/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:27:59,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:27:59,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:27:59,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:27:59,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:27:59,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:27:59,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:27:59,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:27:59,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:27:59,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:27:59,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:27:59,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:27:59,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:27:59,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:27:59,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:27:59,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:27:59,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:27:59,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:27:59,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:27:59,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:27:59,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:27:59,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:27:59,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:27:59,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:27:59,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:27:59,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:27:59,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:27:59,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:27:59,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:27:59,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:27:59,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:27:59,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:27:59,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:27:59,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:27:59,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:27:59,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:27:59,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:27:59,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:27:59,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:27:59,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:27:59,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:27:59,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:27:59,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:27:59,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:27:59,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:27:59,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:27:59,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:27:59,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:27:59,391 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:27:59,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:27:59,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:27:59,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:27:59,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:27:59,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:27:59,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:27:59,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:27:59,392 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:27:59,392 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:27:59,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:27:59,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:27:59,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:27:59,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:27:59,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:27:59,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:27:59,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:27:59,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:27:59,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:27:59,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:27:59,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:27:59,393 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:27:59,393 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:27:59,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:27:59,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:27:59,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:27:59,395 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:27:59,395 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:27:59,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:27:59,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:27:59,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:27:59,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:27:59,614 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:27:59,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2022-01-10 12:27:59,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad2172b3/c04267fbcc904386b92ab8671cb5de17/FLAGd62aa0f96 [2022-01-10 12:27:59,999 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:28:00,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2022-01-10 12:28:00,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad2172b3/c04267fbcc904386b92ab8671cb5de17/FLAGd62aa0f96 [2022-01-10 12:28:00,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad2172b3/c04267fbcc904386b92ab8671cb5de17 [2022-01-10 12:28:00,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:28:00,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:28:00,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:28:00,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:28:00,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:28:00,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404cff16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00, skipping insertion in model container [2022-01-10 12:28:00,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:28:00,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:28:00,644 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2022-01-10 12:28:00,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:28:00,666 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:28:00,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:28:00,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2022-01-10 12:28:00,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:28:00,730 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:28:00,773 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2022-01-10 12:28:00,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:28:00,794 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:28:00,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00 WrapperNode [2022-01-10 12:28:00,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:28:00,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:28:00,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:28:00,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:28:00,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,884 INFO L137 Inliner]: procedures = 60, calls = 161, calls flagged for inlining = 58, calls inlined = 144, statements flattened = 1041 [2022-01-10 12:28:00,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:28:00,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:28:00,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:28:00,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:28:00,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:28:00,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:28:00,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:28:00,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:28:00,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (1/1) ... [2022-01-10 12:28:00,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:28:00,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:28:00,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:28:00,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:28:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:28:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:28:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:28:01,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:28:01,100 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:28:01,112 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:28:01,621 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:28:01,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:28:01,630 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 12:28:01,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:28:01 BoogieIcfgContainer [2022-01-10 12:28:01,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:28:01,632 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:28:01,632 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:28:01,633 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:28:01,635 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:28:01" (1/1) ... [2022-01-10 12:28:01,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:28:01 BasicIcfg [2022-01-10 12:28:01,795 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:28:01,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:28:01,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:28:01,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:28:01,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:28:00" (1/4) ... [2022-01-10 12:28:01,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb8e0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:28:01, skipping insertion in model container [2022-01-10 12:28:01,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:00" (2/4) ... [2022-01-10 12:28:01,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb8e0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:28:01, skipping insertion in model container [2022-01-10 12:28:01,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:28:01" (3/4) ... [2022-01-10 12:28:01,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb8e0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:28:01, skipping insertion in model container [2022-01-10 12:28:01,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:28:01" (4/4) ... [2022-01-10 12:28:01,800 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.cTransformedIcfg [2022-01-10 12:28:01,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:28:01,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 12:28:01,832 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:28:01,836 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:28:01,836 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 12:28:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 279 states have (on average 1.3799283154121864) internal successors, (385), 282 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 12:28:01,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:01,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:01,859 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:01,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash -665761094, now seen corresponding path program 1 times [2022-01-10 12:28:01,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:01,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653145440] [2022-01-10 12:28:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:01,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:02,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:02,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653145440] [2022-01-10 12:28:02,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653145440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:02,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:02,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:28:02,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578215505] [2022-01-10 12:28:02,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:02,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:28:02,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:02,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:28:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:28:02,083 INFO L87 Difference]: Start difference. First operand has 283 states, 279 states have (on average 1.3799283154121864) internal successors, (385), 282 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:02,132 INFO L93 Difference]: Finished difference Result 555 states and 758 transitions. [2022-01-10 12:28:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:28:02,133 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-10 12:28:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:02,140 INFO L225 Difference]: With dead ends: 555 [2022-01-10 12:28:02,140 INFO L226 Difference]: Without dead ends: 273 [2022-01-10 12:28:02,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:28:02,144 INFO L933 BasicCegarLoop]: 375 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, 375 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:02,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-10 12:28:02,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-01-10 12:28:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 270 states have (on average 1.3592592592592592) internal successors, (367), 272 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 367 transitions. [2022-01-10 12:28:02,189 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 367 transitions. Word has length 21 [2022-01-10 12:28:02,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:02,189 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 367 transitions. [2022-01-10 12:28:02,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,189 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 367 transitions. [2022-01-10 12:28:02,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 12:28:02,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:02,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:02,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:28:02,191 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:02,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:02,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1525583768, now seen corresponding path program 1 times [2022-01-10 12:28:02,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:02,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201754193] [2022-01-10 12:28:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:02,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:02,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:02,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201754193] [2022-01-10 12:28:02,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201754193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:02,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:02,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:28:02,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999735651] [2022-01-10 12:28:02,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:02,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:28:02,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:02,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:28:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:02,250 INFO L87 Difference]: Start difference. First operand 273 states and 367 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:02,286 INFO L93 Difference]: Finished difference Result 538 states and 726 transitions. [2022-01-10 12:28:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:28:02,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 12:28:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:02,288 INFO L225 Difference]: With dead ends: 538 [2022-01-10 12:28:02,288 INFO L226 Difference]: Without dead ends: 273 [2022-01-10 12:28:02,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:02,290 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 350 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 361 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 [2022-01-10 12:28:02,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 361 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:02,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-10 12:28:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-01-10 12:28:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 270 states have (on average 1.348148148148148) internal successors, (364), 272 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 364 transitions. [2022-01-10 12:28:02,304 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 364 transitions. Word has length 22 [2022-01-10 12:28:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:02,304 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 364 transitions. [2022-01-10 12:28:02,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 364 transitions. [2022-01-10 12:28:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 12:28:02,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:02,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:02,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:28:02,306 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash 535171840, now seen corresponding path program 1 times [2022-01-10 12:28:02,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:02,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75787179] [2022-01-10 12:28:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:02,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:02,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:02,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75787179] [2022-01-10 12:28:02,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75787179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:02,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:02,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:28:02,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723484338] [2022-01-10 12:28:02,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:02,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:28:02,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:02,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:28:02,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:02,363 INFO L87 Difference]: Start difference. First operand 273 states and 364 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:02,470 INFO L93 Difference]: Finished difference Result 563 states and 746 transitions. [2022-01-10 12:28:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:28:02,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-10 12:28:02,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:02,474 INFO L225 Difference]: With dead ends: 563 [2022-01-10 12:28:02,474 INFO L226 Difference]: Without dead ends: 298 [2022-01-10 12:28:02,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:02,477 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 183 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:02,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 435 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-01-10 12:28:02,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 292. [2022-01-10 12:28:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 289 states have (on average 1.28719723183391) internal successors, (372), 291 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 372 transitions. [2022-01-10 12:28:02,507 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 372 transitions. Word has length 28 [2022-01-10 12:28:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:02,507 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 372 transitions. [2022-01-10 12:28:02,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 372 transitions. [2022-01-10 12:28:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 12:28:02,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:02,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:02,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:28:02,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:02,509 INFO L85 PathProgramCache]: Analyzing trace with hash -972343023, now seen corresponding path program 1 times [2022-01-10 12:28:02,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:02,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644321503] [2022-01-10 12:28:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:02,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:02,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:02,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644321503] [2022-01-10 12:28:02,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644321503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:02,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:02,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:28:02,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986185833] [2022-01-10 12:28:02,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:02,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:28:02,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:02,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:28:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:28:02,608 INFO L87 Difference]: Start difference. First operand 292 states and 372 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:02,763 INFO L93 Difference]: Finished difference Result 773 states and 968 transitions. [2022-01-10 12:28:02,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:28:02,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-10 12:28:02,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:02,765 INFO L225 Difference]: With dead ends: 773 [2022-01-10 12:28:02,765 INFO L226 Difference]: Without dead ends: 489 [2022-01-10 12:28:02,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:28:02,779 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 424 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:02,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1304 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:02,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-01-10 12:28:02,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 319. [2022-01-10 12:28:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 316 states have (on average 1.2626582278481013) internal successors, (399), 318 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 399 transitions. [2022-01-10 12:28:02,799 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 399 transitions. Word has length 35 [2022-01-10 12:28:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:02,799 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 399 transitions. [2022-01-10 12:28:02,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 399 transitions. [2022-01-10 12:28:02,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 12:28:02,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:02,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:02,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:28:02,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:02,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1654755633, now seen corresponding path program 1 times [2022-01-10 12:28:02,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:02,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375099084] [2022-01-10 12:28:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:02,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:02,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:02,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375099084] [2022-01-10 12:28:02,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375099084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:02,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:02,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:28:02,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083526914] [2022-01-10 12:28:02,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:02,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:28:02,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:28:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:28:02,862 INFO L87 Difference]: Start difference. First operand 319 states and 399 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:03,064 INFO L93 Difference]: Finished difference Result 1102 states and 1362 transitions. [2022-01-10 12:28:03,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:28:03,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-10 12:28:03,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:03,067 INFO L225 Difference]: With dead ends: 1102 [2022-01-10 12:28:03,067 INFO L226 Difference]: Without dead ends: 791 [2022-01-10 12:28:03,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:28:03,068 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 622 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:03,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 1650 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-01-10 12:28:03,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 316. [2022-01-10 12:28:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 313 states have (on average 1.2460063897763578) internal successors, (390), 315 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 390 transitions. [2022-01-10 12:28:03,095 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 390 transitions. Word has length 35 [2022-01-10 12:28:03,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:03,098 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 390 transitions. [2022-01-10 12:28:03,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 390 transitions. [2022-01-10 12:28:03,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 12:28:03,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:03,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:03,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:28:03,102 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:03,102 INFO L85 PathProgramCache]: Analyzing trace with hash 535208786, now seen corresponding path program 1 times [2022-01-10 12:28:03,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:03,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411914038] [2022-01-10 12:28:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:03,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:03,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:03,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411914038] [2022-01-10 12:28:03,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411914038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:03,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:03,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:28:03,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141770482] [2022-01-10 12:28:03,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:03,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:28:03,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:03,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:28:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:28:03,160 INFO L87 Difference]: Start difference. First operand 316 states and 390 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:03,266 INFO L93 Difference]: Finished difference Result 757 states and 924 transitions. [2022-01-10 12:28:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:28:03,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-10 12:28:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:03,270 INFO L225 Difference]: With dead ends: 757 [2022-01-10 12:28:03,270 INFO L226 Difference]: Without dead ends: 449 [2022-01-10 12:28:03,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:28:03,271 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 271 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:03,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 807 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:03,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-10 12:28:03,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 334. [2022-01-10 12:28:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 331 states have (on average 1.2326283987915407) internal successors, (408), 333 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 408 transitions. [2022-01-10 12:28:03,295 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 408 transitions. Word has length 35 [2022-01-10 12:28:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:03,295 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 408 transitions. [2022-01-10 12:28:03,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 408 transitions. [2022-01-10 12:28:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 12:28:03,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:03,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:03,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:28:03,297 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1888518483, now seen corresponding path program 1 times [2022-01-10 12:28:03,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:03,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804302731] [2022-01-10 12:28:03,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:03,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:03,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:03,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804302731] [2022-01-10 12:28:03,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804302731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:03,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:03,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:28:03,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428722233] [2022-01-10 12:28:03,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:03,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:28:03,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:03,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:28:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:03,344 INFO L87 Difference]: Start difference. First operand 334 states and 408 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:03,354 INFO L93 Difference]: Finished difference Result 334 states and 408 transitions. [2022-01-10 12:28:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:28:03,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-10 12:28:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:03,355 INFO L225 Difference]: With dead ends: 334 [2022-01-10 12:28:03,355 INFO L226 Difference]: Without dead ends: 132 [2022-01-10 12:28:03,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:03,356 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 101 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:03,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 116 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-01-10 12:28:03,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-01-10 12:28:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.251908396946565) internal successors, (164), 131 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 164 transitions. [2022-01-10 12:28:03,366 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 164 transitions. Word has length 35 [2022-01-10 12:28:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:03,366 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 164 transitions. [2022-01-10 12:28:03,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 164 transitions. [2022-01-10 12:28:03,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 12:28:03,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:03,367 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] [2022-01-10 12:28:03,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:28:03,367 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:03,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash -93584146, now seen corresponding path program 1 times [2022-01-10 12:28:03,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:03,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541981975] [2022-01-10 12:28:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:03,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:03,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:03,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541981975] [2022-01-10 12:28:03,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541981975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:03,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:03,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:28:03,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771902874] [2022-01-10 12:28:03,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:03,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:28:03,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:03,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:28:03,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:03,456 INFO L87 Difference]: Start difference. First operand 132 states and 164 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 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) [2022-01-10 12:28:03,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:03,482 INFO L93 Difference]: Finished difference Result 293 states and 365 transitions. [2022-01-10 12:28:03,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:28:03,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 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 [2022-01-10 12:28:03,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:03,484 INFO L225 Difference]: With dead ends: 293 [2022-01-10 12:28:03,484 INFO L226 Difference]: Without dead ends: 169 [2022-01-10 12:28:03,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:28:03,485 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 26 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:03,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 197 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:03,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-01-10 12:28:03,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-01-10 12:28:03,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.2321428571428572) internal successors, (207), 168 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 207 transitions. [2022-01-10 12:28:03,499 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 207 transitions. Word has length 41 [2022-01-10 12:28:03,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:03,499 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 207 transitions. [2022-01-10 12:28:03,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 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) [2022-01-10 12:28:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 207 transitions. [2022-01-10 12:28:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 12:28:03,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:03,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:03,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:28:03,501 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1865849192, now seen corresponding path program 1 times [2022-01-10 12:28:03,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:03,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14571750] [2022-01-10 12:28:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:03,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:03,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:03,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14571750] [2022-01-10 12:28:03,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14571750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:03,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:03,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:28:03,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552407721] [2022-01-10 12:28:03,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:03,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:28:03,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:03,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:28:03,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:28:03,588 INFO L87 Difference]: Start difference. First operand 169 states and 207 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:03,752 INFO L93 Difference]: Finished difference Result 843 states and 1050 transitions. [2022-01-10 12:28:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:28:03,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-10 12:28:03,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:03,756 INFO L225 Difference]: With dead ends: 843 [2022-01-10 12:28:03,757 INFO L226 Difference]: Without dead ends: 719 [2022-01-10 12:28:03,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:28:03,758 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 524 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:03,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 877 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-01-10 12:28:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 297. [2022-01-10 12:28:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.2263513513513513) internal successors, (363), 296 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) [2022-01-10 12:28:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 363 transitions. [2022-01-10 12:28:03,785 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 363 transitions. Word has length 43 [2022-01-10 12:28:03,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:03,785 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 363 transitions. [2022-01-10 12:28:03,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 363 transitions. [2022-01-10 12:28:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:28:03,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:03,786 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, 1, 1, 1, 1] [2022-01-10 12:28:03,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:28:03,786 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash 916645829, now seen corresponding path program 1 times [2022-01-10 12:28:03,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:03,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113224979] [2022-01-10 12:28:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:03,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:03,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:03,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113224979] [2022-01-10 12:28:03,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113224979] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:28:03,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080684033] [2022-01-10 12:28:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:03,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:28:03,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:28:03,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:28:03,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:28:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:03,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 12:28:03,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:28:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:04,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:28:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:28:04,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080684033] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:28:04,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:28:04,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-10 12:28:04,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305441821] [2022-01-10 12:28:04,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:28:04,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:28:04,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:04,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:28:04,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:28:04,294 INFO L87 Difference]: Start difference. First operand 297 states and 363 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:04,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:04,370 INFO L93 Difference]: Finished difference Result 684 states and 861 transitions. [2022-01-10 12:28:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:28:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 12:28:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:04,372 INFO L225 Difference]: With dead ends: 684 [2022-01-10 12:28:04,373 INFO L226 Difference]: Without dead ends: 395 [2022-01-10 12:28:04,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:28:04,374 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 181 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:04,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 447 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-10 12:28:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 257. [2022-01-10 12:28:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.20703125) internal successors, (309), 256 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 309 transitions. [2022-01-10 12:28:04,397 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 309 transitions. Word has length 78 [2022-01-10 12:28:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:04,398 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 309 transitions. [2022-01-10 12:28:04,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 309 transitions. [2022-01-10 12:28:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 12:28:04,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:04,399 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:04,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 12:28:04,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 12:28:04,615 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:04,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:04,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1468131903, now seen corresponding path program 1 times [2022-01-10 12:28:04,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:04,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776865645] [2022-01-10 12:28:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:04,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 73 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-10 12:28:04,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:04,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776865645] [2022-01-10 12:28:04,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776865645] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:28:04,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488724493] [2022-01-10 12:28:04,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:04,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:28:04,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:28:04,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:28:04,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 12:28:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:04,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 12:28:04,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:28:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-10 12:28:04,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:28:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-10 12:28:05,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488724493] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:28:05,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:28:05,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-10 12:28:05,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358299339] [2022-01-10 12:28:05,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:28:05,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 12:28:05,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:05,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 12:28:05,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:28:05,166 INFO L87 Difference]: Start difference. First operand 257 states and 309 transitions. Second operand has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 13 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:06,167 INFO L93 Difference]: Finished difference Result 2799 states and 3408 transitions. [2022-01-10 12:28:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-10 12:28:06,168 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 13 states have internal predecessors, (198), 0 states have call successors, (0), 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 135 [2022-01-10 12:28:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:06,174 INFO L225 Difference]: With dead ends: 2799 [2022-01-10 12:28:06,174 INFO L226 Difference]: Without dead ends: 2401 [2022-01-10 12:28:06,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=748, Invalid=3158, Unknown=0, NotChecked=0, Total=3906 [2022-01-10 12:28:06,177 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 2335 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:06,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2335 Valid, 1684 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:28:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2022-01-10 12:28:06,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 622. [2022-01-10 12:28:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 1.178743961352657) internal successors, (732), 621 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 732 transitions. [2022-01-10 12:28:06,241 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 732 transitions. Word has length 135 [2022-01-10 12:28:06,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:06,241 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 732 transitions. [2022-01-10 12:28:06,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 13 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:06,241 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 732 transitions. [2022-01-10 12:28:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 12:28:06,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:06,243 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:06,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 12:28:06,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 12:28:06,452 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:06,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:06,453 INFO L85 PathProgramCache]: Analyzing trace with hash -253466132, now seen corresponding path program 1 times [2022-01-10 12:28:06,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:06,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800058655] [2022-01-10 12:28:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:06,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 12:28:06,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:06,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800058655] [2022-01-10 12:28:06,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800058655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:06,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:06,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:28:06,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463343997] [2022-01-10 12:28:06,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:06,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:28:06,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:06,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:28:06,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:28:06,506 INFO L87 Difference]: Start difference. First operand 622 states and 732 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:06,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:06,680 INFO L93 Difference]: Finished difference Result 1803 states and 2131 transitions. [2022-01-10 12:28:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:28:06,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-01-10 12:28:06,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:06,685 INFO L225 Difference]: With dead ends: 1803 [2022-01-10 12:28:06,685 INFO L226 Difference]: Without dead ends: 1189 [2022-01-10 12:28:06,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:28:06,686 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 375 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:06,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 766 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:06,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2022-01-10 12:28:06,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 571. [2022-01-10 12:28:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.1631578947368422) internal successors, (663), 570 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 663 transitions. [2022-01-10 12:28:06,740 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 663 transitions. Word has length 139 [2022-01-10 12:28:06,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:06,740 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 663 transitions. [2022-01-10 12:28:06,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:06,741 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 663 transitions. [2022-01-10 12:28:06,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 12:28:06,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:06,744 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:06,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:28:06,744 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:06,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:06,745 INFO L85 PathProgramCache]: Analyzing trace with hash -97324308, now seen corresponding path program 2 times [2022-01-10 12:28:06,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:06,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713052568] [2022-01-10 12:28:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:06,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 12:28:06,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:06,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713052568] [2022-01-10 12:28:06,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713052568] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:28:06,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284326968] [2022-01-10 12:28:06,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 12:28:06,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:28:06,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:28:06,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:28:06,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 12:28:07,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 12:28:07,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 12:28:07,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 12:28:07,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:28:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 12:28:07,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 12:28:07,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284326968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:07,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 12:28:07,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-01-10 12:28:07,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196009889] [2022-01-10 12:28:07,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:07,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:28:07,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:07,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:28:07,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:28:07,312 INFO L87 Difference]: Start difference. First operand 571 states and 663 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:07,690 INFO L93 Difference]: Finished difference Result 1779 states and 2077 transitions. [2022-01-10 12:28:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:28:07,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-01-10 12:28:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:07,695 INFO L225 Difference]: With dead ends: 1779 [2022-01-10 12:28:07,695 INFO L226 Difference]: Without dead ends: 1441 [2022-01-10 12:28:07,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-01-10 12:28:07,696 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 523 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:07,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 797 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:28:07,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2022-01-10 12:28:07,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 724. [2022-01-10 12:28:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 1.1549100968188104) internal successors, (835), 723 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 835 transitions. [2022-01-10 12:28:07,832 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 835 transitions. Word has length 139 [2022-01-10 12:28:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:07,832 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 835 transitions. [2022-01-10 12:28:07,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 835 transitions. [2022-01-10 12:28:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 12:28:07,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:28:07,834 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:28:07,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 12:28:08,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:28:08,051 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:28:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:28:08,052 INFO L85 PathProgramCache]: Analyzing trace with hash -83791507, now seen corresponding path program 1 times [2022-01-10 12:28:08,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:28:08,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538967844] [2022-01-10 12:28:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:28:08,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:28:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:28:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 12:28:08,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:28:08,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538967844] [2022-01-10 12:28:08,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538967844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:28:08,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:28:08,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:28:08,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216691560] [2022-01-10 12:28:08,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:28:08,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:28:08,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:28:08,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:28:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:28:08,105 INFO L87 Difference]: Start difference. First operand 724 states and 835 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:28:08,192 INFO L93 Difference]: Finished difference Result 1310 states and 1503 transitions. [2022-01-10 12:28:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:28:08,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-01-10 12:28:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:28:08,192 INFO L225 Difference]: With dead ends: 1310 [2022-01-10 12:28:08,192 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:28:08,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:28:08,194 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 219 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:28:08,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 522 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:28:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:28:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:28:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:28:08,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2022-01-10 12:28:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:28:08,195 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:28:08,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:28:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:28:08,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:28:08,197 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 12:28:08,198 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 12:28:08,198 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 12:28:08,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:28:08,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 12:28:25,912 WARN L228 SmtUtils]: Spent 9.21s on a formula simplification. DAG size of input: 249 DAG size of output: 247 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:28:30,960 WARN L228 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 239 DAG size of output: 237 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:28:44,459 WARN L228 SmtUtils]: Spent 13.50s on a formula simplification. DAG size of input: 209 DAG size of output: 205 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:29:04,144 WARN L228 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 228 DAG size of output: 225 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)