/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_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec7_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:59:30,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:59:30,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:59:31,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:59:31,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:59:31,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:59:31,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:59:31,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:59:31,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:59:31,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:59:31,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:59:31,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:59:31,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:59:31,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:59:31,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:59:31,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:59:31,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:59:31,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:59:31,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:59:31,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:59:31,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:59:31,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:59:31,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:59:31,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:59:31,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:59:31,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:59:31,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:59:31,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:59:31,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:59:31,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:59:31,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:59:31,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:59:31,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:59:31,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:59:31,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:59:31,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:59:31,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:59:31,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:59:31,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:59:31,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:59:31,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:59:31,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:59:31,101 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:59:31,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:59:31,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:59:31,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:59:31,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:59:31,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:59:31,103 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:59:31,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:59:31,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:59:31,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:59:31,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:59:31,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:59:31,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:59:31,104 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:59:31,104 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:59:31,104 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:59:31,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:59:31,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:59:31,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:59:31,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:59:31,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:59:31,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:59:31,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:59:31,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:59:31,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:59:31,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:59:31,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:59:31,106 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:59:31,106 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:59:31,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:59:31,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:59:31,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:59:31,107 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:59:31,107 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:59:31,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:59:31,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:59:31,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:59:31,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:59:31,341 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:59:31,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product35.cil.c [2022-01-10 23:59:31,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5972dd12/2b80a0f77e34422e9523c3cb986debb2/FLAG9a856d82b [2022-01-10 23:59:31,856 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:59:31,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product35.cil.c [2022-01-10 23:59:31,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5972dd12/2b80a0f77e34422e9523c3cb986debb2/FLAG9a856d82b [2022-01-10 23:59:32,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5972dd12/2b80a0f77e34422e9523c3cb986debb2 [2022-01-10 23:59:32,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:59:32,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:59:32,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:59:32,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:59:32,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:59:32,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:59:32" (1/1) ... [2022-01-10 23:59:32,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aafa224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:32, skipping insertion in model container [2022-01-10 23:59:32,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:59:32" (1/1) ... [2022-01-10 23:59:32,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:59:32,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:59:32,759 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_spec7_product35.cil.c[48298,48311] [2022-01-10 23:59:32,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:32,823 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:59:32,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:59:32,902 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_spec7_product35.cil.c[48298,48311] [2022-01-10 23:59:32,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:32,937 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:59:32,993 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_spec7_product35.cil.c[48298,48311] [2022-01-10 23:59:33,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:33,038 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:59:33,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33 WrapperNode [2022-01-10 23:59:33,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:59:33,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:59:33,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:59:33,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:59:33,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (1/1) ... [2022-01-10 23:59:33,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (1/1) ... [2022-01-10 23:59:33,254 INFO L137 Inliner]: procedures = 139, calls = 244, calls flagged for inlining = 151, calls inlined = 468, statements flattened = 6933 [2022-01-10 23:59:33,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:59:33,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:59:33,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:59:33,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:59:33,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (1/1) ... [2022-01-10 23:59:33,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (1/1) ... [2022-01-10 23:59:33,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (1/1) ... [2022-01-10 23:59:33,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (1/1) ... [2022-01-10 23:59:33,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (1/1) ... [2022-01-10 23:59:33,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (1/1) ... [2022-01-10 23:59:33,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (1/1) ... [2022-01-10 23:59:33,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:59:33,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:59:33,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:59:33,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:59:33,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (1/1) ... [2022-01-10 23:59:33,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:59:33,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:59:33,505 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 23:59:33,528 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 23:59:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:59:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:59:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:59:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:59:33,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:59:33,772 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:59:33,788 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:59:36,326 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:59:36,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:59:36,342 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:59:36,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:36 BoogieIcfgContainer [2022-01-10 23:59:36,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:59:36,347 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:59:36,347 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:59:36,348 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:59:36,350 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:36" (1/1) ... [2022-01-10 23:59:36,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:59:36 BasicIcfg [2022-01-10 23:59:36,991 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:59:36,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:59:36,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:59:36,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:59:36,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:59:32" (1/4) ... [2022-01-10 23:59:36,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67345d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:59:36, skipping insertion in model container [2022-01-10 23:59:36,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:33" (2/4) ... [2022-01-10 23:59:36,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67345d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:59:36, skipping insertion in model container [2022-01-10 23:59:36,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:36" (3/4) ... [2022-01-10 23:59:36,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67345d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:59:36, skipping insertion in model container [2022-01-10 23:59:36,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:59:36" (4/4) ... [2022-01-10 23:59:37,000 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product35.cil.cTransformedIcfg [2022-01-10 23:59:37,004 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:59:37,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 23:59:37,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:59:37,057 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 23:59:37,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 23:59:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 1445 states, 1438 states have (on average 1.6592489568845619) internal successors, (2386), 1444 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:37,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:59:37,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:37,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:37,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:37,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:37,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1649661781, now seen corresponding path program 1 times [2022-01-10 23:59:37,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:37,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342135346] [2022-01-10 23:59:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:37,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:37,560 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 23:59:37,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:37,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342135346] [2022-01-10 23:59:37,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342135346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:37,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:37,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:59:37,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27350311] [2022-01-10 23:59:37,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:37,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:59:37,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:59:37,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:59:37,603 INFO L87 Difference]: Start difference. First operand has 1445 states, 1438 states have (on average 1.6592489568845619) internal successors, (2386), 1444 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:37,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:37,691 INFO L93 Difference]: Finished difference Result 2576 states and 4217 transitions. [2022-01-10 23:59:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:59:37,693 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 23:59:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:37,714 INFO L225 Difference]: With dead ends: 2576 [2022-01-10 23:59:37,714 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 23:59:37,722 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 23:59:37,726 INFO L933 BasicCegarLoop]: 2372 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:37,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:37,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 23:59:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 23:59:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1217 states have (on average 1.6721446179129005) internal successors, (2035), 1222 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 2035 transitions. [2022-01-10 23:59:37,824 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 2035 transitions. Word has length 62 [2022-01-10 23:59:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:37,824 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 2035 transitions. [2022-01-10 23:59:37,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 2035 transitions. [2022-01-10 23:59:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:59:37,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:37,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:37,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:59:37,829 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:37,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:37,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2070971041, now seen corresponding path program 1 times [2022-01-10 23:59:37,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:37,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108706164] [2022-01-10 23:59:37,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:37,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:38,107 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 23:59:38,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:38,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108706164] [2022-01-10 23:59:38,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108706164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:38,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:38,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:38,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759712805] [2022-01-10 23:59:38,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:38,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:38,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:38,111 INFO L87 Difference]: Start difference. First operand 1223 states and 2035 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:38,281 INFO L93 Difference]: Finished difference Result 2427 states and 4042 transitions. [2022-01-10 23:59:38,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:38,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 23:59:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:38,287 INFO L225 Difference]: With dead ends: 2427 [2022-01-10 23:59:38,288 INFO L226 Difference]: Without dead ends: 1223 [2022-01-10 23:59:38,290 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 23:59:38,291 INFO L933 BasicCegarLoop]: 2013 mSDtfsCounter, 2010 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:38,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 2026 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:38,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-10 23:59:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2022-01-10 23:59:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1217 states have (on average 1.6705012325390305) internal successors, (2033), 1222 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 2033 transitions. [2022-01-10 23:59:38,341 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 2033 transitions. Word has length 63 [2022-01-10 23:59:38,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:38,342 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 2033 transitions. [2022-01-10 23:59:38,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:38,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 2033 transitions. [2022-01-10 23:59:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:59:38,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:38,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:38,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:59:38,345 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:38,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:38,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1044537633, now seen corresponding path program 1 times [2022-01-10 23:59:38,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:38,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744279038] [2022-01-10 23:59:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:38,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:38,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:38,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744279038] [2022-01-10 23:59:38,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744279038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:38,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:38,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:38,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608941515] [2022-01-10 23:59:38,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:38,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:38,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:38,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:38,525 INFO L87 Difference]: Start difference. First operand 1223 states and 2033 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:39,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:39,152 INFO L93 Difference]: Finished difference Result 5983 states and 9961 transitions. [2022-01-10 23:59:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:59:39,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 23:59:39,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:39,173 INFO L225 Difference]: With dead ends: 5983 [2022-01-10 23:59:39,173 INFO L226 Difference]: Without dead ends: 4784 [2022-01-10 23:59:39,180 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 23:59:39,182 INFO L933 BasicCegarLoop]: 3989 mSDtfsCounter, 9948 mSDsluCounter, 5971 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9948 SdHoareTripleChecker+Valid, 9960 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:39,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9948 Valid, 9960 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:39,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4784 states. [2022-01-10 23:59:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4784 to 1223. [2022-01-10 23:59:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1217 states have (on average 1.6696795398520954) internal successors, (2032), 1222 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 2032 transitions. [2022-01-10 23:59:39,279 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 2032 transitions. Word has length 65 [2022-01-10 23:59:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:39,279 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 2032 transitions. [2022-01-10 23:59:39,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 2032 transitions. [2022-01-10 23:59:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:59:39,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:39,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:39,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:59:39,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1894807919, now seen corresponding path program 1 times [2022-01-10 23:59:39,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:39,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634627110] [2022-01-10 23:59:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:39,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:39,439 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 23:59:39,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:39,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634627110] [2022-01-10 23:59:39,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634627110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:39,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:39,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:39,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694525135] [2022-01-10 23:59:39,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:39,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:39,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:39,444 INFO L87 Difference]: Start difference. First operand 1223 states and 2032 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:39,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:39,555 INFO L93 Difference]: Finished difference Result 2431 states and 4042 transitions. [2022-01-10 23:59:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:39,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 23:59:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:39,563 INFO L225 Difference]: With dead ends: 2431 [2022-01-10 23:59:39,563 INFO L226 Difference]: Without dead ends: 1237 [2022-01-10 23:59:39,567 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 23:59:39,574 INFO L933 BasicCegarLoop]: 2046 mSDtfsCounter, 2011 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 2068 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 23:59:39,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2011 Valid, 2068 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:39,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-01-10 23:59:39,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1223. [2022-01-10 23:59:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1217 states have (on average 1.6688578471651603) internal successors, (2031), 1222 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 2031 transitions. [2022-01-10 23:59:39,655 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 2031 transitions. Word has length 66 [2022-01-10 23:59:39,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:39,655 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 2031 transitions. [2022-01-10 23:59:39,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:39,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 2031 transitions. [2022-01-10 23:59:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:59:39,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:39,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:39,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:59:39,657 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:39,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:39,658 INFO L85 PathProgramCache]: Analyzing trace with hash -431669758, now seen corresponding path program 1 times [2022-01-10 23:59:39,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:39,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294680570] [2022-01-10 23:59:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:39,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:39,760 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 23:59:39,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:39,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294680570] [2022-01-10 23:59:39,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294680570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:39,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:39,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:39,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96206235] [2022-01-10 23:59:39,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:39,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:39,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:39,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:39,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:39,762 INFO L87 Difference]: Start difference. First operand 1223 states and 2031 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:40,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:40,066 INFO L93 Difference]: Finished difference Result 3603 states and 5993 transitions. [2022-01-10 23:59:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:59:40,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 23:59:40,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:40,077 INFO L225 Difference]: With dead ends: 3603 [2022-01-10 23:59:40,077 INFO L226 Difference]: Without dead ends: 2414 [2022-01-10 23:59:40,081 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 23:59:40,081 INFO L933 BasicCegarLoop]: 2040 mSDtfsCounter, 9871 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9871 SdHoareTripleChecker+Valid, 4094 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 23:59:40,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9871 Valid, 4094 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2022-01-10 23:59:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 1223. [2022-01-10 23:59:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1217 states have (on average 1.66721446179129) internal successors, (2029), 1222 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 2029 transitions. [2022-01-10 23:59:40,175 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 2029 transitions. Word has length 67 [2022-01-10 23:59:40,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:40,180 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 2029 transitions. [2022-01-10 23:59:40,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 2029 transitions. [2022-01-10 23:59:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:40,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:40,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:40,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:59:40,182 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:40,182 INFO L85 PathProgramCache]: Analyzing trace with hash -325349729, now seen corresponding path program 1 times [2022-01-10 23:59:40,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:40,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17749618] [2022-01-10 23:59:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:40,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:40,332 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 23:59:40,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:40,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17749618] [2022-01-10 23:59:40,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17749618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:40,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:40,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:40,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629147739] [2022-01-10 23:59:40,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:40,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:40,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:40,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:40,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:40,334 INFO L87 Difference]: Start difference. First operand 1223 states and 2029 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:41,499 INFO L93 Difference]: Finished difference Result 10232 states and 16714 transitions. [2022-01-10 23:59:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:41,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:59:41,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:41,538 INFO L225 Difference]: With dead ends: 10232 [2022-01-10 23:59:41,539 INFO L226 Difference]: Without dead ends: 9336 [2022-01-10 23:59:41,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:41,545 INFO L933 BasicCegarLoop]: 3979 mSDtfsCounter, 17564 mSDsluCounter, 14217 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17564 SdHoareTripleChecker+Valid, 18196 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:41,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17564 Valid, 18196 Invalid, 284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:59:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9336 states. [2022-01-10 23:59:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9336 to 2085. [2022-01-10 23:59:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2079 states have (on average 1.6690716690716692) internal successors, (3470), 2084 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3470 transitions. [2022-01-10 23:59:41,746 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3470 transitions. Word has length 69 [2022-01-10 23:59:41,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:41,747 INFO L470 AbstractCegarLoop]: Abstraction has 2085 states and 3470 transitions. [2022-01-10 23:59:41,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:41,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3470 transitions. [2022-01-10 23:59:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:59:41,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:41,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:41,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:59:41,750 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1863601280, now seen corresponding path program 1 times [2022-01-10 23:59:41,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:41,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562734142] [2022-01-10 23:59:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:41,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:41,887 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 23:59:41,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:41,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562734142] [2022-01-10 23:59:41,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562734142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:41,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:41,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:41,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68753278] [2022-01-10 23:59:41,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:41,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:41,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:41,889 INFO L87 Difference]: Start difference. First operand 2085 states and 3470 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:42,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:42,308 INFO L93 Difference]: Finished difference Result 4778 states and 7816 transitions. [2022-01-10 23:59:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:59:42,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:59:42,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:42,338 INFO L225 Difference]: With dead ends: 4778 [2022-01-10 23:59:42,338 INFO L226 Difference]: Without dead ends: 3319 [2022-01-10 23:59:42,342 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 23:59:42,344 INFO L933 BasicCegarLoop]: 2011 mSDtfsCounter, 7429 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7429 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:42,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7429 Valid, 4338 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2022-01-10 23:59:42,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2085. [2022-01-10 23:59:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2079 states have (on average 1.667147667147667) internal successors, (3466), 2084 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3466 transitions. [2022-01-10 23:59:42,517 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3466 transitions. Word has length 70 [2022-01-10 23:59:42,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:42,517 INFO L470 AbstractCegarLoop]: Abstraction has 2085 states and 3466 transitions. [2022-01-10 23:59:42,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3466 transitions. [2022-01-10 23:59:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:59:42,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:42,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:42,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:59:42,525 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:42,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1559275701, now seen corresponding path program 1 times [2022-01-10 23:59:42,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:42,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937331187] [2022-01-10 23:59:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:42,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:42,631 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 23:59:42,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:42,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937331187] [2022-01-10 23:59:42,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937331187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:42,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:42,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:42,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220704026] [2022-01-10 23:59:42,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:42,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:42,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:42,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:42,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:42,633 INFO L87 Difference]: Start difference. First operand 2085 states and 3466 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:43,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:43,046 INFO L93 Difference]: Finished difference Result 6132 states and 10227 transitions. [2022-01-10 23:59:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:59:43,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:59:43,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:43,059 INFO L225 Difference]: With dead ends: 6132 [2022-01-10 23:59:43,059 INFO L226 Difference]: Without dead ends: 4084 [2022-01-10 23:59:43,064 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 23:59:43,065 INFO L933 BasicCegarLoop]: 3957 mSDtfsCounter, 6018 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6018 SdHoareTripleChecker+Valid, 5937 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:43,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6018 Valid, 5937 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2022-01-10 23:59:43,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2085. [2022-01-10 23:59:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2079 states have (on average 1.6661856661856662) internal successors, (3464), 2084 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3464 transitions. [2022-01-10 23:59:43,278 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3464 transitions. Word has length 70 [2022-01-10 23:59:43,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:43,278 INFO L470 AbstractCegarLoop]: Abstraction has 2085 states and 3464 transitions. [2022-01-10 23:59:43,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3464 transitions. [2022-01-10 23:59:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:59:43,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:43,281 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] [2022-01-10 23:59:43,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:59:43,281 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:43,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2078436565, now seen corresponding path program 1 times [2022-01-10 23:59:43,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:43,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536788214] [2022-01-10 23:59:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:43,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:43,437 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 23:59:43,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:43,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536788214] [2022-01-10 23:59:43,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536788214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:43,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:43,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:43,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464153149] [2022-01-10 23:59:43,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:43,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:59:43,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:59:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:59:43,439 INFO L87 Difference]: Start difference. First operand 2085 states and 3464 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:45,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:45,778 INFO L93 Difference]: Finished difference Result 11896 states and 19133 transitions. [2022-01-10 23:59:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:59:45,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 23:59:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:45,807 INFO L225 Difference]: With dead ends: 11896 [2022-01-10 23:59:45,807 INFO L226 Difference]: Without dead ends: 10553 [2022-01-10 23:59:45,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:59:45,814 INFO L933 BasicCegarLoop]: 3664 mSDtfsCounter, 17474 mSDsluCounter, 17097 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17474 SdHoareTripleChecker+Valid, 20761 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:45,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17474 Valid, 20761 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 23:59:45,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10553 states. [2022-01-10 23:59:46,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10553 to 4003. [2022-01-10 23:59:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 3997 states have (on average 1.670252689517138) internal successors, (6676), 4002 states have internal predecessors, (6676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 6676 transitions. [2022-01-10 23:59:46,287 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 6676 transitions. Word has length 71 [2022-01-10 23:59:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:46,287 INFO L470 AbstractCegarLoop]: Abstraction has 4003 states and 6676 transitions. [2022-01-10 23:59:46,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 6676 transitions. [2022-01-10 23:59:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:59:46,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:46,292 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] [2022-01-10 23:59:46,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:59:46,292 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:46,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:46,293 INFO L85 PathProgramCache]: Analyzing trace with hash 514393306, now seen corresponding path program 1 times [2022-01-10 23:59:46,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:46,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101110039] [2022-01-10 23:59:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:46,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:46,383 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 23:59:46,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:46,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101110039] [2022-01-10 23:59:46,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101110039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:46,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:46,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:46,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94303931] [2022-01-10 23:59:46,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:46,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:59:46,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:59:46,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:59:46,385 INFO L87 Difference]: Start difference. First operand 4003 states and 6676 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:46,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:46,887 INFO L93 Difference]: Finished difference Result 6690 states and 10993 transitions. [2022-01-10 23:59:46,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:59:46,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 23:59:46,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:46,901 INFO L225 Difference]: With dead ends: 6690 [2022-01-10 23:59:46,901 INFO L226 Difference]: Without dead ends: 5219 [2022-01-10 23:59:46,906 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 23:59:46,907 INFO L933 BasicCegarLoop]: 2019 mSDtfsCounter, 4087 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4274 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:46,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4087 Valid, 4274 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2022-01-10 23:59:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 4003. [2022-01-10 23:59:47,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 3997 states have (on average 1.6697523142356767) internal successors, (6674), 4002 states have internal predecessors, (6674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 6674 transitions. [2022-01-10 23:59:47,307 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 6674 transitions. Word has length 72 [2022-01-10 23:59:47,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:47,307 INFO L470 AbstractCegarLoop]: Abstraction has 4003 states and 6674 transitions. [2022-01-10 23:59:47,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:47,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 6674 transitions. [2022-01-10 23:59:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:59:47,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:47,311 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] [2022-01-10 23:59:47,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:59:47,312 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:47,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2055093093, now seen corresponding path program 1 times [2022-01-10 23:59:47,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:47,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30559010] [2022-01-10 23:59:47,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:47,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:47,420 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 23:59:47,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:47,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30559010] [2022-01-10 23:59:47,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30559010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:47,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:47,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:47,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883450549] [2022-01-10 23:59:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:47,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:47,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:47,423 INFO L87 Difference]: Start difference. First operand 4003 states and 6674 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:49,270 INFO L93 Difference]: Finished difference Result 14176 states and 22836 transitions. [2022-01-10 23:59:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:59:49,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 23:59:49,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:49,300 INFO L225 Difference]: With dead ends: 14176 [2022-01-10 23:59:49,300 INFO L226 Difference]: Without dead ends: 11783 [2022-01-10 23:59:49,307 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 23:59:49,308 INFO L933 BasicCegarLoop]: 5967 mSDtfsCounter, 5678 mSDsluCounter, 11132 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5678 SdHoareTripleChecker+Valid, 17099 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:49,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5678 Valid, 17099 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:59:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11783 states. [2022-01-10 23:59:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11783 to 5490. [2022-01-10 23:59:49,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5490 states, 5484 states have (on average 1.648796498905908) internal successors, (9042), 5489 states have internal predecessors, (9042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5490 states to 5490 states and 9042 transitions. [2022-01-10 23:59:49,878 INFO L78 Accepts]: Start accepts. Automaton has 5490 states and 9042 transitions. Word has length 72 [2022-01-10 23:59:49,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:49,878 INFO L470 AbstractCegarLoop]: Abstraction has 5490 states and 9042 transitions. [2022-01-10 23:59:49,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:49,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5490 states and 9042 transitions. [2022-01-10 23:59:49,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:59:49,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:49,883 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] [2022-01-10 23:59:49,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:59:49,883 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:49,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:49,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1823324861, now seen corresponding path program 1 times [2022-01-10 23:59:49,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:49,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774537765] [2022-01-10 23:59:49,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:49,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:50,013 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 23:59:50,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:50,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774537765] [2022-01-10 23:59:50,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774537765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:50,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:50,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:50,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835545366] [2022-01-10 23:59:50,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:50,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:59:50,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:50,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:59:50,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:59:50,015 INFO L87 Difference]: Start difference. First operand 5490 states and 9042 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:52,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:52,989 INFO L93 Difference]: Finished difference Result 23142 states and 37177 transitions. [2022-01-10 23:59:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:59:52,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 23:59:52,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:53,047 INFO L225 Difference]: With dead ends: 23142 [2022-01-10 23:59:53,047 INFO L226 Difference]: Without dead ends: 20509 [2022-01-10 23:59:53,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:59:53,062 INFO L933 BasicCegarLoop]: 3175 mSDtfsCounter, 17200 mSDsluCounter, 17791 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17200 SdHoareTripleChecker+Valid, 20966 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:53,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17200 Valid, 20966 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 23:59:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20509 states. [2022-01-10 23:59:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20509 to 9398. [2022-01-10 23:59:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9398 states, 9392 states have (on average 1.6553449744463373) internal successors, (15547), 9397 states have internal predecessors, (15547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9398 states to 9398 states and 15547 transitions. [2022-01-10 23:59:54,052 INFO L78 Accepts]: Start accepts. Automaton has 9398 states and 15547 transitions. Word has length 72 [2022-01-10 23:59:54,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:54,053 INFO L470 AbstractCegarLoop]: Abstraction has 9398 states and 15547 transitions. [2022-01-10 23:59:54,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:54,053 INFO L276 IsEmpty]: Start isEmpty. Operand 9398 states and 15547 transitions. [2022-01-10 23:59:54,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:59:54,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:54,059 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] [2022-01-10 23:59:54,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:59:54,059 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1414500636, now seen corresponding path program 1 times [2022-01-10 23:59:54,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:54,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025669938] [2022-01-10 23:59:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:54,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:54,178 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 23:59:54,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:54,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025669938] [2022-01-10 23:59:54,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025669938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:54,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:54,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:54,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930928593] [2022-01-10 23:59:54,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:54,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:54,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:54,180 INFO L87 Difference]: Start difference. First operand 9398 states and 15547 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:57,270 INFO L93 Difference]: Finished difference Result 34488 states and 56698 transitions. [2022-01-10 23:59:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:57,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 23:59:57,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:57,334 INFO L225 Difference]: With dead ends: 34488 [2022-01-10 23:59:57,335 INFO L226 Difference]: Without dead ends: 31040 [2022-01-10 23:59:57,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:57,354 INFO L933 BasicCegarLoop]: 4754 mSDtfsCounter, 12415 mSDsluCounter, 14368 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12415 SdHoareTripleChecker+Valid, 19122 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:57,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12415 Valid, 19122 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:59:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31040 states. [2022-01-10 23:59:58,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31040 to 10706. [2022-01-10 23:59:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10706 states, 10700 states have (on average 1.652336448598131) internal successors, (17680), 10705 states have internal predecessors, (17680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10706 states to 10706 states and 17680 transitions. [2022-01-10 23:59:58,747 INFO L78 Accepts]: Start accepts. Automaton has 10706 states and 17680 transitions. Word has length 72 [2022-01-10 23:59:58,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:58,747 INFO L470 AbstractCegarLoop]: Abstraction has 10706 states and 17680 transitions. [2022-01-10 23:59:58,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 10706 states and 17680 transitions. [2022-01-10 23:59:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:59:58,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:58,754 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] [2022-01-10 23:59:58,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:59:58,754 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:59:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:58,755 INFO L85 PathProgramCache]: Analyzing trace with hash -435085140, now seen corresponding path program 1 times [2022-01-10 23:59:58,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:58,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039999943] [2022-01-10 23:59:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:58,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:58,885 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 23:59:58,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:58,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039999943] [2022-01-10 23:59:58,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039999943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:58,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:58,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:58,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744180436] [2022-01-10 23:59:58,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:58,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:59:58,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:59:58,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:59:58,887 INFO L87 Difference]: Start difference. First operand 10706 states and 17680 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:03,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:03,333 INFO L93 Difference]: Finished difference Result 36997 states and 59780 transitions. [2022-01-11 00:00:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 00:00:03,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-11 00:00:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:03,403 INFO L225 Difference]: With dead ends: 36997 [2022-01-11 00:00:03,403 INFO L226 Difference]: Without dead ends: 31259 [2022-01-11 00:00:03,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-01-11 00:00:03,425 INFO L933 BasicCegarLoop]: 4379 mSDtfsCounter, 12559 mSDsluCounter, 16797 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12559 SdHoareTripleChecker+Valid, 21176 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:03,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12559 Valid, 21176 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 00:00:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31259 states. [2022-01-11 00:00:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31259 to 12174. [2022-01-11 00:00:04,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12174 states, 12168 states have (on average 1.6444773175542406) internal successors, (20010), 12173 states have internal predecessors, (20010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12174 states to 12174 states and 20010 transitions. [2022-01-11 00:00:04,891 INFO L78 Accepts]: Start accepts. Automaton has 12174 states and 20010 transitions. Word has length 72 [2022-01-11 00:00:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:04,891 INFO L470 AbstractCegarLoop]: Abstraction has 12174 states and 20010 transitions. [2022-01-11 00:00:04,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 12174 states and 20010 transitions. [2022-01-11 00:00:04,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:00:04,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:04,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:00:04,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:00:04,898 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 00:00:04,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash 660622790, now seen corresponding path program 1 times [2022-01-11 00:00:04,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:04,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102931896] [2022-01-11 00:00:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:04,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:05,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:05,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102931896] [2022-01-11 00:00:05,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102931896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:05,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:05,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:00:05,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076586453] [2022-01-11 00:00:05,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:05,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:00:05,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:00:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:00:05,011 INFO L87 Difference]: Start difference. First operand 12174 states and 20010 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:12,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:12,942 INFO L93 Difference]: Finished difference Result 77260 states and 126462 transitions. [2022-01-11 00:00:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:00:12,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:00:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:13,088 INFO L225 Difference]: With dead ends: 77260 [2022-01-11 00:00:13,088 INFO L226 Difference]: Without dead ends: 69110 [2022-01-11 00:00:13,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 00:00:13,122 INFO L933 BasicCegarLoop]: 3583 mSDtfsCounter, 12831 mSDsluCounter, 9828 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12831 SdHoareTripleChecker+Valid, 13411 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:13,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12831 Valid, 13411 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:00:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69110 states. [2022-01-11 00:00:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69110 to 24280. [2022-01-11 00:00:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24280 states, 24274 states have (on average 1.6442283925187444) internal successors, (39912), 24279 states have internal predecessors, (39912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24280 states to 24280 states and 39912 transitions. [2022-01-11 00:00:16,541 INFO L78 Accepts]: Start accepts. Automaton has 24280 states and 39912 transitions. Word has length 73 [2022-01-11 00:00:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:16,541 INFO L470 AbstractCegarLoop]: Abstraction has 24280 states and 39912 transitions. [2022-01-11 00:00:16,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:16,542 INFO L276 IsEmpty]: Start isEmpty. Operand 24280 states and 39912 transitions. [2022-01-11 00:00:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:00:16,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:16,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:00:16,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:00:16,557 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 00:00:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1998579957, now seen corresponding path program 1 times [2022-01-11 00:00:16,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:16,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072954670] [2022-01-11 00:00:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:16,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:16,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:16,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072954670] [2022-01-11 00:00:16,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072954670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:16,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:16,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:00:16,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837975573] [2022-01-11 00:00:16,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:16,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:00:16,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:16,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:00:16,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:00:16,687 INFO L87 Difference]: Start difference. First operand 24280 states and 39912 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:25,583 INFO L93 Difference]: Finished difference Result 82558 states and 133010 transitions. [2022-01-11 00:00:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:00:25,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 00:00:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:25,700 INFO L225 Difference]: With dead ends: 82558 [2022-01-11 00:00:25,700 INFO L226 Difference]: Without dead ends: 65236 [2022-01-11 00:00:25,733 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 [2022-01-11 00:00:25,734 INFO L933 BasicCegarLoop]: 1977 mSDtfsCounter, 8129 mSDsluCounter, 4971 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8129 SdHoareTripleChecker+Valid, 6948 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:25,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8129 Valid, 6948 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:00:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65236 states. [2022-01-11 00:00:29,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65236 to 24586. [2022-01-11 00:00:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24586 states, 24580 states have (on average 1.6405207485760782) internal successors, (40324), 24585 states have internal predecessors, (40324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24586 states to 24586 states and 40324 transitions. [2022-01-11 00:00:29,292 INFO L78 Accepts]: Start accepts. Automaton has 24586 states and 40324 transitions. Word has length 73 [2022-01-11 00:00:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:29,292 INFO L470 AbstractCegarLoop]: Abstraction has 24586 states and 40324 transitions. [2022-01-11 00:00:29,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 24586 states and 40324 transitions. [2022-01-11 00:00:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 00:00:29,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:29,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:00:29,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:00:29,304 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 00:00:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:29,305 INFO L85 PathProgramCache]: Analyzing trace with hash -289873583, now seen corresponding path program 1 times [2022-01-11 00:00:29,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:29,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2592681] [2022-01-11 00:00:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:29,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:29,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:29,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2592681] [2022-01-11 00:00:29,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2592681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:29,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:29,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:00:29,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716901316] [2022-01-11 00:00:29,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:29,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:00:29,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:29,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:00:29,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:00:29,412 INFO L87 Difference]: Start difference. First operand 24586 states and 40324 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)