./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50e151318da71693ecfd101451d51852511de48fd25109c1f84fed946653f0cd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:44:08,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:44:08,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:44:08,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:44:08,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:44:08,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:44:08,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:44:08,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:44:08,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:44:08,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:44:08,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:44:08,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:44:08,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:44:08,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:44:08,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:44:08,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:44:08,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:44:08,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:44:08,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:44:08,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:44:08,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:44:08,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:44:08,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:44:08,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:44:08,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:44:08,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:44:08,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:44:08,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:44:08,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:44:08,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:44:08,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:44:08,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:44:08,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:44:08,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:44:08,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:44:08,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:44:08,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:44:08,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:44:08,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:44:08,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:44:08,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:44:08,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:44:08,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:44:08,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:44:08,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:44:08,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:44:08,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:44:08,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:44:08,564 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:44:08,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:44:08,565 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:44:08,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:44:08,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:44:08,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:44:08,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:44:08,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:44:08,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:44:08,566 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:44:08,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:44:08,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:44:08,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:44:08,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:44:08,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:44:08,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:44:08,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:44:08,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:44:08,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:44:08,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:44:08,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:44:08,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:44:08,572 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:44:08,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:44:08,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:44:08,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:44:08,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50e151318da71693ecfd101451d51852511de48fd25109c1f84fed946653f0cd [2021-11-09 08:44:08,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:44:08,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:44:08,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:44:08,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:44:08,921 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:44:08,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-09 08:44:09,009 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/data/68fb567e1/912bf96b5b854f55bc77a61d4f7f825d/FLAG7ded83640 [2021-11-09 08:44:09,612 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:44:09,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-09 08:44:09,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/data/68fb567e1/912bf96b5b854f55bc77a61d4f7f825d/FLAG7ded83640 [2021-11-09 08:44:09,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/data/68fb567e1/912bf96b5b854f55bc77a61d4f7f825d [2021-11-09 08:44:09,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:44:09,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:44:09,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:44:09,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:44:09,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:44:09,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:44:09" (1/1) ... [2021-11-09 08:44:09,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf50d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:09, skipping insertion in model container [2021-11-09 08:44:09,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:44:09" (1/1) ... [2021-11-09 08:44:09,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:44:10,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:44:10,296 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7667,7680] [2021-11-09 08:44:10,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:44:10,365 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:44:10,436 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7667,7680] [2021-11-09 08:44:10,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:44:10,487 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:44:10,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10 WrapperNode [2021-11-09 08:44:10,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:44:10,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:44:10,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:44:10,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:44:10,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (1/1) ... [2021-11-09 08:44:10,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (1/1) ... [2021-11-09 08:44:10,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:44:10,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:44:10,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:44:10,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:44:10,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (1/1) ... [2021-11-09 08:44:10,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (1/1) ... [2021-11-09 08:44:10,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (1/1) ... [2021-11-09 08:44:10,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (1/1) ... [2021-11-09 08:44:10,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (1/1) ... [2021-11-09 08:44:10,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (1/1) ... [2021-11-09 08:44:10,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (1/1) ... [2021-11-09 08:44:10,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:44:10,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:44:10,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:44:10,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:44:10,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (1/1) ... [2021-11-09 08:44:10,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:44:10,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:10,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:44:10,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef897ad1-6ea7-4ce2-97cc-4daf6957efb7/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:44:10,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:44:10,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:44:10,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:44:10,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:44:11,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:44:11,614 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 08:44:11,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:44:11 BoogieIcfgContainer [2021-11-09 08:44:11,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:44:11,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:44:11,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:44:11,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:44:11,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:44:09" (1/3) ... [2021-11-09 08:44:11,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569ba8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:44:11, skipping insertion in model container [2021-11-09 08:44:11,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:10" (2/3) ... [2021-11-09 08:44:11,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569ba8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:44:11, skipping insertion in model container [2021-11-09 08:44:11,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:44:11" (3/3) ... [2021-11-09 08:44:11,628 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-09 08:44:11,634 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:44:11,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:44:11,701 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:44:11,710 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 [2021-11-09 08:44:11,711 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:44:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-09 08:44:11,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:11,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:11,751 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:11,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:11,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2006546999, now seen corresponding path program 1 times [2021-11-09 08:44:11,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:11,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917525611] [2021-11-09 08:44:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:11,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:12,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:12,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917525611] [2021-11-09 08:44:12,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917525611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:12,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:12,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:12,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347328315] [2021-11-09 08:44:12,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:44:12,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:44:12,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:44:12,412 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 0 states have call successors, (0), 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 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:12,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:12,526 INFO L93 Difference]: Finished difference Result 300 states and 490 transitions. [2021-11-09 08:44:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:44:12,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-09 08:44:12,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:12,544 INFO L225 Difference]: With dead ends: 300 [2021-11-09 08:44:12,544 INFO L226 Difference]: Without dead ends: 209 [2021-11-09 08:44:12,548 INFO L786 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 [2021-11-09 08:44:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-09 08:44:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2021-11-09 08:44:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4466019417475728) internal successors, (298), 206 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 298 transitions. [2021-11-09 08:44:12,609 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 298 transitions. Word has length 87 [2021-11-09 08:44:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:12,610 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 298 transitions. [2021-11-09 08:44:12,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 298 transitions. [2021-11-09 08:44:12,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-09 08:44:12,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:12,615 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:12,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:44:12,615 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1559740613, now seen corresponding path program 1 times [2021-11-09 08:44:12,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:12,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666137975] [2021-11-09 08:44:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:12,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:12,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:12,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666137975] [2021-11-09 08:44:12,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666137975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:12,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:12,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:12,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787109064] [2021-11-09 08:44:12,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:44:12,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:44:12,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:44:12,780 INFO L87 Difference]: Start difference. First operand 207 states and 298 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:12,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:12,875 INFO L93 Difference]: Finished difference Result 499 states and 762 transitions. [2021-11-09 08:44:12,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:44:12,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-09 08:44:12,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:12,887 INFO L225 Difference]: With dead ends: 499 [2021-11-09 08:44:12,887 INFO L226 Difference]: Without dead ends: 345 [2021-11-09 08:44:12,889 INFO L786 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 [2021-11-09 08:44:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-09 08:44:12,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2021-11-09 08:44:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 342 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 514 transitions. [2021-11-09 08:44:12,944 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 514 transitions. Word has length 88 [2021-11-09 08:44:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:12,945 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 514 transitions. [2021-11-09 08:44:12,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 514 transitions. [2021-11-09 08:44:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-09 08:44:12,947 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:12,948 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:12,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:44:12,948 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1480148747, now seen corresponding path program 1 times [2021-11-09 08:44:12,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:12,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101339601] [2021-11-09 08:44:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:12,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:13,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:13,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101339601] [2021-11-09 08:44:13,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101339601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:13,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:13,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:13,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460515509] [2021-11-09 08:44:13,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:44:13,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:44:13,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:44:13,146 INFO L87 Difference]: Start difference. First operand 343 states and 514 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:13,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:13,209 INFO L93 Difference]: Finished difference Result 891 states and 1384 transitions. [2021-11-09 08:44:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:44:13,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-09 08:44:13,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:13,214 INFO L225 Difference]: With dead ends: 891 [2021-11-09 08:44:13,214 INFO L226 Difference]: Without dead ends: 601 [2021-11-09 08:44:13,217 INFO L786 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 [2021-11-09 08:44:13,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-09 08:44:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2021-11-09 08:44:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.5351170568561874) internal successors, (918), 598 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 918 transitions. [2021-11-09 08:44:13,303 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 918 transitions. Word has length 89 [2021-11-09 08:44:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:13,304 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 918 transitions. [2021-11-09 08:44:13,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 918 transitions. [2021-11-09 08:44:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-09 08:44:13,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:13,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:13,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:44:13,307 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:13,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:13,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1142089047, now seen corresponding path program 1 times [2021-11-09 08:44:13,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:13,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126384026] [2021-11-09 08:44:13,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:13,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:13,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:13,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126384026] [2021-11-09 08:44:13,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126384026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:13,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:13,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:13,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284029481] [2021-11-09 08:44:13,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:44:13,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:13,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:44:13,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:44:13,499 INFO L87 Difference]: Start difference. First operand 599 states and 918 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:13,629 INFO L93 Difference]: Finished difference Result 1627 states and 2544 transitions. [2021-11-09 08:44:13,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:44:13,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-09 08:44:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:13,641 INFO L225 Difference]: With dead ends: 1627 [2021-11-09 08:44:13,641 INFO L226 Difference]: Without dead ends: 1081 [2021-11-09 08:44:13,651 INFO L786 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 [2021-11-09 08:44:13,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2021-11-09 08:44:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1079. [2021-11-09 08:44:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.549165120593692) internal successors, (1670), 1078 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1670 transitions. [2021-11-09 08:44:13,752 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1670 transitions. Word has length 90 [2021-11-09 08:44:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:13,754 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 1670 transitions. [2021-11-09 08:44:13,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1670 transitions. [2021-11-09 08:44:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:44:13,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:13,767 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:13,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:44:13,767 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:13,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1309607801, now seen corresponding path program 1 times [2021-11-09 08:44:13,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:13,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137151072] [2021-11-09 08:44:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:13,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:13,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:13,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137151072] [2021-11-09 08:44:13,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137151072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:13,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:13,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:13,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192929267] [2021-11-09 08:44:13,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:44:13,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:44:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:44:13,942 INFO L87 Difference]: Start difference. First operand 1079 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:14,051 INFO L93 Difference]: Finished difference Result 3003 states and 4696 transitions. [2021-11-09 08:44:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:44:14,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-09 08:44:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:14,065 INFO L225 Difference]: With dead ends: 3003 [2021-11-09 08:44:14,065 INFO L226 Difference]: Without dead ends: 1977 [2021-11-09 08:44:14,068 INFO L786 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 [2021-11-09 08:44:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2021-11-09 08:44:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1975. [2021-11-09 08:44:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 1.5511651469098278) internal successors, (3062), 1974 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3062 transitions. [2021-11-09 08:44:14,214 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3062 transitions. Word has length 91 [2021-11-09 08:44:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:14,215 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 3062 transitions. [2021-11-09 08:44:14,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3062 transitions. [2021-11-09 08:44:14,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-09 08:44:14,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:14,220 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:14,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:44:14,221 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash 582949359, now seen corresponding path program 1 times [2021-11-09 08:44:14,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:14,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530161964] [2021-11-09 08:44:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:14,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:14,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:14,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530161964] [2021-11-09 08:44:14,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530161964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:14,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:14,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:14,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870982983] [2021-11-09 08:44:14,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:44:14,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:14,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:44:14,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:44:14,331 INFO L87 Difference]: Start difference. First operand 1975 states and 3062 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:14,560 INFO L93 Difference]: Finished difference Result 5563 states and 8664 transitions. [2021-11-09 08:44:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:44:14,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-09 08:44:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:14,594 INFO L225 Difference]: With dead ends: 5563 [2021-11-09 08:44:14,595 INFO L226 Difference]: Without dead ends: 3641 [2021-11-09 08:44:14,599 INFO L786 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 [2021-11-09 08:44:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2021-11-09 08:44:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2021-11-09 08:44:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3638 states have (on average 1.5453545904343045) internal successors, (5622), 3638 states have internal predecessors, (5622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5622 transitions. [2021-11-09 08:44:14,910 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5622 transitions. Word has length 92 [2021-11-09 08:44:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:14,911 INFO L470 AbstractCegarLoop]: Abstraction has 3639 states and 5622 transitions. [2021-11-09 08:44:14,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:14,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5622 transitions. [2021-11-09 08:44:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:44:14,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:14,914 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:14,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:44:14,915 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash -496500112, now seen corresponding path program 1 times [2021-11-09 08:44:14,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:14,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338020449] [2021-11-09 08:44:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:14,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:15,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:15,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338020449] [2021-11-09 08:44:15,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338020449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:15,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:15,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:44:15,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060952836] [2021-11-09 08:44:15,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:44:15,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:15,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:44:15,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:44:15,067 INFO L87 Difference]: Start difference. First operand 3639 states and 5622 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:15,580 INFO L93 Difference]: Finished difference Result 7225 states and 11191 transitions. [2021-11-09 08:44:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:44:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-09 08:44:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:15,610 INFO L225 Difference]: With dead ends: 7225 [2021-11-09 08:44:15,610 INFO L226 Difference]: Without dead ends: 3639 [2021-11-09 08:44:15,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:44:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2021-11-09 08:44:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3639. [2021-11-09 08:44:15,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3638 states have (on average 1.5365585486531061) internal successors, (5590), 3638 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5590 transitions. [2021-11-09 08:44:16,015 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5590 transitions. Word has length 93 [2021-11-09 08:44:16,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:16,016 INFO L470 AbstractCegarLoop]: Abstraction has 3639 states and 5590 transitions. [2021-11-09 08:44:16,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:16,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5590 transitions. [2021-11-09 08:44:16,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:44:16,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:16,018 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:16,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:44:16,018 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:16,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:16,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1956436651, now seen corresponding path program 1 times [2021-11-09 08:44:16,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:16,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877988550] [2021-11-09 08:44:16,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:16,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:16,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:16,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877988550] [2021-11-09 08:44:16,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877988550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:16,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:16,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:44:16,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9278981] [2021-11-09 08:44:16,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:44:16,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:44:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:44:16,116 INFO L87 Difference]: Start difference. First operand 3639 states and 5590 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:16,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:16,512 INFO L93 Difference]: Finished difference Result 7225 states and 11127 transitions. [2021-11-09 08:44:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:44:16,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-09 08:44:16,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:16,539 INFO L225 Difference]: With dead ends: 7225 [2021-11-09 08:44:16,539 INFO L226 Difference]: Without dead ends: 3639 [2021-11-09 08:44:16,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:44:16,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2021-11-09 08:44:16,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3639. [2021-11-09 08:44:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3638 states have (on average 1.518966465090709) internal successors, (5526), 3638 states have internal predecessors, (5526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5526 transitions. [2021-11-09 08:44:16,919 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5526 transitions. Word has length 93 [2021-11-09 08:44:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:16,919 INFO L470 AbstractCegarLoop]: Abstraction has 3639 states and 5526 transitions. [2021-11-09 08:44:16,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5526 transitions. [2021-11-09 08:44:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:44:16,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:16,921 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:16,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:44:16,922 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash -803132720, now seen corresponding path program 1 times [2021-11-09 08:44:16,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:16,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115063142] [2021-11-09 08:44:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:16,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:17,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:17,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115063142] [2021-11-09 08:44:17,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115063142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:17,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:17,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:44:17,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055147131] [2021-11-09 08:44:17,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:44:17,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:17,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:44:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:44:17,055 INFO L87 Difference]: Start difference. First operand 3639 states and 5526 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:17,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:17,909 INFO L93 Difference]: Finished difference Result 10779 states and 16408 transitions. [2021-11-09 08:44:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:44:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-09 08:44:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:17,962 INFO L225 Difference]: With dead ends: 10779 [2021-11-09 08:44:17,963 INFO L226 Difference]: Without dead ends: 7193 [2021-11-09 08:44:17,971 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:44:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7193 states. [2021-11-09 08:44:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7193 to 7191. [2021-11-09 08:44:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7191 states, 7190 states have (on average 1.5162726008344924) internal successors, (10902), 7190 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7191 states to 7191 states and 10902 transitions. [2021-11-09 08:44:18,635 INFO L78 Accepts]: Start accepts. Automaton has 7191 states and 10902 transitions. Word has length 93 [2021-11-09 08:44:18,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:18,635 INFO L470 AbstractCegarLoop]: Abstraction has 7191 states and 10902 transitions. [2021-11-09 08:44:18,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:18,636 INFO L276 IsEmpty]: Start isEmpty. Operand 7191 states and 10902 transitions. [2021-11-09 08:44:18,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:44:18,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:18,638 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:18,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:44:18,639 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:18,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:18,640 INFO L85 PathProgramCache]: Analyzing trace with hash 918198155, now seen corresponding path program 1 times [2021-11-09 08:44:18,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:18,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389391772] [2021-11-09 08:44:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:18,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:18,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:18,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389391772] [2021-11-09 08:44:18,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389391772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:18,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:18,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:44:18,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385010743] [2021-11-09 08:44:18,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:44:18,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:18,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:44:18,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:44:18,763 INFO L87 Difference]: Start difference. First operand 7191 states and 10902 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:20,096 INFO L93 Difference]: Finished difference Result 21403 states and 32472 transitions. [2021-11-09 08:44:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:44:20,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-09 08:44:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:20,168 INFO L225 Difference]: With dead ends: 21403 [2021-11-09 08:44:20,168 INFO L226 Difference]: Without dead ends: 14265 [2021-11-09 08:44:20,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:44:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14265 states. [2021-11-09 08:44:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14265 to 14263. [2021-11-09 08:44:21,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14263 states, 14262 states have (on average 1.511569204880101) internal successors, (21558), 14262 states have internal predecessors, (21558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14263 states to 14263 states and 21558 transitions. [2021-11-09 08:44:21,157 INFO L78 Accepts]: Start accepts. Automaton has 14263 states and 21558 transitions. Word has length 93 [2021-11-09 08:44:21,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:21,158 INFO L470 AbstractCegarLoop]: Abstraction has 14263 states and 21558 transitions. [2021-11-09 08:44:21,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:21,159 INFO L276 IsEmpty]: Start isEmpty. Operand 14263 states and 21558 transitions. [2021-11-09 08:44:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:44:21,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:21,160 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:21,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:44:21,161 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:21,162 INFO L85 PathProgramCache]: Analyzing trace with hash -545873402, now seen corresponding path program 1 times [2021-11-09 08:44:21,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:21,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609032120] [2021-11-09 08:44:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:21,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:21,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:21,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609032120] [2021-11-09 08:44:21,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609032120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:21,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:21,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:44:21,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370959693] [2021-11-09 08:44:21,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:44:21,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:21,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:44:21,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:44:21,251 INFO L87 Difference]: Start difference. First operand 14263 states and 21558 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:22,533 INFO L93 Difference]: Finished difference Result 28473 states and 43063 transitions. [2021-11-09 08:44:22,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:44:22,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-09 08:44:22,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:22,587 INFO L225 Difference]: With dead ends: 28473 [2021-11-09 08:44:22,588 INFO L226 Difference]: Without dead ends: 14263 [2021-11-09 08:44:22,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:44:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14263 states. [2021-11-09 08:44:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14263 to 14263. [2021-11-09 08:44:23,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14263 states, 14262 states have (on average 1.5025943065488712) internal successors, (21430), 14262 states have internal predecessors, (21430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14263 states to 14263 states and 21430 transitions. [2021-11-09 08:44:23,619 INFO L78 Accepts]: Start accepts. Automaton has 14263 states and 21430 transitions. Word has length 93 [2021-11-09 08:44:23,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:23,620 INFO L470 AbstractCegarLoop]: Abstraction has 14263 states and 21430 transitions. [2021-11-09 08:44:23,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 14263 states and 21430 transitions. [2021-11-09 08:44:23,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:44:23,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:23,621 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:23,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 08:44:23,622 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:23,623 INFO L85 PathProgramCache]: Analyzing trace with hash 727994603, now seen corresponding path program 1 times [2021-11-09 08:44:23,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:23,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081678908] [2021-11-09 08:44:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:23,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:23,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:23,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081678908] [2021-11-09 08:44:23,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081678908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:23,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:23,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:44:23,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112611705] [2021-11-09 08:44:23,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:44:23,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:23,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:44:23,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:44:23,964 INFO L87 Difference]: Start difference. First operand 14263 states and 21430 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:33,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:33,882 INFO L93 Difference]: Finished difference Result 156363 states and 235200 transitions. [2021-11-09 08:44:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:44:33,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-09 08:44:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:34,432 INFO L225 Difference]: With dead ends: 156363 [2021-11-09 08:44:34,433 INFO L226 Difference]: Without dead ends: 142153 [2021-11-09 08:44:34,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:44:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142153 states. [2021-11-09 08:44:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142153 to 28471. [2021-11-09 08:44:39,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28471 states, 28470 states have (on average 1.485563751317176) internal successors, (42294), 28470 states have internal predecessors, (42294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28471 states to 28471 states and 42294 transitions. [2021-11-09 08:44:39,287 INFO L78 Accepts]: Start accepts. Automaton has 28471 states and 42294 transitions. Word has length 93 [2021-11-09 08:44:39,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:39,287 INFO L470 AbstractCegarLoop]: Abstraction has 28471 states and 42294 transitions. [2021-11-09 08:44:39,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 28471 states and 42294 transitions. [2021-11-09 08:44:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-09 08:44:39,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:39,290 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:39,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:44:39,291 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:39,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:39,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1398673945, now seen corresponding path program 1 times [2021-11-09 08:44:39,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:39,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312613654] [2021-11-09 08:44:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:39,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:39,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:39,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312613654] [2021-11-09 08:44:39,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312613654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:39,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:39,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:44:39,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095932152] [2021-11-09 08:44:39,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:44:39,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:39,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:44:39,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:44:39,402 INFO L87 Difference]: Start difference. First operand 28471 states and 42294 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:44,860 INFO L93 Difference]: Finished difference Result 82491 states and 121912 transitions. [2021-11-09 08:44:44,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:44:44,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-09 08:44:44,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:44,976 INFO L225 Difference]: With dead ends: 82491 [2021-11-09 08:44:44,976 INFO L226 Difference]: Without dead ends: 54073 [2021-11-09 08:44:45,013 INFO L786 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 [2021-11-09 08:44:45,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54073 states. [2021-11-09 08:44:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54073 to 53559. [2021-11-09 08:44:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53559 states, 53558 states have (on average 1.4540871578475671) internal successors, (77878), 53558 states have internal predecessors, (77878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53559 states to 53559 states and 77878 transitions. [2021-11-09 08:44:50,010 INFO L78 Accepts]: Start accepts. Automaton has 53559 states and 77878 transitions. Word has length 95 [2021-11-09 08:44:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:50,011 INFO L470 AbstractCegarLoop]: Abstraction has 53559 states and 77878 transitions. [2021-11-09 08:44:50,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:44:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 53559 states and 77878 transitions. [2021-11-09 08:44:50,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-09 08:44:50,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:50,013 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:50,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 08:44:50,013 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:44:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1377671290, now seen corresponding path program 1 times [2021-11-09 08:44:50,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:50,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779007983] [2021-11-09 08:44:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:50,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:50,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:50,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779007983] [2021-11-09 08:44:50,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779007983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:50,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:50,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:44:50,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135668237] [2021-11-09 08:44:50,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:44:50,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:50,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:44:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:44:50,480 INFO L87 Difference]: Start difference. First operand 53559 states and 77878 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)