./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF --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 cd7d66127097bee693df60b26ad836789e8e18ef088953d4d01590e6c82035a4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:18:05,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:18:05,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:18:05,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:18:05,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:18:05,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:18:05,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:18:05,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:18:05,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:18:05,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:18:05,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:18:05,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:18:05,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:18:05,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:18:05,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:18:05,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:18:05,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:18:05,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:18:05,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:18:05,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:18:05,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:18:05,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:18:05,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:18:05,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:18:05,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:18:05,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:18:05,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:18:05,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:18:05,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:18:05,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:18:05,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:18:05,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:18:05,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:18:05,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:18:05,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:18:05,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:18:05,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:18:05,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:18:05,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:18:05,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:18:05,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:18:05,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:18:05,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:18:05,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:18:05,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:18:05,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:18:05,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:18:05,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:18:05,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:18:05,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:18:05,610 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:18:05,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:18:05,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:18:05,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:18:05,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:18:05,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:18:05,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:18:05,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:18:05,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:18:05,618 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:18:05,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:18:05,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:18:05,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:18:05,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:18:05,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:18:05,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:18:05,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:18:05,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:18:05,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:18:05,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:18:05,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:18:05,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:18:05,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:18:05,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:18:05,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:18:05,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:18:05,625 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_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd7d66127097bee693df60b26ad836789e8e18ef088953d4d01590e6c82035a4 [2021-11-20 06:18:05,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:18:05,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:18:05,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:18:05,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:18:05,965 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:18:05,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-20 06:18:06,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/data/a716b43e8/ec1a4d3f900644c59272b33918dc8db2/FLAGe41f6399c [2021-11-20 06:18:06,747 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:18:06,748 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-20 06:18:06,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/data/a716b43e8/ec1a4d3f900644c59272b33918dc8db2/FLAGe41f6399c [2021-11-20 06:18:06,997 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/data/a716b43e8/ec1a4d3f900644c59272b33918dc8db2 [2021-11-20 06:18:07,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:18:07,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:18:07,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:18:07,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:18:07,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:18:07,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:18:06" (1/1) ... [2021-11-20 06:18:07,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793aefa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07, skipping insertion in model container [2021-11-20 06:18:07,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:18:06" (1/1) ... [2021-11-20 06:18:07,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:18:07,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:18:07,446 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7669,7682] [2021-11-20 06:18:07,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:18:07,508 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:18:07,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7669,7682] [2021-11-20 06:18:07,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:18:07,644 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:18:07,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07 WrapperNode [2021-11-20 06:18:07,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:18:07,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:18:07,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:18:07,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:18:07,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (1/1) ... [2021-11-20 06:18:07,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (1/1) ... [2021-11-20 06:18:07,729 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 573 [2021-11-20 06:18:07,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:18:07,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:18:07,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:18:07,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:18:07,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (1/1) ... [2021-11-20 06:18:07,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (1/1) ... [2021-11-20 06:18:07,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (1/1) ... [2021-11-20 06:18:07,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (1/1) ... [2021-11-20 06:18:07,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (1/1) ... [2021-11-20 06:18:07,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (1/1) ... [2021-11-20 06:18:07,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (1/1) ... [2021-11-20 06:18:07,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:18:07,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:18:07,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:18:07,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:18:07,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (1/1) ... [2021-11-20 06:18:07,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:18:07,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:18:07,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:18:07,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e95db0c2-4fce-4d38-b66f-0c0a3f80f223/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:18:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:18:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:18:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:18:07,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:18:08,042 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:18:08,044 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:18:08,742 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:18:08,752 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:18:08,752 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:18:08,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:18:08 BoogieIcfgContainer [2021-11-20 06:18:08,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:18:08,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:18:08,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:18:08,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:18:08,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:18:06" (1/3) ... [2021-11-20 06:18:08,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f77dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:18:08, skipping insertion in model container [2021-11-20 06:18:08,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:07" (2/3) ... [2021-11-20 06:18:08,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f77dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:18:08, skipping insertion in model container [2021-11-20 06:18:08,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:18:08" (3/3) ... [2021-11-20 06:18:08,764 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-20 06:18:08,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:18:08,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:18:08,824 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:18:08,832 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 [2021-11-20 06:18:08,832 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:18:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:18:08,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:08,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:08,866 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:08,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:08,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2006546999, now seen corresponding path program 1 times [2021-11-20 06:18:08,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:08,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952654209] [2021-11-20 06:18:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:08,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:09,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:09,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952654209] [2021-11-20 06:18:09,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952654209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:09,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:09,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:18:09,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096647086] [2021-11-20 06:18:09,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:09,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:09,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:09,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:09,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:09,391 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:09,478 INFO L93 Difference]: Finished difference Result 300 states and 490 transitions. [2021-11-20 06:18:09,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:09,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-20 06:18:09,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:09,495 INFO L225 Difference]: With dead ends: 300 [2021-11-20 06:18:09,496 INFO L226 Difference]: Without dead ends: 209 [2021-11-20 06:18:09,499 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 [2021-11-20 06:18:09,512 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 159 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:09,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 471 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:09,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-20 06:18:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2021-11-20 06:18:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4466019417475728) internal successors, (298), 206 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 298 transitions. [2021-11-20 06:18:09,574 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 298 transitions. Word has length 87 [2021-11-20 06:18:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:09,575 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 298 transitions. [2021-11-20 06:18:09,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 298 transitions. [2021-11-20 06:18:09,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-20 06:18:09,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:09,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:09,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:18:09,580 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:09,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:09,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1559740613, now seen corresponding path program 1 times [2021-11-20 06:18:09,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:09,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247446704] [2021-11-20 06:18:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:09,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:09,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:09,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247446704] [2021-11-20 06:18:09,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247446704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:09,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:09,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:18:09,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860668454] [2021-11-20 06:18:09,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:09,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:09,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:09,861 INFO L87 Difference]: Start difference. First operand 207 states and 298 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:09,941 INFO L93 Difference]: Finished difference Result 499 states and 762 transitions. [2021-11-20 06:18:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:09,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-20 06:18:09,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:09,947 INFO L225 Difference]: With dead ends: 499 [2021-11-20 06:18:09,947 INFO L226 Difference]: Without dead ends: 345 [2021-11-20 06:18:09,949 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 [2021-11-20 06:18:09,951 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 110 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:09,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 402 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-20 06:18:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2021-11-20 06:18:10,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 342 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 514 transitions. [2021-11-20 06:18:10,037 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 514 transitions. Word has length 88 [2021-11-20 06:18:10,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:10,038 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 514 transitions. [2021-11-20 06:18:10,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:10,039 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 514 transitions. [2021-11-20 06:18:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 06:18:10,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:10,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:10,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:18:10,044 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:10,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1480148747, now seen corresponding path program 1 times [2021-11-20 06:18:10,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:10,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580900805] [2021-11-20 06:18:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:10,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:10,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:10,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580900805] [2021-11-20 06:18:10,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580900805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:10,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:10,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:18:10,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85360534] [2021-11-20 06:18:10,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:10,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:10,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:10,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:10,220 INFO L87 Difference]: Start difference. First operand 343 states and 514 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:10,326 INFO L93 Difference]: Finished difference Result 891 states and 1384 transitions. [2021-11-20 06:18:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:10,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-20 06:18:10,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:10,333 INFO L225 Difference]: With dead ends: 891 [2021-11-20 06:18:10,333 INFO L226 Difference]: Without dead ends: 601 [2021-11-20 06:18:10,336 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 [2021-11-20 06:18:10,338 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 105 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:10,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 398 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-20 06:18:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2021-11-20 06:18:10,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.5351170568561874) internal successors, (918), 598 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 918 transitions. [2021-11-20 06:18:10,395 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 918 transitions. Word has length 89 [2021-11-20 06:18:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:10,396 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 918 transitions. [2021-11-20 06:18:10,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 918 transitions. [2021-11-20 06:18:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-20 06:18:10,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:10,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:10,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:18:10,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:10,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:10,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1142089047, now seen corresponding path program 1 times [2021-11-20 06:18:10,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:10,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947208021] [2021-11-20 06:18:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:10,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:10,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:10,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:10,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947208021] [2021-11-20 06:18:10,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947208021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:10,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:10,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:18:10,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954432047] [2021-11-20 06:18:10,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:10,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:10,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:10,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:10,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:10,501 INFO L87 Difference]: Start difference. First operand 599 states and 918 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:10,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:10,591 INFO L93 Difference]: Finished difference Result 1627 states and 2544 transitions. [2021-11-20 06:18:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:10,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-20 06:18:10,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:10,601 INFO L225 Difference]: With dead ends: 1627 [2021-11-20 06:18:10,601 INFO L226 Difference]: Without dead ends: 1081 [2021-11-20 06:18:10,603 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 [2021-11-20 06:18:10,605 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 100 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:10,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 394 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2021-11-20 06:18:10,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1079. [2021-11-20 06:18:10,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.549165120593692) internal successors, (1670), 1078 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1670 transitions. [2021-11-20 06:18:10,691 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1670 transitions. Word has length 90 [2021-11-20 06:18:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:10,693 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 1670 transitions. [2021-11-20 06:18:10,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1670 transitions. [2021-11-20 06:18:10,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 06:18:10,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:10,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:10,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:18:10,701 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:10,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:10,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1309607801, now seen corresponding path program 1 times [2021-11-20 06:18:10,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:10,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176939801] [2021-11-20 06:18:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:10,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:10,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:10,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176939801] [2021-11-20 06:18:10,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176939801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:10,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:10,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:18:10,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776618118] [2021-11-20 06:18:10,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:10,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:10,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:10,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:10,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:10,853 INFO L87 Difference]: Start difference. First operand 1079 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:11,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:11,007 INFO L93 Difference]: Finished difference Result 3003 states and 4696 transitions. [2021-11-20 06:18:11,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:11,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-20 06:18:11,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:11,024 INFO L225 Difference]: With dead ends: 3003 [2021-11-20 06:18:11,025 INFO L226 Difference]: Without dead ends: 1977 [2021-11-20 06:18:11,027 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 [2021-11-20 06:18:11,039 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 95 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:11,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 390 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:11,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2021-11-20 06:18:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1975. [2021-11-20 06:18:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 1.5511651469098278) internal successors, (3062), 1974 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3062 transitions. [2021-11-20 06:18:11,210 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3062 transitions. Word has length 91 [2021-11-20 06:18:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:11,211 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 3062 transitions. [2021-11-20 06:18:11,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:11,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3062 transitions. [2021-11-20 06:18:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-20 06:18:11,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:11,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:11,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:18:11,226 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash 582949359, now seen corresponding path program 1 times [2021-11-20 06:18:11,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:11,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121304472] [2021-11-20 06:18:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:11,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:11,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:11,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121304472] [2021-11-20 06:18:11,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121304472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:11,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:11,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:18:11,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312280604] [2021-11-20 06:18:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:11,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:11,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:11,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:11,352 INFO L87 Difference]: Start difference. First operand 1975 states and 3062 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:11,603 INFO L93 Difference]: Finished difference Result 5563 states and 8664 transitions. [2021-11-20 06:18:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:11,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-20 06:18:11,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:11,630 INFO L225 Difference]: With dead ends: 5563 [2021-11-20 06:18:11,631 INFO L226 Difference]: Without dead ends: 3641 [2021-11-20 06:18:11,635 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 [2021-11-20 06:18:11,638 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 90 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:11,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 386 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:11,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2021-11-20 06:18:11,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2021-11-20 06:18:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3638 states have (on average 1.5453545904343045) internal successors, (5622), 3638 states have internal predecessors, (5622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5622 transitions. [2021-11-20 06:18:11,944 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5622 transitions. Word has length 92 [2021-11-20 06:18:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:11,945 INFO L470 AbstractCegarLoop]: Abstraction has 3639 states and 5622 transitions. [2021-11-20 06:18:11,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5622 transitions. [2021-11-20 06:18:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-20 06:18:11,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:11,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:11,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:18:11,948 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:11,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:11,949 INFO L85 PathProgramCache]: Analyzing trace with hash -496500112, now seen corresponding path program 1 times [2021-11-20 06:18:11,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:11,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647547291] [2021-11-20 06:18:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:11,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:12,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:12,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647547291] [2021-11-20 06:18:12,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647547291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:12,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:12,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:18:12,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939806742] [2021-11-20 06:18:12,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:12,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:18:12,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:12,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:18:12,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:18:12,145 INFO L87 Difference]: Start difference. First operand 3639 states and 5622 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:15,890 INFO L93 Difference]: Finished difference Result 53843 states and 83588 transitions. [2021-11-20 06:18:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:18:15,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-20 06:18:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:16,220 INFO L225 Difference]: With dead ends: 53843 [2021-11-20 06:18:16,220 INFO L226 Difference]: Without dead ends: 50257 [2021-11-20 06:18:16,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:18:16,239 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 2518 mSDsluCounter, 4862 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2518 SdHoareTripleChecker+Valid, 5041 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:16,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2518 Valid, 5041 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:18:16,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50257 states. [2021-11-20 06:18:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50257 to 7223. [2021-11-20 06:18:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7223 states, 7222 states have (on average 1.5317086679590142) internal successors, (11062), 7222 states have internal predecessors, (11062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:17,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7223 states to 7223 states and 11062 transitions. [2021-11-20 06:18:17,638 INFO L78 Accepts]: Start accepts. Automaton has 7223 states and 11062 transitions. Word has length 93 [2021-11-20 06:18:17,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:17,639 INFO L470 AbstractCegarLoop]: Abstraction has 7223 states and 11062 transitions. [2021-11-20 06:18:17,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:17,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7223 states and 11062 transitions. [2021-11-20 06:18:17,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-20 06:18:17,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:17,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:17,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:18:17,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1317055956, now seen corresponding path program 1 times [2021-11-20 06:18:17,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:17,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489424100] [2021-11-20 06:18:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:17,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:17,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:17,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489424100] [2021-11-20 06:18:17,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489424100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:17,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:17,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:18:17,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744564428] [2021-11-20 06:18:17,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:17,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:17,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:17,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:17,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:17,724 INFO L87 Difference]: Start difference. First operand 7223 states and 11062 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:19,255 INFO L93 Difference]: Finished difference Result 20859 states and 31864 transitions. [2021-11-20 06:18:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:19,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-20 06:18:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:19,291 INFO L225 Difference]: With dead ends: 20859 [2021-11-20 06:18:19,291 INFO L226 Difference]: Without dead ends: 13689 [2021-11-20 06:18:19,304 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 [2021-11-20 06:18:19,305 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 80 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:19,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 304 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13689 states. [2021-11-20 06:18:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13689 to 13559. [2021-11-20 06:18:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13559 states, 13558 states have (on average 1.5050892462015046) internal successors, (20406), 13558 states have internal predecessors, (20406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13559 states to 13559 states and 20406 transitions. [2021-11-20 06:18:20,738 INFO L78 Accepts]: Start accepts. Automaton has 13559 states and 20406 transitions. Word has length 95 [2021-11-20 06:18:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:20,738 INFO L470 AbstractCegarLoop]: Abstraction has 13559 states and 20406 transitions. [2021-11-20 06:18:20,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13559 states and 20406 transitions. [2021-11-20 06:18:20,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-20 06:18:20,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:20,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:20,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:18:20,742 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:20,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:20,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1296053301, now seen corresponding path program 1 times [2021-11-20 06:18:20,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:20,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000448497] [2021-11-20 06:18:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:20,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:21,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:21,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000448497] [2021-11-20 06:18:21,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000448497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:21,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:21,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:18:21,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803894077] [2021-11-20 06:18:21,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:21,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:18:21,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:18:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:18:21,117 INFO L87 Difference]: Start difference. First operand 13559 states and 20406 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:22,814 INFO L93 Difference]: Finished difference Result 27067 states and 40760 transitions. [2021-11-20 06:18:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:18:22,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-20 06:18:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:22,854 INFO L225 Difference]: With dead ends: 27067 [2021-11-20 06:18:22,854 INFO L226 Difference]: Without dead ends: 13561 [2021-11-20 06:18:22,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:18:22,879 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 848 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:22,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 989 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:18:22,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13561 states. [2021-11-20 06:18:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13561 to 13559. [2021-11-20 06:18:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13559 states, 13558 states have (on average 1.495648325711757) internal successors, (20278), 13558 states have internal predecessors, (20278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13559 states to 13559 states and 20278 transitions. [2021-11-20 06:18:24,080 INFO L78 Accepts]: Start accepts. Automaton has 13559 states and 20278 transitions. Word has length 95 [2021-11-20 06:18:24,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:24,080 INFO L470 AbstractCegarLoop]: Abstraction has 13559 states and 20278 transitions. [2021-11-20 06:18:24,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 13559 states and 20278 transitions. [2021-11-20 06:18:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 06:18:24,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:24,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:24,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:18:24,083 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash 232587604, now seen corresponding path program 1 times [2021-11-20 06:18:24,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:24,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773481750] [2021-11-20 06:18:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:24,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:24,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:24,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773481750] [2021-11-20 06:18:24,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773481750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:24,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:24,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:18:24,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91693302] [2021-11-20 06:18:24,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:24,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:24,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:24,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:24,150 INFO L87 Difference]: Start difference. First operand 13559 states and 20278 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:25,580 INFO L93 Difference]: Finished difference Result 26622 states and 40124 transitions. [2021-11-20 06:18:25,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:25,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-20 06:18:25,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:25,635 INFO L225 Difference]: With dead ends: 26622 [2021-11-20 06:18:25,635 INFO L226 Difference]: Without dead ends: 19451 [2021-11-20 06:18:25,653 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 [2021-11-20 06:18:25,654 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 117 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:25,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 414 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19451 states. [2021-11-20 06:18:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19451 to 19449. [2021-11-20 06:18:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19449 states, 19448 states have (on average 1.4936240230357878) internal successors, (29048), 19448 states have internal predecessors, (29048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19449 states to 19449 states and 29048 transitions. [2021-11-20 06:18:27,243 INFO L78 Accepts]: Start accepts. Automaton has 19449 states and 29048 transitions. Word has length 96 [2021-11-20 06:18:27,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:27,244 INFO L470 AbstractCegarLoop]: Abstraction has 19449 states and 29048 transitions. [2021-11-20 06:18:27,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:27,244 INFO L276 IsEmpty]: Start isEmpty. Operand 19449 states and 29048 transitions. [2021-11-20 06:18:27,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 06:18:27,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:27,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:27,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:18:27,246 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:27,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:27,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1524855936, now seen corresponding path program 1 times [2021-11-20 06:18:27,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:27,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330145307] [2021-11-20 06:18:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:27,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:27,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:27,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330145307] [2021-11-20 06:18:27,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330145307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:27,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:27,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:18:27,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633818895] [2021-11-20 06:18:27,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:27,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:18:27,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:27,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:18:27,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:18:27,331 INFO L87 Difference]: Start difference. First operand 19449 states and 29048 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:29,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:29,633 INFO L93 Difference]: Finished difference Result 51901 states and 77754 transitions. [2021-11-20 06:18:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:18:29,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-20 06:18:29,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:29,710 INFO L225 Difference]: With dead ends: 51901 [2021-11-20 06:18:29,710 INFO L226 Difference]: Without dead ends: 32507 [2021-11-20 06:18:29,746 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 [2021-11-20 06:18:29,747 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 737 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:29,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 187 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:18:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32507 states. [2021-11-20 06:18:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32507 to 32505. [2021-11-20 06:18:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32505 states, 32504 states have (on average 1.4922471080482402) internal successors, (48504), 32504 states have internal predecessors, (48504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:33,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32505 states to 32505 states and 48504 transitions. [2021-11-20 06:18:33,028 INFO L78 Accepts]: Start accepts. Automaton has 32505 states and 48504 transitions. Word has length 96 [2021-11-20 06:18:33,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:33,029 INFO L470 AbstractCegarLoop]: Abstraction has 32505 states and 48504 transitions. [2021-11-20 06:18:33,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 32505 states and 48504 transitions. [2021-11-20 06:18:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 06:18:33,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:33,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:33,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:18:33,031 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1886974661, now seen corresponding path program 1 times [2021-11-20 06:18:33,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:33,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287474586] [2021-11-20 06:18:33,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:33,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:33,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:33,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287474586] [2021-11-20 06:18:33,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287474586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:33,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:33,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:18:33,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833347855] [2021-11-20 06:18:33,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:33,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:18:33,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:18:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:18:33,276 INFO L87 Difference]: Start difference. First operand 32505 states and 48504 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:36,014 INFO L93 Difference]: Finished difference Result 64955 states and 96953 transitions. [2021-11-20 06:18:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:18:36,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-20 06:18:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:36,073 INFO L225 Difference]: With dead ends: 64955 [2021-11-20 06:18:36,073 INFO L226 Difference]: Without dead ends: 32505 [2021-11-20 06:18:36,102 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 [2021-11-20 06:18:36,103 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 441 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:36,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 142 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:18:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32505 states. [2021-11-20 06:18:38,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32505 to 32505. [2021-11-20 06:18:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32505 states, 32504 states have (on average 1.4824021658872755) internal successors, (48184), 32504 states have internal predecessors, (48184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32505 states to 32505 states and 48184 transitions. [2021-11-20 06:18:39,176 INFO L78 Accepts]: Start accepts. Automaton has 32505 states and 48184 transitions. Word has length 96 [2021-11-20 06:18:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:39,176 INFO L470 AbstractCegarLoop]: Abstraction has 32505 states and 48184 transitions. [2021-11-20 06:18:39,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 32505 states and 48184 transitions. [2021-11-20 06:18:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 06:18:39,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:39,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:39,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:18:39,179 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:39,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:39,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1645128928, now seen corresponding path program 1 times [2021-11-20 06:18:39,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:39,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282484452] [2021-11-20 06:18:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:39,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:39,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:39,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282484452] [2021-11-20 06:18:39,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282484452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:39,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:39,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:18:39,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807027948] [2021-11-20 06:18:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:39,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:18:39,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:18:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:18:39,278 INFO L87 Difference]: Start difference. First operand 32505 states and 48184 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:42,394 INFO L93 Difference]: Finished difference Result 64955 states and 96313 transitions. [2021-11-20 06:18:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:18:42,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-20 06:18:42,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:42,439 INFO L225 Difference]: With dead ends: 64955 [2021-11-20 06:18:42,439 INFO L226 Difference]: Without dead ends: 32505 [2021-11-20 06:18:42,463 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 [2021-11-20 06:18:42,464 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 399 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:42,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 166 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:18:42,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32505 states. [2021-11-20 06:18:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32505 to 32505. [2021-11-20 06:18:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32505 states, 32504 states have (on average 1.4725572237263107) internal successors, (47864), 32504 states have internal predecessors, (47864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32505 states to 32505 states and 47864 transitions. [2021-11-20 06:18:45,581 INFO L78 Accepts]: Start accepts. Automaton has 32505 states and 47864 transitions. Word has length 96 [2021-11-20 06:18:45,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:45,581 INFO L470 AbstractCegarLoop]: Abstraction has 32505 states and 47864 transitions. [2021-11-20 06:18:45,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 32505 states and 47864 transitions. [2021-11-20 06:18:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 06:18:45,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:45,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:45,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:18:45,584 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:45,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1115838427, now seen corresponding path program 1 times [2021-11-20 06:18:45,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:45,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172205782] [2021-11-20 06:18:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:45,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:45,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:45,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172205782] [2021-11-20 06:18:45,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172205782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:45,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:45,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:18:45,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413629662] [2021-11-20 06:18:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:45,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:18:45,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:45,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:18:45,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:18:45,661 INFO L87 Difference]: Start difference. First operand 32505 states and 47864 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:48,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:48,798 INFO L93 Difference]: Finished difference Result 64955 states and 95673 transitions. [2021-11-20 06:18:48,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:18:48,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-20 06:18:48,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:48,846 INFO L225 Difference]: With dead ends: 64955 [2021-11-20 06:18:48,846 INFO L226 Difference]: Without dead ends: 32505 [2021-11-20 06:18:48,873 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 [2021-11-20 06:18:48,874 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 461 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:48,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 126 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:18:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32505 states. [2021-11-20 06:18:51,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32505 to 32505. [2021-11-20 06:18:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32505 states, 32504 states have (on average 1.4627122815653457) internal successors, (47544), 32504 states have internal predecessors, (47544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32505 states to 32505 states and 47544 transitions. [2021-11-20 06:18:52,053 INFO L78 Accepts]: Start accepts. Automaton has 32505 states and 47544 transitions. Word has length 96 [2021-11-20 06:18:52,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:52,053 INFO L470 AbstractCegarLoop]: Abstraction has 32505 states and 47544 transitions. [2021-11-20 06:18:52,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:52,054 INFO L276 IsEmpty]: Start isEmpty. Operand 32505 states and 47544 transitions. [2021-11-20 06:18:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 06:18:52,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:52,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:52,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:18:52,056 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash -625578688, now seen corresponding path program 1 times [2021-11-20 06:18:52,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:52,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054061080] [2021-11-20 06:18:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:52,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:52,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:52,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054061080] [2021-11-20 06:18:52,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054061080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:52,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:52,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:18:52,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862961833] [2021-11-20 06:18:52,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:52,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:18:52,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:18:52,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:18:52,297 INFO L87 Difference]: Start difference. First operand 32505 states and 47544 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)