./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa --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 648a34748ee6f317001c61f0628c2e00b2100c77ff87e7d85b52ec2f91d6d096 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:04:06,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:04:06,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:04:06,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:04:06,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:04:06,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:04:06,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:04:06,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:04:06,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:04:06,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:04:06,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:04:06,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:04:06,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:04:06,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:04:06,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:04:06,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:04:06,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:04:06,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:04:06,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:04:06,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:04:06,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:04:06,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:04:06,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:04:06,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:04:06,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:04:06,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:04:06,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:04:06,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:04:06,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:04:06,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:04:06,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:04:06,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:04:06,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:04:06,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:04:06,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:04:06,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:04:06,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:04:06,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:04:06,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:04:06,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:04:06,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:04:06,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:04:06,696 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:04:06,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:04:06,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:04:06,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:04:06,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:04:06,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:04:06,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:04:06,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:04:06,698 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:04:06,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:04:06,698 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:04:06,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:04:06,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:04:06,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:04:06,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:04:06,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:04:06,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:04:06,699 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:04:06,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:04:06,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:04:06,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:04:06,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:04:06,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:04:06,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:04:06,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:04:06,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:04:06,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:04:06,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:04:06,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:04:06,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:04:06,701 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:04:06,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:04:06,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:04:06,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:04:06,702 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_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 648a34748ee6f317001c61f0628c2e00b2100c77ff87e7d85b52ec2f91d6d096 [2021-12-07 00:04:06,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:04:06,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:04:06,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:04:06,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:04:06,932 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:04:06,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2021-12-07 00:04:06,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/data/17b9b14c0/9564ef3ad4114b36888974cad1a876d2/FLAGa4fd2f552 [2021-12-07 00:04:07,390 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:04:07,390 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2021-12-07 00:04:07,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/data/17b9b14c0/9564ef3ad4114b36888974cad1a876d2/FLAGa4fd2f552 [2021-12-07 00:04:07,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/data/17b9b14c0/9564ef3ad4114b36888974cad1a876d2 [2021-12-07 00:04:07,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:04:07,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:04:07,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:04:07,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:04:07,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:04:07,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38654ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07, skipping insertion in model container [2021-12-07 00:04:07,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:04:07,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:04:07,623 WARN L230 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_1daf8734-0ec8-4815-847e-1981d71d73bc/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2021-12-07 00:04:07,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:04:07,633 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:04:07,681 WARN L230 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_1daf8734-0ec8-4815-847e-1981d71d73bc/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2021-12-07 00:04:07,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:04:07,695 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:04:07,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07 WrapperNode [2021-12-07 00:04:07,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:04:07,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:04:07,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:04:07,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:04:07,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,746 INFO L137 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 455 [2021-12-07 00:04:07,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:04:07,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:04:07,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:04:07,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:04:07,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:04:07,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:04:07,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:04:07,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:04:07,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (1/1) ... [2021-12-07 00:04:07,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:04:07,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:04:07,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:04:07,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:04:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:04:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:04:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:04:07,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:04:07,933 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:04:07,934 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:04:08,287 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:04:08,293 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:04:08,293 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:04:08,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:04:08 BoogieIcfgContainer [2021-12-07 00:04:08,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:04:08,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:04:08,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:04:08,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:04:08,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:04:07" (1/3) ... [2021-12-07 00:04:08,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4120b591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:04:08, skipping insertion in model container [2021-12-07 00:04:08,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:07" (2/3) ... [2021-12-07 00:04:08,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4120b591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:04:08, skipping insertion in model container [2021-12-07 00:04:08,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:04:08" (3/3) ... [2021-12-07 00:04:08,301 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2021-12-07 00:04:08,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:04:08,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:04:08,340 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:04:08,345 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 [2021-12-07 00:04:08,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:04:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 140 states have (on average 1.7214285714285715) internal successors, (241), 141 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 00:04:08,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:08,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:08,366 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:08,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1765981308, now seen corresponding path program 1 times [2021-12-07 00:04:08,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:08,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993968848] [2021-12-07 00:04:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:08,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:08,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:08,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993968848] [2021-12-07 00:04:08,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993968848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:08,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:08,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:04:08,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050181516] [2021-12-07 00:04:08,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:08,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:04:08,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:08,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:04:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:04:08,584 INFO L87 Difference]: Start difference. First operand has 142 states, 140 states have (on average 1.7214285714285715) internal successors, (241), 141 states have internal predecessors, (241), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:08,677 INFO L93 Difference]: Finished difference Result 241 states and 398 transitions. [2021-12-07 00:04:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:04:08,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-12-07 00:04:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:08,690 INFO L225 Difference]: With dead ends: 241 [2021-12-07 00:04:08,690 INFO L226 Difference]: Without dead ends: 138 [2021-12-07 00:04:08,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:04:08,696 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 3 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:08,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 900 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-12-07 00:04:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-12-07 00:04:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4087591240875912) internal successors, (193), 137 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 193 transitions. [2021-12-07 00:04:08,730 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 193 transitions. Word has length 37 [2021-12-07 00:04:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:08,730 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 193 transitions. [2021-12-07 00:04:08,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 193 transitions. [2021-12-07 00:04:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-07 00:04:08,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:08,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:08,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:04:08,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:08,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:08,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1408949682, now seen corresponding path program 1 times [2021-12-07 00:04:08,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:08,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601615176] [2021-12-07 00:04:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:08,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:08,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:08,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601615176] [2021-12-07 00:04:08,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601615176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:08,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:08,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:04:08,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301144952] [2021-12-07 00:04:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:08,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:04:08,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:08,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:04:08,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:08,832 INFO L87 Difference]: Start difference. First operand 138 states and 193 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:08,855 INFO L93 Difference]: Finished difference Result 308 states and 465 transitions. [2021-12-07 00:04:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:04:08,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-12-07 00:04:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:08,857 INFO L225 Difference]: With dead ends: 308 [2021-12-07 00:04:08,858 INFO L226 Difference]: Without dead ends: 217 [2021-12-07 00:04:08,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:08,859 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 130 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:08,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 438 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-07 00:04:08,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2021-12-07 00:04:08,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4813084112149533) internal successors, (317), 214 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 317 transitions. [2021-12-07 00:04:08,874 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 317 transitions. Word has length 77 [2021-12-07 00:04:08,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:08,874 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 317 transitions. [2021-12-07 00:04:08,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:08,874 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 317 transitions. [2021-12-07 00:04:08,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-07 00:04:08,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:08,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:08,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:04:08,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:08,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:08,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1762847602, now seen corresponding path program 1 times [2021-12-07 00:04:08,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:08,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517642880] [2021-12-07 00:04:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:08,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:08,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:08,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517642880] [2021-12-07 00:04:08,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517642880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:08,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:08,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:04:08,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335193797] [2021-12-07 00:04:08,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:08,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:04:08,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:08,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:04:08,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:08,946 INFO L87 Difference]: Start difference. First operand 215 states and 317 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:08,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:08,966 INFO L93 Difference]: Finished difference Result 527 states and 817 transitions. [2021-12-07 00:04:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:04:08,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-07 00:04:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:08,971 INFO L225 Difference]: With dead ends: 527 [2021-12-07 00:04:08,971 INFO L226 Difference]: Without dead ends: 359 [2021-12-07 00:04:08,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:08,974 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 125 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:08,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 429 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-07 00:04:08,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2021-12-07 00:04:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.5280898876404494) internal successors, (544), 356 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 544 transitions. [2021-12-07 00:04:09,000 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 544 transitions. Word has length 78 [2021-12-07 00:04:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:09,001 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 544 transitions. [2021-12-07 00:04:09,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 544 transitions. [2021-12-07 00:04:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-07 00:04:09,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:09,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:09,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:04:09,003 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:09,004 INFO L85 PathProgramCache]: Analyzing trace with hash -863425826, now seen corresponding path program 1 times [2021-12-07 00:04:09,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:09,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191287413] [2021-12-07 00:04:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:09,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:09,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:09,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191287413] [2021-12-07 00:04:09,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191287413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:09,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:09,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:04:09,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096782876] [2021-12-07 00:04:09,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:09,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:04:09,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:09,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:04:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:09,062 INFO L87 Difference]: Start difference. First operand 357 states and 544 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:09,085 INFO L93 Difference]: Finished difference Result 929 states and 1458 transitions. [2021-12-07 00:04:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:04:09,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-12-07 00:04:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:09,089 INFO L225 Difference]: With dead ends: 929 [2021-12-07 00:04:09,089 INFO L226 Difference]: Without dead ends: 619 [2021-12-07 00:04:09,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:09,092 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 120 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:09,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 420 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-12-07 00:04:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2021-12-07 00:04:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.551948051948052) internal successors, (956), 616 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 956 transitions. [2021-12-07 00:04:09,112 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 956 transitions. Word has length 79 [2021-12-07 00:04:09,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:09,113 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 956 transitions. [2021-12-07 00:04:09,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,113 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 956 transitions. [2021-12-07 00:04:09,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-07 00:04:09,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:09,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:09,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:04:09,114 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:09,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:09,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2005690142, now seen corresponding path program 1 times [2021-12-07 00:04:09,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:09,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489645124] [2021-12-07 00:04:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:09,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:09,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:09,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489645124] [2021-12-07 00:04:09,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489645124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:09,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:09,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:04:09,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965060027] [2021-12-07 00:04:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:09,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:04:09,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:09,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:04:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:09,173 INFO L87 Difference]: Start difference. First operand 617 states and 956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:09,203 INFO L93 Difference]: Finished difference Result 1661 states and 2614 transitions. [2021-12-07 00:04:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:04:09,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-12-07 00:04:09,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:09,208 INFO L225 Difference]: With dead ends: 1661 [2021-12-07 00:04:09,209 INFO L226 Difference]: Without dead ends: 1091 [2021-12-07 00:04:09,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:09,210 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 115 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:09,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 411 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:09,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2021-12-07 00:04:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1089. [2021-12-07 00:04:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 1.5588235294117647) internal successors, (1696), 1088 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1696 transitions. [2021-12-07 00:04:09,242 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1696 transitions. Word has length 80 [2021-12-07 00:04:09,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:09,242 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 1696 transitions. [2021-12-07 00:04:09,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1696 transitions. [2021-12-07 00:04:09,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-07 00:04:09,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:09,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:09,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:04:09,244 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:09,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:09,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1850213230, now seen corresponding path program 1 times [2021-12-07 00:04:09,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:09,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089273229] [2021-12-07 00:04:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:09,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:09,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:09,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089273229] [2021-12-07 00:04:09,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089273229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:09,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:09,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:04:09,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966754591] [2021-12-07 00:04:09,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:09,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:04:09,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:09,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:04:09,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:09,286 INFO L87 Difference]: Start difference. First operand 1089 states and 1696 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:09,326 INFO L93 Difference]: Finished difference Result 2981 states and 4674 transitions. [2021-12-07 00:04:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:04:09,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-12-07 00:04:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:09,335 INFO L225 Difference]: With dead ends: 2981 [2021-12-07 00:04:09,335 INFO L226 Difference]: Without dead ends: 1939 [2021-12-07 00:04:09,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:09,337 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 110 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:09,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 402 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:09,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2021-12-07 00:04:09,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1937. [2021-12-07 00:04:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 1.5537190082644627) internal successors, (3008), 1936 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3008 transitions. [2021-12-07 00:04:09,399 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3008 transitions. Word has length 81 [2021-12-07 00:04:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:09,399 INFO L470 AbstractCegarLoop]: Abstraction has 1937 states and 3008 transitions. [2021-12-07 00:04:09,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3008 transitions. [2021-12-07 00:04:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-07 00:04:09,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:09,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:09,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:04:09,400 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:09,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:09,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1094060462, now seen corresponding path program 1 times [2021-12-07 00:04:09,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:09,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670882545] [2021-12-07 00:04:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:09,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:09,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:09,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670882545] [2021-12-07 00:04:09,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670882545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:09,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:09,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:04:09,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153507719] [2021-12-07 00:04:09,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:09,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:04:09,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:04:09,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:04:09,469 INFO L87 Difference]: Start difference. First operand 1937 states and 3008 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:09,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:09,898 INFO L93 Difference]: Finished difference Result 15167 states and 23735 transitions. [2021-12-07 00:04:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:04:09,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-07 00:04:09,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:09,957 INFO L225 Difference]: With dead ends: 15167 [2021-12-07 00:04:09,957 INFO L226 Difference]: Without dead ends: 13277 [2021-12-07 00:04:09,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:04:09,963 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1946 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:09,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1946 Valid, 2529 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:04:09,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13277 states. [2021-12-07 00:04:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13277 to 3825. [2021-12-07 00:04:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3825 states, 3824 states have (on average 1.5439330543933054) internal successors, (5904), 3824 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 5904 transitions. [2021-12-07 00:04:10,247 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 5904 transitions. Word has length 82 [2021-12-07 00:04:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:10,247 INFO L470 AbstractCegarLoop]: Abstraction has 3825 states and 5904 transitions. [2021-12-07 00:04:10,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 5904 transitions. [2021-12-07 00:04:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-07 00:04:10,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:10,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:10,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:04:10,248 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:10,249 INFO L85 PathProgramCache]: Analyzing trace with hash -827187160, now seen corresponding path program 1 times [2021-12-07 00:04:10,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:10,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616856182] [2021-12-07 00:04:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:10,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:10,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:10,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616856182] [2021-12-07 00:04:10,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616856182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:10,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:10,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:04:10,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203318092] [2021-12-07 00:04:10,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:10,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:04:10,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:10,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:04:10,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:04:10,366 INFO L87 Difference]: Start difference. First operand 3825 states and 5904 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:11,086 INFO L93 Difference]: Finished difference Result 24093 states and 36886 transitions. [2021-12-07 00:04:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:04:11,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-12-07 00:04:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:11,149 INFO L225 Difference]: With dead ends: 24093 [2021-12-07 00:04:11,149 INFO L226 Difference]: Without dead ends: 20315 [2021-12-07 00:04:11,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:04:11,157 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1039 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:11,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 1092 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:04:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20315 states. [2021-12-07 00:04:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20315 to 20305. [2021-12-07 00:04:11,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20305 states, 20304 states have (on average 1.524822695035461) internal successors, (30960), 20304 states have internal predecessors, (30960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:11,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20305 states to 20305 states and 30960 transitions. [2021-12-07 00:04:11,922 INFO L78 Accepts]: Start accepts. Automaton has 20305 states and 30960 transitions. Word has length 83 [2021-12-07 00:04:11,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:11,922 INFO L470 AbstractCegarLoop]: Abstraction has 20305 states and 30960 transitions. [2021-12-07 00:04:11,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 20305 states and 30960 transitions. [2021-12-07 00:04:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-07 00:04:11,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:11,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:11,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:04:11,924 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:11,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:11,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1388927858, now seen corresponding path program 1 times [2021-12-07 00:04:11,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:11,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868874005] [2021-12-07 00:04:11,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:11,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:11,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:11,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868874005] [2021-12-07 00:04:11,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868874005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:11,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:11,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:04:11,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275230346] [2021-12-07 00:04:11,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:11,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:04:11,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:04:11,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:11,984 INFO L87 Difference]: Start difference. First operand 20305 states and 30960 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:12,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:12,855 INFO L93 Difference]: Finished difference Result 57365 states and 87026 transitions. [2021-12-07 00:04:12,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:04:12,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-12-07 00:04:12,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:12,911 INFO L225 Difference]: With dead ends: 57365 [2021-12-07 00:04:12,912 INFO L226 Difference]: Without dead ends: 37107 [2021-12-07 00:04:12,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:12,933 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 134 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:12,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 462 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37107 states. [2021-12-07 00:04:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37107 to 37105. [2021-12-07 00:04:14,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37105 states, 37104 states have (on average 1.5019404915912031) internal successors, (55728), 37104 states have internal predecessors, (55728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37105 states to 37105 states and 55728 transitions. [2021-12-07 00:04:14,097 INFO L78 Accepts]: Start accepts. Automaton has 37105 states and 55728 transitions. Word has length 83 [2021-12-07 00:04:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:14,097 INFO L470 AbstractCegarLoop]: Abstraction has 37105 states and 55728 transitions. [2021-12-07 00:04:14,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 37105 states and 55728 transitions. [2021-12-07 00:04:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-07 00:04:14,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:14,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:14,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:04:14,099 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:14,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1504349213, now seen corresponding path program 1 times [2021-12-07 00:04:14,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:14,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322333587] [2021-12-07 00:04:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:14,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:14,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:14,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322333587] [2021-12-07 00:04:14,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322333587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:14,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:14,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:04:14,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131286084] [2021-12-07 00:04:14,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:14,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:04:14,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:14,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:04:14,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:04:14,179 INFO L87 Difference]: Start difference. First operand 37105 states and 55728 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:16,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:16,367 INFO L93 Difference]: Finished difference Result 77235 states and 114481 transitions. [2021-12-07 00:04:16,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:04:16,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-12-07 00:04:16,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:16,495 INFO L225 Difference]: With dead ends: 77235 [2021-12-07 00:04:16,495 INFO L226 Difference]: Without dead ends: 77233 [2021-12-07 00:04:16,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:04:16,511 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 1062 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:16,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 955 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77233 states. [2021-12-07 00:04:18,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77233 to 39409. [2021-12-07 00:04:18,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39409 states, 39408 states have (on average 1.4725943970767357) internal successors, (58032), 39408 states have internal predecessors, (58032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39409 states to 39409 states and 58032 transitions. [2021-12-07 00:04:18,283 INFO L78 Accepts]: Start accepts. Automaton has 39409 states and 58032 transitions. Word has length 84 [2021-12-07 00:04:18,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:18,283 INFO L470 AbstractCegarLoop]: Abstraction has 39409 states and 58032 transitions. [2021-12-07 00:04:18,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 39409 states and 58032 transitions. [2021-12-07 00:04:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-07 00:04:18,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:18,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:18,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:04:18,285 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash 662393451, now seen corresponding path program 1 times [2021-12-07 00:04:18,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:18,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571935843] [2021-12-07 00:04:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:18,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:18,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:18,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571935843] [2021-12-07 00:04:18,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571935843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:18,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:18,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:04:18,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224737784] [2021-12-07 00:04:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:18,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:04:18,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:18,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:04:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:18,318 INFO L87 Difference]: Start difference. First operand 39409 states and 58032 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:19,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:19,936 INFO L93 Difference]: Finished difference Result 95831 states and 141140 transitions. [2021-12-07 00:04:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:04:19,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-12-07 00:04:19,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:19,999 INFO L225 Difference]: With dead ends: 95831 [2021-12-07 00:04:19,999 INFO L226 Difference]: Without dead ends: 56469 [2021-12-07 00:04:20,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:20,031 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 101 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:20,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56469 states. [2021-12-07 00:04:22,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56469 to 56467. [2021-12-07 00:04:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56467 states, 56466 states have (on average 1.4664045620373323) internal successors, (82802), 56466 states have internal predecessors, (82802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56467 states to 56467 states and 82802 transitions. [2021-12-07 00:04:22,318 INFO L78 Accepts]: Start accepts. Automaton has 56467 states and 82802 transitions. Word has length 85 [2021-12-07 00:04:22,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:22,319 INFO L470 AbstractCegarLoop]: Abstraction has 56467 states and 82802 transitions. [2021-12-07 00:04:22,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 56467 states and 82802 transitions. [2021-12-07 00:04:22,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-07 00:04:22,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:22,343 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:22,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:04:22,344 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1460670259, now seen corresponding path program 1 times [2021-12-07 00:04:22,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:22,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839753887] [2021-12-07 00:04:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:22,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:04:22,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:22,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839753887] [2021-12-07 00:04:22,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839753887] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:04:22,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237430103] [2021-12-07 00:04:22,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:22,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:22,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:04:22,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:04:22,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:04:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:22,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 00:04:22,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:04:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:04:22,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:04:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:04:23,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237430103] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:04:23,249 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:04:23,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2021-12-07 00:04:23,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433512395] [2021-12-07 00:04:23,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:04:23,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:04:23,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:23,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:04:23,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:04:23,250 INFO L87 Difference]: Start difference. First operand 56467 states and 82802 transitions. Second operand has 9 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:27,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:27,538 INFO L93 Difference]: Finished difference Result 176397 states and 260408 transitions. [2021-12-07 00:04:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:04:27,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 0 states have call successors, (0), 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 116 [2021-12-07 00:04:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:27,694 INFO L225 Difference]: With dead ends: 176397 [2021-12-07 00:04:27,694 INFO L226 Difference]: Without dead ends: 137035 [2021-12-07 00:04:27,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:04:27,723 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 911 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:27,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 1181 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:27,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137035 states. [2021-12-07 00:04:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137035 to 130067. [2021-12-07 00:04:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130067 states, 130066 states have (on average 1.4642566081835375) internal successors, (190450), 130066 states have internal predecessors, (190450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130067 states to 130067 states and 190450 transitions. [2021-12-07 00:04:32,944 INFO L78 Accepts]: Start accepts. Automaton has 130067 states and 190450 transitions. Word has length 116 [2021-12-07 00:04:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:32,944 INFO L470 AbstractCegarLoop]: Abstraction has 130067 states and 190450 transitions. [2021-12-07 00:04:32,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand 130067 states and 190450 transitions. [2021-12-07 00:04:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:04:32,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:32,965 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:32,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:04:33,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1daf8734-0ec8-4815-847e-1981d71d73bc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-07 00:04:33,166 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:33,168 INFO L85 PathProgramCache]: Analyzing trace with hash 761837313, now seen corresponding path program 1 times [2021-12-07 00:04:33,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:33,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793159166] [2021-12-07 00:04:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:33,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:33,272 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 00:04:33,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:33,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793159166] [2021-12-07 00:04:33,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793159166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:33,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:33,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:04:33,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214543874] [2021-12-07 00:04:33,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:33,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:04:33,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:33,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:04:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:04:33,273 INFO L87 Difference]: Start difference. First operand 130067 states and 190450 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:42,312 INFO L93 Difference]: Finished difference Result 342785 states and 505113 transitions. [2021-12-07 00:04:42,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:04:42,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-12-07 00:04:42,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:42,677 INFO L225 Difference]: With dead ends: 342785 [2021-12-07 00:04:42,677 INFO L226 Difference]: Without dead ends: 295999 [2021-12-07 00:04:42,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:04:42,740 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1691 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:42,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 1750 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:04:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295999 states. [2021-12-07 00:04:50,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295999 to 174931. [2021-12-07 00:04:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174931 states, 174930 states have (on average 1.4644600697421826) internal successors, (256178), 174930 states have internal predecessors, (256178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174931 states to 174931 states and 256178 transitions. [2021-12-07 00:04:50,551 INFO L78 Accepts]: Start accepts. Automaton has 174931 states and 256178 transitions. Word has length 117 [2021-12-07 00:04:50,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:50,551 INFO L470 AbstractCegarLoop]: Abstraction has 174931 states and 256178 transitions. [2021-12-07 00:04:50,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 174931 states and 256178 transitions. [2021-12-07 00:04:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:04:50,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:50,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:04:50,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:04:50,572 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:50,573 INFO L85 PathProgramCache]: Analyzing trace with hash 739766161, now seen corresponding path program 1 times [2021-12-07 00:04:50,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:50,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164080450] [2021-12-07 00:04:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:50,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:50,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:50,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164080450] [2021-12-07 00:04:50,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164080450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:50,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:50,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:04:50,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741290017] [2021-12-07 00:04:50,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:50,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:04:50,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:50,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:04:50,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:50,611 INFO L87 Difference]: Start difference. First operand 174931 states and 256178 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:04:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:59,179 INFO L93 Difference]: Finished difference Result 362642 states and 531731 transitions. [2021-12-07 00:04:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:04:59,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-12-07 00:04:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:59,521 INFO L225 Difference]: With dead ends: 362642 [2021-12-07 00:04:59,521 INFO L226 Difference]: Without dead ends: 258816 [2021-12-07 00:04:59,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:59,591 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 102 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:59,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 409 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258816 states. [2021-12-07 00:05:09,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258816 to 244702. [2021-12-07 00:05:09,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244702 states, 244701 states have (on average 1.4522253689196203) internal successors, (355361), 244701 states have internal predecessors, (355361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244702 states to 244702 states and 355361 transitions. [2021-12-07 00:05:09,862 INFO L78 Accepts]: Start accepts. Automaton has 244702 states and 355361 transitions. Word has length 117 [2021-12-07 00:05:09,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:09,862 INFO L470 AbstractCegarLoop]: Abstraction has 244702 states and 355361 transitions. [2021-12-07 00:05:09,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 244702 states and 355361 transitions. [2021-12-07 00:05:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:05:09,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:09,888 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:09,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:05:09,888 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash -313345871, now seen corresponding path program 1 times [2021-12-07 00:05:09,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:09,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102465808] [2021-12-07 00:05:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:09,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:09,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:09,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102465808] [2021-12-07 00:05:09,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102465808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:09,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:09,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:05:09,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82388890] [2021-12-07 00:05:09,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:09,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:05:09,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:09,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:05:09,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:05:09,922 INFO L87 Difference]: Start difference. First operand 244702 states and 355361 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:19,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:19,496 INFO L93 Difference]: Finished difference Result 351803 states and 510229 transitions. [2021-12-07 00:05:19,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:05:19,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-12-07 00:05:19,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:19,818 INFO L225 Difference]: With dead ends: 351803 [2021-12-07 00:05:19,818 INFO L226 Difference]: Without dead ends: 249217 [2021-12-07 00:05:19,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:05:19,885 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 104 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:19,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 435 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249217 states. [2021-12-07 00:05:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249217 to 244821. [2021-12-07 00:05:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244821 states, 244820 states have (on average 1.4336083653296299) internal successors, (350976), 244820 states have internal predecessors, (350976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244821 states to 244821 states and 350976 transitions. [2021-12-07 00:05:29,892 INFO L78 Accepts]: Start accepts. Automaton has 244821 states and 350976 transitions. Word has length 117 [2021-12-07 00:05:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:29,892 INFO L470 AbstractCegarLoop]: Abstraction has 244821 states and 350976 transitions. [2021-12-07 00:05:29,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 244821 states and 350976 transitions. [2021-12-07 00:05:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:05:29,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:29,915 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:29,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 00:05:29,915 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:29,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash -740691935, now seen corresponding path program 1 times [2021-12-07 00:05:29,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:29,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427655416] [2021-12-07 00:05:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:29,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:29,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:29,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427655416] [2021-12-07 00:05:29,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427655416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:29,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:29,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:05:29,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651327015] [2021-12-07 00:05:29,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:29,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:05:29,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:29,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:05:29,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:05:29,950 INFO L87 Difference]: Start difference. First operand 244821 states and 350976 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:41,756 INFO L93 Difference]: Finished difference Result 471159 states and 675551 transitions. [2021-12-07 00:05:41,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:05:41,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-12-07 00:05:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:42,337 INFO L225 Difference]: With dead ends: 471159 [2021-12-07 00:05:42,337 INFO L226 Difference]: Without dead ends: 325423 [2021-12-07 00:05:42,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:05:42,424 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 103 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:42,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 422 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:42,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325423 states. [2021-12-07 00:05:55,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325423 to 316077. [2021-12-07 00:05:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316077 states, 316076 states have (on average 1.4177223199483668) internal successors, (448108), 316076 states have internal predecessors, (448108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316077 states to 316077 states and 448108 transitions. [2021-12-07 00:05:56,158 INFO L78 Accepts]: Start accepts. Automaton has 316077 states and 448108 transitions. Word has length 117 [2021-12-07 00:05:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:56,158 INFO L470 AbstractCegarLoop]: Abstraction has 316077 states and 448108 transitions. [2021-12-07 00:05:56,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 316077 states and 448108 transitions. [2021-12-07 00:05:56,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:05:56,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:56,179 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:56,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 00:05:56,179 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:56,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:56,180 INFO L85 PathProgramCache]: Analyzing trace with hash 19416689, now seen corresponding path program 1 times [2021-12-07 00:05:56,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:56,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196700398] [2021-12-07 00:05:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:56,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:56,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:56,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196700398] [2021-12-07 00:05:56,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196700398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:56,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:56,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:05:56,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848825996] [2021-12-07 00:05:56,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:56,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:05:56,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:05:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:05:56,214 INFO L87 Difference]: Start difference. First operand 316077 states and 448108 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:17,627 INFO L93 Difference]: Finished difference Result 880188 states and 1244206 transitions. [2021-12-07 00:06:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:06:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-12-07 00:06:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:18,586 INFO L225 Difference]: With dead ends: 880188 [2021-12-07 00:06:18,587 INFO L226 Difference]: Without dead ends: 582758 [2021-12-07 00:06:18,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:06:18,764 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 99 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:18,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 383 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:06:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582758 states. [2021-12-07 00:06:43,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582758 to 575048. [2021-12-07 00:06:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575048 states, 575047 states have (on average 1.4005081323787447) internal successors, (805358), 575047 states have internal predecessors, (805358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575048 states to 575048 states and 805358 transitions. [2021-12-07 00:06:45,053 INFO L78 Accepts]: Start accepts. Automaton has 575048 states and 805358 transitions. Word has length 117 [2021-12-07 00:06:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:45,053 INFO L470 AbstractCegarLoop]: Abstraction has 575048 states and 805358 transitions. [2021-12-07 00:06:45,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 575048 states and 805358 transitions. [2021-12-07 00:06:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:06:45,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:45,096 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:45,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 00:06:45,096 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2110569159, now seen corresponding path program 1 times [2021-12-07 00:06:45,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:45,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080821337] [2021-12-07 00:06:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:45,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:45,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:45,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080821337] [2021-12-07 00:06:45,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080821337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:45,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:45,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:06:45,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411549131] [2021-12-07 00:06:45,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:45,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:06:45,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:06:45,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:06:45,130 INFO L87 Difference]: Start difference. First operand 575048 states and 805358 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:27,275 INFO L93 Difference]: Finished difference Result 1660665 states and 2320124 transitions. [2021-12-07 00:07:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:07:27,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-12-07 00:07:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:29,051 INFO L225 Difference]: With dead ends: 1660665 [2021-12-07 00:07:29,051 INFO L226 Difference]: Without dead ends: 1105503 [2021-12-07 00:07:29,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:07:29,572 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 99 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:29,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 380 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:07:30,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105503 states. [2021-12-07 00:08:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105503 to 1104853. [2021-12-07 00:08:18,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104853 states, 1104852 states have (on average 1.3842559908476428) internal successors, (1529398), 1104852 states have internal predecessors, (1529398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:08:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104853 states to 1104853 states and 1529398 transitions. [2021-12-07 00:08:20,769 INFO L78 Accepts]: Start accepts. Automaton has 1104853 states and 1529398 transitions. Word has length 117 [2021-12-07 00:08:20,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:08:20,769 INFO L470 AbstractCegarLoop]: Abstraction has 1104853 states and 1529398 transitions. [2021-12-07 00:08:20,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:08:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1104853 states and 1529398 transitions. [2021-12-07 00:08:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:08:20,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:08:20,838 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:08:20,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 00:08:20,839 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:08:20,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:08:20,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1549801961, now seen corresponding path program 1 times [2021-12-07 00:08:20,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:08:20,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762209066] [2021-12-07 00:08:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:08:20,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:08:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:08:20,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:08:20,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762209066] [2021-12-07 00:08:20,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762209066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:08:20,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:08:20,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:08:20,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432630864] [2021-12-07 00:08:20,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:08:20,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:08:20,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:08:20,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:08:20,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:08:20,909 INFO L87 Difference]: Start difference. First operand 1104853 states and 1529398 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:09:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:09:55,029 INFO L93 Difference]: Finished difference Result 2646941 states and 3695801 transitions. [2021-12-07 00:09:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:09:55,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 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 117 [2021-12-07 00:09:55,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:09:59,285 INFO L225 Difference]: With dead ends: 2646941 [2021-12-07 00:09:59,285 INFO L226 Difference]: Without dead ends: 2471451 [2021-12-07 00:10:00,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:10:00,130 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1848 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:10:00,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 1651 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:10:02,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471451 states. [2021-12-07 00:11:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471451 to 1272661. [2021-12-07 00:11:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272661 states, 1272660 states have (on average 1.3851853597975894) internal successors, (1762870), 1272660 states have internal predecessors, (1762870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:11:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272661 states to 1272661 states and 1762870 transitions. [2021-12-07 00:11:09,437 INFO L78 Accepts]: Start accepts. Automaton has 1272661 states and 1762870 transitions. Word has length 117 [2021-12-07 00:11:09,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:11:09,437 INFO L470 AbstractCegarLoop]: Abstraction has 1272661 states and 1762870 transitions. [2021-12-07 00:11:09,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:11:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1272661 states and 1762870 transitions. [2021-12-07 00:11:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:11:09,505 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:11:09,505 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:11:09,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 00:11:09,505 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:11:09,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:11:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash -199327647, now seen corresponding path program 1 times [2021-12-07 00:11:09,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:11:09,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088677736] [2021-12-07 00:11:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:11:09,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:11:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:11:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:11:09,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:11:09,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088677736] [2021-12-07 00:11:09,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088677736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:11:09,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:11:09,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:11:09,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707442640] [2021-12-07 00:11:09,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:11:09,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:11:09,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:11:09,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:11:09,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:11:09,569 INFO L87 Difference]: Start difference. First operand 1272661 states and 1762870 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:56,009 INFO L93 Difference]: Finished difference Result 2898232 states and 4046937 transitions. [2021-12-07 00:12:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:12:56,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-12-07 00:12:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:13:00,296 INFO L225 Difference]: With dead ends: 2898232 [2021-12-07 00:13:00,296 INFO L226 Difference]: Without dead ends: 2635408 [2021-12-07 00:13:01,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:13:01,054 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1663 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:13:01,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 1729 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:13:03,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635408 states. [2021-12-07 00:14:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635408 to 1523925. [2021-12-07 00:14:23,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523925 states, 1523924 states have (on average 1.385595344649733) internal successors, (2111542), 1523924 states have internal predecessors, (2111542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)