/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:28:05,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:28:05,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:28:05,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:28:05,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:28:05,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:28:05,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:28:05,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:28:05,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:28:05,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:28:05,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:28:05,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:28:05,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:28:05,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:28:05,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:28:05,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:28:05,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:28:05,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:28:05,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:28:05,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:28:05,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:28:05,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:28:05,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:28:05,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:28:05,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:28:05,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:28:05,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:28:05,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:28:05,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:28:05,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:28:05,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:28:05,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:28:05,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:28:05,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:28:05,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:28:05,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:28:05,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:28:05,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:28:05,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:28:05,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:28:05,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:28:05,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:28:05,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:28:05,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:28:05,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:28:05,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:28:05,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:28:05,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:28:05,898 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:28:05,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:28:05,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:28:05,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:28:05,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:28:05,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:28:05,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:28:05,899 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:28:05,902 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:28:05,902 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:28:05,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:28:05,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:28:05,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:28:05,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:28:05,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:28:05,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:28:05,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:28:05,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:28:05,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:28:05,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:28:05,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:28:05,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:28:05,904 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:28:05,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:28:05,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:28:05,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:28:05,905 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:28:05,905 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:28:06,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:28:06,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:28:06,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:28:06,083 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:28:06,083 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:28:06,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2022-01-10 12:28:06,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452c1a712/f22cb599740240df829bbf25c59b98e0/FLAG71c767093 [2022-01-10 12:28:06,607 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:28:06,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2022-01-10 12:28:06,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452c1a712/f22cb599740240df829bbf25c59b98e0/FLAG71c767093 [2022-01-10 12:28:06,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452c1a712/f22cb599740240df829bbf25c59b98e0 [2022-01-10 12:28:06,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:28:06,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:28:06,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:28:06,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:28:06,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:28:06,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:28:06" (1/1) ... [2022-01-10 12:28:06,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218f79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06, skipping insertion in model container [2022-01-10 12:28:06,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:28:06" (1/1) ... [2022-01-10 12:28:06,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:28:06,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:28:06,917 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/minepump_spec5_product54.cil.c[3971,3984] [2022-01-10 12:28:06,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:28:07,002 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:28:07,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:28:07,018 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/minepump_spec5_product54.cil.c[3971,3984] [2022-01-10 12:28:07,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:28:07,078 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:28:07,095 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/minepump_spec5_product54.cil.c[3971,3984] [2022-01-10 12:28:07,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:28:07,142 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:28:07,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07 WrapperNode [2022-01-10 12:28:07,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:28:07,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:28:07,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:28:07,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:28:07,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,214 INFO L137 Inliner]: procedures = 61, calls = 162, calls flagged for inlining = 59, calls inlined = 145, statements flattened = 1044 [2022-01-10 12:28:07,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:28:07,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:28:07,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:28:07,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:28:07,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:28:07,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:28:07,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:28:07,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:28:07,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:28:07,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:28:07,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:28:07,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:28:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:28:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:28:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:28:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:28:07,407 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:28:07,408 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:28:07,779 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:28:07,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:28:07,785 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 12:28:07,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:28:07 BoogieIcfgContainer [2022-01-10 12:28:07,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:28:07,787 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:28:07,788 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:28:07,788 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:28:07,790 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:28:07" (1/1) ... [2022-01-10 12:28:07,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:28:07 BasicIcfg [2022-01-10 12:28:07,890 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:28:07,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:28:07,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:28:07,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:28:07,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:28:06" (1/4) ... [2022-01-10 12:28:07,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efe851a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:28:07, skipping insertion in model container [2022-01-10 12:28:07,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:07" (2/4) ... [2022-01-10 12:28:07,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efe851a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:28:07, skipping insertion in model container [2022-01-10 12:28:07,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:28:07" (3/4) ... [2022-01-10 12:28:07,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efe851a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:28:07, skipping insertion in model container [2022-01-10 12:28:07,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:28:07" (4/4) ... [2022-01-10 12:28:07,894 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.cTransformedIcfg [2022-01-10 12:28:07,906 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:28:07,906 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 12:28:07,946 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:28:07,950 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:28:07,950 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 12:28:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 284 states, 280 states have (on average 1.3785714285714286) internal successors, (386), 283 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 12:28:07,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:07,972 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] [2022-01-10 12:28:07,972 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:07,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:07,975 INFO L85 PathProgramCache]: Analyzing trace with hash 630024251, now seen corresponding path program 1 times [2022-01-10 12:28:07,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:07,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148269148] [2022-01-10 12:28:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:07,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:08,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:08,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148269148] [2022-01-10 12:28:08,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148269148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:08,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:08,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:28:08,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678399541] [2022-01-10 12:28:08,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:08,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:28:08,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:08,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:28:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:28:08,203 INFO L87 Difference]: Start difference. First operand has 284 states, 280 states have (on average 1.3785714285714286) internal successors, (386), 283 states have internal predecessors, (386), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:08,251 INFO L93 Difference]: Finished difference Result 557 states and 760 transitions. [2022-01-10 12:28:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:28:08,253 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-01-10 12:28:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:08,268 INFO L225 Difference]: With dead ends: 557 [2022-01-10 12:28:08,268 INFO L226 Difference]: Without dead ends: 274 [2022-01-10 12:28:08,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:28:08,273 INFO L933 BasicCegarLoop]: 376 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, 376 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:08,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-10 12:28:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-01-10 12:28:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 271 states have (on average 1.3579335793357934) internal successors, (368), 273 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 368 transitions. [2022-01-10 12:28:08,312 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 368 transitions. Word has length 21 [2022-01-10 12:28:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:08,313 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 368 transitions. [2022-01-10 12:28:08,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,313 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 368 transitions. [2022-01-10 12:28:08,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 12:28:08,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:08,314 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] [2022-01-10 12:28:08,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:28:08,314 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:08,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:08,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1254743465, now seen corresponding path program 1 times [2022-01-10 12:28:08,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:08,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635189027] [2022-01-10 12:28:08,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:08,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:08,383 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 12:28:08,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:08,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635189027] [2022-01-10 12:28:08,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635189027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:08,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:08,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:28:08,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195514315] [2022-01-10 12:28:08,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:08,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:28:08,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:08,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:28:08,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:08,386 INFO L87 Difference]: Start difference. First operand 274 states and 368 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:08,413 INFO L93 Difference]: Finished difference Result 540 states and 728 transitions. [2022-01-10 12:28:08,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:28:08,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-01-10 12:28:08,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:08,415 INFO L225 Difference]: With dead ends: 540 [2022-01-10 12:28:08,415 INFO L226 Difference]: Without dead ends: 274 [2022-01-10 12:28:08,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:08,417 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 350 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:08,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 362 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-10 12:28:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-01-10 12:28:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 271 states have (on average 1.3468634686346863) internal successors, (365), 273 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2022-01-10 12:28:08,432 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 22 [2022-01-10 12:28:08,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:08,432 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2022-01-10 12:28:08,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,432 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2022-01-10 12:28:08,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 12:28:08,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:08,433 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] [2022-01-10 12:28:08,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:28:08,433 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:08,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1726703231, now seen corresponding path program 1 times [2022-01-10 12:28:08,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:08,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344975618] [2022-01-10 12:28:08,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:08,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:08,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:08,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344975618] [2022-01-10 12:28:08,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344975618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:08,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:08,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:28:08,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826970309] [2022-01-10 12:28:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:08,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:28:08,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:08,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:28:08,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:08,515 INFO L87 Difference]: Start difference. First operand 274 states and 365 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:08,609 INFO L93 Difference]: Finished difference Result 566 states and 749 transitions. [2022-01-10 12:28:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:28:08,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-01-10 12:28:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:08,613 INFO L225 Difference]: With dead ends: 566 [2022-01-10 12:28:08,613 INFO L226 Difference]: Without dead ends: 300 [2022-01-10 12:28:08,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:08,621 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 184 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:08,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 437 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-10 12:28:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 294. [2022-01-10 12:28:08,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 291 states have (on average 1.2852233676975946) internal successors, (374), 293 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 374 transitions. [2022-01-10 12:28:08,639 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 374 transitions. Word has length 28 [2022-01-10 12:28:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:08,642 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 374 transitions. [2022-01-10 12:28:08,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 374 transitions. [2022-01-10 12:28:08,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 12:28:08,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:08,643 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] [2022-01-10 12:28:08,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:28:08,644 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1538414416, now seen corresponding path program 1 times [2022-01-10 12:28:08,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:08,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316743077] [2022-01-10 12:28:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:08,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:08,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:08,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316743077] [2022-01-10 12:28:08,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316743077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:08,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:08,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:28:08,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266763258] [2022-01-10 12:28:08,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:08,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:28:08,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:08,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:28:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:28:08,788 INFO L87 Difference]: Start difference. First operand 294 states and 374 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:08,964 INFO L93 Difference]: Finished difference Result 779 states and 974 transitions. [2022-01-10 12:28:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:28:08,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-01-10 12:28:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:08,967 INFO L225 Difference]: With dead ends: 779 [2022-01-10 12:28:08,967 INFO L226 Difference]: Without dead ends: 493 [2022-01-10 12:28:08,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:28:08,968 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 477 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:08,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1242 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-10 12:28:08,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 321. [2022-01-10 12:28:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 318 states have (on average 1.2610062893081762) internal successors, (401), 320 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 401 transitions. [2022-01-10 12:28:08,985 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 401 transitions. Word has length 35 [2022-01-10 12:28:08,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:08,985 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 401 transitions. [2022-01-10 12:28:08,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 401 transitions. [2022-01-10 12:28:08,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 12:28:08,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:08,986 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] [2022-01-10 12:28:08,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:28:08,987 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:08,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:08,987 INFO L85 PathProgramCache]: Analyzing trace with hash -129454224, now seen corresponding path program 1 times [2022-01-10 12:28:08,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:08,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37194439] [2022-01-10 12:28:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:08,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:09,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:09,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37194439] [2022-01-10 12:28:09,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37194439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:09,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:09,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:28:09,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487591008] [2022-01-10 12:28:09,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:09,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:28:09,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:09,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:28:09,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:28:09,073 INFO L87 Difference]: Start difference. First operand 321 states and 401 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:09,268 INFO L93 Difference]: Finished difference Result 1110 states and 1370 transitions. [2022-01-10 12:28:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:28:09,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-01-10 12:28:09,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:09,271 INFO L225 Difference]: With dead ends: 1110 [2022-01-10 12:28:09,271 INFO L226 Difference]: Without dead ends: 797 [2022-01-10 12:28:09,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:28:09,272 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 726 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:09,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 1518 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-01-10 12:28:09,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 318. [2022-01-10 12:28:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 315 states have (on average 1.2444444444444445) internal successors, (392), 317 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 392 transitions. [2022-01-10 12:28:09,291 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 392 transitions. Word has length 35 [2022-01-10 12:28:09,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:09,291 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 392 transitions. [2022-01-10 12:28:09,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 392 transitions. [2022-01-10 12:28:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 12:28:09,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:09,292 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] [2022-01-10 12:28:09,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:28:09,293 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:09,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:09,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1249001071, now seen corresponding path program 1 times [2022-01-10 12:28:09,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:09,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766499767] [2022-01-10 12:28:09,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:09,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:09,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:09,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766499767] [2022-01-10 12:28:09,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766499767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:09,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:09,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:28:09,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873843195] [2022-01-10 12:28:09,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:09,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:28:09,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:28:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:28:09,327 INFO L87 Difference]: Start difference. First operand 318 states and 392 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:09,430 INFO L93 Difference]: Finished difference Result 851 states and 1028 transitions. [2022-01-10 12:28:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:28:09,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-01-10 12:28:09,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:09,431 INFO L225 Difference]: With dead ends: 851 [2022-01-10 12:28:09,432 INFO L226 Difference]: Without dead ends: 541 [2022-01-10 12:28:09,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:28:09,433 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 390 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:09,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 866 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:09,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-10 12:28:09,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 336. [2022-01-10 12:28:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 333 states have (on average 1.2312312312312312) internal successors, (410), 335 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 410 transitions. [2022-01-10 12:28:09,454 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 410 transitions. Word has length 35 [2022-01-10 12:28:09,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:09,454 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 410 transitions. [2022-01-10 12:28:09,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 410 transitions. [2022-01-10 12:28:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 12:28:09,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:09,455 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] [2022-01-10 12:28:09,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:28:09,455 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash 104308626, now seen corresponding path program 1 times [2022-01-10 12:28:09,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:09,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170935183] [2022-01-10 12:28:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:09,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:09,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:09,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170935183] [2022-01-10 12:28:09,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170935183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:09,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:09,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:28:09,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474559282] [2022-01-10 12:28:09,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:09,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:28:09,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:09,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:28:09,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:09,492 INFO L87 Difference]: Start difference. First operand 336 states and 410 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:09,504 INFO L93 Difference]: Finished difference Result 336 states and 410 transitions. [2022-01-10 12:28:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:28:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-01-10 12:28:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:09,506 INFO L225 Difference]: With dead ends: 336 [2022-01-10 12:28:09,506 INFO L226 Difference]: Without dead ends: 134 [2022-01-10 12:28:09,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:09,508 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 102 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:09,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 117 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:09,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-01-10 12:28:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-01-10 12:28:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 133 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 166 transitions. [2022-01-10 12:28:09,524 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 166 transitions. Word has length 35 [2022-01-10 12:28:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:09,524 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 166 transitions. [2022-01-10 12:28:09,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 166 transitions. [2022-01-10 12:28:09,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 12:28:09,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:09,525 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] [2022-01-10 12:28:09,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:28:09,525 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:09,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:09,526 INFO L85 PathProgramCache]: Analyzing trace with hash -938542321, now seen corresponding path program 1 times [2022-01-10 12:28:09,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:09,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509852755] [2022-01-10 12:28:09,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:09,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:09,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:09,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509852755] [2022-01-10 12:28:09,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509852755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:09,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:09,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:28:09,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643086199] [2022-01-10 12:28:09,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:09,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:28:09,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:28:09,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:09,611 INFO L87 Difference]: Start difference. First operand 134 states and 166 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:09,635 INFO L93 Difference]: Finished difference Result 298 states and 370 transitions. [2022-01-10 12:28:09,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:28:09,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-10 12:28:09,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:09,636 INFO L225 Difference]: With dead ends: 298 [2022-01-10 12:28:09,636 INFO L226 Difference]: Without dead ends: 172 [2022-01-10 12:28:09,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:09,637 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 26 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:09,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 199 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-10 12:28:09,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-01-10 12:28:09,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.2280701754385965) internal successors, (210), 171 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 210 transitions. [2022-01-10 12:28:09,650 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 210 transitions. Word has length 42 [2022-01-10 12:28:09,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:09,650 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 210 transitions. [2022-01-10 12:28:09,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,650 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 210 transitions. [2022-01-10 12:28:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 12:28:09,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:09,651 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] [2022-01-10 12:28:09,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:28:09,651 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:09,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1022535189, now seen corresponding path program 1 times [2022-01-10 12:28:09,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:09,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20568742] [2022-01-10 12:28:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:09,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:09,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:09,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20568742] [2022-01-10 12:28:09,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20568742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:09,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:09,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:28:09,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614129704] [2022-01-10 12:28:09,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:09,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:28:09,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:28:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:28:09,754 INFO L87 Difference]: Start difference. First operand 172 states and 210 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:09,912 INFO L93 Difference]: Finished difference Result 861 states and 1068 transitions. [2022-01-10 12:28:09,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:28:09,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 12:28:09,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:09,914 INFO L225 Difference]: With dead ends: 861 [2022-01-10 12:28:09,914 INFO L226 Difference]: Without dead ends: 735 [2022-01-10 12:28:09,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:28:09,915 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 530 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:09,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 891 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-01-10 12:28:09,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 303. [2022-01-10 12:28:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.2218543046357615) internal successors, (369), 302 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 369 transitions. [2022-01-10 12:28:09,940 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 369 transitions. Word has length 44 [2022-01-10 12:28:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:09,941 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 369 transitions. [2022-01-10 12:28:09,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 369 transitions. [2022-01-10 12:28:09,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 12:28:09,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:09,942 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:09,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:28:09,942 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:09,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash 564774556, now seen corresponding path program 1 times [2022-01-10 12:28:09,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:09,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966368934] [2022-01-10 12:28:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:09,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:09,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:09,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966368934] [2022-01-10 12:28:09,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966368934] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:28:09,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427071974] [2022-01-10 12:28:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:09,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:28:09,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:28:10,000 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:28:10,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:28:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:10,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 12:28:10,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:28:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:10,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:28:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:10,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427071974] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:28:10,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:28:10,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-10 12:28:10,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911235036] [2022-01-10 12:28:10,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:28:10,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:28:10,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:28:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:28:10,346 INFO L87 Difference]: Start difference. First operand 303 states and 369 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:10,428 INFO L93 Difference]: Finished difference Result 705 states and 882 transitions. [2022-01-10 12:28:10,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:28:10,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 12:28:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:10,430 INFO L225 Difference]: With dead ends: 705 [2022-01-10 12:28:10,430 INFO L226 Difference]: Without dead ends: 410 [2022-01-10 12:28:10,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:28:10,431 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 231 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:10,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 462 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-10 12:28:10,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 263. [2022-01-10 12:28:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.202290076335878) internal successors, (315), 262 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 315 transitions. [2022-01-10 12:28:10,456 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 315 transitions. Word has length 80 [2022-01-10 12:28:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:10,456 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 315 transitions. [2022-01-10 12:28:10,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 315 transitions. [2022-01-10 12:28:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 12:28:10,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:10,457 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:10,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 12:28:10,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 12:28:10,675 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:10,676 INFO L85 PathProgramCache]: Analyzing trace with hash -243494252, now seen corresponding path program 1 times [2022-01-10 12:28:10,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:10,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789512745] [2022-01-10 12:28:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:10,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 76 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-10 12:28:10,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:10,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789512745] [2022-01-10 12:28:10,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789512745] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:28:10,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903646831] [2022-01-10 12:28:10,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:10,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:28:10,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:28:10,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:28:10,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 12:28:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:10,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 12:28:10,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:28:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 12:28:11,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:28:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 12:28:11,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903646831] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:28:11,306 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:28:11,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-10 12:28:11,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618263965] [2022-01-10 12:28:11,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:28:11,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 12:28:11,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:11,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 12:28:11,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:28:11,307 INFO L87 Difference]: Start difference. First operand 263 states and 315 transitions. Second operand has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:12,389 INFO L93 Difference]: Finished difference Result 2901 states and 3510 transitions. [2022-01-10 12:28:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-10 12:28:12,389 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 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 139 [2022-01-10 12:28:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:12,395 INFO L225 Difference]: With dead ends: 2901 [2022-01-10 12:28:12,395 INFO L226 Difference]: Without dead ends: 2489 [2022-01-10 12:28:12,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=748, Invalid=3158, Unknown=0, NotChecked=0, Total=3906 [2022-01-10 12:28:12,397 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 2172 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:12,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2172 Valid, 1779 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:28:12,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2022-01-10 12:28:12,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 636. [2022-01-10 12:28:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.1748031496062992) internal successors, (746), 635 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 746 transitions. [2022-01-10 12:28:12,456 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 746 transitions. Word has length 139 [2022-01-10 12:28:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:12,457 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 746 transitions. [2022-01-10 12:28:12,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 746 transitions. [2022-01-10 12:28:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 12:28:12,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:12,458 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:12,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 12:28:12,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 12:28:12,675 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:12,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2138407232, now seen corresponding path program 1 times [2022-01-10 12:28:12,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:12,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495088958] [2022-01-10 12:28:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:12,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 12:28:12,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:12,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495088958] [2022-01-10 12:28:12,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495088958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:12,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:12,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:28:12,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737733404] [2022-01-10 12:28:12,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:12,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:28:12,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:28:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:28:12,758 INFO L87 Difference]: Start difference. First operand 636 states and 746 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:12,940 INFO L93 Difference]: Finished difference Result 1853 states and 2181 transitions. [2022-01-10 12:28:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:28:12,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 12:28:12,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:12,943 INFO L225 Difference]: With dead ends: 1853 [2022-01-10 12:28:12,943 INFO L226 Difference]: Without dead ends: 1225 [2022-01-10 12:28:12,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:28:12,944 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 385 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:12,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 778 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-01-10 12:28:12,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 585. [2022-01-10 12:28:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.1592465753424657) internal successors, (677), 584 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 677 transitions. [2022-01-10 12:28:13,000 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 677 transitions. Word has length 143 [2022-01-10 12:28:13,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:13,000 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 677 transitions. [2022-01-10 12:28:13,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:13,001 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 677 transitions. [2022-01-10 12:28:13,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 12:28:13,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:13,002 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:13,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:28:13,002 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:13,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1559270656, now seen corresponding path program 2 times [2022-01-10 12:28:13,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:13,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161523299] [2022-01-10 12:28:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:13,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 12:28:13,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:13,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161523299] [2022-01-10 12:28:13,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161523299] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:28:13,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209190236] [2022-01-10 12:28:13,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 12:28:13,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:28:13,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:28:13,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:28:13,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 12:28:13,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 12:28:13,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 12:28:13,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 12:28:13,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:28:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 12:28:13,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 12:28:13,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209190236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:13,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 12:28:13,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-01-10 12:28:13,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145524486] [2022-01-10 12:28:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:13,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:28:13,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:28:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:28:13,550 INFO L87 Difference]: Start difference. First operand 585 states and 677 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:13,913 INFO L93 Difference]: Finished difference Result 1827 states and 2125 transitions. [2022-01-10 12:28:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:28:13,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 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 143 [2022-01-10 12:28:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:13,917 INFO L225 Difference]: With dead ends: 1827 [2022-01-10 12:28:13,917 INFO L226 Difference]: Without dead ends: 1479 [2022-01-10 12:28:13,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-01-10 12:28:13,920 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 532 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:13,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 810 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2022-01-10 12:28:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 742. [2022-01-10 12:28:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.1511470985155197) internal successors, (853), 741 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 853 transitions. [2022-01-10 12:28:14,030 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 853 transitions. Word has length 143 [2022-01-10 12:28:14,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:14,030 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 853 transitions. [2022-01-10 12:28:14,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:14,031 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 853 transitions. [2022-01-10 12:28:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 12:28:14,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:14,032 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:14,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 12:28:14,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:28:14,248 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1439150783, now seen corresponding path program 1 times [2022-01-10 12:28:14,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:14,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470430324] [2022-01-10 12:28:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:14,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-10 12:28:14,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:14,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470430324] [2022-01-10 12:28:14,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470430324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:14,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:14,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:28:14,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128736986] [2022-01-10 12:28:14,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:14,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:28:14,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:14,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:28:14,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:28:14,303 INFO L87 Difference]: Start difference. First operand 742 states and 853 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:14,388 INFO L93 Difference]: Finished difference Result 1348 states and 1541 transitions. [2022-01-10 12:28:14,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:28:14,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 143 [2022-01-10 12:28:14,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:14,389 INFO L225 Difference]: With dead ends: 1348 [2022-01-10 12:28:14,389 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:28:14,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:28:14,390 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 224 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:14,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 531 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:14,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:28:14,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:28:14,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:28:14,391 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2022-01-10 12:28:14,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:14,391 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:28:14,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:28:14,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:28:14,393 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 12:28:14,393 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 12:28:14,393 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 12:28:14,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:28:14,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 12:28:24,886 WARN L228 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 238 DAG size of output: 236 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:28:39,594 WARN L228 SmtUtils]: Spent 14.71s on a formula simplification. DAG size of input: 227 DAG size of output: 224 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:28:47,033 WARN L228 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 169 DAG size of output: 164 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:29:03,950 WARN L228 SmtUtils]: Spent 13.67s on a formula simplification. DAG size of input: 248 DAG size of output: 246 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:29:10,464 WARN L228 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 168 DAG size of output: 163 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:29:16,076 WARN L228 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 143 DAG size of output: 140 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)