/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:20:01,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:20:01,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:20:01,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:20:01,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:20:01,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:20:01,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:20:01,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:20:01,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:20:01,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:20:01,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:20:01,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:20:01,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:20:01,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:20:01,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:20:01,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:20:01,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:20:01,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:20:01,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:20:01,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:20:01,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:20:01,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:20:01,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:20:01,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:20:01,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:20:01,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:20:01,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:20:01,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:20:01,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:20:01,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:20:01,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:20:01,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:20:01,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:20:01,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:20:01,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:20:01,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:20:01,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:20:01,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:20:01,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:20:01,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:20:01,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:20:01,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:20:01,151 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:20:01,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:20:01,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:20:01,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:20:01,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:20:01,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:20:01,152 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:20:01,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:20:01,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:20:01,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:20:01,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:20:01,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:20:01,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:20:01,153 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:20:01,153 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:20:01,153 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:20:01,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:20:01,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:20:01,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:20:01,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:20:01,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:20:01,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:20:01,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:20:01,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:20:01,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:20:01,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:20:01,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:20:01,154 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:20:01,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:20:01,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:20:01,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:20:01,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:20:01,155 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:20:01,156 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:20:01,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:20:01,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:20:01,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:20:01,383 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:20:01,384 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:20:01,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product16.cil.c [2022-01-10 12:20:01,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c67e18c7a/2102ac158ece4f229b8b6135b84ebb27/FLAGec3640b8e [2022-01-10 12:20:01,886 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:20:01,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product16.cil.c [2022-01-10 12:20:01,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c67e18c7a/2102ac158ece4f229b8b6135b84ebb27/FLAGec3640b8e [2022-01-10 12:20:02,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c67e18c7a/2102ac158ece4f229b8b6135b84ebb27 [2022-01-10 12:20:02,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:20:02,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:20:02,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:20:02,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:20:02,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:20:02,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:02,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1c1820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02, skipping insertion in model container [2022-01-10 12:20:02,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:02,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:20:02,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:20:02,708 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_spec8_product16.cil.c[51682,51695] [2022-01-10 12:20:02,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:20:02,748 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:20:02,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:20:02,810 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_spec8_product16.cil.c[51682,51695] [2022-01-10 12:20:02,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:20:02,844 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:20:02,914 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_spec8_product16.cil.c[51682,51695] [2022-01-10 12:20:02,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:20:02,960 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:20:02,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02 WrapperNode [2022-01-10 12:20:02,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:20:02,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:20:02,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:20:02,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:20:02,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:03,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:03,072 INFO L137 Inliner]: procedures = 128, calls = 201, calls flagged for inlining = 111, calls inlined = 147, statements flattened = 2180 [2022-01-10 12:20:03,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:20:03,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:20:03,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:20:03,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:20:03,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:03,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:03,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:03,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:03,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:03,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:03,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:03,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:20:03,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:20:03,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:20:03,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:20:03,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (1/1) ... [2022-01-10 12:20:03,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:20:03,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:20:03,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:20:03,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:20:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:20:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:20:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:20:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:20:03,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:20:03,450 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:20:03,451 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:20:04,420 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:20:04,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:20:04,427 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:20:04,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:20:04 BoogieIcfgContainer [2022-01-10 12:20:04,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:20:04,429 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:20:04,430 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:20:04,430 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:20:04,433 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:20:04" (1/1) ... [2022-01-10 12:20:04,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:20:04 BasicIcfg [2022-01-10 12:20:04,831 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:20:04,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:20:04,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:20:04,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:20:04,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:20:02" (1/4) ... [2022-01-10 12:20:04,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:20:04, skipping insertion in model container [2022-01-10 12:20:04,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:02" (2/4) ... [2022-01-10 12:20:04,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:20:04, skipping insertion in model container [2022-01-10 12:20:04,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:20:04" (3/4) ... [2022-01-10 12:20:04,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:20:04, skipping insertion in model container [2022-01-10 12:20:04,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:20:04" (4/4) ... [2022-01-10 12:20:04,838 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product16.cil.cTransformedIcfg [2022-01-10 12:20:04,842 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:20:04,842 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:20:04,887 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:20:04,893 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:20:04,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:20:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 492 states, 489 states have (on average 1.6830265848670756) internal successors, (823), 491 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 12:20:04,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:04,932 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] [2022-01-10 12:20:04,933 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:04,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1885228515, now seen corresponding path program 1 times [2022-01-10 12:20:04,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:04,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702541553] [2022-01-10 12:20:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:04,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:05,178 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 12:20:05,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:05,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702541553] [2022-01-10 12:20:05,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702541553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:05,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:05,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:20:05,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550696128] [2022-01-10 12:20:05,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:05,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:20:05,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:05,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:20:05,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:20:05,205 INFO L87 Difference]: Start difference. First operand has 492 states, 489 states have (on average 1.6830265848670756) internal successors, (823), 491 states have internal predecessors, (823), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:05,238 INFO L93 Difference]: Finished difference Result 723 states and 1186 transitions. [2022-01-10 12:20:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:20:05,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 12:20:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:05,249 INFO L225 Difference]: With dead ends: 723 [2022-01-10 12:20:05,249 INFO L226 Difference]: Without dead ends: 413 [2022-01-10 12:20:05,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:20:05,254 INFO L933 BasicCegarLoop]: 817 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, 817 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:05,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-10 12:20:05,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-01-10 12:20:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 411 states have (on average 1.6982968369829683) internal successors, (698), 412 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 698 transitions. [2022-01-10 12:20:05,295 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 698 transitions. Word has length 48 [2022-01-10 12:20:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:05,295 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 698 transitions. [2022-01-10 12:20:05,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 698 transitions. [2022-01-10 12:20:05,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 12:20:05,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:05,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:05,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:20:05,298 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:05,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash 708944739, now seen corresponding path program 1 times [2022-01-10 12:20:05,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:05,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600602033] [2022-01-10 12:20:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:05,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:05,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:05,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600602033] [2022-01-10 12:20:05,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600602033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:05,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:05,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:20:05,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524937676] [2022-01-10 12:20:05,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:05,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:20:05,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:20:05,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:05,403 INFO L87 Difference]: Start difference. First operand 413 states and 698 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:05,428 INFO L93 Difference]: Finished difference Result 524 states and 870 transitions. [2022-01-10 12:20:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:20:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 12:20:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:05,430 INFO L225 Difference]: With dead ends: 524 [2022-01-10 12:20:05,430 INFO L226 Difference]: Without dead ends: 407 [2022-01-10 12:20:05,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:05,432 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 483 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:05,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 848 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-10 12:20:05,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2022-01-10 12:20:05,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.6970443349753694) internal successors, (689), 406 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 689 transitions. [2022-01-10 12:20:05,446 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 689 transitions. Word has length 49 [2022-01-10 12:20:05,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:05,447 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 689 transitions. [2022-01-10 12:20:05,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,447 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 689 transitions. [2022-01-10 12:20:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:20:05,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:05,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:05,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:20:05,449 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:05,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash -47964062, now seen corresponding path program 1 times [2022-01-10 12:20:05,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:05,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424358923] [2022-01-10 12:20:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:05,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:05,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:05,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424358923] [2022-01-10 12:20:05,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424358923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:05,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:05,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:20:05,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314634303] [2022-01-10 12:20:05,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:05,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:20:05,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:05,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:20:05,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:05,636 INFO L87 Difference]: Start difference. First operand 407 states and 689 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:05,717 INFO L93 Difference]: Finished difference Result 795 states and 1350 transitions. [2022-01-10 12:20:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:20:05,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 12:20:05,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:05,721 INFO L225 Difference]: With dead ends: 795 [2022-01-10 12:20:05,722 INFO L226 Difference]: Without dead ends: 407 [2022-01-10 12:20:05,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:05,729 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 664 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:05,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 683 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:05,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-10 12:20:05,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2022-01-10 12:20:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.6921182266009853) internal successors, (687), 406 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 687 transitions. [2022-01-10 12:20:05,761 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 687 transitions. Word has length 86 [2022-01-10 12:20:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:05,762 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 687 transitions. [2022-01-10 12:20:05,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 687 transitions. [2022-01-10 12:20:05,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 12:20:05,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:05,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:05,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:20:05,766 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:05,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash -497310942, now seen corresponding path program 1 times [2022-01-10 12:20:05,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:05,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472488597] [2022-01-10 12:20:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:05,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:05,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:05,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472488597] [2022-01-10 12:20:05,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472488597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:05,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:05,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:20:05,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157615091] [2022-01-10 12:20:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:05,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:05,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:05,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:05,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:05,906 INFO L87 Difference]: Start difference. First operand 407 states and 687 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:06,046 INFO L93 Difference]: Finished difference Result 1903 states and 3231 transitions. [2022-01-10 12:20:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:20:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 12:20:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:06,053 INFO L225 Difference]: With dead ends: 1903 [2022-01-10 12:20:06,053 INFO L226 Difference]: Without dead ends: 1520 [2022-01-10 12:20:06,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:20:06,055 INFO L933 BasicCegarLoop]: 1297 mSDtfsCounter, 3218 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3218 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:06,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3218 Valid, 3230 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-01-10 12:20:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 407. [2022-01-10 12:20:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.6896551724137931) internal successors, (686), 406 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 686 transitions. [2022-01-10 12:20:06,075 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 686 transitions. Word has length 88 [2022-01-10 12:20:06,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:06,075 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 686 transitions. [2022-01-10 12:20:06,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 686 transitions. [2022-01-10 12:20:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 12:20:06,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:06,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:06,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:20:06,077 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:06,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:06,077 INFO L85 PathProgramCache]: Analyzing trace with hash 453378748, now seen corresponding path program 1 times [2022-01-10 12:20:06,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:06,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322608885] [2022-01-10 12:20:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:06,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:06,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:06,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322608885] [2022-01-10 12:20:06,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322608885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:06,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:06,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:20:06,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657730562] [2022-01-10 12:20:06,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:06,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:20:06,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:06,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:20:06,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:06,184 INFO L87 Difference]: Start difference. First operand 407 states and 686 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:06,217 INFO L93 Difference]: Finished difference Result 799 states and 1350 transitions. [2022-01-10 12:20:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:20:06,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-10 12:20:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:06,219 INFO L225 Difference]: With dead ends: 799 [2022-01-10 12:20:06,219 INFO L226 Difference]: Without dead ends: 421 [2022-01-10 12:20:06,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:06,220 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 665 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:06,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 722 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-10 12:20:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 407. [2022-01-10 12:20:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.687192118226601) internal successors, (685), 406 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 685 transitions. [2022-01-10 12:20:06,237 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 685 transitions. Word has length 89 [2022-01-10 12:20:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:06,237 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 685 transitions. [2022-01-10 12:20:06,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 685 transitions. [2022-01-10 12:20:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 12:20:06,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:06,239 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] [2022-01-10 12:20:06,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:20:06,239 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:06,239 INFO L85 PathProgramCache]: Analyzing trace with hash -460047775, now seen corresponding path program 1 times [2022-01-10 12:20:06,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:06,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001335186] [2022-01-10 12:20:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:06,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:06,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001335186] [2022-01-10 12:20:06,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001335186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:06,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:06,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:20:06,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111523920] [2022-01-10 12:20:06,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:06,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:06,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:06,317 INFO L87 Difference]: Start difference. First operand 407 states and 685 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:06,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:06,425 INFO L93 Difference]: Finished difference Result 1155 states and 1955 transitions. [2022-01-10 12:20:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:20:06,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 12:20:06,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:06,428 INFO L225 Difference]: With dead ends: 1155 [2022-01-10 12:20:06,428 INFO L226 Difference]: Without dead ends: 782 [2022-01-10 12:20:06,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:20:06,429 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 3141 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3141 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:06,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3141 Valid, 1402 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-01-10 12:20:06,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 407. [2022-01-10 12:20:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.6822660098522169) internal successors, (683), 406 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 683 transitions. [2022-01-10 12:20:06,449 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 683 transitions. Word has length 90 [2022-01-10 12:20:06,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:06,450 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 683 transitions. [2022-01-10 12:20:06,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 683 transitions. [2022-01-10 12:20:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 12:20:06,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:06,451 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] [2022-01-10 12:20:06,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:20:06,451 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:06,451 INFO L85 PathProgramCache]: Analyzing trace with hash 467245668, now seen corresponding path program 1 times [2022-01-10 12:20:06,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:06,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708388291] [2022-01-10 12:20:06,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:06,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:06,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:06,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708388291] [2022-01-10 12:20:06,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708388291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:06,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:06,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:20:06,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843028442] [2022-01-10 12:20:06,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:06,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:20:06,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:06,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:20:06,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:20:06,578 INFO L87 Difference]: Start difference. First operand 407 states and 683 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:07,014 INFO L93 Difference]: Finished difference Result 1539 states and 2471 transitions. [2022-01-10 12:20:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:20:07,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 12:20:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:07,018 INFO L225 Difference]: With dead ends: 1539 [2022-01-10 12:20:07,019 INFO L226 Difference]: Without dead ends: 1411 [2022-01-10 12:20:07,020 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 12:20:07,022 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 3698 mSDsluCounter, 5638 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3698 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:07,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3698 Valid, 6494 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:20:07,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-01-10 12:20:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 748. [2022-01-10 12:20:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.6974564926372155) internal successors, (1268), 747 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1268 transitions. [2022-01-10 12:20:07,106 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1268 transitions. Word has length 92 [2022-01-10 12:20:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:07,106 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 1268 transitions. [2022-01-10 12:20:07,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1268 transitions. [2022-01-10 12:20:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 12:20:07,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:07,108 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] [2022-01-10 12:20:07,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:20:07,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:07,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:07,109 INFO L85 PathProgramCache]: Analyzing trace with hash 20933151, now seen corresponding path program 1 times [2022-01-10 12:20:07,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:07,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674175517] [2022-01-10 12:20:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:07,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:07,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:07,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674175517] [2022-01-10 12:20:07,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674175517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:07,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:07,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:07,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059860901] [2022-01-10 12:20:07,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:07,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:20:07,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:07,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:20:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:20:07,207 INFO L87 Difference]: Start difference. First operand 748 states and 1268 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:07,287 INFO L93 Difference]: Finished difference Result 975 states and 1614 transitions. [2022-01-10 12:20:07,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:20:07,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 12:20:07,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:07,290 INFO L225 Difference]: With dead ends: 975 [2022-01-10 12:20:07,291 INFO L226 Difference]: Without dead ends: 833 [2022-01-10 12:20:07,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:07,292 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 558 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1686 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 12:20:07,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 1686 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:07,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-01-10 12:20:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 748. [2022-01-10 12:20:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.6961178045515395) internal successors, (1267), 747 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1267 transitions. [2022-01-10 12:20:07,350 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1267 transitions. Word has length 93 [2022-01-10 12:20:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:07,350 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 1267 transitions. [2022-01-10 12:20:07,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1267 transitions. [2022-01-10 12:20:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 12:20:07,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:07,352 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] [2022-01-10 12:20:07,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:20:07,352 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash 41270526, now seen corresponding path program 1 times [2022-01-10 12:20:07,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:07,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151971597] [2022-01-10 12:20:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:07,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:07,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:07,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151971597] [2022-01-10 12:20:07,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151971597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:07,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:07,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:07,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064563245] [2022-01-10 12:20:07,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:07,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:07,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:07,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:07,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:07,452 INFO L87 Difference]: Start difference. First operand 748 states and 1267 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:07,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:07,790 INFO L93 Difference]: Finished difference Result 1907 states and 3015 transitions. [2022-01-10 12:20:07,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:07,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 12:20:07,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:07,796 INFO L225 Difference]: With dead ends: 1907 [2022-01-10 12:20:07,796 INFO L226 Difference]: Without dead ends: 1261 [2022-01-10 12:20:07,797 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 12:20:07,799 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 2296 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:07,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2296 Valid, 2069 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2022-01-10 12:20:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 778. [2022-01-10 12:20:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.6846846846846846) internal successors, (1309), 777 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1309 transitions. [2022-01-10 12:20:07,858 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1309 transitions. Word has length 93 [2022-01-10 12:20:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:07,859 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1309 transitions. [2022-01-10 12:20:07,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:07,859 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1309 transitions. [2022-01-10 12:20:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 12:20:07,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:07,863 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] [2022-01-10 12:20:07,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:20:07,863 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:07,863 INFO L85 PathProgramCache]: Analyzing trace with hash -647092049, now seen corresponding path program 1 times [2022-01-10 12:20:07,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:07,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013496533] [2022-01-10 12:20:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:07,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:07,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:07,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013496533] [2022-01-10 12:20:07,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013496533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:07,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:07,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:20:07,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72882446] [2022-01-10 12:20:07,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:07,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:20:07,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:07,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:20:07,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:20:07,999 INFO L87 Difference]: Start difference. First operand 778 states and 1309 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:08,203 INFO L93 Difference]: Finished difference Result 1108 states and 1805 transitions. [2022-01-10 12:20:08,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:20:08,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-01-10 12:20:08,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:08,206 INFO L225 Difference]: With dead ends: 1108 [2022-01-10 12:20:08,207 INFO L226 Difference]: Without dead ends: 895 [2022-01-10 12:20:08,207 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 12:20:08,208 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 1663 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 3740 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:08,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 3740 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:08,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-01-10 12:20:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 744. [2022-01-10 12:20:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 1.6864064602960969) internal successors, (1253), 743 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1253 transitions. [2022-01-10 12:20:08,268 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1253 transitions. Word has length 94 [2022-01-10 12:20:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:08,268 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1253 transitions. [2022-01-10 12:20:08,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1253 transitions. [2022-01-10 12:20:08,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 12:20:08,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:08,270 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] [2022-01-10 12:20:08,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:20:08,270 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:08,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:08,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1487015647, now seen corresponding path program 1 times [2022-01-10 12:20:08,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:08,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884444595] [2022-01-10 12:20:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:08,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:08,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:08,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884444595] [2022-01-10 12:20:08,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884444595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:08,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:08,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:08,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968399329] [2022-01-10 12:20:08,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:08,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:08,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:08,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:08,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:08,396 INFO L87 Difference]: Start difference. First operand 744 states and 1253 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:08,560 INFO L93 Difference]: Finished difference Result 1740 states and 2884 transitions. [2022-01-10 12:20:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:08,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-10 12:20:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:08,579 INFO L225 Difference]: With dead ends: 1740 [2022-01-10 12:20:08,579 INFO L226 Difference]: Without dead ends: 1515 [2022-01-10 12:20:08,582 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 12:20:08,582 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 738 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:08,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 2791 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:08,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-01-10 12:20:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1417. [2022-01-10 12:20:08,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 1.6843220338983051) internal successors, (2385), 1416 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2385 transitions. [2022-01-10 12:20:08,672 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2385 transitions. Word has length 97 [2022-01-10 12:20:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:08,672 INFO L470 AbstractCegarLoop]: Abstraction has 1417 states and 2385 transitions. [2022-01-10 12:20:08,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2385 transitions. [2022-01-10 12:20:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:20:08,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:08,675 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] [2022-01-10 12:20:08,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:20:08,675 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:08,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:08,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1537044583, now seen corresponding path program 1 times [2022-01-10 12:20:08,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:08,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284219259] [2022-01-10 12:20:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:08,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:08,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:08,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284219259] [2022-01-10 12:20:08,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284219259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:08,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:08,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:20:08,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967207192] [2022-01-10 12:20:08,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:08,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:20:08,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:08,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:20:08,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:20:08,781 INFO L87 Difference]: Start difference. First operand 1417 states and 2385 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:09,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:09,547 INFO L93 Difference]: Finished difference Result 4894 states and 7763 transitions. [2022-01-10 12:20:09,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:20:09,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:20:09,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:09,560 INFO L225 Difference]: With dead ends: 4894 [2022-01-10 12:20:09,560 INFO L226 Difference]: Without dead ends: 4476 [2022-01-10 12:20:09,561 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 12:20:09,561 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 4016 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4016 SdHoareTripleChecker+Valid, 5307 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:09,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4016 Valid, 5307 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:20:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2022-01-10 12:20:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 2768. [2022-01-10 12:20:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2767 states have (on average 1.6884712685218648) internal successors, (4672), 2767 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4672 transitions. [2022-01-10 12:20:09,747 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4672 transitions. Word has length 98 [2022-01-10 12:20:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:09,747 INFO L470 AbstractCegarLoop]: Abstraction has 2768 states and 4672 transitions. [2022-01-10 12:20:09,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4672 transitions. [2022-01-10 12:20:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:20:09,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:09,752 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] [2022-01-10 12:20:09,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:20:09,753 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:09,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash 207133820, now seen corresponding path program 1 times [2022-01-10 12:20:09,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:09,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967213448] [2022-01-10 12:20:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:09,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:09,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967213448] [2022-01-10 12:20:09,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967213448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:09,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:09,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:20:09,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847639144] [2022-01-10 12:20:09,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:09,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:20:09,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:09,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:20:09,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:20:09,851 INFO L87 Difference]: Start difference. First operand 2768 states and 4672 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:10,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:10,075 INFO L93 Difference]: Finished difference Result 3582 states and 5887 transitions. [2022-01-10 12:20:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:20:10,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:20:10,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:10,084 INFO L225 Difference]: With dead ends: 3582 [2022-01-10 12:20:10,084 INFO L226 Difference]: Without dead ends: 2739 [2022-01-10 12:20:10,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:20:10,087 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 1215 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:10,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 2120 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2022-01-10 12:20:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2714. [2022-01-10 12:20:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 1.688536675267232) internal successors, (4581), 2713 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 4581 transitions. [2022-01-10 12:20:10,298 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 4581 transitions. Word has length 98 [2022-01-10 12:20:10,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:10,299 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 4581 transitions. [2022-01-10 12:20:10,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:10,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 4581 transitions. [2022-01-10 12:20:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:20:10,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:10,303 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] [2022-01-10 12:20:10,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:20:10,304 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash -122748896, now seen corresponding path program 1 times [2022-01-10 12:20:10,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:10,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733253427] [2022-01-10 12:20:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:10,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:10,397 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 12:20:10,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:10,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733253427] [2022-01-10 12:20:10,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733253427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:10,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:10,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:10,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569961919] [2022-01-10 12:20:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:10,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:10,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:10,398 INFO L87 Difference]: Start difference. First operand 2714 states and 4581 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:10,947 INFO L93 Difference]: Finished difference Result 3991 states and 6480 transitions. [2022-01-10 12:20:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:10,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:20:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:10,958 INFO L225 Difference]: With dead ends: 3991 [2022-01-10 12:20:10,959 INFO L226 Difference]: Without dead ends: 3762 [2022-01-10 12:20:10,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 12:20:10,960 INFO L933 BasicCegarLoop]: 1304 mSDtfsCounter, 1167 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:10,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 4307 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2022-01-10 12:20:11,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 2925. [2022-01-10 12:20:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2924 states have (on average 1.6716826265389877) internal successors, (4888), 2924 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4888 transitions. [2022-01-10 12:20:11,198 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4888 transitions. Word has length 98 [2022-01-10 12:20:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:11,198 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 4888 transitions. [2022-01-10 12:20:11,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4888 transitions. [2022-01-10 12:20:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 12:20:11,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:11,203 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] [2022-01-10 12:20:11,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:20:11,203 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash -61625758, now seen corresponding path program 1 times [2022-01-10 12:20:11,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:11,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069859671] [2022-01-10 12:20:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:11,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:11,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:11,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069859671] [2022-01-10 12:20:11,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069859671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:11,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:11,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:20:11,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154626386] [2022-01-10 12:20:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:11,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:11,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:11,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:11,313 INFO L87 Difference]: Start difference. First operand 2925 states and 4888 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:11,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:11,949 INFO L93 Difference]: Finished difference Result 6271 states and 9811 transitions. [2022-01-10 12:20:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:11,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 12:20:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:11,965 INFO L225 Difference]: With dead ends: 6271 [2022-01-10 12:20:11,965 INFO L226 Difference]: Without dead ends: 5332 [2022-01-10 12:20:11,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 12:20:11,967 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 654 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:11,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 3119 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:11,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5332 states. [2022-01-10 12:20:12,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5332 to 3011. [2022-01-10 12:20:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 3010 states have (on average 1.658139534883721) internal successors, (4991), 3010 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:12,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 4991 transitions. [2022-01-10 12:20:12,193 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 4991 transitions. Word has length 99 [2022-01-10 12:20:12,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:12,193 INFO L470 AbstractCegarLoop]: Abstraction has 3011 states and 4991 transitions. [2022-01-10 12:20:12,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 4991 transitions. [2022-01-10 12:20:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 12:20:12,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:12,198 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] [2022-01-10 12:20:12,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:20:12,198 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:12,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:12,199 INFO L85 PathProgramCache]: Analyzing trace with hash 218724131, now seen corresponding path program 1 times [2022-01-10 12:20:12,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:12,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936481289] [2022-01-10 12:20:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:12,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:12,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:12,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936481289] [2022-01-10 12:20:12,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936481289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:12,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:12,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:12,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303820070] [2022-01-10 12:20:12,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:12,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:12,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:12,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:12,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:12,303 INFO L87 Difference]: Start difference. First operand 3011 states and 4991 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:12,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:12,756 INFO L93 Difference]: Finished difference Result 4081 states and 6558 transitions. [2022-01-10 12:20:12,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:20:12,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 12:20:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:12,768 INFO L225 Difference]: With dead ends: 4081 [2022-01-10 12:20:12,768 INFO L226 Difference]: Without dead ends: 3527 [2022-01-10 12:20:12,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:20:12,770 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 820 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:12,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 3323 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2022-01-10 12:20:13,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3044. [2022-01-10 12:20:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 3043 states have (on average 1.65428853105488) internal successors, (5034), 3043 states have internal predecessors, (5034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 5034 transitions. [2022-01-10 12:20:13,036 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 5034 transitions. Word has length 99 [2022-01-10 12:20:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:13,036 INFO L470 AbstractCegarLoop]: Abstraction has 3044 states and 5034 transitions. [2022-01-10 12:20:13,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 5034 transitions. [2022-01-10 12:20:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 12:20:13,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:13,041 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:13,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:20:13,041 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:13,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:13,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2115424941, now seen corresponding path program 1 times [2022-01-10 12:20:13,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:13,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294296981] [2022-01-10 12:20:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:13,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:13,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:13,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294296981] [2022-01-10 12:20:13,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294296981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:13,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:13,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:20:13,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751536484] [2022-01-10 12:20:13,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:13,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:20:13,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:13,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:20:13,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:13,089 INFO L87 Difference]: Start difference. First operand 3044 states and 5034 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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 12:20:13,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:13,527 INFO L93 Difference]: Finished difference Result 8642 states and 14236 transitions. [2022-01-10 12:20:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:20:13,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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 12:20:13,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:13,539 INFO L225 Difference]: With dead ends: 8642 [2022-01-10 12:20:13,539 INFO L226 Difference]: Without dead ends: 5635 [2022-01-10 12:20:13,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:13,545 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 607 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:13,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 1222 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:13,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5635 states. [2022-01-10 12:20:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5635 to 4404. [2022-01-10 12:20:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4404 states, 4403 states have (on average 1.6931637519872813) internal successors, (7455), 4403 states have internal predecessors, (7455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4404 states to 4404 states and 7455 transitions. [2022-01-10 12:20:13,850 INFO L78 Accepts]: Start accepts. Automaton has 4404 states and 7455 transitions. Word has length 115 [2022-01-10 12:20:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:13,850 INFO L470 AbstractCegarLoop]: Abstraction has 4404 states and 7455 transitions. [2022-01-10 12:20:13,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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 12:20:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4404 states and 7455 transitions. [2022-01-10 12:20:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 12:20:13,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:13,856 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:13,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:20:13,856 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash -50632232, now seen corresponding path program 1 times [2022-01-10 12:20:13,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:13,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785911828] [2022-01-10 12:20:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:13,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:13,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:13,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785911828] [2022-01-10 12:20:13,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785911828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:13,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:13,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:20:13,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916197433] [2022-01-10 12:20:13,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:13,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:20:13,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:13,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:20:13,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:13,904 INFO L87 Difference]: Start difference. First operand 4404 states and 7455 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:14,447 INFO L93 Difference]: Finished difference Result 13122 states and 22235 transitions. [2022-01-10 12:20:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:20:14,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-10 12:20:14,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:14,463 INFO L225 Difference]: With dead ends: 13122 [2022-01-10 12:20:14,463 INFO L226 Difference]: Without dead ends: 8755 [2022-01-10 12:20:14,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:14,468 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 605 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:14,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 1316 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8755 states. [2022-01-10 12:20:14,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8755 to 7524. [2022-01-10 12:20:14,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 7523 states have (on average 1.7313571713412204) internal successors, (13025), 7523 states have internal predecessors, (13025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 13025 transitions. [2022-01-10 12:20:14,935 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 13025 transitions. Word has length 116 [2022-01-10 12:20:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:14,935 INFO L470 AbstractCegarLoop]: Abstraction has 7524 states and 13025 transitions. [2022-01-10 12:20:14,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 13025 transitions. [2022-01-10 12:20:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 12:20:14,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:14,947 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:14,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:20:14,948 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:14,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2071740742, now seen corresponding path program 1 times [2022-01-10 12:20:14,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:14,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534760598] [2022-01-10 12:20:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:14,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:15,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534760598] [2022-01-10 12:20:15,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534760598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:15,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:15,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:20:15,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301126320] [2022-01-10 12:20:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:15,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:20:15,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:20:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:15,039 INFO L87 Difference]: Start difference. First operand 7524 states and 13025 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:15,914 INFO L93 Difference]: Finished difference Result 22306 states and 38657 transitions. [2022-01-10 12:20:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:20:15,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-10 12:20:15,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:15,941 INFO L225 Difference]: With dead ends: 22306 [2022-01-10 12:20:15,941 INFO L226 Difference]: Without dead ends: 14819 [2022-01-10 12:20:15,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:15,948 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 603 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:15,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 1308 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:15,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14819 states. [2022-01-10 12:20:16,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14819 to 13588. [2022-01-10 12:20:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13588 states, 13587 states have (on average 1.756163980275263) internal successors, (23861), 13587 states have internal predecessors, (23861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13588 states to 13588 states and 23861 transitions. [2022-01-10 12:20:16,589 INFO L78 Accepts]: Start accepts. Automaton has 13588 states and 23861 transitions. Word has length 117 [2022-01-10 12:20:16,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:16,589 INFO L470 AbstractCegarLoop]: Abstraction has 13588 states and 23861 transitions. [2022-01-10 12:20:16,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:16,589 INFO L276 IsEmpty]: Start isEmpty. Operand 13588 states and 23861 transitions. [2022-01-10 12:20:16,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 12:20:16,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:16,611 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:16,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:20:16,611 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:16,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 224030515, now seen corresponding path program 1 times [2022-01-10 12:20:16,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:16,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579687547] [2022-01-10 12:20:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:16,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:20:16,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:16,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579687547] [2022-01-10 12:20:16,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579687547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:16,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:16,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:20:16,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268105402] [2022-01-10 12:20:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:16,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:20:16,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:16,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:20:16,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:20:16,808 INFO L87 Difference]: Start difference. First operand 13588 states and 23861 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:19,677 INFO L93 Difference]: Finished difference Result 54546 states and 95691 transitions. [2022-01-10 12:20:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:19,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 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 12:20:19,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:19,786 INFO L225 Difference]: With dead ends: 54546 [2022-01-10 12:20:19,786 INFO L226 Difference]: Without dead ends: 53960 [2022-01-10 12:20:19,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:20:19,804 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 3063 mSDsluCounter, 3245 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3063 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:19,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3063 Valid, 4016 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53960 states. [2022-01-10 12:20:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53960 to 26386. [2022-01-10 12:20:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26386 states, 26385 states have (on average 1.7629334849346219) internal successors, (46515), 26385 states have internal predecessors, (46515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26386 states to 26386 states and 46515 transitions. [2022-01-10 12:20:21,523 INFO L78 Accepts]: Start accepts. Automaton has 26386 states and 46515 transitions. Word has length 118 [2022-01-10 12:20:21,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:21,523 INFO L470 AbstractCegarLoop]: Abstraction has 26386 states and 46515 transitions. [2022-01-10 12:20:21,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 26386 states and 46515 transitions. [2022-01-10 12:20:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 12:20:21,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:21,566 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:21,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:20:21,566 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1232544869, now seen corresponding path program 1 times [2022-01-10 12:20:21,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:21,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546246743] [2022-01-10 12:20:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:21,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:20:21,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:21,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546246743] [2022-01-10 12:20:21,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546246743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:21,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:21,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:20:21,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590301313] [2022-01-10 12:20:21,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:21,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:20:21,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:21,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:20:21,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:20:21,679 INFO L87 Difference]: Start difference. First operand 26386 states and 46515 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 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 12:20:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:27,183 INFO L93 Difference]: Finished difference Result 103816 states and 183405 transitions. [2022-01-10 12:20:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:27,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 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 119 [2022-01-10 12:20:27,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:27,396 INFO L225 Difference]: With dead ends: 103816 [2022-01-10 12:20:27,396 INFO L226 Difference]: Without dead ends: 103230 [2022-01-10 12:20:27,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:20:27,425 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 2934 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2934 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:27,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2934 Valid, 3506 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103230 states. [2022-01-10 12:20:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103230 to 51932. [2022-01-10 12:20:30,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51932 states, 51931 states have (on average 1.767248849434827) internal successors, (91775), 51931 states have internal predecessors, (91775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51932 states to 51932 states and 91775 transitions. [2022-01-10 12:20:30,971 INFO L78 Accepts]: Start accepts. Automaton has 51932 states and 91775 transitions. Word has length 119 [2022-01-10 12:20:30,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:30,971 INFO L470 AbstractCegarLoop]: Abstraction has 51932 states and 91775 transitions. [2022-01-10 12:20:30,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 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 12:20:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 51932 states and 91775 transitions. [2022-01-10 12:20:31,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 12:20:31,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:31,054 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:31,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:20:31,054 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:31,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:31,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1306950033, now seen corresponding path program 1 times [2022-01-10 12:20:31,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:31,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643663437] [2022-01-10 12:20:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:31,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:20:31,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:31,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643663437] [2022-01-10 12:20:31,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643663437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:31,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:31,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:20:31,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916662803] [2022-01-10 12:20:31,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:31,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:31,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:31,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:31,124 INFO L87 Difference]: Start difference. First operand 51932 states and 91775 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 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 12:20:36,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:36,743 INFO L93 Difference]: Finished difference Result 152844 states and 270417 transitions. [2022-01-10 12:20:36,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:20:36,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 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 119 [2022-01-10 12:20:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:37,108 INFO L225 Difference]: With dead ends: 152844 [2022-01-10 12:20:37,108 INFO L226 Difference]: Without dead ends: 100962 [2022-01-10 12:20:37,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:20:37,175 INFO L933 BasicCegarLoop]: 1224 mSDtfsCounter, 1922 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:37,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 1838 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:37,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100962 states. [2022-01-10 12:20:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100962 to 51932. [2022-01-10 12:20:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51932 states, 51931 states have (on average 1.7672103367930523) internal successors, (91773), 51931 states have internal predecessors, (91773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51932 states to 51932 states and 91773 transitions. [2022-01-10 12:20:41,146 INFO L78 Accepts]: Start accepts. Automaton has 51932 states and 91773 transitions. Word has length 119 [2022-01-10 12:20:41,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:41,146 INFO L470 AbstractCegarLoop]: Abstraction has 51932 states and 91773 transitions. [2022-01-10 12:20:41,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 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 12:20:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 51932 states and 91773 transitions. [2022-01-10 12:20:41,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 12:20:41,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:41,224 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:41,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:20:41,225 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash -100297735, now seen corresponding path program 1 times [2022-01-10 12:20:41,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:41,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67188831] [2022-01-10 12:20:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:41,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:20:41,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:41,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67188831] [2022-01-10 12:20:41,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67188831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:41,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:41,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:20:41,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142061361] [2022-01-10 12:20:41,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:41,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:20:41,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:41,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:20:41,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:20:41,320 INFO L87 Difference]: Start difference. First operand 51932 states and 91773 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:50,740 INFO L93 Difference]: Finished difference Result 156756 states and 276367 transitions. [2022-01-10 12:20:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 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 120 [2022-01-10 12:20:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:51,263 INFO L225 Difference]: With dead ends: 156756 [2022-01-10 12:20:51,263 INFO L226 Difference]: Without dead ends: 156170 [2022-01-10 12:20:51,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:20:51,323 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 2870 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:51,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 3546 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156170 states. [2022-01-10 12:20:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156170 to 102994. [2022-01-10 12:20:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102994 states, 102993 states have (on average 1.7696833765401532) internal successors, (182265), 102993 states have internal predecessors, (182265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102994 states to 102994 states and 182265 transitions. [2022-01-10 12:20:58,774 INFO L78 Accepts]: Start accepts. Automaton has 102994 states and 182265 transitions. Word has length 120 [2022-01-10 12:20:58,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:58,775 INFO L470 AbstractCegarLoop]: Abstraction has 102994 states and 182265 transitions. [2022-01-10 12:20:58,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:58,776 INFO L276 IsEmpty]: Start isEmpty. Operand 102994 states and 182265 transitions. [2022-01-10 12:20:58,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 12:20:58,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:58,981 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:58,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:20:58,982 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:58,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:58,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1625183162, now seen corresponding path program 1 times [2022-01-10 12:20:58,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:58,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025147290] [2022-01-10 12:20:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:58,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:59,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:59,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025147290] [2022-01-10 12:20:59,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025147290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:59,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:59,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 12:20:59,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332956114] [2022-01-10 12:20:59,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:59,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 12:20:59,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 12:20:59,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:20:59,208 INFO L87 Difference]: Start difference. First operand 102994 states and 182265 transitions. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)