./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y --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 b8f220cadba131cee309fef082c623cdd627c534b9e708cc4a4f1dd2aa7336b9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:57:39,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:57:39,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:57:39,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:57:39,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:57:39,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:57:39,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:57:39,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:57:39,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:57:39,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:57:39,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:57:39,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:57:39,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:57:39,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:57:39,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:57:39,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:57:39,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:57:39,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:57:39,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:57:39,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:57:39,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:57:39,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:57:39,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:57:39,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:57:39,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:57:39,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:57:39,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:57:39,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:57:39,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:57:39,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:57:39,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:57:39,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:57:39,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:57:39,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:57:39,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:57:39,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:57:39,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:57:39,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:57:39,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:57:39,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:57:39,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:57:39,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:57:39,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:57:39,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:57:39,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:57:39,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:57:39,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:57:39,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:57:39,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:57:39,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:57:39,688 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:57:39,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:57:39,690 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:57:39,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:57:39,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:57:39,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:57:39,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:57:39,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:57:39,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:57:39,692 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:57:39,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:57:39,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:57:39,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:57:39,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:57:39,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:57:39,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:57:39,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:57:39,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:57:39,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:57:39,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:57:39,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:57:39,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:57:39,697 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:57:39,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:57:39,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:57:39,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:57:39,698 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_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8f220cadba131cee309fef082c623cdd627c534b9e708cc4a4f1dd2aa7336b9 [2021-11-13 17:57:40,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:57:40,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:57:40,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:57:40,049 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:57:40,051 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:57:40,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-13 17:57:40,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/data/ec28a9d7a/2d517d4768ae43c78d2dc3108bf15474/FLAGe37abe471 [2021-11-13 17:57:40,775 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:57:40,775 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-13 17:57:40,794 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/data/ec28a9d7a/2d517d4768ae43c78d2dc3108bf15474/FLAGe37abe471 [2021-11-13 17:57:41,059 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/data/ec28a9d7a/2d517d4768ae43c78d2dc3108bf15474 [2021-11-13 17:57:41,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:57:41,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:57:41,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:57:41,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:57:41,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:57:41,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1ecbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41, skipping insertion in model container [2021-11-13 17:57:41,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:57:41,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:57:41,388 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2021-11-13 17:57:41,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:57:41,436 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:57:41,484 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2021-11-13 17:57:41,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:57:41,534 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:57:41,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41 WrapperNode [2021-11-13 17:57:41,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:57:41,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:57:41,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:57:41,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:57:41,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:57:41,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:57:41,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:57:41,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:57:41,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:57:41,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:57:41,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:57:41,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:57:41,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (1/1) ... [2021-11-13 17:57:41,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:57:41,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:57:41,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:57:41,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:57:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:57:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:57:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:57:41,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:57:42,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:57:42,523 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:57:42,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:57:42 BoogieIcfgContainer [2021-11-13 17:57:42,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:57:42,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:57:42,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:57:42,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:57:42,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:57:41" (1/3) ... [2021-11-13 17:57:42,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0a0076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:57:42, skipping insertion in model container [2021-11-13 17:57:42,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:57:41" (2/3) ... [2021-11-13 17:57:42,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0a0076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:57:42, skipping insertion in model container [2021-11-13 17:57:42,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:57:42" (3/3) ... [2021-11-13 17:57:42,544 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-13 17:57:42,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:57:42,551 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:57:42,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:57:42,611 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 [2021-11-13 17:57:42,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:57:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 130 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:42,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-13 17:57:42,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:42,646 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] [2021-11-13 17:57:42,646 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1065941507, now seen corresponding path program 1 times [2021-11-13 17:57:42,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:42,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611263936] [2021-11-13 17:57:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:42,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:42,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:57:42,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611263936] [2021-11-13 17:57:42,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611263936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:42,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:42,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:57:43,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908766546] [2021-11-13 17:57:43,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:43,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:57:43,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:57:43,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:57:43,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:57:43,038 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 130 states have internal predecessors, (220), 0 states have call successors, (0), 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 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:43,142 INFO L93 Difference]: Finished difference Result 307 states and 498 transitions. [2021-11-13 17:57:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:57:43,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-13 17:57:43,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:43,161 INFO L225 Difference]: With dead ends: 307 [2021-11-13 17:57:43,166 INFO L226 Difference]: Without dead ends: 205 [2021-11-13 17:57:43,171 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 [2021-11-13 17:57:43,179 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 158 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.84ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:43,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 467 Invalid, 8 Unknown, 0 Unchecked, 7.84ms Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 26.80ms Time] [2021-11-13 17:57:43,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-13 17:57:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2021-11-13 17:57:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.5) internal successors, (303), 202 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 303 transitions. [2021-11-13 17:57:43,263 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 303 transitions. Word has length 60 [2021-11-13 17:57:43,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:43,264 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 303 transitions. [2021-11-13 17:57:43,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 303 transitions. [2021-11-13 17:57:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 17:57:43,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:43,270 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] [2021-11-13 17:57:43,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:57:43,271 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:43,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1987406881, now seen corresponding path program 1 times [2021-11-13 17:57:43,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:43,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039659703] [2021-11-13 17:57:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:43,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:43,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:57:43,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039659703] [2021-11-13 17:57:43,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039659703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:43,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:43,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:57:43,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336674245] [2021-11-13 17:57:43,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:43,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:57:43,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:57:43,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:57:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:57:43,458 INFO L87 Difference]: Start difference. First operand 203 states and 303 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:43,538 INFO L93 Difference]: Finished difference Result 507 states and 787 transitions. [2021-11-13 17:57:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:57:43,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-13 17:57:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:43,555 INFO L225 Difference]: With dead ends: 507 [2021-11-13 17:57:43,555 INFO L226 Difference]: Without dead ends: 339 [2021-11-13 17:57:43,556 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 [2021-11-13 17:57:43,558 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 127 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.47ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.65ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:43,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 402 Invalid, 7 Unknown, 0 Unchecked, 7.47ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 25.65ms Time] [2021-11-13 17:57:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-13 17:57:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2021-11-13 17:57:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.5357142857142858) internal successors, (516), 336 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 516 transitions. [2021-11-13 17:57:43,616 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 516 transitions. Word has length 61 [2021-11-13 17:57:43,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:43,617 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 516 transitions. [2021-11-13 17:57:43,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 516 transitions. [2021-11-13 17:57:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 17:57:43,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:43,620 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] [2021-11-13 17:57:43,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:57:43,620 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash 175155952, now seen corresponding path program 1 times [2021-11-13 17:57:43,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:43,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730123998] [2021-11-13 17:57:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:43,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:43,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:57:43,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730123998] [2021-11-13 17:57:43,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730123998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:43,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:43,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:57:43,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969869188] [2021-11-13 17:57:43,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:43,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:57:43,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:57:43,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:57:43,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:57:43,757 INFO L87 Difference]: Start difference. First operand 337 states and 516 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:43,845 INFO L93 Difference]: Finished difference Result 877 states and 1374 transitions. [2021-11-13 17:57:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:57:43,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-13 17:57:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:43,855 INFO L225 Difference]: With dead ends: 877 [2021-11-13 17:57:43,858 INFO L226 Difference]: Without dead ends: 575 [2021-11-13 17:57:43,860 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 [2021-11-13 17:57:43,866 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 122 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.47ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.62ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:43,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 387 Invalid, 7 Unknown, 0 Unchecked, 2.47ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 35.62ms Time] [2021-11-13 17:57:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-13 17:57:43,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2021-11-13 17:57:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 1.5524475524475525) internal successors, (888), 572 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 888 transitions. [2021-11-13 17:57:43,951 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 888 transitions. Word has length 62 [2021-11-13 17:57:43,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:43,952 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 888 transitions. [2021-11-13 17:57:43,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 888 transitions. [2021-11-13 17:57:43,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-13 17:57:43,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:43,965 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] [2021-11-13 17:57:43,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:57:43,966 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:43,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash -546721508, now seen corresponding path program 1 times [2021-11-13 17:57:43,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:43,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173416077] [2021-11-13 17:57:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:43,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:44,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:57:44,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173416077] [2021-11-13 17:57:44,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173416077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:44,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:44,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:57:44,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515705756] [2021-11-13 17:57:44,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:44,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:57:44,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:57:44,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:57:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:57:44,121 INFO L87 Difference]: Start difference. First operand 573 states and 888 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:44,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:44,195 INFO L93 Difference]: Finished difference Result 1521 states and 2386 transitions. [2021-11-13 17:57:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:57:44,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-13 17:57:44,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:44,205 INFO L225 Difference]: With dead ends: 1521 [2021-11-13 17:57:44,205 INFO L226 Difference]: Without dead ends: 983 [2021-11-13 17:57:44,208 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 [2021-11-13 17:57:44,221 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 117 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.31ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:44,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 372 Invalid, 7 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 16.31ms Time] [2021-11-13 17:57:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2021-11-13 17:57:44,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2021-11-13 17:57:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.5551020408163265) internal successors, (1524), 980 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1524 transitions. [2021-11-13 17:57:44,316 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1524 transitions. Word has length 63 [2021-11-13 17:57:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:44,317 INFO L470 AbstractCegarLoop]: Abstraction has 981 states and 1524 transitions. [2021-11-13 17:57:44,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1524 transitions. [2021-11-13 17:57:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 17:57:44,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:44,319 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] [2021-11-13 17:57:44,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:57:44,320 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash -8861705, now seen corresponding path program 1 times [2021-11-13 17:57:44,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:44,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640310995] [2021-11-13 17:57:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:44,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:44,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:57:44,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640310995] [2021-11-13 17:57:44,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640310995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:44,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:44,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:57:44,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663093818] [2021-11-13 17:57:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:44,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:57:44,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:57:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:57:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:57:44,477 INFO L87 Difference]: Start difference. First operand 981 states and 1524 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:45,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:45,006 INFO L93 Difference]: Finished difference Result 6657 states and 10458 transitions. [2021-11-13 17:57:45,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:57:45,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-13 17:57:45,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:45,047 INFO L225 Difference]: With dead ends: 6657 [2021-11-13 17:57:45,048 INFO L226 Difference]: Without dead ends: 5711 [2021-11-13 17:57:45,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:57:45,057 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1940 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.09ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.69ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:45,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1940 Valid, 1661 Invalid, 76 Unknown, 0 Unchecked, 12.09ms Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 76.69ms Time] [2021-11-13 17:57:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-11-13 17:57:45,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 1925. [2021-11-13 17:57:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 1.5488565488565489) internal successors, (2980), 1924 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:45,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2980 transitions. [2021-11-13 17:57:45,298 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2980 transitions. Word has length 64 [2021-11-13 17:57:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:45,299 INFO L470 AbstractCegarLoop]: Abstraction has 1925 states and 2980 transitions. [2021-11-13 17:57:45,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2980 transitions. [2021-11-13 17:57:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 17:57:45,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:45,303 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] [2021-11-13 17:57:45,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:57:45,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:45,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:45,308 INFO L85 PathProgramCache]: Analyzing trace with hash -294169095, now seen corresponding path program 1 times [2021-11-13 17:57:45,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:45,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937785703] [2021-11-13 17:57:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:45,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:45,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:57:45,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937785703] [2021-11-13 17:57:45,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937785703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:45,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:45,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:57:45,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146707347] [2021-11-13 17:57:45,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:45,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:57:45,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:57:45,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:57:45,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:57:45,562 INFO L87 Difference]: Start difference. First operand 1925 states and 2980 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:46,445 INFO L93 Difference]: Finished difference Result 10095 states and 15593 transitions. [2021-11-13 17:57:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:57:46,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-13 17:57:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:46,504 INFO L225 Difference]: With dead ends: 10095 [2021-11-13 17:57:46,504 INFO L226 Difference]: Without dead ends: 8205 [2021-11-13 17:57:46,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:57:46,513 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 627 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.63ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.50ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:46,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 1215 Invalid, 121 Unknown, 0 Unchecked, 6.63ms Time], IncrementalHoareTripleChecker [19 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 135.50ms Time] [2021-11-13 17:57:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8205 states. [2021-11-13 17:57:47,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8205 to 8197. [2021-11-13 17:57:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 8196 states have (on average 1.5387994143484627) internal successors, (12612), 8196 states have internal predecessors, (12612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 12612 transitions. [2021-11-13 17:57:47,310 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 12612 transitions. Word has length 65 [2021-11-13 17:57:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:47,311 INFO L470 AbstractCegarLoop]: Abstraction has 8197 states and 12612 transitions. [2021-11-13 17:57:47,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 12612 transitions. [2021-11-13 17:57:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 17:57:47,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:47,315 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] [2021-11-13 17:57:47,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:57:47,315 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:47,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:47,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1075132642, now seen corresponding path program 1 times [2021-11-13 17:57:47,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:47,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029752886] [2021-11-13 17:57:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:47,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:47,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:57:47,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029752886] [2021-11-13 17:57:47,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029752886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:47,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:47,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:57:47,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299112312] [2021-11-13 17:57:47,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:47,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:57:47,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:57:47,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:57:47,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:57:47,396 INFO L87 Difference]: Start difference. First operand 8197 states and 12612 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:48,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:48,574 INFO L93 Difference]: Finished difference Result 22761 states and 34886 transitions. [2021-11-13 17:57:48,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:57:48,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-13 17:57:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:48,650 INFO L225 Difference]: With dead ends: 22761 [2021-11-13 17:57:48,650 INFO L226 Difference]: Without dead ends: 14599 [2021-11-13 17:57:48,663 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 [2021-11-13 17:57:48,664 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 136 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.53ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:48,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 450 Invalid, 7 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 12.53ms Time] [2021-11-13 17:57:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2021-11-13 17:57:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 14597. [2021-11-13 17:57:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14597 states, 14596 states have (on average 1.5174020279528637) internal successors, (22148), 14596 states have internal predecessors, (22148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 22148 transitions. [2021-11-13 17:57:50,061 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 22148 transitions. Word has length 65 [2021-11-13 17:57:50,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:50,062 INFO L470 AbstractCegarLoop]: Abstraction has 14597 states and 22148 transitions. [2021-11-13 17:57:50,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 22148 transitions. [2021-11-13 17:57:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 17:57:50,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:50,064 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] [2021-11-13 17:57:50,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:57:50,064 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:50,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:50,065 INFO L85 PathProgramCache]: Analyzing trace with hash -938816400, now seen corresponding path program 1 times [2021-11-13 17:57:50,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:50,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124638822] [2021-11-13 17:57:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:50,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:50,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:57:50,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124638822] [2021-11-13 17:57:50,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124638822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:50,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:50,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:57:50,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944490424] [2021-11-13 17:57:50,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:50,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:57:50,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:57:50,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:57:50,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:57:50,148 INFO L87 Difference]: Start difference. First operand 14597 states and 22148 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:52,273 INFO L93 Difference]: Finished difference Result 43721 states and 66374 transitions. [2021-11-13 17:57:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:57:52,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-13 17:57:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:52,369 INFO L225 Difference]: With dead ends: 43721 [2021-11-13 17:57:52,369 INFO L226 Difference]: Without dead ends: 29159 [2021-11-13 17:57:52,392 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 [2021-11-13 17:57:52,393 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 775 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.14ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:52,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 212 Invalid, 141 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [8 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 182.14ms Time] [2021-11-13 17:57:52,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29159 states. [2021-11-13 17:57:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29159 to 29157. [2021-11-13 17:57:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29157 states, 29156 states have (on average 1.509260529565098) internal successors, (44004), 29156 states have internal predecessors, (44004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29157 states to 29157 states and 44004 transitions. [2021-11-13 17:57:54,675 INFO L78 Accepts]: Start accepts. Automaton has 29157 states and 44004 transitions. Word has length 67 [2021-11-13 17:57:54,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:54,675 INFO L470 AbstractCegarLoop]: Abstraction has 29157 states and 44004 transitions. [2021-11-13 17:57:54,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 29157 states and 44004 transitions. [2021-11-13 17:57:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 17:57:54,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:54,678 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] [2021-11-13 17:57:54,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:57:54,678 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:54,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash 831155307, now seen corresponding path program 1 times [2021-11-13 17:57:54,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:54,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068237362] [2021-11-13 17:57:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:54,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:57:54,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:57:54,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068237362] [2021-11-13 17:57:54,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068237362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:54,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:54,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:57:54,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018614840] [2021-11-13 17:57:54,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:54,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:57:54,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:57:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:57:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:57:54,778 INFO L87 Difference]: Start difference. First operand 29157 states and 44004 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:57:58,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:58,452 INFO L93 Difference]: Finished difference Result 59559 states and 89253 transitions. [2021-11-13 17:57:58,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:57:58,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-13 17:57:58,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:58,634 INFO L225 Difference]: With dead ends: 59559 [2021-11-13 17:57:58,635 INFO L226 Difference]: Without dead ends: 59557 [2021-11-13 17:57:58,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:57:58,654 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 284 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.05ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.08ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:58,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 891 Invalid, 28 Unknown, 0 Unchecked, 3.05ms Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 26.08ms Time] [2021-11-13 17:57:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59557 states. [2021-11-13 17:58:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59557 to 30437. [2021-11-13 17:58:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30437 states, 30436 states have (on average 1.4878433434091207) internal successors, (45284), 30436 states have internal predecessors, (45284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:58:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30437 states to 30437 states and 45284 transitions. [2021-11-13 17:58:01,311 INFO L78 Accepts]: Start accepts. Automaton has 30437 states and 45284 transitions. Word has length 67 [2021-11-13 17:58:01,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:58:01,311 INFO L470 AbstractCegarLoop]: Abstraction has 30437 states and 45284 transitions. [2021-11-13 17:58:01,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:58:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 30437 states and 45284 transitions. [2021-11-13 17:58:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 17:58:01,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:58:01,313 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] [2021-11-13 17:58:01,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:58:01,314 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:58:01,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:58:01,314 INFO L85 PathProgramCache]: Analyzing trace with hash 6583829, now seen corresponding path program 1 times [2021-11-13 17:58:01,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:58:01,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895413442] [2021-11-13 17:58:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:58:01,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:58:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:58:01,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:58:01,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895413442] [2021-11-13 17:58:01,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895413442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:58:01,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:58:01,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:58:01,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287972389] [2021-11-13 17:58:01,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:58:01,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:58:01,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:58:01,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:58:01,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:58:01,364 INFO L87 Difference]: Start difference. First operand 30437 states and 45284 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:58:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:58:04,470 INFO L93 Difference]: Finished difference Result 74187 states and 110320 transitions. [2021-11-13 17:58:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:58:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-13 17:58:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:58:04,555 INFO L225 Difference]: With dead ends: 74187 [2021-11-13 17:58:04,555 INFO L226 Difference]: Without dead ends: 43785 [2021-11-13 17:58:04,598 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 [2021-11-13 17:58:04,599 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 107 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.93ms IncrementalHoareTripleChecker+Time [2021-11-13 17:58:04,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 328 Invalid, 7 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 9.93ms Time] [2021-11-13 17:58:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43785 states. [2021-11-13 17:58:07,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43785 to 43783. [2021-11-13 17:58:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43783 states, 43782 states have (on average 1.4796491708921475) internal successors, (64782), 43782 states have internal predecessors, (64782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:58:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43783 states to 43783 states and 64782 transitions. [2021-11-13 17:58:08,053 INFO L78 Accepts]: Start accepts. Automaton has 43783 states and 64782 transitions. Word has length 68 [2021-11-13 17:58:08,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:58:08,053 INFO L470 AbstractCegarLoop]: Abstraction has 43783 states and 64782 transitions. [2021-11-13 17:58:08,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:58:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 43783 states and 64782 transitions. [2021-11-13 17:58:08,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 17:58:08,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:58:08,086 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:58:08,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:58:08,087 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:58:08,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:58:08,088 INFO L85 PathProgramCache]: Analyzing trace with hash -83102152, now seen corresponding path program 1 times [2021-11-13 17:58:08,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:58:08,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885148603] [2021-11-13 17:58:08,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:58:08,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:58:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:58:08,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:58:08,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885148603] [2021-11-13 17:58:08,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885148603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:58:08,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236180857] [2021-11-13 17:58:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:58:08,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:58:08,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:58:08,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:58:08,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:58:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:08,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 17:58:08,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:58:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:58:08,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:58:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:58:09,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236180857] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:58:09,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:58:09,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2021-11-13 17:58:09,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576933839] [2021-11-13 17:58:09,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:58:09,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:58:09,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:58:09,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:58:09,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:58:09,566 INFO L87 Difference]: Start difference. First operand 43783 states and 64782 transitions. Second operand has 9 states, 9 states have (on average 29.333333333333332) internal successors, (264), 9 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:58:19,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:58:19,513 INFO L93 Difference]: Finished difference Result 166313 states and 247375 transitions. [2021-11-13 17:58:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:58:19,513 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.333333333333332) internal successors, (264), 9 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-13 17:58:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:58:19,777 INFO L225 Difference]: With dead ends: 166313 [2021-11-13 17:58:19,777 INFO L226 Difference]: Without dead ends: 135911 [2021-11-13 17:58:19,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:58:19,831 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 938 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.66ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.98ms IncrementalHoareTripleChecker+Time [2021-11-13 17:58:19,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 1684 Invalid, 50 Unknown, 0 Unchecked, 7.66ms Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 44.98ms Time] [2021-11-13 17:58:19,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135911 states. [2021-11-13 17:58:29,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135911 to 130375. [2021-11-13 17:58:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130375 states, 130374 states have (on average 1.4723027597527114) internal successors, (191950), 130374 states have internal predecessors, (191950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:58:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130375 states to 130375 states and 191950 transitions. [2021-11-13 17:58:30,081 INFO L78 Accepts]: Start accepts. Automaton has 130375 states and 191950 transitions. Word has length 93 [2021-11-13 17:58:30,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:58:30,082 INFO L470 AbstractCegarLoop]: Abstraction has 130375 states and 191950 transitions. [2021-11-13 17:58:30,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.333333333333332) internal successors, (264), 9 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:58:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 130375 states and 191950 transitions. [2021-11-13 17:58:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 17:58:30,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:58:30,107 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:58:30,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:58:30,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e5e98f-4cb0-4ba4-a2ab-6cf5b141a58d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:58:30,335 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:58:30,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:58:30,335 INFO L85 PathProgramCache]: Analyzing trace with hash -528617513, now seen corresponding path program 1 times [2021-11-13 17:58:30,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:58:30,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789289267] [2021-11-13 17:58:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:58:30,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:58:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:58:30,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:58:30,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789289267] [2021-11-13 17:58:30,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789289267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:58:30,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:58:30,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:58:30,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354200737] [2021-11-13 17:58:30,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:58:30,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:58:30,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:58:30,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:58:30,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:58:30,408 INFO L87 Difference]: Start difference. First operand 130375 states and 191950 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)