaton has 8829 states and 14169 transitions. Word has length 125 [2022-01-10 18:08:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:07,298 INFO L470 AbstractCegarLoop]: Abstraction has 8829 states and 14169 transitions. [2022-01-10 18:08:07,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 8829 states and 14169 transitions. [2022-01-10 18:08:07,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 18:08:07,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:07,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:07,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 18:08:07,309 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:08:07,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash -938646354, now seen corresponding path program 1 times [2022-01-10 18:08:07,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:07,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507621975] [2022-01-10 18:08:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:07,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:08:07,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:07,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507621975] [2022-01-10 18:08:07,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507621975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:07,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:07,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:08:07,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210002900] [2022-01-10 18:08:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:07,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:08:07,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:08:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:08:07,398 INFO L87 Difference]: Start difference. First operand 8829 states and 14169 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:10,046 INFO L93 Difference]: Finished difference Result 18369 states and 29331 transitions. [2022-01-10 18:08:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:08:10,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-10 18:08:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:10,072 INFO L225 Difference]: With dead ends: 18369 [2022-01-10 18:08:10,073 INFO L226 Difference]: Without dead ends: 17572 [2022-01-10 18:08:10,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:08:10,079 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 673 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:10,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 2957 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:08:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17572 states. [2022-01-10 18:08:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17572 to 16743. [2022-01-10 18:08:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16743 states, 16742 states have (on average 1.6158762393979214) internal successors, (27053), 16742 states have internal predecessors, (27053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16743 states to 16743 states and 27053 transitions. [2022-01-10 18:08:12,398 INFO L78 Accepts]: Start accepts. Automaton has 16743 states and 27053 transitions. Word has length 125 [2022-01-10 18:08:12,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:12,398 INFO L470 AbstractCegarLoop]: Abstraction has 16743 states and 27053 transitions. [2022-01-10 18:08:12,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 16743 states and 27053 transitions. [2022-01-10 18:08:12,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 18:08:12,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:12,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:12,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 18:08:12,421 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:08:12,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash 102948823, now seen corresponding path program 1 times [2022-01-10 18:08:12,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:12,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198807917] [2022-01-10 18:08:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:12,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:08:12,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:12,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198807917] [2022-01-10 18:08:12,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198807917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:12,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:12,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:08:12,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730149769] [2022-01-10 18:08:12,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:12,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:08:12,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:12,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:08:12,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:08:12,514 INFO L87 Difference]: Start difference. First operand 16743 states and 27053 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)