./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0 --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 e4ea09104fdfc6025836c8ea5917b899069d556f85aa19eff5395187d58ecb3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:53:37,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:53:37,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:53:37,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:53:37,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:53:37,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:53:37,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:53:37,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:53:37,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:53:37,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:53:37,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:53:37,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:53:37,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:53:37,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:53:37,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:53:37,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:53:37,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:53:37,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:53:37,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:53:37,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:53:37,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:53:37,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:53:37,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:53:37,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:53:37,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:53:37,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:53:37,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:53:37,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:53:37,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:53:37,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:53:37,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:53:37,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:53:37,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:53:37,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:53:37,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:53:37,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:53:37,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:53:37,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:53:37,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:53:37,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:53:37,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:53:37,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:53:37,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:53:37,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:53:37,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:53:37,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:53:37,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:53:37,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:53:37,557 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:53:37,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:53:37,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:53:37,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:53:37,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:53:37,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:53:37,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:53:37,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:53:37,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:53:37,560 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:53:37,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:53:37,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:53:37,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:53:37,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:53:37,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:53:37,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:53:37,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:53:37,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:53:37,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:53:37,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:53:37,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:53:37,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:53:37,563 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:53:37,563 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:53:37,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:53:37,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:53:37,564 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_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea09104fdfc6025836c8ea5917b899069d556f85aa19eff5395187d58ecb3d [2021-11-22 14:53:37,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:53:37,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:53:37,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:53:37,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:53:37,968 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:53:37,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-22 14:53:38,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/data/530861e72/40d2fdecd00e42ffabfbb969f5bbba86/FLAGdd86667cb [2021-11-22 14:53:38,664 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:53:38,665 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-22 14:53:38,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/data/530861e72/40d2fdecd00e42ffabfbb969f5bbba86/FLAGdd86667cb [2021-11-22 14:53:38,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/data/530861e72/40d2fdecd00e42ffabfbb969f5bbba86 [2021-11-22 14:53:38,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:53:38,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:53:38,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:53:38,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:53:38,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:53:38,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:53:38" (1/1) ... [2021-11-22 14:53:38,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efb277f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:38, skipping insertion in model container [2021-11-22 14:53:38,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:53:38" (1/1) ... [2021-11-22 14:53:38,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:53:38,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:53:39,304 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_6fb00633-46a0-4a82-8ae5-d70064784660/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[8640,8653] [2021-11-22 14:53:39,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:53:39,387 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:53:39,477 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_6fb00633-46a0-4a82-8ae5-d70064784660/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[8640,8653] [2021-11-22 14:53:39,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:53:39,524 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:53:39,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39 WrapperNode [2021-11-22 14:53:39,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:53:39,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:53:39,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:53:39,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:53:39,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (1/1) ... [2021-11-22 14:53:39,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (1/1) ... [2021-11-22 14:53:39,608 INFO L137 Inliner]: procedures = 28, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 657 [2021-11-22 14:53:39,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:53:39,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:53:39,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:53:39,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:53:39,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (1/1) ... [2021-11-22 14:53:39,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (1/1) ... [2021-11-22 14:53:39,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (1/1) ... [2021-11-22 14:53:39,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (1/1) ... [2021-11-22 14:53:39,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (1/1) ... [2021-11-22 14:53:39,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (1/1) ... [2021-11-22 14:53:39,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (1/1) ... [2021-11-22 14:53:39,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:53:39,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:53:39,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:53:39,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:53:39,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (1/1) ... [2021-11-22 14:53:39,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:53:39,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:53:39,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:53:39,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb00633-46a0-4a82-8ae5-d70064784660/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:53:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:53:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:53:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:53:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:53:39,960 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:53:39,962 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:53:40,668 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:53:40,677 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:53:40,678 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 14:53:40,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:53:40 BoogieIcfgContainer [2021-11-22 14:53:40,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:53:40,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:53:40,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:53:40,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:53:40,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:53:38" (1/3) ... [2021-11-22 14:53:40,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4381f557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:53:40, skipping insertion in model container [2021-11-22 14:53:40,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:39" (2/3) ... [2021-11-22 14:53:40,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4381f557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:53:40, skipping insertion in model container [2021-11-22 14:53:40,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:53:40" (3/3) ... [2021-11-22 14:53:40,689 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-22 14:53:40,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:53:40,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:53:40,795 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:53:40,815 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:53:40,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 14:53:40,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 157 states have (on average 1.7515923566878981) internal successors, (275), 158 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:40,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-22 14:53:40,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:40,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:40,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:40,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:40,902 INFO L85 PathProgramCache]: Analyzing trace with hash 521817496, now seen corresponding path program 1 times [2021-11-22 14:53:40,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:40,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208478734] [2021-11-22 14:53:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:40,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:41,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:41,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208478734] [2021-11-22 14:53:41,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208478734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:41,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:41,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:53:41,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630500230] [2021-11-22 14:53:41,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:41,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:53:41,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:41,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:53:41,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:53:41,490 INFO L87 Difference]: Start difference. First operand has 159 states, 157 states have (on average 1.7515923566878981) internal successors, (275), 158 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:41,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:41,620 INFO L93 Difference]: Finished difference Result 341 states and 560 transitions. [2021-11-22 14:53:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:53:41,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-22 14:53:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:41,647 INFO L225 Difference]: With dead ends: 341 [2021-11-22 14:53:41,648 INFO L226 Difference]: Without dead ends: 240 [2021-11-22 14:53:41,652 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 [2021-11-22 14:53:41,657 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 186 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:53:41,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 541 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:41,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-22 14:53:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2021-11-22 14:53:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.4388185654008439) internal successors, (341), 237 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 341 transitions. [2021-11-22 14:53:41,738 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 341 transitions. Word has length 102 [2021-11-22 14:53:41,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:41,740 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 341 transitions. [2021-11-22 14:53:41,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 341 transitions. [2021-11-22 14:53:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-22 14:53:41,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:41,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:41,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:53:41,746 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1097817700, now seen corresponding path program 1 times [2021-11-22 14:53:41,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:41,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991367735] [2021-11-22 14:53:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:41,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:41,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:41,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991367735] [2021-11-22 14:53:41,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991367735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:41,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:41,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:53:41,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007806435] [2021-11-22 14:53:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:41,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:53:41,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:41,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:53:41,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:53:41,967 INFO L87 Difference]: Start difference. First operand 238 states and 341 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:42,061 INFO L93 Difference]: Finished difference Result 570 states and 869 transitions. [2021-11-22 14:53:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:53:42,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-22 14:53:42,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:42,066 INFO L225 Difference]: With dead ends: 570 [2021-11-22 14:53:42,069 INFO L226 Difference]: Without dead ends: 396 [2021-11-22 14:53:42,071 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 [2021-11-22 14:53:42,073 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 126 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 461 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 [2021-11-22 14:53:42,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 461 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-22 14:53:42,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2021-11-22 14:53:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.4987277353689568) internal successors, (589), 393 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 589 transitions. [2021-11-22 14:53:42,129 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 589 transitions. Word has length 103 [2021-11-22 14:53:42,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:42,129 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 589 transitions. [2021-11-22 14:53:42,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 589 transitions. [2021-11-22 14:53:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-22 14:53:42,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:42,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:42,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:53:42,135 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash 186284590, now seen corresponding path program 1 times [2021-11-22 14:53:42,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:42,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157740325] [2021-11-22 14:53:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:42,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:42,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:42,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157740325] [2021-11-22 14:53:42,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157740325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:42,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:42,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:53:42,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450040418] [2021-11-22 14:53:42,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:42,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:53:42,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:42,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:53:42,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:53:42,253 INFO L87 Difference]: Start difference. First operand 394 states and 589 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:42,323 INFO L93 Difference]: Finished difference Result 1022 states and 1587 transitions. [2021-11-22 14:53:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:53:42,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-22 14:53:42,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:42,335 INFO L225 Difference]: With dead ends: 1022 [2021-11-22 14:53:42,338 INFO L226 Difference]: Without dead ends: 692 [2021-11-22 14:53:42,340 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 [2021-11-22 14:53:42,345 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 121 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 457 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 [2021-11-22 14:53:42,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 457 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-11-22 14:53:42,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 690. [2021-11-22 14:53:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 1.5341074020319303) internal successors, (1057), 689 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1057 transitions. [2021-11-22 14:53:42,394 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1057 transitions. Word has length 104 [2021-11-22 14:53:42,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:42,395 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1057 transitions. [2021-11-22 14:53:42,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:42,395 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1057 transitions. [2021-11-22 14:53:42,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-22 14:53:42,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:42,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:42,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:53:42,399 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:42,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:42,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1107025040, now seen corresponding path program 1 times [2021-11-22 14:53:42,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:42,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647143125] [2021-11-22 14:53:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:42,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:42,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:42,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647143125] [2021-11-22 14:53:42,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647143125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:42,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:42,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:53:42,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770627353] [2021-11-22 14:53:42,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:42,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:53:42,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:42,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:53:42,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:53:42,530 INFO L87 Difference]: Start difference. First operand 690 states and 1057 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:42,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:42,606 INFO L93 Difference]: Finished difference Result 1878 states and 2939 transitions. [2021-11-22 14:53:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:53:42,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-22 14:53:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:42,616 INFO L225 Difference]: With dead ends: 1878 [2021-11-22 14:53:42,616 INFO L226 Difference]: Without dead ends: 1252 [2021-11-22 14:53:42,618 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 [2021-11-22 14:53:42,619 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 116 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 453 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 [2021-11-22 14:53:42,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 453 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-11-22 14:53:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1250. [2021-11-22 14:53:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.5508406725380304) internal successors, (1937), 1249 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:42,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1937 transitions. [2021-11-22 14:53:42,689 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1937 transitions. Word has length 105 [2021-11-22 14:53:42,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:42,690 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1937 transitions. [2021-11-22 14:53:42,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1937 transitions. [2021-11-22 14:53:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-22 14:53:42,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:42,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:42,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:53:42,693 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:42,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1750887068, now seen corresponding path program 1 times [2021-11-22 14:53:42,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:42,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238588708] [2021-11-22 14:53:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:42,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:42,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:42,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238588708] [2021-11-22 14:53:42,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238588708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:42,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:42,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:53:42,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333488219] [2021-11-22 14:53:42,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:42,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:53:42,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:42,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:53:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:53:42,783 INFO L87 Difference]: Start difference. First operand 1250 states and 1937 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:42,928 INFO L93 Difference]: Finished difference Result 3494 states and 5475 transitions. [2021-11-22 14:53:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:53:42,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-22 14:53:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:42,944 INFO L225 Difference]: With dead ends: 3494 [2021-11-22 14:53:42,944 INFO L226 Difference]: Without dead ends: 2308 [2021-11-22 14:53:42,947 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 [2021-11-22 14:53:42,949 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 111 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 449 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 [2021-11-22 14:53:42,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 449 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2021-11-22 14:53:43,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2306. [2021-11-22 14:53:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 1.5553145336225596) internal successors, (3585), 2305 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3585 transitions. [2021-11-22 14:53:43,098 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3585 transitions. Word has length 106 [2021-11-22 14:53:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:43,099 INFO L470 AbstractCegarLoop]: Abstraction has 2306 states and 3585 transitions. [2021-11-22 14:53:43,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3585 transitions. [2021-11-22 14:53:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-22 14:53:43,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:43,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:43,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:53:43,102 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:43,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:43,103 INFO L85 PathProgramCache]: Analyzing trace with hash -67978193, now seen corresponding path program 1 times [2021-11-22 14:53:43,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:43,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544299822] [2021-11-22 14:53:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:43,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:43,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:43,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544299822] [2021-11-22 14:53:43,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544299822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:43,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:43,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:53:43,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265981188] [2021-11-22 14:53:43,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:43,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:53:43,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:53:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:53:43,179 INFO L87 Difference]: Start difference. First operand 2306 states and 3585 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:43,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:43,456 INFO L93 Difference]: Finished difference Result 6534 states and 10211 transitions. [2021-11-22 14:53:43,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:53:43,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-22 14:53:43,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:43,483 INFO L225 Difference]: With dead ends: 6534 [2021-11-22 14:53:43,484 INFO L226 Difference]: Without dead ends: 4292 [2021-11-22 14:53:43,488 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 [2021-11-22 14:53:43,492 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 106 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 445 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 [2021-11-22 14:53:43,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 445 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2021-11-22 14:53:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4290. [2021-11-22 14:53:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 1.5521100489624622) internal successors, (6657), 4289 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 6657 transitions. [2021-11-22 14:53:43,837 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 6657 transitions. Word has length 107 [2021-11-22 14:53:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:43,838 INFO L470 AbstractCegarLoop]: Abstraction has 4290 states and 6657 transitions. [2021-11-22 14:53:43,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 6657 transitions. [2021-11-22 14:53:43,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-22 14:53:43,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:43,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:43,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:53:43,841 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:43,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash 827456551, now seen corresponding path program 1 times [2021-11-22 14:53:43,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:43,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055770337] [2021-11-22 14:53:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:43,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:43,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:43,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055770337] [2021-11-22 14:53:43,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055770337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:43,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:43,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:53:43,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345015648] [2021-11-22 14:53:43,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:43,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:53:43,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:43,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:53:43,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:53:43,945 INFO L87 Difference]: Start difference. First operand 4290 states and 6657 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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) [2021-11-22 14:53:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:44,450 INFO L93 Difference]: Finished difference Result 12230 states and 19011 transitions. [2021-11-22 14:53:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:53:44,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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 108 [2021-11-22 14:53:44,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:44,500 INFO L225 Difference]: With dead ends: 12230 [2021-11-22 14:53:44,501 INFO L226 Difference]: Without dead ends: 8004 [2021-11-22 14:53:44,508 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 [2021-11-22 14:53:44,512 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 101 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 441 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 [2021-11-22 14:53:44,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 441 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8004 states. [2021-11-22 14:53:45,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8004 to 8002. [2021-11-22 14:53:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8002 states, 8001 states have (on average 1.5439320084989376) internal successors, (12353), 8001 states have internal predecessors, (12353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8002 states to 8002 states and 12353 transitions. [2021-11-22 14:53:45,100 INFO L78 Accepts]: Start accepts. Automaton has 8002 states and 12353 transitions. Word has length 108 [2021-11-22 14:53:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:45,101 INFO L470 AbstractCegarLoop]: Abstraction has 8002 states and 12353 transitions. [2021-11-22 14:53:45,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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) [2021-11-22 14:53:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 8002 states and 12353 transitions. [2021-11-22 14:53:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 14:53:45,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:45,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:45,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 14:53:45,104 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:45,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:45,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1506711706, now seen corresponding path program 1 times [2021-11-22 14:53:45,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:45,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132205762] [2021-11-22 14:53:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:45,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:45,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:45,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132205762] [2021-11-22 14:53:45,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132205762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:45,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:45,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 14:53:45,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845175711] [2021-11-22 14:53:45,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:45,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 14:53:45,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:45,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 14:53:45,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:53:45,303 INFO L87 Difference]: Start difference. First operand 8002 states and 12353 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 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) [2021-11-22 14:53:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:51,659 INFO L93 Difference]: Finished difference Result 135010 states and 208977 transitions. [2021-11-22 14:53:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 14:53:51,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 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 109 [2021-11-22 14:53:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:52,169 INFO L225 Difference]: With dead ends: 135010 [2021-11-22 14:53:52,170 INFO L226 Difference]: Without dead ends: 127072 [2021-11-22 14:53:52,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-22 14:53:52,244 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 3201 mSDsluCounter, 7450 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3201 SdHoareTripleChecker+Valid, 7656 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:53:52,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3201 Valid, 7656 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 14:53:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127072 states. [2021-11-22 14:53:55,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127072 to 15938. [2021-11-22 14:53:55,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15938 states, 15937 states have (on average 1.5300872184225387) internal successors, (24385), 15937 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15938 states to 15938 states and 24385 transitions. [2021-11-22 14:53:55,245 INFO L78 Accepts]: Start accepts. Automaton has 15938 states and 24385 transitions. Word has length 109 [2021-11-22 14:53:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:55,246 INFO L470 AbstractCegarLoop]: Abstraction has 15938 states and 24385 transitions. [2021-11-22 14:53:55,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 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) [2021-11-22 14:53:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 15938 states and 24385 transitions. [2021-11-22 14:53:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-22 14:53:55,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:55,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:55,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 14:53:55,249 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:55,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:55,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1467787422, now seen corresponding path program 1 times [2021-11-22 14:53:55,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:55,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290735211] [2021-11-22 14:53:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:55,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:55,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:55,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290735211] [2021-11-22 14:53:55,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290735211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:55,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:55,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:53:55,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311075883] [2021-11-22 14:53:55,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:55,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:53:55,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:55,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:53:55,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:53:55,349 INFO L87 Difference]: Start difference. First operand 15938 states and 24385 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 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) [2021-11-22 14:53:57,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:57,791 INFO L93 Difference]: Finished difference Result 46278 states and 70595 transitions. [2021-11-22 14:53:57,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:53:57,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 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 111 [2021-11-22 14:53:57,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:57,856 INFO L225 Difference]: With dead ends: 46278 [2021-11-22 14:53:57,856 INFO L226 Difference]: Without dead ends: 30404 [2021-11-22 14:53:57,880 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 [2021-11-22 14:53:57,881 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 91 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:53:57,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 347 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:57,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30404 states. [2021-11-22 14:54:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30404 to 30146. [2021-11-22 14:54:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30146 states, 30145 states have (on average 1.505291093050257) internal successors, (45377), 30145 states have internal predecessors, (45377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30146 states to 30146 states and 45377 transitions. [2021-11-22 14:54:00,496 INFO L78 Accepts]: Start accepts. Automaton has 30146 states and 45377 transitions. Word has length 111 [2021-11-22 14:54:00,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:00,496 INFO L470 AbstractCegarLoop]: Abstraction has 30146 states and 45377 transitions. [2021-11-22 14:54:00,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 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) [2021-11-22 14:54:00,497 INFO L276 IsEmpty]: Start isEmpty. Operand 30146 states and 45377 transitions. [2021-11-22 14:54:00,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-22 14:54:00,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:00,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:00,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 14:54:00,500 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:54:00,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:00,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1446784767, now seen corresponding path program 1 times [2021-11-22 14:54:00,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:00,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544344843] [2021-11-22 14:54:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:00,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:00,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:00,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544344843] [2021-11-22 14:54:00,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544344843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:00,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:00,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 14:54:00,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381746558] [2021-11-22 14:54:00,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:00,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 14:54:00,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:00,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 14:54:00,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:54:00,904 INFO L87 Difference]: Start difference. First operand 30146 states and 45377 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 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) [2021-11-22 14:54:03,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:03,936 INFO L93 Difference]: Finished difference Result 60230 states and 90691 transitions. [2021-11-22 14:54:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 14:54:03,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 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 111 [2021-11-22 14:54:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:03,999 INFO L225 Difference]: With dead ends: 60230 [2021-11-22 14:54:03,999 INFO L226 Difference]: Without dead ends: 30148 [2021-11-22 14:54:04,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-22 14:54:04,038 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 1345 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:04,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 1204 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:54:04,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30148 states. [2021-11-22 14:54:06,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30148 to 30146. [2021-11-22 14:54:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30146 states, 30145 states have (on average 1.4967988057721016) internal successors, (45121), 30145 states have internal predecessors, (45121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:06,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30146 states to 30146 states and 45121 transitions. [2021-11-22 14:54:06,478 INFO L78 Accepts]: Start accepts. Automaton has 30146 states and 45121 transitions. Word has length 111 [2021-11-22 14:54:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:06,478 INFO L470 AbstractCegarLoop]: Abstraction has 30146 states and 45121 transitions. [2021-11-22 14:54:06,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 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) [2021-11-22 14:54:06,479 INFO L276 IsEmpty]: Start isEmpty. Operand 30146 states and 45121 transitions. [2021-11-22 14:54:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 14:54:06,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:06,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:06,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 14:54:06,481 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:54:06,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:06,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2102573667, now seen corresponding path program 1 times [2021-11-22 14:54:06,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:06,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083740220] [2021-11-22 14:54:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:06,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:06,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:06,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083740220] [2021-11-22 14:54:06,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083740220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:06,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:06,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:54:06,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729010582] [2021-11-22 14:54:06,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:06,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:54:06,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:06,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:54:06,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:06,544 INFO L87 Difference]: Start difference. First operand 30146 states and 45121 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:09,692 INFO L93 Difference]: Finished difference Result 59337 states and 89415 transitions. [2021-11-22 14:54:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:54:09,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-22 14:54:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:09,792 INFO L225 Difference]: With dead ends: 59337 [2021-11-22 14:54:09,792 INFO L226 Difference]: Without dead ends: 43462 [2021-11-22 14:54:09,815 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 [2021-11-22 14:54:09,816 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 133 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 473 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 [2021-11-22 14:54:09,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 473 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:54:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43462 states. [2021-11-22 14:54:13,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43462 to 43460. [2021-11-22 14:54:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43460 states, 43459 states have (on average 1.4948112013622035) internal successors, (64963), 43459 states have internal predecessors, (64963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43460 states to 43460 states and 64963 transitions. [2021-11-22 14:54:13,499 INFO L78 Accepts]: Start accepts. Automaton has 43460 states and 64963 transitions. Word has length 112 [2021-11-22 14:54:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:13,499 INFO L470 AbstractCegarLoop]: Abstraction has 43460 states and 64963 transitions. [2021-11-22 14:54:13,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:13,499 INFO L276 IsEmpty]: Start isEmpty. Operand 43460 states and 64963 transitions. [2021-11-22 14:54:13,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 14:54:13,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:13,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:13,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 14:54:13,501 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:54:13,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:13,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1902564040, now seen corresponding path program 1 times [2021-11-22 14:54:13,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:13,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718056332] [2021-11-22 14:54:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:13,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:13,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:13,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718056332] [2021-11-22 14:54:13,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718056332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:13,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:13,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:54:13,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82440077] [2021-11-22 14:54:13,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:13,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:54:13,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:54:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:54:13,580 INFO L87 Difference]: Start difference. First operand 43460 states and 64963 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:19,423 INFO L93 Difference]: Finished difference Result 116040 states and 173893 transitions. [2021-11-22 14:54:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:54:19,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-22 14:54:19,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:19,595 INFO L225 Difference]: With dead ends: 116040 [2021-11-22 14:54:19,595 INFO L226 Difference]: Without dead ends: 72646 [2021-11-22 14:54:19,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:54:19,641 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 839 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:19,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 213 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:54:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72646 states. [2021-11-22 14:54:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72646 to 72644. [2021-11-22 14:54:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72644 states, 72643 states have (on average 1.493371694450945) internal successors, (108483), 72643 states have internal predecessors, (108483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72644 states to 72644 states and 108483 transitions. [2021-11-22 14:54:26,028 INFO L78 Accepts]: Start accepts. Automaton has 72644 states and 108483 transitions. Word has length 112 [2021-11-22 14:54:26,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:26,028 INFO L470 AbstractCegarLoop]: Abstraction has 72644 states and 108483 transitions. [2021-11-22 14:54:26,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 72644 states and 108483 transitions. [2021-11-22 14:54:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 14:54:26,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:26,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:26,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 14:54:26,031 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:54:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:26,032 INFO L85 PathProgramCache]: Analyzing trace with hash -156137379, now seen corresponding path program 1 times [2021-11-22 14:54:26,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:26,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990142260] [2021-11-22 14:54:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:26,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:26,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:26,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990142260] [2021-11-22 14:54:26,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990142260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:26,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:26,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:54:26,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894301126] [2021-11-22 14:54:26,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:26,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:54:26,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:26,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:54:26,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:54:26,124 INFO L87 Difference]: Start difference. First operand 72644 states and 108483 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)