./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS --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 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 02:29:53,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:29:53,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:29:53,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:29:53,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:29:53,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:29:53,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:29:53,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:29:53,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:29:53,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:29:53,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:29:53,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:29:53,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:29:53,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:29:53,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:29:53,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:29:53,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:29:53,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:29:53,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:29:53,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:29:53,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:29:53,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:29:53,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:29:53,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:29:53,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:29:53,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:29:53,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:29:53,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:29:53,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:29:53,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:29:53,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:29:53,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:29:53,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:29:53,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:29:53,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:29:53,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:29:53,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:29:53,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:29:53,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:29:53,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:29:53,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:29:53,582 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:29:53,632 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:29:53,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:29:53,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:29:53,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:29:53,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:29:53,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:29:53,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:29:53,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:29:53,638 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:29:53,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:29:53,640 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:29:53,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:29:53,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:29:53,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:29:53,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:29:53,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:29:53,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:29:53,642 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:29:53,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:29:53,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:29:53,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:29:53,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:29:53,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:29:53,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:29:53,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:29:53,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:29:53,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:29:53,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:29:53,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:29:53,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:29:53,653 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:29:53,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:29:53,653 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:29:53,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:29:53,654 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c [2022-11-23 02:29:53,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:29:54,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:29:54,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:29:54,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:29:54,013 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:29:54,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2022-11-23 02:29:58,014 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:29:58,620 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:29:58,627 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2022-11-23 02:29:58,659 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/data/62431bfc4/e35faf22648041f0a263ab21946b44b1/FLAG945131685 [2022-11-23 02:29:58,676 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/data/62431bfc4/e35faf22648041f0a263ab21946b44b1 [2022-11-23 02:29:58,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:29:58,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:29:58,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:29:58,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:29:58,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:29:58,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:58" (1/1) ... [2022-11-23 02:29:58,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f86dffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:58, skipping insertion in model container [2022-11-23 02:29:58,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:58" (1/1) ... [2022-11-23 02:29:58,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:29:58,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:29:59,445 WARN L237 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_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[33021,33034] [2022-11-23 02:29:59,877 WARN L237 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_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[84583,84596] [2022-11-23 02:29:59,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:29:59,920 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:30:00,001 WARN L237 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_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[33021,33034] [2022-11-23 02:30:00,147 WARN L237 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_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[84583,84596] [2022-11-23 02:30:00,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:30:00,203 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:30:00,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00 WrapperNode [2022-11-23 02:30:00,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:30:00,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:30:00,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:30:00,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:30:00,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,430 INFO L138 Inliner]: procedures = 177, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3015 [2022-11-23 02:30:00,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:30:00,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:30:00,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:30:00,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:30:00,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,586 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:30:00,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:30:00,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:30:00,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:30:00,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (1/1) ... [2022-11-23 02:30:00,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:30:00,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:30:00,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:30:00,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:30:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:30:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 02:30:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 02:30:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:30:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 02:30:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 02:30:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:30:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:30:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 02:30:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:30:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 02:30:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 02:30:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:30:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:30:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:30:00,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:30:01,060 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:30:01,063 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:30:05,059 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:30:05,083 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:30:05,084 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-23 02:30:05,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:05 BoogieIcfgContainer [2022-11-23 02:30:05,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:30:05,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:30:05,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:30:05,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:30:05,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:29:58" (1/3) ... [2022-11-23 02:30:05,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d61818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:05, skipping insertion in model container [2022-11-23 02:30:05,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:00" (2/3) ... [2022-11-23 02:30:05,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d61818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:05, skipping insertion in model container [2022-11-23 02:30:05,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:05" (3/3) ... [2022-11-23 02:30:05,101 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test9-2.i [2022-11-23 02:30:05,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:30:05,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 02:30:05,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:30:05,237 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@502638d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:30:05,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 02:30:05,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 1194 states, 686 states have (on average 1.91399416909621) internal successors, (1313), 1188 states have internal predecessors, (1313), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-23 02:30:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 02:30:05,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:05,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:30:05,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:05,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1311560150, now seen corresponding path program 1 times [2022-11-23 02:30:05,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:05,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661430351] [2022-11-23 02:30:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:30:05,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:05,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661430351] [2022-11-23 02:30:05,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661430351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:05,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:05,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:30:05,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272976055] [2022-11-23 02:30:05,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:05,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:30:05,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:30:05,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:30:05,646 INFO L87 Difference]: Start difference. First operand has 1194 states, 686 states have (on average 1.91399416909621) internal successors, (1313), 1188 states have internal predecessors, (1313), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:30:05,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:30:05,941 INFO L93 Difference]: Finished difference Result 2386 states and 5136 transitions. [2022-11-23 02:30:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:30:05,956 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-23 02:30:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:30:06,020 INFO L225 Difference]: With dead ends: 2386 [2022-11-23 02:30:06,023 INFO L226 Difference]: Without dead ends: 1161 [2022-11-23 02:30:06,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:30:06,057 INFO L413 NwaCegarLoop]: 2250 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:30:06,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:30:06,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-11-23 02:30:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2022-11-23 02:30:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 654 states have (on average 1.834862385321101) internal successors, (1200), 1155 states have internal predecessors, (1200), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-23 02:30:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 2206 transitions. [2022-11-23 02:30:06,667 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 2206 transitions. Word has length 9 [2022-11-23 02:30:06,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:30:06,667 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 2206 transitions. [2022-11-23 02:30:06,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:30:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 2206 transitions. [2022-11-23 02:30:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-23 02:30:06,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:06,671 INFO L195 NwaCegarLoop]: 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] [2022-11-23 02:30:06,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:30:06,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:06,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1831599231, now seen corresponding path program 1 times [2022-11-23 02:30:06,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:06,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055182303] [2022-11-23 02:30:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:30:07,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:07,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055182303] [2022-11-23 02:30:07,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055182303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:07,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:07,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:30:07,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787994079] [2022-11-23 02:30:07,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:07,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:30:07,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:07,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:30:07,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:30:07,184 INFO L87 Difference]: Start difference. First operand 1161 states and 2206 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:30:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:30:08,957 INFO L93 Difference]: Finished difference Result 3331 states and 6426 transitions. [2022-11-23 02:30:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:30:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-11-23 02:30:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:30:08,980 INFO L225 Difference]: With dead ends: 3331 [2022-11-23 02:30:08,982 INFO L226 Difference]: Without dead ends: 2262 [2022-11-23 02:30:08,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:30:08,998 INFO L413 NwaCegarLoop]: 2669 mSDtfsCounter, 1129 mSDsluCounter, 4306 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 6975 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:30:08,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 6975 Invalid, 643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 02:30:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-11-23 02:30:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1163. [2022-11-23 02:30:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 656 states have (on average 1.8323170731707317) internal successors, (1202), 1157 states have internal predecessors, (1202), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-23 02:30:09,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2208 transitions. [2022-11-23 02:30:09,491 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2208 transitions. Word has length 44 [2022-11-23 02:30:09,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:30:09,492 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 2208 transitions. [2022-11-23 02:30:09,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:30:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2208 transitions. [2022-11-23 02:30:09,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 02:30:09,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:09,507 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:30:09,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:30:09,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:09,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:09,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1300600525, now seen corresponding path program 1 times [2022-11-23 02:30:09,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:09,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444483027] [2022-11-23 02:30:09,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:09,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:09,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:30:09,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459516170] [2022-11-23 02:30:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:09,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:09,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:30:09,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:30:09,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:30:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:10,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:30:10,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:30:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:30:10,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:30:10,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:10,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444483027] [2022-11-23 02:30:10,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:30:10,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459516170] [2022-11-23 02:30:10,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459516170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:10,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:10,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:30:10,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529923057] [2022-11-23 02:30:10,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:10,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:30:10,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:10,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:30:10,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:30:10,666 INFO L87 Difference]: Start difference. First operand 1163 states and 2208 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) [2022-11-23 02:30:10,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:30:10,912 INFO L93 Difference]: Finished difference Result 2343 states and 4443 transitions. [2022-11-23 02:30:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:30:10,913 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 [2022-11-23 02:30:10,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:30:10,923 INFO L225 Difference]: With dead ends: 2343 [2022-11-23 02:30:10,938 INFO L226 Difference]: Without dead ends: 1184 [2022-11-23 02:30:10,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:30:10,959 INFO L413 NwaCegarLoop]: 2186 mSDtfsCounter, 9 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4357 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:30:10,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4357 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:30:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-11-23 02:30:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1183. [2022-11-23 02:30:11,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 676 states have (on average 1.8076923076923077) internal successors, (1222), 1177 states have internal predecessors, (1222), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-23 02:30:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2228 transitions. [2022-11-23 02:30:11,252 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2228 transitions. Word has length 96 [2022-11-23 02:30:11,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:30:11,253 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 2228 transitions. [2022-11-23 02:30:11,254 INFO L496 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) [2022-11-23 02:30:11,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2228 transitions. [2022-11-23 02:30:11,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 02:30:11,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:11,256 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:30:11,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:30:11,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:11,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:11,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:11,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1273534923, now seen corresponding path program 1 times [2022-11-23 02:30:11,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:11,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529813035] [2022-11-23 02:30:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:11,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:11,643 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:30:11,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105344962] [2022-11-23 02:30:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:11,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:11,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:30:11,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:30:11,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:30:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:12,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:30:12,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:30:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:30:12,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:30:12,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:12,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529813035] [2022-11-23 02:30:12,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:30:12,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105344962] [2022-11-23 02:30:12,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105344962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:12,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:12,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:30:12,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96670269] [2022-11-23 02:30:12,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:12,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:30:12,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:30:12,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:30:12,820 INFO L87 Difference]: Start difference. First operand 1183 states and 2228 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) [2022-11-23 02:30:13,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:30:13,002 INFO L93 Difference]: Finished difference Result 2272 states and 4345 transitions. [2022-11-23 02:30:13,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:30:13,003 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 96 [2022-11-23 02:30:13,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:30:13,014 INFO L225 Difference]: With dead ends: 2272 [2022-11-23 02:30:13,014 INFO L226 Difference]: Without dead ends: 1204 [2022-11-23 02:30:13,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:30:13,023 INFO L413 NwaCegarLoop]: 2186 mSDtfsCounter, 10 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4357 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:30:13,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4357 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:30:13,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-11-23 02:30:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1203. [2022-11-23 02:30:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 696 states have (on average 1.7844827586206897) internal successors, (1242), 1197 states have internal predecessors, (1242), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-23 02:30:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 2248 transitions. [2022-11-23 02:30:13,285 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 2248 transitions. Word has length 96 [2022-11-23 02:30:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:30:13,286 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 2248 transitions. [2022-11-23 02:30:13,286 INFO L496 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) [2022-11-23 02:30:13,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 2248 transitions. [2022-11-23 02:30:13,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 02:30:13,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:13,289 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:30:13,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 02:30:13,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:13,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:13,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:13,501 INFO L85 PathProgramCache]: Analyzing trace with hash 992737231, now seen corresponding path program 1 times [2022-11-23 02:30:13,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:13,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141483583] [2022-11-23 02:30:13,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:13,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:13,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:30:13,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015304600] [2022-11-23 02:30:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:13,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:13,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:30:13,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:30:13,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:30:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:14,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:30:14,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:30:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:30:14,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:30:14,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:14,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141483583] [2022-11-23 02:30:14,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:30:14,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015304600] [2022-11-23 02:30:14,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015304600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:14,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:14,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:30:14,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099339557] [2022-11-23 02:30:14,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:14,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:30:14,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:30:14,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:30:14,967 INFO L87 Difference]: Start difference. First operand 1203 states and 2248 transitions. Second operand has 4 states, 4 states have (on average 24.0) 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) [2022-11-23 02:30:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:30:15,158 INFO L93 Difference]: Finished difference Result 2394 states and 4484 transitions. [2022-11-23 02:30:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:30:15,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) 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 [2022-11-23 02:30:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:30:15,169 INFO L225 Difference]: With dead ends: 2394 [2022-11-23 02:30:15,169 INFO L226 Difference]: Without dead ends: 1195 [2022-11-23 02:30:15,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:30:15,178 INFO L413 NwaCegarLoop]: 2186 mSDtfsCounter, 1186 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 4880 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:30:15,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 4880 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:30:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-11-23 02:30:15,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1189. [2022-11-23 02:30:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 682 states have (on average 1.7903225806451613) internal successors, (1221), 1183 states have internal predecessors, (1221), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-23 02:30:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 2227 transitions. [2022-11-23 02:30:15,472 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 2227 transitions. Word has length 96 [2022-11-23 02:30:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:30:15,472 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 2227 transitions. [2022-11-23 02:30:15,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) 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) [2022-11-23 02:30:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 2227 transitions. [2022-11-23 02:30:15,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 02:30:15,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:15,475 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:30:15,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:30:15,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:15,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:15,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:15,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1068361891, now seen corresponding path program 1 times [2022-11-23 02:30:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:15,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467177221] [2022-11-23 02:30:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:15,869 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:30:15,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198829881] [2022-11-23 02:30:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:15,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:15,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:30:15,880 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:30:15,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:30:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:17,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:30:17,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:30:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:30:17,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:30:17,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:17,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467177221] [2022-11-23 02:30:17,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:30:17,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198829881] [2022-11-23 02:30:17,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198829881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:17,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:17,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:30:17,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722449877] [2022-11-23 02:30:17,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:30:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:17,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:30:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:30:17,177 INFO L87 Difference]: Start difference. First operand 1189 states and 2227 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2022-11-23 02:30:17,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:30:17,399 INFO L93 Difference]: Finished difference Result 2269 states and 4325 transitions. [2022-11-23 02:30:17,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:30:17,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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 96 [2022-11-23 02:30:17,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:30:17,470 INFO L225 Difference]: With dead ends: 2269 [2022-11-23 02:30:17,471 INFO L226 Difference]: Without dead ends: 1181 [2022-11-23 02:30:17,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:30:17,478 INFO L413 NwaCegarLoop]: 2177 mSDtfsCounter, 1078 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 4964 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:30:17,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 4964 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:30:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-23 02:30:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1175. [2022-11-23 02:30:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 668 states have (on average 1.7964071856287425) internal successors, (1200), 1169 states have internal predecessors, (1200), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-23 02:30:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2206 transitions. [2022-11-23 02:30:17,720 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2206 transitions. Word has length 96 [2022-11-23 02:30:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:30:17,721 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 2206 transitions. [2022-11-23 02:30:17,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2022-11-23 02:30:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2206 transitions. [2022-11-23 02:30:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 02:30:17,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:17,723 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:30:17,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 02:30:17,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 02:30:17,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:17,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:17,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1951210737, now seen corresponding path program 1 times [2022-11-23 02:30:17,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:17,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153169657] [2022-11-23 02:30:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:17,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:18,094 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:30:18,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875298551] [2022-11-23 02:30:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:18,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:18,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:30:18,101 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:30:18,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:30:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:19,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:30:19,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:30:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:30:19,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:30:19,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:19,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153169657] [2022-11-23 02:30:19,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:30:19,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875298551] [2022-11-23 02:30:19,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875298551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:19,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:19,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:30:19,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893646596] [2022-11-23 02:30:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:19,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:30:19,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:19,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:30:19,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:30:19,667 INFO L87 Difference]: Start difference. First operand 1175 states and 2206 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) [2022-11-23 02:30:19,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:30:19,921 INFO L93 Difference]: Finished difference Result 3442 states and 6516 transitions. [2022-11-23 02:30:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:30:19,922 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 [2022-11-23 02:30:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:30:19,941 INFO L225 Difference]: With dead ends: 3442 [2022-11-23 02:30:19,941 INFO L226 Difference]: Without dead ends: 2271 [2022-11-23 02:30:19,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:30:19,951 INFO L413 NwaCegarLoop]: 2733 mSDtfsCounter, 1065 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 4903 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:30:19,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 4903 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:30:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2022-11-23 02:30:20,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2269. [2022-11-23 02:30:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 1262 states have (on average 1.8264659270998416) internal successors, (2305), 2263 states have internal predecessors, (2305), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-23 02:30:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 4311 transitions. [2022-11-23 02:30:20,640 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 4311 transitions. Word has length 96 [2022-11-23 02:30:20,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:30:20,641 INFO L495 AbstractCegarLoop]: Abstraction has 2269 states and 4311 transitions. [2022-11-23 02:30:20,641 INFO L496 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) [2022-11-23 02:30:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 4311 transitions. [2022-11-23 02:30:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 02:30:20,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:20,644 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:30:20,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:30:20,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:20,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:20,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:20,858 INFO L85 PathProgramCache]: Analyzing trace with hash -295073475, now seen corresponding path program 1 times [2022-11-23 02:30:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:20,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082920208] [2022-11-23 02:30:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:20,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:20,955 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:30:20,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288289190] [2022-11-23 02:30:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:20,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:20,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:30:20,958 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:30:20,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:30:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:22,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:30:22,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:30:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:30:22,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:30:22,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:22,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082920208] [2022-11-23 02:30:22,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:30:22,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288289190] [2022-11-23 02:30:22,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288289190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:22,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:22,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:30:22,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638613283] [2022-11-23 02:30:22,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:22,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:30:22,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:30:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:30:22,304 INFO L87 Difference]: Start difference. First operand 2269 states and 4311 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:30:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:30:24,603 INFO L93 Difference]: Finished difference Result 3440 states and 6513 transitions. [2022-11-23 02:30:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:30:24,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-11-23 02:30:24,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:30:24,623 INFO L225 Difference]: With dead ends: 3440 [2022-11-23 02:30:24,623 INFO L226 Difference]: Without dead ends: 1219 [2022-11-23 02:30:24,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:30:24,637 INFO L413 NwaCegarLoop]: 2196 mSDtfsCounter, 2248 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 3267 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:30:24,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 3267 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 02:30:24,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-11-23 02:30:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2022-11-23 02:30:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 712 states have (on average 1.7514044943820224) internal successors, (1247), 1213 states have internal predecessors, (1247), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-23 02:30:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 2253 transitions. [2022-11-23 02:30:24,920 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 2253 transitions. Word has length 111 [2022-11-23 02:30:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:30:24,922 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 2253 transitions. [2022-11-23 02:30:24,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:30:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 2253 transitions. [2022-11-23 02:30:24,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-23 02:30:24,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:24,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:30:24,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:30:25,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:25,136 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1774140084, now seen corresponding path program 1 times [2022-11-23 02:30:25,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:25,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131549884] [2022-11-23 02:30:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:25,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:25,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:30:25,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144592049] [2022-11-23 02:30:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:25,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:25,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:30:25,212 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:30:25,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:30:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:57,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:30:57,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:30:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:30:57,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:30:57,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:57,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131549884] [2022-11-23 02:30:57,096 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:30:57,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144592049] [2022-11-23 02:30:57,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144592049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:57,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:57,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:30:57,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825150602] [2022-11-23 02:30:57,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:57,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:30:57,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:57,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:30:57,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:30:57,099 INFO L87 Difference]: Start difference. First operand 1219 states and 2253 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:30:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:30:57,252 INFO L93 Difference]: Finished difference Result 2390 states and 4455 transitions. [2022-11-23 02:30:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:30:57,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 118 [2022-11-23 02:30:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:30:57,265 INFO L225 Difference]: With dead ends: 2390 [2022-11-23 02:30:57,265 INFO L226 Difference]: Without dead ends: 1222 [2022-11-23 02:30:57,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:30:57,275 INFO L413 NwaCegarLoop]: 2188 mSDtfsCounter, 2 mSDsluCounter, 4372 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6560 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:30:57,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6560 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:30:57,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-11-23 02:30:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2022-11-23 02:30:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 714 states have (on average 1.7507002801120448) internal successors, (1250), 1216 states have internal predecessors, (1250), 503 states have call successors, (503), 2 states have call predecessors, (503), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-23 02:30:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 2257 transitions. [2022-11-23 02:30:57,589 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 2257 transitions. Word has length 118 [2022-11-23 02:30:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:30:57,590 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 2257 transitions. [2022-11-23 02:30:57,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:30:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 2257 transitions. [2022-11-23 02:30:57,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-23 02:30:57,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:57,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:30:57,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:30:57,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 02:30:57,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:57,795 INFO L85 PathProgramCache]: Analyzing trace with hash -725533970, now seen corresponding path program 1 times [2022-11-23 02:30:57,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:57,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705808108] [2022-11-23 02:30:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:57,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:57,866 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:30:57,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592158235] [2022-11-23 02:30:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:57,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:30:57,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:30:57,868 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:30:57,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 02:31:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 02:31:31,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:31:32,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:31:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:31:32,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:32,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705808108] [2022-11-23 02:31:32,181 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:31:32,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592158235] [2022-11-23 02:31:32,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592158235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:31:32,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:31:32,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-23 02:31:32,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438871963] [2022-11-23 02:31:32,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:31:32,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:31:32,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:32,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:31:32,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:31:32,184 INFO L87 Difference]: Start difference. First operand 1222 states and 2257 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 02:31:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:32,459 INFO L93 Difference]: Finished difference Result 2404 states and 4476 transitions. [2022-11-23 02:31:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:31:32,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-11-23 02:31:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:32,467 INFO L225 Difference]: With dead ends: 2404 [2022-11-23 02:31:32,468 INFO L226 Difference]: Without dead ends: 1231 [2022-11-23 02:31:32,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:31:32,473 INFO L413 NwaCegarLoop]: 2188 mSDtfsCounter, 21 mSDsluCounter, 4370 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6558 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:32,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6558 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:31:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-11-23 02:31:32,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2022-11-23 02:31:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 722 states have (on average 1.7479224376731302) internal successors, (1262), 1224 states have internal predecessors, (1262), 503 states have call successors, (503), 3 states have call predecessors, (503), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-23 02:31:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 2269 transitions. [2022-11-23 02:31:32,711 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 2269 transitions. Word has length 120 [2022-11-23 02:31:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:32,712 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 2269 transitions. [2022-11-23 02:31:32,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 02:31:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 2269 transitions. [2022-11-23 02:31:32,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-23 02:31:32,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:32,714 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:32,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:32,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:32,915 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1588617548, now seen corresponding path program 2 times [2022-11-23 02:31:32,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:32,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902885581] [2022-11-23 02:31:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:32,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:32,981 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:31:32,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251716950] [2022-11-23 02:31:32,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:31:32,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:32,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:32,983 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:33,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 02:32:01,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:32:01,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:32:01,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 02:32:01,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:32:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 02:32:01,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:32:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:32:02,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:32:02,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902885581] [2022-11-23 02:32:02,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:32:02,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251716950] [2022-11-23 02:32:02,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251716950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:32:02,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:32:02,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-23 02:32:02,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892725833] [2022-11-23 02:32:02,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:32:02,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 02:32:02,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:32:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 02:32:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:32:02,166 INFO L87 Difference]: Start difference. First operand 1231 states and 2269 transitions. Second operand has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 02:32:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:32:03,211 INFO L93 Difference]: Finished difference Result 2422 states and 4501 transitions. [2022-11-23 02:32:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 02:32:03,212 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-11-23 02:32:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:32:03,221 INFO L225 Difference]: With dead ends: 2422 [2022-11-23 02:32:03,222 INFO L226 Difference]: Without dead ends: 1246 [2022-11-23 02:32:03,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2022-11-23 02:32:03,231 INFO L413 NwaCegarLoop]: 2190 mSDtfsCounter, 50 mSDsluCounter, 15295 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 17485 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:32:03,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 17485 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 02:32:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-11-23 02:32:03,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1240. [2022-11-23 02:32:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 731 states have (on average 1.7428180574555403) internal successors, (1274), 1233 states have internal predecessors, (1274), 503 states have call successors, (503), 3 states have call predecessors, (503), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-23 02:32:03,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2281 transitions. [2022-11-23 02:32:03,487 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2281 transitions. Word has length 124 [2022-11-23 02:32:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:32:03,487 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 2281 transitions. [2022-11-23 02:32:03,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 02:32:03,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2281 transitions. [2022-11-23 02:32:03,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-23 02:32:03,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:32:03,491 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:32:03,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 02:32:03,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:03,692 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:32:03,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:32:03,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1818700008, now seen corresponding path program 3 times [2022-11-23 02:32:03,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:32:03,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270746118] [2022-11-23 02:32:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:03,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:32:03,771 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:32:03,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343121117] [2022-11-23 02:32:03,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:32:03,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:03,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:32:03,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:32:03,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd0f6c8-a8e7-45b8-ba3d-04d37c01e144/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process