/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_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:53:14,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:53:14,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:53:14,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:53:14,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:53:14,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:53:14,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:53:14,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:53:14,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:53:14,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:53:14,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:53:14,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:53:14,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:53:14,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:53:14,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:53:14,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:53:14,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:53:14,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:53:14,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:53:14,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:53:14,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:53:14,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:53:14,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:53:14,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:53:14,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:53:14,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:53:14,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:53:14,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:53:14,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:53:14,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:53:14,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:53:14,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:53:14,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:53:14,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:53:14,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:53:14,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:53:14,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:53:14,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:53:14,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:53:14,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:53:14,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:53:14,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:53:14,620 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:53:14,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:53:14,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:53:14,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:53:14,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:53:14,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:53:14,622 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:53:14,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:53:14,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:53:14,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:53:14,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:53:14,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:53:14,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:53:14,622 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:53:14,622 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:53:14,623 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:53:14,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:53:14,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:53:14,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:53:14,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:53:14,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:53:14,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:53:14,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:53:14,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:53:14,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:53:14,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:53:14,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:53:14,625 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:53:14,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:53:14,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:53:14,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:53:14,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:53:14,626 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:53:14,626 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:53:14,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:53:14,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:53:14,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:53:14,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:53:14,867 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:53:14,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2022-01-11 05:53:14,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7fc651a/95cd34c7268945d9a73e1e2ebccd0732/FLAG5479038ba [2022-01-11 05:53:15,272 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:53:15,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2022-01-11 05:53:15,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7fc651a/95cd34c7268945d9a73e1e2ebccd0732/FLAG5479038ba [2022-01-11 05:53:15,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7fc651a/95cd34c7268945d9a73e1e2ebccd0732 [2022-01-11 05:53:15,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:53:15,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:53:15,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:53:15,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:53:15,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:53:15,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:53:15" (1/1) ... [2022-01-11 05:53:15,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b95610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:15, skipping insertion in model container [2022-01-11 05:53:15,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:53:15" (1/1) ... [2022-01-11 05:53:15,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:53:15,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:53:15,891 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_spec3_product53.cil.c[1605,1618] [2022-01-11 05:53:16,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:53:16,017 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:53:16,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:53:16,032 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_spec3_product53.cil.c[1605,1618] [2022-01-11 05:53:16,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:53:16,096 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:53:16,111 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_spec3_product53.cil.c[1605,1618] [2022-01-11 05:53:16,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:53:16,163 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:53:16,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16 WrapperNode [2022-01-11 05:53:16,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:53:16,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:53:16,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:53:16,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:53:16,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:16,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:16,232 INFO L137 Inliner]: procedures = 58, calls = 159, calls flagged for inlining = 56, calls inlined = 140, statements flattened = 1034 [2022-01-11 05:53:16,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:53:16,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:53:16,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:53:16,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:53:16,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:16,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:16,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:16,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:16,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:16,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:16,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:16,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:53:16,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:53:16,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:53:16,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:53:16,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:16,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:53:16,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:53:16,303 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) [2022-01-11 05:53:16,311 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 [2022-01-11 05:53:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:53:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:53:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:53:16,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:53:16,420 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:53:16,421 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:53:16,948 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:53:16,961 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:53:16,961 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 05:53:16,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:53:16 BoogieIcfgContainer [2022-01-11 05:53:16,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:53:16,964 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:53:16,964 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:53:16,966 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:53:16,968 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:53:16" (1/1) ... [2022-01-11 05:53:17,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:53:17 BasicIcfg [2022-01-11 05:53:17,128 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:53:17,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:53:17,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:53:17,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:53:17,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:53:15" (1/4) ... [2022-01-11 05:53:17,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60216459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:53:17, skipping insertion in model container [2022-01-11 05:53:17,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:16" (2/4) ... [2022-01-11 05:53:17,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60216459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:53:17, skipping insertion in model container [2022-01-11 05:53:17,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:53:16" (3/4) ... [2022-01-11 05:53:17,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60216459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:53:17, skipping insertion in model container [2022-01-11 05:53:17,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:53:17" (4/4) ... [2022-01-11 05:53:17,133 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.cTransformedIcfg [2022-01-11 05:53:17,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:53:17,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 05:53:17,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:53:17,169 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 [2022-01-11 05:53:17,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 05:53:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 275 states have (on average 1.3854545454545455) internal successors, (381), 278 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:17,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 05:53:17,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:17,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:17,190 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:17,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:17,193 INFO L85 PathProgramCache]: Analyzing trace with hash -658118, now seen corresponding path program 1 times [2022-01-11 05:53:17,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:17,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188498121] [2022-01-11 05:53:17,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:17,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:17,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:17,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188498121] [2022-01-11 05:53:17,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188498121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:17,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:17,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:53:17,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799205937] [2022-01-11 05:53:17,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:17,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:53:17,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:17,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:53:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:53:17,387 INFO L87 Difference]: Start difference. First operand has 279 states, 275 states have (on average 1.3854545454545455) internal successors, (381), 278 states have internal predecessors, (381), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:17,425 INFO L93 Difference]: Finished difference Result 548 states and 751 transitions. [2022-01-11 05:53:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:53:17,426 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-01-11 05:53:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:17,433 INFO L225 Difference]: With dead ends: 548 [2022-01-11 05:53:17,433 INFO L226 Difference]: Without dead ends: 269 [2022-01-11 05:53:17,436 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 [2022-01-11 05:53:17,438 INFO L933 BasicCegarLoop]: 371 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, 371 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 [2022-01-11 05:53:17,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:17,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-11 05:53:17,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-01-11 05:53:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 266 states have (on average 1.3646616541353382) internal successors, (363), 268 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 363 transitions. [2022-01-11 05:53:17,474 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 363 transitions. Word has length 19 [2022-01-11 05:53:17,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:17,475 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 363 transitions. [2022-01-11 05:53:17,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 363 transitions. [2022-01-11 05:53:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 05:53:17,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:17,476 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] [2022-01-11 05:53:17,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:53:17,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:17,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:17,477 INFO L85 PathProgramCache]: Analyzing trace with hash -78394691, now seen corresponding path program 1 times [2022-01-11 05:53:17,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:17,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991877179] [2022-01-11 05:53:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:17,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:17,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:17,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991877179] [2022-01-11 05:53:17,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991877179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:17,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:17,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:53:17,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402930799] [2022-01-11 05:53:17,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:17,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:53:17,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:17,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:53:17,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:53:17,621 INFO L87 Difference]: Start difference. First operand 269 states and 363 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:17,666 INFO L93 Difference]: Finished difference Result 531 states and 719 transitions. [2022-01-11 05:53:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:53:17,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-01-11 05:53:17,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:17,668 INFO L225 Difference]: With dead ends: 531 [2022-01-11 05:53:17,668 INFO L226 Difference]: Without dead ends: 269 [2022-01-11 05:53:17,669 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 [2022-01-11 05:53:17,670 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 349 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:17,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 357 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:17,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-11 05:53:17,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-01-11 05:53:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 266 states have (on average 1.3533834586466165) internal successors, (360), 268 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 360 transitions. [2022-01-11 05:53:17,685 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 360 transitions. Word has length 20 [2022-01-11 05:53:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:17,685 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 360 transitions. [2022-01-11 05:53:17,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 360 transitions. [2022-01-11 05:53:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-11 05:53:17,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:17,687 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] [2022-01-11 05:53:17,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:53:17,687 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:17,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:17,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1434019177, now seen corresponding path program 1 times [2022-01-11 05:53:17,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:17,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440633741] [2022-01-11 05:53:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:17,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:17,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:17,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440633741] [2022-01-11 05:53:17,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440633741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:17,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:17,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:53:17,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712333560] [2022-01-11 05:53:17,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:17,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:53:17,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:53:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:53:17,758 INFO L87 Difference]: Start difference. First operand 269 states and 360 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:17,865 INFO L93 Difference]: Finished difference Result 553 states and 736 transitions. [2022-01-11 05:53:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:53:17,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-01-11 05:53:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:17,870 INFO L225 Difference]: With dead ends: 553 [2022-01-11 05:53:17,870 INFO L226 Difference]: Without dead ends: 291 [2022-01-11 05:53:17,877 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 [2022-01-11 05:53:17,879 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 182 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:17,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 434 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-01-11 05:53:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 285. [2022-01-11 05:53:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 282 states have (on average 1.2943262411347518) internal successors, (365), 284 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) [2022-01-11 05:53:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 365 transitions. [2022-01-11 05:53:17,905 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 365 transitions. Word has length 26 [2022-01-11 05:53:17,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:17,906 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 365 transitions. [2022-01-11 05:53:17,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:17,906 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 365 transitions. [2022-01-11 05:53:17,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 05:53:17,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:17,911 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] [2022-01-11 05:53:17,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:53:17,912 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:17,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:17,912 INFO L85 PathProgramCache]: Analyzing trace with hash 834482979, now seen corresponding path program 1 times [2022-01-11 05:53:17,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:17,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056602763] [2022-01-11 05:53:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:17,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:18,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:18,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056602763] [2022-01-11 05:53:18,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056602763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:18,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:18,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:18,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640399490] [2022-01-11 05:53:18,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:18,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:18,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:18,003 INFO L87 Difference]: Start difference. First operand 285 states and 365 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:18,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:18,188 INFO L93 Difference]: Finished difference Result 754 states and 949 transitions. [2022-01-11 05:53:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:53:18,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-11 05:53:18,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:18,190 INFO L225 Difference]: With dead ends: 754 [2022-01-11 05:53:18,190 INFO L226 Difference]: Without dead ends: 476 [2022-01-11 05:53:18,191 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 [2022-01-11 05:53:18,199 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 464 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1204 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 [2022-01-11 05:53:18,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1204 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-01-11 05:53:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 312. [2022-01-11 05:53:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 309 states have (on average 1.2686084142394822) internal successors, (392), 311 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) [2022-01-11 05:53:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 392 transitions. [2022-01-11 05:53:18,219 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 392 transitions. Word has length 33 [2022-01-11 05:53:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:18,220 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 392 transitions. [2022-01-11 05:53:18,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:18,220 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 392 transitions. [2022-01-11 05:53:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 05:53:18,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:18,221 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] [2022-01-11 05:53:18,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:53:18,221 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 670162691, now seen corresponding path program 1 times [2022-01-11 05:53:18,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:18,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195576639] [2022-01-11 05:53:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:18,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:18,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:18,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195576639] [2022-01-11 05:53:18,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195576639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:18,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:18,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:53:18,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711543000] [2022-01-11 05:53:18,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:18,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:18,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:18,307 INFO L87 Difference]: Start difference. First operand 312 states and 392 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:18,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:18,576 INFO L93 Difference]: Finished difference Result 1800 states and 2269 transitions. [2022-01-11 05:53:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:53:18,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-11 05:53:18,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:18,580 INFO L225 Difference]: With dead ends: 1800 [2022-01-11 05:53:18,581 INFO L226 Difference]: Without dead ends: 991 [2022-01-11 05:53:18,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:53:18,582 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 1311 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:18,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 1643 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:53:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-11 05:53:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 421. [2022-01-11 05:53:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 418 states have (on average 1.2607655502392345) internal successors, (527), 420 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 527 transitions. [2022-01-11 05:53:18,647 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 527 transitions. Word has length 33 [2022-01-11 05:53:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:18,650 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 527 transitions. [2022-01-11 05:53:18,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:18,651 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 527 transitions. [2022-01-11 05:53:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 05:53:18,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:18,654 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] [2022-01-11 05:53:18,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:53:18,654 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash 316911433, now seen corresponding path program 1 times [2022-01-11 05:53:18,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:18,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765764227] [2022-01-11 05:53:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:18,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:18,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:18,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765764227] [2022-01-11 05:53:18,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765764227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:18,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:18,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:53:18,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218494375] [2022-01-11 05:53:18,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:18,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:53:18,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:18,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:53:18,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:53:18,756 INFO L87 Difference]: Start difference. First operand 421 states and 527 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:18,979 INFO L93 Difference]: Finished difference Result 1147 states and 1431 transitions. [2022-01-11 05:53:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:53:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-11 05:53:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:18,981 INFO L225 Difference]: With dead ends: 1147 [2022-01-11 05:53:18,982 INFO L226 Difference]: Without dead ends: 733 [2022-01-11 05:53:18,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:53:18,983 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 212 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:18,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 2206 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:53:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-01-11 05:53:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 727. [2022-01-11 05:53:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 724 states have (on average 1.2417127071823204) internal successors, (899), 726 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 899 transitions. [2022-01-11 05:53:19,042 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 899 transitions. Word has length 41 [2022-01-11 05:53:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:19,043 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 899 transitions. [2022-01-11 05:53:19,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,043 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 899 transitions. [2022-01-11 05:53:19,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 05:53:19,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:19,044 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] [2022-01-11 05:53:19,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:53:19,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:19,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash -680160920, now seen corresponding path program 1 times [2022-01-11 05:53:19,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:19,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048443755] [2022-01-11 05:53:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:19,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:19,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:19,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048443755] [2022-01-11 05:53:19,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048443755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:19,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:19,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:53:19,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770041622] [2022-01-11 05:53:19,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:19,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:53:19,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:19,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:53:19,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:53:19,106 INFO L87 Difference]: Start difference. First operand 727 states and 899 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:19,306 INFO L93 Difference]: Finished difference Result 1628 states and 2022 transitions. [2022-01-11 05:53:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:53:19,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-11 05:53:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:19,310 INFO L225 Difference]: With dead ends: 1628 [2022-01-11 05:53:19,311 INFO L226 Difference]: Without dead ends: 1081 [2022-01-11 05:53:19,312 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 [2022-01-11 05:53:19,312 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 537 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:19,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 1001 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:19,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-01-11 05:53:19,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 700. [2022-01-11 05:53:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 697 states have (on average 1.2381635581061694) internal successors, (863), 699 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 863 transitions. [2022-01-11 05:53:19,372 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 863 transitions. Word has length 41 [2022-01-11 05:53:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:19,372 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 863 transitions. [2022-01-11 05:53:19,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 863 transitions. [2022-01-11 05:53:19,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 05:53:19,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:19,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:19,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:53:19,373 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:19,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1026374809, now seen corresponding path program 1 times [2022-01-11 05:53:19,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:19,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318569448] [2022-01-11 05:53:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:19,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:19,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:19,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318569448] [2022-01-11 05:53:19,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318569448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:19,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:19,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:19,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153219916] [2022-01-11 05:53:19,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:19,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:19,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:19,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:19,409 INFO L87 Difference]: Start difference. First operand 700 states and 863 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:19,644 INFO L93 Difference]: Finished difference Result 1897 states and 2349 transitions. [2022-01-11 05:53:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:53:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-11 05:53:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:19,648 INFO L225 Difference]: With dead ends: 1897 [2022-01-11 05:53:19,648 INFO L226 Difference]: Without dead ends: 1204 [2022-01-11 05:53:19,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:53:19,649 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 595 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:19,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 1603 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-01-11 05:53:19,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 536. [2022-01-11 05:53:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 533 states have (on average 1.2101313320825515) internal successors, (645), 535 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 645 transitions. [2022-01-11 05:53:19,697 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 645 transitions. Word has length 41 [2022-01-11 05:53:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:19,699 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 645 transitions. [2022-01-11 05:53:19,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 645 transitions. [2022-01-11 05:53:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 05:53:19,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:19,701 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] [2022-01-11 05:53:19,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:53:19,701 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:19,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1190695097, now seen corresponding path program 1 times [2022-01-11 05:53:19,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:19,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649981687] [2022-01-11 05:53:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:19,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:19,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:19,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649981687] [2022-01-11 05:53:19,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649981687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:19,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:19,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:19,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003916092] [2022-01-11 05:53:19,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:19,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:19,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:19,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:19,759 INFO L87 Difference]: Start difference. First operand 536 states and 645 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:19,862 INFO L93 Difference]: Finished difference Result 1368 states and 1660 transitions. [2022-01-11 05:53:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:53:19,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-11 05:53:19,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:19,865 INFO L225 Difference]: With dead ends: 1368 [2022-01-11 05:53:19,866 INFO L226 Difference]: Without dead ends: 839 [2022-01-11 05:53:19,866 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 [2022-01-11 05:53:19,868 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 709 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:19,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 731 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:19,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-01-11 05:53:19,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 475. [2022-01-11 05:53:19,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 472 states have (on average 1.1970338983050848) internal successors, (565), 474 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 565 transitions. [2022-01-11 05:53:19,911 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 565 transitions. Word has length 41 [2022-01-11 05:53:19,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:19,911 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 565 transitions. [2022-01-11 05:53:19,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,911 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 565 transitions. [2022-01-11 05:53:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 05:53:19,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:19,912 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:19,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:53:19,912 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:19,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:19,913 INFO L85 PathProgramCache]: Analyzing trace with hash 188300540, now seen corresponding path program 1 times [2022-01-11 05:53:19,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:19,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191907325] [2022-01-11 05:53:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:19,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:19,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:19,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191907325] [2022-01-11 05:53:19,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191907325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:19,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:19,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:53:19,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211421714] [2022-01-11 05:53:19,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:19,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:53:19,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:19,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:53:19,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:53:19,948 INFO L87 Difference]: Start difference. First operand 475 states and 565 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:19,983 INFO L93 Difference]: Finished difference Result 475 states and 565 transitions. [2022-01-11 05:53:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:53:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-11 05:53:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:19,985 INFO L225 Difference]: With dead ends: 475 [2022-01-11 05:53:19,985 INFO L226 Difference]: Without dead ends: 294 [2022-01-11 05:53:19,985 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 [2022-01-11 05:53:19,985 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 44 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:19,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 87 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-11 05:53:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2022-01-11 05:53:20,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.2184300341296928) internal successors, (357), 293 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 357 transitions. [2022-01-11 05:53:20,015 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 357 transitions. Word has length 59 [2022-01-11 05:53:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:20,015 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 357 transitions. [2022-01-11 05:53:20,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 357 transitions. [2022-01-11 05:53:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 05:53:20,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:20,016 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 05:53:20,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:53:20,016 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:20,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1456385293, now seen corresponding path program 1 times [2022-01-11 05:53:20,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:20,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084909893] [2022-01-11 05:53:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:20,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:20,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:20,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084909893] [2022-01-11 05:53:20,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084909893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:20,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:20,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:53:20,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707476965] [2022-01-11 05:53:20,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:20,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:20,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:20,068 INFO L87 Difference]: Start difference. First operand 294 states and 357 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:20,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:20,225 INFO L93 Difference]: Finished difference Result 1589 states and 1908 transitions. [2022-01-11 05:53:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 05:53:20,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-11 05:53:20,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:20,230 INFO L225 Difference]: With dead ends: 1589 [2022-01-11 05:53:20,230 INFO L226 Difference]: Without dead ends: 1302 [2022-01-11 05:53:20,230 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 [2022-01-11 05:53:20,231 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 323 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:20,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 572 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-01-11 05:53:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 579. [2022-01-11 05:53:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.1955017301038062) internal successors, (691), 578 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 691 transitions. [2022-01-11 05:53:20,299 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 691 transitions. Word has length 65 [2022-01-11 05:53:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:20,300 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 691 transitions. [2022-01-11 05:53:20,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 691 transitions. [2022-01-11 05:53:20,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 05:53:20,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:20,301 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 05:53:20,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:53:20,301 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1337502455, now seen corresponding path program 1 times [2022-01-11 05:53:20,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:20,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679814535] [2022-01-11 05:53:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:20,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 05:53:20,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:20,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679814535] [2022-01-11 05:53:20,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679814535] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:53:20,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923285409] [2022-01-11 05:53:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:20,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:53:20,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:53:20,360 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) [2022-01-11 05:53:20,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 05:53:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:20,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-11 05:53:20,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:53:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 05:53:20,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:53:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 05:53:20,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923285409] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:53:20,710 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:53:20,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-11 05:53:20,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824436703] [2022-01-11 05:53:20,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:53:20,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:20,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:20,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:20,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:20,711 INFO L87 Difference]: Start difference. First operand 579 states and 691 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:20,868 INFO L93 Difference]: Finished difference Result 1479 states and 1755 transitions. [2022-01-11 05:53:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:53:20,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 05:53:20,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:20,872 INFO L225 Difference]: With dead ends: 1479 [2022-01-11 05:53:20,872 INFO L226 Difference]: Without dead ends: 907 [2022-01-11 05:53:20,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:53:20,874 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 263 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:20,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 509 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-01-11 05:53:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 559. [2022-01-11 05:53:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.168458781362007) internal successors, (652), 558 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 652 transitions. [2022-01-11 05:53:20,958 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 652 transitions. Word has length 67 [2022-01-11 05:53:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:20,958 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 652 transitions. [2022-01-11 05:53:20,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 652 transitions. [2022-01-11 05:53:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 05:53:20,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:20,960 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 05:53:20,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 05:53:21,175 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,SelfDestructingSolverStorable11 [2022-01-11 05:53:21,176 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:21,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:21,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1864567303, now seen corresponding path program 1 times [2022-01-11 05:53:21,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:21,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208328459] [2022-01-11 05:53:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:21,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 05:53:21,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:21,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208328459] [2022-01-11 05:53:21,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208328459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:21,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:21,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:21,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936480177] [2022-01-11 05:53:21,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:21,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:53:21,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:21,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:53:21,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:53:21,249 INFO L87 Difference]: Start difference. First operand 559 states and 652 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:21,471 INFO L93 Difference]: Finished difference Result 2149 states and 2543 transitions. [2022-01-11 05:53:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:53:21,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 05:53:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:21,477 INFO L225 Difference]: With dead ends: 2149 [2022-01-11 05:53:21,477 INFO L226 Difference]: Without dead ends: 1721 [2022-01-11 05:53:21,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:53:21,478 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 344 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:21,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 925 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:21,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2022-01-11 05:53:21,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 557. [2022-01-11 05:53:21,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.1654676258992807) internal successors, (648), 556 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 648 transitions. [2022-01-11 05:53:21,538 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 648 transitions. Word has length 67 [2022-01-11 05:53:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:21,538 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 648 transitions. [2022-01-11 05:53:21,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 648 transitions. [2022-01-11 05:53:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 05:53:21,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:21,541 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 05:53:21,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:53:21,541 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:21,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:21,541 INFO L85 PathProgramCache]: Analyzing trace with hash -444448171, now seen corresponding path program 1 times [2022-01-11 05:53:21,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:21,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249507846] [2022-01-11 05:53:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:21,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 05:53:21,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:21,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249507846] [2022-01-11 05:53:21,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249507846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:21,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:21,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:21,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654844872] [2022-01-11 05:53:21,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:21,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:21,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:21,615 INFO L87 Difference]: Start difference. First operand 557 states and 648 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:21,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:21,815 INFO L93 Difference]: Finished difference Result 1829 states and 2160 transitions. [2022-01-11 05:53:21,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:53:21,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-11 05:53:21,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:21,820 INFO L225 Difference]: With dead ends: 1829 [2022-01-11 05:53:21,820 INFO L226 Difference]: Without dead ends: 1403 [2022-01-11 05:53:21,820 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 [2022-01-11 05:53:21,821 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 322 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:21,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 523 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:21,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-01-11 05:53:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 569. [2022-01-11 05:53:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.1619718309859155) internal successors, (660), 568 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 660 transitions. [2022-01-11 05:53:21,881 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 660 transitions. Word has length 74 [2022-01-11 05:53:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:21,882 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 660 transitions. [2022-01-11 05:53:21,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 660 transitions. [2022-01-11 05:53:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 05:53:21,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:21,885 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 05:53:21,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:53:21,885 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:21,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:21,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1063103638, now seen corresponding path program 1 times [2022-01-11 05:53:21,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:21,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302812852] [2022-01-11 05:53:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:21,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:21,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:21,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302812852] [2022-01-11 05:53:21,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302812852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:21,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:21,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:21,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210249584] [2022-01-11 05:53:21,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:21,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:53:21,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:21,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:53:21,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:53:21,982 INFO L87 Difference]: Start difference. First operand 569 states and 660 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:22,296 INFO L93 Difference]: Finished difference Result 2073 states and 2442 transitions. [2022-01-11 05:53:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 05:53:22,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-11 05:53:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:22,302 INFO L225 Difference]: With dead ends: 2073 [2022-01-11 05:53:22,302 INFO L226 Difference]: Without dead ends: 1802 [2022-01-11 05:53:22,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-11 05:53:22,305 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 460 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:22,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1107 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:22,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-01-11 05:53:22,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 810. [2022-01-11 05:53:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 1.1557478368355996) internal successors, (935), 809 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 935 transitions. [2022-01-11 05:53:22,413 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 935 transitions. Word has length 74 [2022-01-11 05:53:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:22,413 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 935 transitions. [2022-01-11 05:53:22,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 935 transitions. [2022-01-11 05:53:22,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 05:53:22,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:22,415 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 05:53:22,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:53:22,415 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:22,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash 211213793, now seen corresponding path program 1 times [2022-01-11 05:53:22,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:22,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13020929] [2022-01-11 05:53:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:22,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 05:53:22,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:22,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13020929] [2022-01-11 05:53:22,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13020929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:22,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:22,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:53:22,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474529075] [2022-01-11 05:53:22,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:22,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:53:22,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:22,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:53:22,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:53:22,454 INFO L87 Difference]: Start difference. First operand 810 states and 935 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:22,545 INFO L93 Difference]: Finished difference Result 1492 states and 1738 transitions. [2022-01-11 05:53:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:53:22,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-11 05:53:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:22,548 INFO L225 Difference]: With dead ends: 1492 [2022-01-11 05:53:22,548 INFO L226 Difference]: Without dead ends: 755 [2022-01-11 05:53:22,549 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 [2022-01-11 05:53:22,549 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 91 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:22,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 260 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-01-11 05:53:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 565. [2022-01-11 05:53:22,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.1542553191489362) internal successors, (651), 564 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 651 transitions. [2022-01-11 05:53:22,635 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 651 transitions. Word has length 74 [2022-01-11 05:53:22,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:22,636 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 651 transitions. [2022-01-11 05:53:22,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 651 transitions. [2022-01-11 05:53:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 05:53:22,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:22,636 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 05:53:22,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:53:22,637 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1485307357, now seen corresponding path program 1 times [2022-01-11 05:53:22,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:22,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789770750] [2022-01-11 05:53:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:22,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 05:53:22,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:22,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789770750] [2022-01-11 05:53:22,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789770750] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:53:22,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239024550] [2022-01-11 05:53:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:22,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:53:22,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:53:22,723 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) [2022-01-11 05:53:22,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 05:53:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:22,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-11 05:53:22,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:53:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 05:53:23,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:53:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 05:53:23,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239024550] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:53:23,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:53:23,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 14 [2022-01-11 05:53:23,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940112906] [2022-01-11 05:53:23,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:53:23,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 05:53:23,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:23,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 05:53:23,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:53:23,512 INFO L87 Difference]: Start difference. First operand 565 states and 651 transitions. Second operand has 15 states, 15 states have (on average 12.866666666666667) internal successors, (193), 14 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:24,391 INFO L93 Difference]: Finished difference Result 2986 states and 3509 transitions. [2022-01-11 05:53:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-11 05:53:24,392 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.866666666666667) internal successors, (193), 14 states have internal predecessors, (193), 0 states have call successors, (0), 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 76 [2022-01-11 05:53:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:24,393 INFO L225 Difference]: With dead ends: 2986 [2022-01-11 05:53:24,393 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 05:53:24,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2022-01-11 05:53:24,396 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 1006 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:24,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 2053 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:53:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 05:53:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 05:53:24,397 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) [2022-01-11 05:53:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 05:53:24,397 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-01-11 05:53:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:24,397 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 05:53:24,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.866666666666667) internal successors, (193), 14 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 05:53:24,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 05:53:24,400 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-11 05:53:24,400 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-11 05:53:24,400 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-11 05:53:24,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 05:53:24,615 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,SelfDestructingSolverStorable16 [2022-01-11 05:53:24,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 05:54:20,414 WARN L228 SmtUtils]: Spent 49.19s on a formula simplification. DAG size of input: 301 DAG size of output: 298 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 05:54:26,323 WARN L228 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 198 DAG size of output: 195 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)