/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/elevator_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:07:32,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:07:32,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:07:32,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:07:32,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:07:32,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:07:32,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:07:32,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:07:32,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:07:32,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:07:32,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:07:32,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:07:32,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:07:32,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:07:32,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:07:32,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:07:32,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:07:32,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:07:32,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:07:32,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:07:32,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:07:32,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:07:32,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:07:32,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:07:32,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:07:32,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:07:32,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:07:32,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:07:32,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:07:32,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:07:32,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:07:32,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:07:32,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:07:32,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:07:32,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:07:32,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:07:32,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:07:32,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:07:32,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:07:32,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:07:32,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:07:32,532 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 12:07:32,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:07:32,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:07:32,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:07:32,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:07:32,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:07:32,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:07:32,557 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:07:32,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:07:32,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:07:32,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:07:32,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:07:32,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:07:32,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:07:32,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:07:32,559 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:07:32,559 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:07:32,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:07:32,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:07:32,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:07:32,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:07:32,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:07:32,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:07:32,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:07:32,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:07:32,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:07:32,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:07:32,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:07:32,561 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:07:32,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:07:32,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:07:32,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:07:32,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:07:32,562 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:07:32,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:07:32,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:07:32,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:07:32,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:07:32,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:07:32,806 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:07:32,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2022-01-10 12:07:32,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/210347c31/aa29a21e734e4119848d98ef465f5267/FLAG876acb0f7 [2022-01-10 12:07:33,381 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:07:33,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2022-01-10 12:07:33,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/210347c31/aa29a21e734e4119848d98ef465f5267/FLAG876acb0f7 [2022-01-10 12:07:33,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/210347c31/aa29a21e734e4119848d98ef465f5267 [2022-01-10 12:07:33,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:07:33,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:07:33,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:07:33,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:07:33,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:07:33,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:07:33" (1/1) ... [2022-01-10 12:07:33,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@111aea15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:33, skipping insertion in model container [2022-01-10 12:07:33,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:07:33" (1/1) ... [2022-01-10 12:07:33,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:07:33,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:07:34,271 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/elevator_spec3_product21.cil.c[62420,62433] [2022-01-10 12:07:34,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:07:34,327 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:07:34,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:07:34,396 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/elevator_spec3_product21.cil.c[62420,62433] [2022-01-10 12:07:34,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:07:34,425 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:07:34,501 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/elevator_spec3_product21.cil.c[62420,62433] [2022-01-10 12:07:34,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:07:34,533 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:07:34,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34 WrapperNode [2022-01-10 12:07:34,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:07:34,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:07:34,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:07:34,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:07:34,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (1/1) ... [2022-01-10 12:07:34,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (1/1) ... [2022-01-10 12:07:34,833 INFO L137 Inliner]: procedures = 92, calls = 345, calls flagged for inlining = 198, calls inlined = 948, statements flattened = 33084 [2022-01-10 12:07:34,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:07:34,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:07:34,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:07:34,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:07:34,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (1/1) ... [2022-01-10 12:07:34,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (1/1) ... [2022-01-10 12:07:34,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (1/1) ... [2022-01-10 12:07:34,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (1/1) ... [2022-01-10 12:07:35,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (1/1) ... [2022-01-10 12:07:35,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (1/1) ... [2022-01-10 12:07:35,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (1/1) ... [2022-01-10 12:07:35,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:07:35,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:07:35,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:07:35,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:07:35,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (1/1) ... [2022-01-10 12:07:35,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:07:35,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:07:35,733 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 12:07:35,739 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 12:07:35,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:07:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:07:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:07:35,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:07:35,969 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:07:35,970 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:07:46,235 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:07:46,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:07:46,284 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:07:46,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:07:46 BoogieIcfgContainer [2022-01-10 12:07:46,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:07:46,294 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:07:46,294 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:07:46,296 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:07:46,298 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:07:46" (1/1) ... [2022-01-10 12:07:47,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:07:47 BasicIcfg [2022-01-10 12:07:47,770 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:07:47,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:07:47,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:07:47,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:07:47,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:07:33" (1/4) ... [2022-01-10 12:07:47,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e632665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:07:47, skipping insertion in model container [2022-01-10 12:07:47,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:34" (2/4) ... [2022-01-10 12:07:47,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e632665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:07:47, skipping insertion in model container [2022-01-10 12:07:47,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:07:46" (3/4) ... [2022-01-10 12:07:47,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e632665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:07:47, skipping insertion in model container [2022-01-10 12:07:47,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:07:47" (4/4) ... [2022-01-10 12:07:47,776 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.cTransformedIcfg [2022-01-10 12:07:47,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:07:47,780 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-01-10 12:07:47,846 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:07:47,850 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 12:07:47,850 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-01-10 12:07:48,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 8848 states, 8837 states have (on average 1.8801629512277922) internal successors, (16615), 8847 states have internal predecessors, (16615), 0 states have call successors, (0), 0 states 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 12:07:48,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 12:07:48,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:07:48,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:07:48,117 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:07:48,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:07:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash 216095121, now seen corresponding path program 1 times [2022-01-10 12:07:48,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:07:48,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369980607] [2022-01-10 12:07:48,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:07:48,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:07:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:07:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:07:48,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:07:48,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369980607] [2022-01-10 12:07:48,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369980607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:07:48,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:07:48,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:07:48,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778661323] [2022-01-10 12:07:48,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:07:48,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:07:48,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:07:48,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:07:48,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:07:48,669 INFO L87 Difference]: Start difference. First operand has 8848 states, 8837 states have (on average 1.8801629512277922) internal successors, (16615), 8847 states have internal predecessors, (16615), 0 states have call successors, (0), 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 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 12:07:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:07:49,681 INFO L93 Difference]: Finished difference Result 24265 states and 45586 transitions. [2022-01-10 12:07:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:07:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 12:07:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:07:49,776 INFO L225 Difference]: With dead ends: 24265 [2022-01-10 12:07:49,776 INFO L226 Difference]: Without dead ends: 16397 [2022-01-10 12:07:49,800 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 12:07:49,802 INFO L933 BasicCegarLoop]: 17288 mSDtfsCounter, 16458 mSDsluCounter, 14019 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16458 SdHoareTripleChecker+Valid, 31307 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:07:49,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16458 Valid, 31307 Invalid, 404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:07:50,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16397 states. [2022-01-10 12:07:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16397 to 16377. [2022-01-10 12:07:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16377 states, 16367 states have (on average 1.8762143337202908) internal successors, (30708), 16376 states have internal predecessors, (30708), 0 states have call successors, (0), 0 states 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 12:07:50,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16377 states to 16377 states and 30708 transitions. [2022-01-10 12:07:50,493 INFO L78 Accepts]: Start accepts. Automaton has 16377 states and 30708 transitions. Word has length 51 [2022-01-10 12:07:50,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:07:50,493 INFO L470 AbstractCegarLoop]: Abstraction has 16377 states and 30708 transitions. [2022-01-10 12:07:50,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 12:07:50,494 INFO L276 IsEmpty]: Start isEmpty. Operand 16377 states and 30708 transitions. [2022-01-10 12:07:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 12:07:50,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:07:50,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:07:50,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:07:50,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:07:50,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:07:50,497 INFO L85 PathProgramCache]: Analyzing trace with hash 144374760, now seen corresponding path program 1 times [2022-01-10 12:07:50,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:07:50,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351391572] [2022-01-10 12:07:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:07:50,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:07:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:07:50,579 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 12:07:50,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:07:50,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351391572] [2022-01-10 12:07:50,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351391572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:07:50,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:07:50,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:07:50,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63493304] [2022-01-10 12:07:50,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:07:50,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:07:50,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:07:50,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:07:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:07:50,582 INFO L87 Difference]: Start difference. First operand 16377 states and 30708 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 12:07:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:07:51,695 INFO L93 Difference]: Finished difference Result 45464 states and 85249 transitions. [2022-01-10 12:07:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:07:51,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 12:07:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:07:51,821 INFO L225 Difference]: With dead ends: 45464 [2022-01-10 12:07:51,821 INFO L226 Difference]: Without dead ends: 31395 [2022-01-10 12:07:51,855 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 12:07:51,856 INFO L933 BasicCegarLoop]: 16424 mSDtfsCounter, 16433 mSDsluCounter, 14041 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16433 SdHoareTripleChecker+Valid, 30465 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:07:51,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16433 Valid, 30465 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:07:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31395 states. [2022-01-10 12:07:52,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31395 to 31375. [2022-01-10 12:07:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31375 states, 31365 states have (on average 1.8729794356767098) internal successors, (58746), 31374 states have internal predecessors, (58746), 0 states have call successors, (0), 0 states 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 12:07:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31375 states to 31375 states and 58746 transitions. [2022-01-10 12:07:52,803 INFO L78 Accepts]: Start accepts. Automaton has 31375 states and 58746 transitions. Word has length 52 [2022-01-10 12:07:52,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:07:52,805 INFO L470 AbstractCegarLoop]: Abstraction has 31375 states and 58746 transitions. [2022-01-10 12:07:52,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 12:07:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 31375 states and 58746 transitions. [2022-01-10 12:07:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:07:52,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:07:52,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:07:52,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:07:52,818 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:07:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:07:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2135875964, now seen corresponding path program 1 times [2022-01-10 12:07:52,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:07:52,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533885243] [2022-01-10 12:07:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:07:52,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:07:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:07:52,914 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 12:07:52,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:07:52,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533885243] [2022-01-10 12:07:52,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533885243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:07:52,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:07:52,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:07:52,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032453866] [2022-01-10 12:07:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:07:52,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:07:52,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:07:52,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:07:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:07:52,917 INFO L87 Difference]: Start difference. First operand 31375 states and 58746 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 12:07:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:07:54,156 INFO L93 Difference]: Finished difference Result 87625 states and 164052 transitions. [2022-01-10 12:07:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:07:54,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 12:07:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:07:54,455 INFO L225 Difference]: With dead ends: 87625 [2022-01-10 12:07:54,456 INFO L226 Difference]: Without dead ends: 61187 [2022-01-10 12:07:54,503 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 12:07:54,504 INFO L933 BasicCegarLoop]: 16410 mSDtfsCounter, 16418 mSDsluCounter, 14072 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16418 SdHoareTripleChecker+Valid, 30482 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:07:54,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16418 Valid, 30482 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:07:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61187 states. [2022-01-10 12:07:55,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61187 to 61167. [2022-01-10 12:07:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61167 states, 61157 states have (on average 1.8698268391189887) internal successors, (114353), 61166 states have internal predecessors, (114353), 0 states have call successors, (0), 0 states 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 12:07:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61167 states to 61167 states and 114353 transitions. [2022-01-10 12:07:56,170 INFO L78 Accepts]: Start accepts. Automaton has 61167 states and 114353 transitions. Word has length 53 [2022-01-10 12:07:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:07:56,173 INFO L470 AbstractCegarLoop]: Abstraction has 61167 states and 114353 transitions. [2022-01-10 12:07:56,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 12:07:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 61167 states and 114353 transitions. [2022-01-10 12:07:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 12:07:56,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:07:56,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:07:56,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:07:56,178 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:07:56,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:07:56,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1017109378, now seen corresponding path program 1 times [2022-01-10 12:07:56,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:07:56,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626526887] [2022-01-10 12:07:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:07:56,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:07:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:07:56,262 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 12:07:56,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:07:56,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626526887] [2022-01-10 12:07:56,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626526887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:07:56,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:07:56,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:07:56,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188727652] [2022-01-10 12:07:56,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:07:56,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:07:56,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:07:56,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:07:56,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:07:56,264 INFO L87 Difference]: Start difference. First operand 61167 states and 114353 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 12:07:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:07:58,255 INFO L93 Difference]: Finished difference Result 171318 states and 320222 transitions. [2022-01-10 12:07:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:07:58,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 12:07:58,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:07:58,685 INFO L225 Difference]: With dead ends: 171318 [2022-01-10 12:07:58,685 INFO L226 Difference]: Without dead ends: 120347 [2022-01-10 12:07:58,769 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 12:07:58,770 INFO L933 BasicCegarLoop]: 16396 mSDtfsCounter, 16403 mSDsluCounter, 14103 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16403 SdHoareTripleChecker+Valid, 30499 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:07:58,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16403 Valid, 30499 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 12:07:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120347 states. [2022-01-10 12:08:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120347 to 120327. [2022-01-10 12:08:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120327 states, 120317 states have (on average 1.8666023920144286) internal successors, (224584), 120326 states have internal predecessors, (224584), 0 states have call successors, (0), 0 states 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 12:08:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120327 states to 120327 states and 224584 transitions. [2022-01-10 12:08:02,164 INFO L78 Accepts]: Start accepts. Automaton has 120327 states and 224584 transitions. Word has length 54 [2022-01-10 12:08:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:08:02,179 INFO L470 AbstractCegarLoop]: Abstraction has 120327 states and 224584 transitions. [2022-01-10 12:08:02,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 12:08:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 120327 states and 224584 transitions. [2022-01-10 12:08:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 12:08:02,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:08:02,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:08:02,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:08:02,182 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:08:02,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:08:02,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1256703386, now seen corresponding path program 1 times [2022-01-10 12:08:02,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:08:02,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230522370] [2022-01-10 12:08:02,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:08:02,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:08:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:08:02,240 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 12:08:02,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:08:02,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230522370] [2022-01-10 12:08:02,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230522370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:08:02,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:08:02,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:08:02,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562000288] [2022-01-10 12:08:02,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:08:02,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:08:02,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:08:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:08:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:08:02,242 INFO L87 Difference]: Start difference. First operand 120327 states and 224584 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 12:08:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:08:05,190 INFO L93 Difference]: Finished difference Result 337415 states and 629596 transitions. [2022-01-10 12:08:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:08:05,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 12:08:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:08:05,727 INFO L225 Difference]: With dead ends: 337415 [2022-01-10 12:08:05,728 INFO L226 Difference]: Without dead ends: 237803 [2022-01-10 12:08:05,850 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 12:08:05,851 INFO L933 BasicCegarLoop]: 16382 mSDtfsCounter, 16388 mSDsluCounter, 14134 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16388 SdHoareTripleChecker+Valid, 30516 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:08:05,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16388 Valid, 30516 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:08:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237803 states. [2022-01-10 12:08:10,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237803 to 237783. [2022-01-10 12:08:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237783 states, 237773 states have (on average 1.8632687479234396) internal successors, (443035), 237782 states have internal predecessors, (443035), 0 states have call successors, (0), 0 states 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 12:08:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237783 states to 237783 states and 443035 transitions. [2022-01-10 12:08:11,521 INFO L78 Accepts]: Start accepts. Automaton has 237783 states and 443035 transitions. Word has length 55 [2022-01-10 12:08:11,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:08:11,523 INFO L470 AbstractCegarLoop]: Abstraction has 237783 states and 443035 transitions. [2022-01-10 12:08:11,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 12:08:11,523 INFO L276 IsEmpty]: Start isEmpty. Operand 237783 states and 443035 transitions. [2022-01-10 12:08:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 12:08:11,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:08:11,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:08:11,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:08:11,526 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:08:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:08:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash 96606311, now seen corresponding path program 1 times [2022-01-10 12:08:11,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:08:11,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204510886] [2022-01-10 12:08:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:08:11,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:08:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:08:11,591 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 12:08:11,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:08:11,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204510886] [2022-01-10 12:08:11,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204510886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:08:11,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:08:11,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:08:11,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993754711] [2022-01-10 12:08:11,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:08:11,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:08:11,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:08:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:08:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:08:11,593 INFO L87 Difference]: Start difference. First operand 237783 states and 443035 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 12:08:18,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:08:18,780 INFO L93 Difference]: Finished difference Result 598254 states and 1114777 transitions. [2022-01-10 12:08:18,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:08:18,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 12:08:18,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:08:20,012 INFO L225 Difference]: With dead ends: 598254 [2022-01-10 12:08:20,013 INFO L226 Difference]: Without dead ends: 402600 [2022-01-10 12:08:20,182 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 12:08:20,185 INFO L933 BasicCegarLoop]: 26721 mSDtfsCounter, 16213 mSDsluCounter, 10657 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16213 SdHoareTripleChecker+Valid, 37378 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 12:08:20,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16213 Valid, 37378 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 12:08:20,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402600 states. [2022-01-10 12:08:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402600 to 401707. [2022-01-10 12:08:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401707 states, 401697 states have (on average 1.8619954841584578) internal successors, (747958), 401706 states have internal predecessors, (747958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)