./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro --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 64bit --witnessprinter.graph.data.programhash b1c027fee61a8058055c949088f7676db617c5b1b19a093573b50c07cbdcbacd --- 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-8393723 [2022-11-18 18:31:11,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:31:11,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:31:11,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:31:11,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:31:11,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:31:11,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:31:11,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:31:11,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:31:11,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:31:11,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:31:11,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:31:11,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:31:11,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:31:11,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:31:11,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:31:11,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:31:11,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:31:11,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:31:11,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:31:11,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:31:11,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:31:11,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:31:11,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:31:11,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:31:11,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:31:11,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:31:11,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:31:11,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:31:11,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:31:11,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:31:11,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:31:11,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:31:11,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:31:11,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:31:11,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:31:11,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:31:11,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:31:11,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:31:11,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:31:11,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:31:11,563 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 18:31:11,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:31:11,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:31:11,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:31:11,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:31:11,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:31:11,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:31:11,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:31:11,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:31:11,623 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:31:11,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:31:11,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:31:11,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:31:11,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:31:11,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:31:11,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:31:11,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:31:11,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:31:11,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:31:11,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:31:11,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:31:11,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:31:11,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:31:11,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:31:11,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:31:11,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:31:11,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:31:11,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:31:11,629 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:31:11,630 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:31:11,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:31:11,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c027fee61a8058055c949088f7676db617c5b1b19a093573b50c07cbdcbacd [2022-11-18 18:31:11,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:31:11,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:31:12,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:31:12,001 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:31:12,002 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:31:12,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2022-11-18 18:31:12,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/data/b3e5c761a/c80e008d0a3a458ebba2a3037e94f9c6/FLAG14cebf70f [2022-11-18 18:31:13,541 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:31:13,541 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2022-11-18 18:31:13,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/data/b3e5c761a/c80e008d0a3a458ebba2a3037e94f9c6/FLAG14cebf70f [2022-11-18 18:31:13,972 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/data/b3e5c761a/c80e008d0a3a458ebba2a3037e94f9c6 [2022-11-18 18:31:13,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:31:13,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:31:13,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:31:13,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:31:13,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:31:13,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:31:13" (1/1) ... [2022-11-18 18:31:13,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629e1219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:13, skipping insertion in model container [2022-11-18 18:31:13,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:31:13" (1/1) ... [2022-11-18 18:31:13,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:31:14,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:31:24,299 WARN L234 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_3bf3401d-b353-4101-93ad-b1509ec83bd9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i[723056,723069] [2022-11-18 18:31:24,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:31:24,925 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:31:26,108 WARN L234 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_3bf3401d-b353-4101-93ad-b1509ec83bd9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i[723056,723069] [2022-11-18 18:31:26,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:31:26,644 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:31:26,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26 WrapperNode [2022-11-18 18:31:26,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:31:26,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:31:26,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:31:26,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:31:26,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:27,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:27,864 INFO L138 Inliner]: procedures = 905, calls = 10026, calls flagged for inlining = 323, calls inlined = 188, statements flattened = 12744 [2022-11-18 18:31:27,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:31:27,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:31:27,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:31:27,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:31:27,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:27,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:27,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:27,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:28,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:28,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:28,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:28,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:28,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:31:28,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:31:28,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:31:28,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:31:28,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (1/1) ... [2022-11-18 18:31:28,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:31:28,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:28,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:31:28,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:31:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_ICM_page [2022-11-18 18:31:28,549 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_ICM_page [2022-11-18 18:31:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-18 18:31:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_device [2022-11-18 18:31:28,549 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_device [2022-11-18 18:31:28,549 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_status_to_errno [2022-11-18 18:31:28,550 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_status_to_errno [2022-11-18 18:31:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icms [2022-11-18 18:31:28,550 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icms [2022-11-18 18:31:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-18 18:31:28,550 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-18 18:31:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-18 18:31:28,550 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-18 18:31:28,550 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-18 18:31:28,551 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-18 18:31:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_key [2022-11-18 18:31:28,551 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_key [2022-11-18 18:31:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure key_to_hw_index [2022-11-18 18:31:28,551 INFO L138 BoogieDeclarations]: Found implementation of procedure key_to_hw_index [2022-11-18 18:31:28,551 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-18 18:31:28,552 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-18 18:31:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2022-11-18 18:31:28,552 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2022-11-18 18:31:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-18 18:31:28,552 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-18 18:31:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unmap_eq_icm [2022-11-18 18:31:28,553 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unmap_eq_icm [2022-11-18 18:31:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-18 18:31:28,553 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-18 18:31:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uarc_virt [2022-11-18 18:31:28,553 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uarc_virt [2022-11-18 18:31:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2022-11-18 18:31:28,553 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2022-11-18 18:31:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-18 18:31:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-18 18:31:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_ah [2022-11-18 18:31:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_ah [2022-11-18 18:31:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-18 18:31:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-18 18:31:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_zero [2022-11-18 18:31:28,555 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_zero [2022-11-18 18:31:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_cleanup [2022-11-18 18:31:28,555 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_cleanup [2022-11-18 18:31:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure ib_unregister_device [2022-11-18 18:31:28,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_unregister_device [2022-11-18 18:31:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-18 18:31:28,555 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-18 18:31:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure ib_query_port [2022-11-18 18:31:28,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_query_port [2022-11-18 18:31:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_region [2022-11-18 18:31:28,556 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_region [2022-11-18 18:31:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-18 18:31:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-18 18:31:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-18 18:31:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-18 18:31:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure pci_pcie_cap [2022-11-18 18:31:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_pcie_cap [2022-11-18 18:31:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_CLOSE_IB [2022-11-18 18:31:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_CLOSE_IB [2022-11-18 18:31:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure clear_page [2022-11-18 18:31:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_page [2022-11-18 18:31:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_pd_alloc [2022-11-18 18:31:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_pd_alloc [2022-11-18 18:31:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:31:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_init_one [2022-11-18 18:31:28,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_init_one [2022-11-18 18:31:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_create_eq [2022-11-18 18:31:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_create_eq [2022-11-18 18:31:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write_mtt [2022-11-18 18:31:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write_mtt [2022-11-18 18:31:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_icm_table [2022-11-18 18:31:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_icm_table [2022-11-18 18:31:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_catas_cleanup [2022-11-18 18:31:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_catas_cleanup [2022-11-18 18:31:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure hw_index_to_key [2022-11-18 18:31:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_index_to_key [2022-11-18 18:31:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-18 18:31:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-18 18:31:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write64_raw [2022-11-18 18:31:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write64_raw [2022-11-18 18:31:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-18 18:31:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-18 18:31:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_use_polling [2022-11-18 18:31:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_use_polling [2022-11-18 18:31:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2022-11-18 18:31:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2022-11-18 18:31:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icm_table [2022-11-18 18:31:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icm_table [2022-11-18 18:31:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:31:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mtt_range [2022-11-18 18:31:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mtt_range [2022-11-18 18:31:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-18 18:31:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-18 18:31:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:31:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:31:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-18 18:31:28,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-18 18:31:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-18 18:31:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-18 18:31:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-18 18:31:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uar_free [2022-11-18 18:31:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uar_free [2022-11-18 18:31:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_cleanup [2022-11-18 18:31:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_cleanup [2022-11-18 18:31:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure tavor_eq_req_not [2022-11-18 18:31:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure tavor_eq_req_not [2022-11-18 18:31:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-18 18:31:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-18 18:31:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2022-11-18 18:31:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2022-11-18 18:31:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-18 18:31:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-18 18:31:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_array_cleanup [2022-11-18 18:31:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_array_cleanup [2022-11-18 18:31:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_eq_table [2022-11-18 18:31:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_eq_table [2022-11-18 18:31:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-18 18:31:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-18 18:31:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:31:28,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:31:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-18 18:31:28,574 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-18 18:31:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-18 18:31:28,575 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-18 18:31:28,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 18:31:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-18 18:31:28,578 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-18 18:31:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_av_table [2022-11-18 18:31:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_av_table [2022-11-18 18:31:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icm [2022-11-18 18:31:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icm [2022-11-18 18:31:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_alloc_mtt [2022-11-18 18:31:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_alloc_mtt [2022-11-18 18:31:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2022-11-18 18:31:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2022-11-18 18:31:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 18:31:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 18:31:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 18:31:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 18:31:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_is_memfree [2022-11-18 18:31:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_is_memfree [2022-11-18 18:31:28,585 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_eq_req_not [2022-11-18 18:31:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_eq_req_not [2022-11-18 18:31:28,585 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_ICM [2022-11-18 18:31:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_ICM [2022-11-18 18:31:28,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 18:31:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 18:31:28,585 INFO L130 BoogieDeclarations]: Found specification of procedure set_eqe_hw [2022-11-18 18:31:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure set_eqe_hw [2022-11-18 18:31:28,585 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-18 18:31:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-18 18:31:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-18 18:31:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-18 18:31:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:31:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-18 18:31:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-18 18:31:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_update_rate [2022-11-18 18:31:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_update_rate [2022-11-18 18:31:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:31:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_ICM [2022-11-18 18:31:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_ICM [2022-11-18 18:31:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_init [2022-11-18 18:31:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_init [2022-11-18 18:31:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-18 18:31:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-18 18:31:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-18 18:31:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-18 18:31:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_uar_table [2022-11-18 18:31:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_uar_table [2022-11-18 18:31:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-18 18:31:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-18 18:31:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-18 18:31:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-18 18:31:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_icm_addr [2022-11-18 18:31:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_icm_addr [2022-11-18 18:31:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2022-11-18 18:31:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2022-11-18 18:31:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-18 18:31:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-18 18:31:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-18 18:31:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-18 18:31:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-18 18:31:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-18 18:31:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mtt [2022-11-18 18:31:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mtt [2022-11-18 18:31:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure go_bit [2022-11-18 18:31:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure go_bit [2022-11-18 18:31:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:31:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free [2022-11-18 18:31:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free [2022-11-18 18:31:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_zero_bit [2022-11-18 18:31:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_zero_bit [2022-11-18 18:31:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-18 18:31:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-18 18:31:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 18:31:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 18:31:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mthca_device_mutex [2022-11-18 18:31:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mthca_device_mutex [2022-11-18 18:31:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_SW2HW_MPT [2022-11-18 18:31:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_SW2HW_MPT [2022-11-18 18:31:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure pcie_capability_write_word [2022-11-18 18:31:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure pcie_capability_write_word [2022-11-18 18:31:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_irqs [2022-11-18 18:31:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_irqs [2022-11-18 18:31:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_mr_table [2022-11-18 18:31:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_mr_table [2022-11-18 18:31:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure __be64_to_cpup [2022-11-18 18:31:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __be64_to_cpup [2022-11-18 18:31:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure __buggy_use_of_MTHCA_GET [2022-11-18 18:31:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2022-11-18 18:31:28,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2022-11-18 18:31:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2022-11-18 18:31:28,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2022-11-18 18:31:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc_notrans [2022-11-18 18:31:28,592 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc_notrans [2022-11-18 18:31:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-11-18 18:31:28,592 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-11-18 18:31:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-18 18:31:28,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-18 18:31:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_put [2022-11-18 18:31:28,593 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_put [2022-11-18 18:31:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc [2022-11-18 18:31:28,593 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc [2022-11-18 18:31:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write64 [2022-11-18 18:31:28,593 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write64 [2022-11-18 18:31:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-18 18:31:28,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-18 18:31:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_imm [2022-11-18 18:31:28,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_imm [2022-11-18 18:31:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_mcg_table [2022-11-18 18:31:28,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_mcg_table [2022-11-18 18:31:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_qp_table [2022-11-18 18:31:28,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_qp_table [2022-11-18 18:31:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-18 18:31:28,594 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-18 18:31:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_device [2022-11-18 18:31:28,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_device [2022-11-18 18:31:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure ib_unregister_mad_agent [2022-11-18 18:31:28,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_unregister_mad_agent [2022-11-18 18:31:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-18 18:31:28,597 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-18 18:31:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-18 18:31:28,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-18 18:31:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_INIT_HCA [2022-11-18 18:31:28,598 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_INIT_HCA [2022-11-18 18:31:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_hw_index_to_key [2022-11-18 18:31:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_hw_index_to_key [2022-11-18 18:31:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 18:31:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 18:31:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-18 18:31:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-18 18:31:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-11-18 18:31:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-11-18 18:31:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_cq_table [2022-11-18 18:31:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_cq_table [2022-11-18 18:31:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_cleanup [2022-11-18 18:31:28,604 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_cleanup [2022-11-18 18:31:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-18 18:31:28,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-18 18:31:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_close_hca [2022-11-18 18:31:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_close_hca [2022-11-18 18:31:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_EQ [2022-11-18 18:31:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_EQ [2022-11-18 18:31:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure down [2022-11-18 18:31:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure down [2022-11-18 18:31:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-18 18:31:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-18 18:31:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAD_IFC [2022-11-18 18:31:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAD_IFC [2022-11-18 18:31:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_map_cmd [2022-11-18 18:31:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_map_cmd [2022-11-18 18:31:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2022-11-18 18:31:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2022-11-18 18:31:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:31:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_mthca_icm_table [2022-11-18 18:31:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_mthca_icm_table [2022-11-18 18:31:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_eq [2022-11-18 18:31:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_eq [2022-11-18 18:31:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_alloc [2022-11-18 18:31:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_alloc [2022-11-18 18:31:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mailbox [2022-11-18 18:31:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mailbox [2022-11-18 18:31:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-18 18:31:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-18 18:31:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-18 18:31:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-18 18:31:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 18:31:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_DISABLE_LAM [2022-11-18 18:31:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_DISABLE_LAM [2022-11-18 18:31:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-18 18:31:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-18 18:31:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 18:31:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_cpu [2022-11-18 18:31:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_cpu [2022-11-18 18:31:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uar_alloc [2022-11-18 18:31:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uar_alloc [2022-11-18 18:31:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_empty [2022-11-18 18:31:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_empty [2022-11-18 18:31:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mthca_device_mutex [2022-11-18 18:31:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mthca_device_mutex [2022-11-18 18:31:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_setup_hca [2022-11-18 18:31:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_setup_hca [2022-11-18 18:31:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-18 18:31:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-18 18:31:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc [2022-11-18 18:31:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc [2022-11-18 18:31:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_CONF_SPECIAL_QP [2022-11-18 18:31:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_CONF_SPECIAL_QP [2022-11-18 18:31:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_map_reg [2022-11-18 18:31:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_map_reg [2022-11-18 18:31:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_check_profile_val [2022-11-18 18:31:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_check_profile_val [2022-11-18 18:31:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_sg [2022-11-18 18:31:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_sg [2022-11-18 18:31:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_FA [2022-11-18 18:31:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_FA [2022-11-18 18:31:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_free [2022-11-18 18:31:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_free [2022-11-18 18:31:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2022-11-18 18:31:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2022-11-18 18:31:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write_mtt_size [2022-11-18 18:31:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write_mtt_size [2022-11-18 18:31:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure dma_get_cache_alignment [2022-11-18 18:31:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_get_cache_alignment [2022-11-18 18:31:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mr [2022-11-18 18:31:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mr [2022-11-18 18:31:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mailbox [2022-11-18 18:31:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mailbox [2022-11-18 18:31:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-18 18:31:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-18 18:31:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-18 18:31:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-18 18:31:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_dev_lim [2022-11-18 18:31:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_dev_lim [2022-11-18 18:31:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure __roundup_pow_of_two [2022-11-18 18:31:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __roundup_pow_of_two [2022-11-18 18:31:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure tavor_hw_index_to_key [2022-11-18 18:31:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure tavor_hw_index_to_key [2022-11-18 18:31:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_QUERY_FW [2022-11-18 18:31:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_QUERY_FW [2022-11-18 18:31:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure writeq [2022-11-18 18:31:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure writeq [2022-11-18 18:31:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-18 18:31:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-18 18:31:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_SYS_DIS [2022-11-18 18:31:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_SYS_DIS [2022-11-18 18:31:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_init [2022-11-18 18:31:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_init [2022-11-18 18:31:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_box [2022-11-18 18:31:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_box [2022-11-18 18:31:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 18:31:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2022-11-18 18:31:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2022-11-18 18:31:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-18 18:31:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-18 18:31:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_make_profile [2022-11-18 18:31:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_make_profile [2022-11-18 18:31:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure fls64 [2022-11-18 18:31:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure fls64 [2022-11-18 18:31:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-18 18:31:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-18 18:31:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unregister_device [2022-11-18 18:31:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unregister_device [2022-11-18 18:31:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_key_to_hw_index [2022-11-18 18:31:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_key_to_hw_index [2022-11-18 18:31:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2022-11-18 18:31:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2022-11-18 18:31:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-18 18:31:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-18 18:31:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure up [2022-11-18 18:31:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2022-11-18 18:31:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-18 18:31:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-18 18:31:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-18 18:31:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-18 18:31:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 18:31:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_find [2022-11-18 18:31:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_find [2022-11-18 18:31:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_icm [2022-11-18 18:31:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_icm [2022-11-18 18:31:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_icm_size [2022-11-18 18:31:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_icm_size [2022-11-18 18:31:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-18 18:31:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-18 18:31:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-11-18 18:31:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-11-18 18:31:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_srq_table [2022-11-18 18:31:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_srq_table [2022-11-18 18:31:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_poll [2022-11-18 18:31:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_poll [2022-11-18 18:31:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_ICM_AUX [2022-11-18 18:31:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_ICM_AUX [2022-11-18 18:31:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-11-18 18:31:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-11-18 18:31:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_wait [2022-11-18 18:31:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_wait [2022-11-18 18:31:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc_phys [2022-11-18 18:31:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc_phys [2022-11-18 18:31:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_sg [2022-11-18 18:31:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_sg [2022-11-18 18:31:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 18:31:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 18:31:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure get_eqe [2022-11-18 18:31:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure get_eqe [2022-11-18 18:31:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure async_mask [2022-11-18 18:31:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure async_mask [2022-11-18 18:31:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_array_init [2022-11-18 18:31:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_array_init [2022-11-18 18:31:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_pd_free [2022-11-18 18:31:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_pd_free [2022-11-18 18:31:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd [2022-11-18 18:31:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd [2022-11-18 18:31:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-18 18:31:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-18 18:31:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_get [2022-11-18 18:31:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_get [2022-11-18 18:31:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_remove_one [2022-11-18 18:31:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_remove_one [2022-11-18 18:31:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-18 18:31:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-18 18:31:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_pd_table [2022-11-18 18:31:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_pd_table [2022-11-18 18:31:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure init_query_mad [2022-11-18 18:31:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure init_query_mad [2022-11-18 18:31:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2022-11-18 18:31:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2022-11-18 18:31:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_mthca_icm_table [2022-11-18 18:31:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_mthca_icm_table [2022-11-18 18:31:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_post [2022-11-18 18:31:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_post [2022-11-18 18:31:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-18 18:31:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-18 18:31:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-18 18:31:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-18 18:31:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:31:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unmap_eq_regs [2022-11-18 18:31:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unmap_eq_regs [2022-11-18 18:31:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure __buggy_use_of_MTHCA_PUT [2022-11-18 18:31:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mtt [2022-11-18 18:31:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mtt [2022-11-18 18:31:30,331 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:31:30,340 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:32:06,882 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:32:06,931 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:32:06,935 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:32:06,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:06 BoogieIcfgContainer [2022-11-18 18:32:06,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:32:06,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:32:06,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:32:06,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:32:06,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:31:13" (1/3) ... [2022-11-18 18:32:06,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd35cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:32:06, skipping insertion in model container [2022-11-18 18:32:06,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:31:26" (2/3) ... [2022-11-18 18:32:06,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd35cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:32:06, skipping insertion in model container [2022-11-18 18:32:06,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:06" (3/3) ... [2022-11-18 18:32:06,961 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2022-11-18 18:32:06,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:32:06,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:32:07,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:32:07,161 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;@1b4f0e3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:32:07,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:32:07,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 5003 states, 3578 states have (on average 1.3767467859139184) internal successors, (4926), 3647 states have internal predecessors, (4926), 1213 states have call successors, (1213), 210 states have call predecessors, (1213), 210 states have return successors, (1213), 1213 states have call predecessors, (1213), 1213 states have call successors, (1213) [2022-11-18 18:32:07,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 18:32:07,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:07,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:07,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:07,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash 865880660, now seen corresponding path program 1 times [2022-11-18 18:32:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:07,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728875818] [2022-11-18 18:32:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:07,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:08,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:08,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728875818] [2022-11-18 18:32:08,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728875818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:08,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:08,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:32:08,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154271519] [2022-11-18 18:32:08,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:08,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:08,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:08,136 INFO L87 Difference]: Start difference. First operand has 5003 states, 3578 states have (on average 1.3767467859139184) internal successors, (4926), 3647 states have internal predecessors, (4926), 1213 states have call successors, (1213), 210 states have call predecessors, (1213), 210 states have return successors, (1213), 1213 states have call predecessors, (1213), 1213 states have call successors, (1213) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:08,763 INFO L93 Difference]: Finished difference Result 10125 states and 15144 transitions. [2022-11-18 18:32:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:08,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 18:32:08,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:08,840 INFO L225 Difference]: With dead ends: 10125 [2022-11-18 18:32:08,841 INFO L226 Difference]: Without dead ends: 5099 [2022-11-18 18:32:08,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:08,893 INFO L413 NwaCegarLoop]: 7313 mSDtfsCounter, 198 mSDsluCounter, 7286 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 14599 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:08,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 14599 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:32:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5099 states. [2022-11-18 18:32:09,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5099 to 5069. [2022-11-18 18:32:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 3628 states have (on average 1.3745865490628446) internal successors, (4987), 3696 states have internal predecessors, (4987), 1225 states have call successors, (1225), 216 states have call predecessors, (1225), 215 states have return successors, (1206), 1205 states have call predecessors, (1206), 1206 states have call successors, (1206) [2022-11-18 18:32:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 7418 transitions. [2022-11-18 18:32:09,327 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 7418 transitions. Word has length 18 [2022-11-18 18:32:09,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:09,328 INFO L495 AbstractCegarLoop]: Abstraction has 5069 states and 7418 transitions. [2022-11-18 18:32:09,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 7418 transitions. [2022-11-18 18:32:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 18:32:09,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:09,333 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] [2022-11-18 18:32:09,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:32:09,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash 728035721, now seen corresponding path program 1 times [2022-11-18 18:32:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:09,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136017403] [2022-11-18 18:32:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:09,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:09,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:32:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:09,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:09,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136017403] [2022-11-18 18:32:09,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136017403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:09,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:09,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:32:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959903020] [2022-11-18 18:32:09,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:09,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:09,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:09,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:09,799 INFO L87 Difference]: Start difference. First operand 5069 states and 7418 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:32:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:10,616 INFO L93 Difference]: Finished difference Result 15087 states and 22084 transitions. [2022-11-18 18:32:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:10,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-18 18:32:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:10,690 INFO L225 Difference]: With dead ends: 15087 [2022-11-18 18:32:10,690 INFO L226 Difference]: Without dead ends: 10021 [2022-11-18 18:32:10,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:10,724 INFO L413 NwaCegarLoop]: 14313 mSDtfsCounter, 7201 mSDsluCounter, 7196 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7201 SdHoareTripleChecker+Valid, 21509 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:10,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7201 Valid, 21509 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:32:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10021 states. [2022-11-18 18:32:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10021 to 10007. [2022-11-18 18:32:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10007 states, 7180 states have (on average 1.3736768802228412) internal successors, (9863), 7296 states have internal predecessors, (9863), 2403 states have call successors, (2403), 424 states have call predecessors, (2403), 423 states have return successors, (2384), 2384 states have call predecessors, (2384), 2384 states have call successors, (2384) [2022-11-18 18:32:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 14650 transitions. [2022-11-18 18:32:11,303 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 14650 transitions. Word has length 21 [2022-11-18 18:32:11,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:11,304 INFO L495 AbstractCegarLoop]: Abstraction has 10007 states and 14650 transitions. [2022-11-18 18:32:11,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:32:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 14650 transitions. [2022-11-18 18:32:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-18 18:32:11,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:11,308 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:11,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:32:11,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:11,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:11,309 INFO L85 PathProgramCache]: Analyzing trace with hash 89414917, now seen corresponding path program 1 times [2022-11-18 18:32:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:11,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028846800] [2022-11-18 18:32:11,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:11,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:13,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:32:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:32:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:14,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:32:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:32:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:32:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:14,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:32:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:14,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:32:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:14,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:32:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:14,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:32:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:14,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:32:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:32:14,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:14,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028846800] [2022-11-18 18:32:14,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028846800] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:14,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113485392] [2022-11-18 18:32:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:14,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:14,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:14,365 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:14,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:32:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:16,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 3966 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:32:16,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:32:16,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:16,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113485392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:16,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:16,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2022-11-18 18:32:16,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746812073] [2022-11-18 18:32:16,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:16,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:16,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:16,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:16,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:16,734 INFO L87 Difference]: Start difference. First operand 10007 states and 14650 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:32:17,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:17,256 INFO L93 Difference]: Finished difference Result 20011 states and 29297 transitions. [2022-11-18 18:32:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:17,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-11-18 18:32:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:17,341 INFO L225 Difference]: With dead ends: 20011 [2022-11-18 18:32:17,342 INFO L226 Difference]: Without dead ends: 10007 [2022-11-18 18:32:17,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:17,400 INFO L413 NwaCegarLoop]: 7256 mSDtfsCounter, 7223 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7223 SdHoareTripleChecker+Valid, 7256 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:17,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7223 Valid, 7256 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:32:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10007 states. [2022-11-18 18:32:17,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10007 to 10007. [2022-11-18 18:32:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10007 states, 7180 states have (on average 1.3733983286908078) internal successors, (9861), 7296 states have internal predecessors, (9861), 2403 states have call successors, (2403), 424 states have call predecessors, (2403), 423 states have return successors, (2384), 2384 states have call predecessors, (2384), 2384 states have call successors, (2384) [2022-11-18 18:32:18,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 14648 transitions. [2022-11-18 18:32:18,085 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 14648 transitions. Word has length 91 [2022-11-18 18:32:18,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:18,086 INFO L495 AbstractCegarLoop]: Abstraction has 10007 states and 14648 transitions. [2022-11-18 18:32:18,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:32:18,086 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 14648 transitions. [2022-11-18 18:32:18,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-18 18:32:18,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:18,089 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:18,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:18,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:18,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:18,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 308269635, now seen corresponding path program 1 times [2022-11-18 18:32:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:18,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293357549] [2022-11-18 18:32:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:19,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:32:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:32:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:32:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:32:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:32:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:32:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:32:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:32:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:32:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:32:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:32:20,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:20,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293357549] [2022-11-18 18:32:20,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293357549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:20,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731017971] [2022-11-18 18:32:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:20,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:20,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:20,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:20,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:32:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:22,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 3965 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:32:22,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:32:22,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:22,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731017971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:22,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:22,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:32:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164599420] [2022-11-18 18:32:22,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:22,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:22,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:22,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:22,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:22,498 INFO L87 Difference]: Start difference. First operand 10007 states and 14648 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:22,907 INFO L93 Difference]: Finished difference Result 10065 states and 14728 transitions. [2022-11-18 18:32:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:22,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 91 [2022-11-18 18:32:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:22,973 INFO L225 Difference]: With dead ends: 10065 [2022-11-18 18:32:22,974 INFO L226 Difference]: Without dead ends: 10036 [2022-11-18 18:32:22,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:22,987 INFO L413 NwaCegarLoop]: 7296 mSDtfsCounter, 7252 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7252 SdHoareTripleChecker+Valid, 7336 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:22,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7252 Valid, 7336 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:32:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2022-11-18 18:32:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 10007. [2022-11-18 18:32:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10007 states, 7180 states have (on average 1.373259052924791) internal successors, (9860), 7296 states have internal predecessors, (9860), 2403 states have call successors, (2403), 424 states have call predecessors, (2403), 423 states have return successors, (2384), 2384 states have call predecessors, (2384), 2384 states have call successors, (2384) [2022-11-18 18:32:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 14647 transitions. [2022-11-18 18:32:23,691 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 14647 transitions. Word has length 91 [2022-11-18 18:32:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:23,692 INFO L495 AbstractCegarLoop]: Abstraction has 10007 states and 14647 transitions. [2022-11-18 18:32:23,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 14647 transitions. [2022-11-18 18:32:23,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-18 18:32:23,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:23,695 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:23,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:23,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:23,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:23,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:23,921 INFO L85 PathProgramCache]: Analyzing trace with hash 365527937, now seen corresponding path program 1 times [2022-11-18 18:32:23,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:23,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804617725] [2022-11-18 18:32:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:23,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:25,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:32:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:25,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:32:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:32:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:25,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:32:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:25,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:32:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:25,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:32:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:32:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:32:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:32:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:26,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:32:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:32:26,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:26,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804617725] [2022-11-18 18:32:26,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804617725] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:26,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136204781] [2022-11-18 18:32:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:26,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:26,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:26,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:26,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:32:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:27,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 3952 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:32:27,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:32:28,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:28,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136204781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:28,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:28,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:32:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046407219] [2022-11-18 18:32:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:28,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:28,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:28,308 INFO L87 Difference]: Start difference. First operand 10007 states and 14647 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:28,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:28,818 INFO L93 Difference]: Finished difference Result 10009 states and 14648 transitions. [2022-11-18 18:32:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:28,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 91 [2022-11-18 18:32:28,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:28,870 INFO L225 Difference]: With dead ends: 10009 [2022-11-18 18:32:28,870 INFO L226 Difference]: Without dead ends: 10006 [2022-11-18 18:32:28,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:28,878 INFO L413 NwaCegarLoop]: 7254 mSDtfsCounter, 7202 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7202 SdHoareTripleChecker+Valid, 7254 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:28,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7202 Valid, 7254 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:32:28,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10006 states. [2022-11-18 18:32:29,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10006 to 10006. [2022-11-18 18:32:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10006 states, 7180 states have (on average 1.3731197771587744) internal successors, (9859), 7295 states have internal predecessors, (9859), 2402 states have call successors, (2402), 424 states have call predecessors, (2402), 423 states have return successors, (2384), 2384 states have call predecessors, (2384), 2384 states have call successors, (2384) [2022-11-18 18:32:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10006 states to 10006 states and 14645 transitions. [2022-11-18 18:32:29,476 INFO L78 Accepts]: Start accepts. Automaton has 10006 states and 14645 transitions. Word has length 91 [2022-11-18 18:32:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:29,477 INFO L495 AbstractCegarLoop]: Abstraction has 10006 states and 14645 transitions. [2022-11-18 18:32:29,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 10006 states and 14645 transitions. [2022-11-18 18:32:29,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 18:32:29,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:29,485 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:29,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:29,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:29,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:29,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:29,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1555618866, now seen corresponding path program 1 times [2022-11-18 18:32:29,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:29,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624748995] [2022-11-18 18:32:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:29,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:32:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:32:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:32:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:32:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:32:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:32:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:32:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:32:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:32:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:32:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:32:31,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:31,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624748995] [2022-11-18 18:32:31,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624748995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:31,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81261354] [2022-11-18 18:32:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:31,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:31,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:31,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:31,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:32:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:33,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 3954 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:32:33,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:32:34,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:34,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81261354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:34,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:34,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:32:34,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829829449] [2022-11-18 18:32:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:34,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:34,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:34,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:34,093 INFO L87 Difference]: Start difference. First operand 10006 states and 14645 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:34,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:34,590 INFO L93 Difference]: Finished difference Result 10008 states and 14646 transitions. [2022-11-18 18:32:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:34,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 92 [2022-11-18 18:32:34,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:34,634 INFO L225 Difference]: With dead ends: 10008 [2022-11-18 18:32:34,635 INFO L226 Difference]: Without dead ends: 10005 [2022-11-18 18:32:34,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:34,642 INFO L413 NwaCegarLoop]: 7252 mSDtfsCounter, 7199 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7199 SdHoareTripleChecker+Valid, 7252 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:34,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7199 Valid, 7252 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:32:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10005 states. [2022-11-18 18:32:35,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10005 to 10005. [2022-11-18 18:32:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10005 states, 7180 states have (on average 1.3729805013927576) internal successors, (9858), 7294 states have internal predecessors, (9858), 2401 states have call successors, (2401), 424 states have call predecessors, (2401), 423 states have return successors, (2384), 2384 states have call predecessors, (2384), 2384 states have call successors, (2384) [2022-11-18 18:32:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10005 states to 10005 states and 14643 transitions. [2022-11-18 18:32:35,356 INFO L78 Accepts]: Start accepts. Automaton has 10005 states and 14643 transitions. Word has length 92 [2022-11-18 18:32:35,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:35,358 INFO L495 AbstractCegarLoop]: Abstraction has 10005 states and 14643 transitions. [2022-11-18 18:32:35,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:35,358 INFO L276 IsEmpty]: Start isEmpty. Operand 10005 states and 14643 transitions. [2022-11-18 18:32:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 18:32:35,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:35,360 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:35,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:35,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:35,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash -981622748, now seen corresponding path program 1 times [2022-11-18 18:32:35,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:35,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884940027] [2022-11-18 18:32:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:36,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:32:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:32:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:32:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:32:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:32:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:32:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:32:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:32:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:32:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:32:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:32:37,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:37,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884940027] [2022-11-18 18:32:37,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884940027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:37,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954857745] [2022-11-18 18:32:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:37,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:37,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:37,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:37,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:32:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:39,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 3956 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:32:39,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:32:39,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:39,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954857745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:39,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:39,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:32:39,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951880678] [2022-11-18 18:32:39,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:39,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:39,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:39,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:39,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:39,765 INFO L87 Difference]: Start difference. First operand 10005 states and 14643 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:40,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:40,346 INFO L93 Difference]: Finished difference Result 10063 states and 14699 transitions. [2022-11-18 18:32:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:40,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 93 [2022-11-18 18:32:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:40,391 INFO L225 Difference]: With dead ends: 10063 [2022-11-18 18:32:40,392 INFO L226 Difference]: Without dead ends: 10059 [2022-11-18 18:32:40,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:40,400 INFO L413 NwaCegarLoop]: 7272 mSDtfsCounter, 7049 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7049 SdHoareTripleChecker+Valid, 7441 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:40,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7049 Valid, 7441 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:32:40,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10059 states. [2022-11-18 18:32:41,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10059 to 10057. [2022-11-18 18:32:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10057 states, 7220 states have (on average 1.3718836565096952) internal successors, (9905), 7332 states have internal predecessors, (9905), 2401 states have call successors, (2401), 436 states have call predecessors, (2401), 435 states have return successors, (2386), 2386 states have call predecessors, (2386), 2386 states have call successors, (2386) [2022-11-18 18:32:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 14692 transitions. [2022-11-18 18:32:41,198 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 14692 transitions. Word has length 93 [2022-11-18 18:32:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:41,199 INFO L495 AbstractCegarLoop]: Abstraction has 10057 states and 14692 transitions. [2022-11-18 18:32:41,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 14692 transitions. [2022-11-18 18:32:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:32:41,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:41,202 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:41,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:41,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:41,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:41,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:41,416 INFO L85 PathProgramCache]: Analyzing trace with hash -367607407, now seen corresponding path program 1 times [2022-11-18 18:32:41,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:41,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119802236] [2022-11-18 18:32:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:41,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:32:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:32:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:32:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:32:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:32:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:32:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:32:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:32:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:43,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:32:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:43,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:32:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:32:43,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:43,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119802236] [2022-11-18 18:32:43,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119802236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:43,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864773564] [2022-11-18 18:32:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:43,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:43,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:43,443 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:43,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:32:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:45,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 3958 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:32:45,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:32:45,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:45,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864773564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:45,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:45,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:32:45,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51923405] [2022-11-18 18:32:45,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:45,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:45,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:45,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:45,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:45,690 INFO L87 Difference]: Start difference. First operand 10057 states and 14692 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:46,360 INFO L93 Difference]: Finished difference Result 10059 states and 14693 transitions. [2022-11-18 18:32:46,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:46,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 94 [2022-11-18 18:32:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:46,410 INFO L225 Difference]: With dead ends: 10059 [2022-11-18 18:32:46,411 INFO L226 Difference]: Without dead ends: 10056 [2022-11-18 18:32:46,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:46,420 INFO L413 NwaCegarLoop]: 7246 mSDtfsCounter, 7191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7191 SdHoareTripleChecker+Valid, 7246 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:46,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7191 Valid, 7246 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:32:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10056 states. [2022-11-18 18:32:47,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10056 to 10056. [2022-11-18 18:32:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10056 states, 7220 states have (on average 1.3717451523545707) internal successors, (9904), 7331 states have internal predecessors, (9904), 2400 states have call successors, (2400), 436 states have call predecessors, (2400), 435 states have return successors, (2386), 2386 states have call predecessors, (2386), 2386 states have call successors, (2386) [2022-11-18 18:32:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10056 states to 10056 states and 14690 transitions. [2022-11-18 18:32:47,111 INFO L78 Accepts]: Start accepts. Automaton has 10056 states and 14690 transitions. Word has length 94 [2022-11-18 18:32:47,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:47,111 INFO L495 AbstractCegarLoop]: Abstraction has 10056 states and 14690 transitions. [2022-11-18 18:32:47,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 10056 states and 14690 transitions. [2022-11-18 18:32:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-18 18:32:47,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:47,113 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:47,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:47,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:47,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:47,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1487003847, now seen corresponding path program 1 times [2022-11-18 18:32:47,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:47,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602289906] [2022-11-18 18:32:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:47,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:48,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:32:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:32:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:32:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:32:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:32:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:32:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:32:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:32:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:32:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:32:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:32:49,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:49,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602289906] [2022-11-18 18:32:49,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602289906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:49,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336790466] [2022-11-18 18:32:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:49,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:49,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:49,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:49,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:32:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:50,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 3960 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:32:50,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:32:51,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:51,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336790466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:51,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:51,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:32:51,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682700074] [2022-11-18 18:32:51,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:51,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:51,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:51,339 INFO L87 Difference]: Start difference. First operand 10056 states and 14690 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:51,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:51,943 INFO L93 Difference]: Finished difference Result 10081 states and 14708 transitions. [2022-11-18 18:32:51,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:51,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 95 [2022-11-18 18:32:51,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:51,987 INFO L225 Difference]: With dead ends: 10081 [2022-11-18 18:32:51,988 INFO L226 Difference]: Without dead ends: 10077 [2022-11-18 18:32:51,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:51,998 INFO L413 NwaCegarLoop]: 7242 mSDtfsCounter, 171 mSDsluCounter, 7026 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 14268 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:51,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 14268 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:32:52,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10077 states. [2022-11-18 18:32:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10077 to 10075. [2022-11-18 18:32:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10075 states, 7234 states have (on average 1.3706110035941388) internal successors, (9915), 7343 states have internal predecessors, (9915), 2399 states have call successors, (2399), 442 states have call predecessors, (2399), 441 states have return successors, (2387), 2387 states have call predecessors, (2387), 2387 states have call successors, (2387) [2022-11-18 18:32:52,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10075 states to 10075 states and 14701 transitions. [2022-11-18 18:32:52,725 INFO L78 Accepts]: Start accepts. Automaton has 10075 states and 14701 transitions. Word has length 95 [2022-11-18 18:32:52,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:52,726 INFO L495 AbstractCegarLoop]: Abstraction has 10075 states and 14701 transitions. [2022-11-18 18:32:52,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 10075 states and 14701 transitions. [2022-11-18 18:32:52,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-18 18:32:52,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:52,728 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:52,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:52,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:52,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:52,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:52,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1149584556, now seen corresponding path program 1 times [2022-11-18 18:32:52,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:52,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023405433] [2022-11-18 18:32:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:52,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:32:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:32:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:32:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:32:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:32:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:32:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:32:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:32:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:32:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:32:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:32:54,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:54,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023405433] [2022-11-18 18:32:54,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023405433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:54,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462383937] [2022-11-18 18:32:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:54,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:54,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:54,695 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:54,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:32:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:56,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 3962 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:32:56,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:32:56,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:56,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462383937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:56,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:56,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:32:56,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252513986] [2022-11-18 18:32:56,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:56,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:56,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:56,964 INFO L87 Difference]: Start difference. First operand 10075 states and 14701 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:57,659 INFO L93 Difference]: Finished difference Result 10077 states and 14702 transitions. [2022-11-18 18:32:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:57,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 96 [2022-11-18 18:32:57,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:57,702 INFO L225 Difference]: With dead ends: 10077 [2022-11-18 18:32:57,702 INFO L226 Difference]: Without dead ends: 10074 [2022-11-18 18:32:57,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:57,712 INFO L413 NwaCegarLoop]: 7240 mSDtfsCounter, 7183 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7183 SdHoareTripleChecker+Valid, 7240 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:57,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7183 Valid, 7240 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:32:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10074 states. [2022-11-18 18:32:58,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10074 to 10074. [2022-11-18 18:32:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10074 states, 7234 states have (on average 1.3704727674868675) internal successors, (9914), 7342 states have internal predecessors, (9914), 2398 states have call successors, (2398), 442 states have call predecessors, (2398), 441 states have return successors, (2387), 2387 states have call predecessors, (2387), 2387 states have call successors, (2387) [2022-11-18 18:32:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10074 states to 10074 states and 14699 transitions. [2022-11-18 18:32:58,444 INFO L78 Accepts]: Start accepts. Automaton has 10074 states and 14699 transitions. Word has length 96 [2022-11-18 18:32:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:58,444 INFO L495 AbstractCegarLoop]: Abstraction has 10074 states and 14699 transitions. [2022-11-18 18:32:58,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:32:58,444 INFO L276 IsEmpty]: Start isEmpty. Operand 10074 states and 14699 transitions. [2022-11-18 18:32:58,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 18:32:58,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:58,446 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:58,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:58,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:32:58,648 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:58,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1279441558, now seen corresponding path program 1 times [2022-11-18 18:32:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:58,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664090253] [2022-11-18 18:32:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:58,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:59,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:32:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:33:00,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:00,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664090253] [2022-11-18 18:33:00,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664090253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:00,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207454941] [2022-11-18 18:33:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:00,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:00,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:00,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:00,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:33:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 3964 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:33:02,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:33:02,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:02,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207454941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:02,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:02,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:33:02,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93010163] [2022-11-18 18:33:02,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:02,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:33:02,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:33:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:02,444 INFO L87 Difference]: Start difference. First operand 10074 states and 14699 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:02,938 INFO L93 Difference]: Finished difference Result 10076 states and 14700 transitions. [2022-11-18 18:33:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:33:02,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 97 [2022-11-18 18:33:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:02,972 INFO L225 Difference]: With dead ends: 10076 [2022-11-18 18:33:02,972 INFO L226 Difference]: Without dead ends: 10073 [2022-11-18 18:33:02,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:02,981 INFO L413 NwaCegarLoop]: 7238 mSDtfsCounter, 7180 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7180 SdHoareTripleChecker+Valid, 7238 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:02,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7180 Valid, 7238 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10073 states. [2022-11-18 18:33:03,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10073 to 10073. [2022-11-18 18:33:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10073 states, 7234 states have (on average 1.3703345313795963) internal successors, (9913), 7341 states have internal predecessors, (9913), 2397 states have call successors, (2397), 442 states have call predecessors, (2397), 441 states have return successors, (2387), 2387 states have call predecessors, (2387), 2387 states have call successors, (2387) [2022-11-18 18:33:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10073 states to 10073 states and 14697 transitions. [2022-11-18 18:33:03,788 INFO L78 Accepts]: Start accepts. Automaton has 10073 states and 14697 transitions. Word has length 97 [2022-11-18 18:33:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:03,789 INFO L495 AbstractCegarLoop]: Abstraction has 10073 states and 14697 transitions. [2022-11-18 18:33:03,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10073 states and 14697 transitions. [2022-11-18 18:33:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-18 18:33:03,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:03,790 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:03,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:03,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:33:03,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1010036457, now seen corresponding path program 1 times [2022-11-18 18:33:03,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:03,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326852845] [2022-11-18 18:33:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:03,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:33:05,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:05,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326852845] [2022-11-18 18:33:05,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326852845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:05,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793999108] [2022-11-18 18:33:05,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:05,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:05,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:05,385 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:05,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:33:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:07,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 3966 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:33:07,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:33:07,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:07,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793999108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:07,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:07,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:33:07,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096320581] [2022-11-18 18:33:07,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:07,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:33:07,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:07,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:33:07,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:07,497 INFO L87 Difference]: Start difference. First operand 10073 states and 14697 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:08,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:08,057 INFO L93 Difference]: Finished difference Result 10075 states and 14698 transitions. [2022-11-18 18:33:08,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:33:08,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 98 [2022-11-18 18:33:08,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:08,084 INFO L225 Difference]: With dead ends: 10075 [2022-11-18 18:33:08,084 INFO L226 Difference]: Without dead ends: 10072 [2022-11-18 18:33:08,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:08,090 INFO L413 NwaCegarLoop]: 7236 mSDtfsCounter, 7177 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7177 SdHoareTripleChecker+Valid, 7236 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:08,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7177 Valid, 7236 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2022-11-18 18:33:08,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 10072. [2022-11-18 18:33:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10072 states, 7234 states have (on average 1.3701962952723252) internal successors, (9912), 7340 states have internal predecessors, (9912), 2396 states have call successors, (2396), 442 states have call predecessors, (2396), 441 states have return successors, (2387), 2387 states have call predecessors, (2387), 2387 states have call successors, (2387) [2022-11-18 18:33:08,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10072 states to 10072 states and 14695 transitions. [2022-11-18 18:33:08,753 INFO L78 Accepts]: Start accepts. Automaton has 10072 states and 14695 transitions. Word has length 98 [2022-11-18 18:33:08,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:08,753 INFO L495 AbstractCegarLoop]: Abstraction has 10072 states and 14695 transitions. [2022-11-18 18:33:08,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:08,753 INFO L276 IsEmpty]: Start isEmpty. Operand 10072 states and 14695 transitions. [2022-11-18 18:33:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-18 18:33:08,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:08,755 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:08,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:08,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 18:33:08,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1248408051, now seen corresponding path program 1 times [2022-11-18 18:33:08,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:08,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010371784] [2022-11-18 18:33:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:08,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:33:10,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:10,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010371784] [2022-11-18 18:33:10,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010371784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:10,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098585304] [2022-11-18 18:33:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:10,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:10,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:10,396 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:10,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:33:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:12,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 3968 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:33:12,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:33:12,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:12,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098585304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:12,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:12,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:33:12,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154653846] [2022-11-18 18:33:12,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:12,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:33:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:12,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:33:12,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:12,584 INFO L87 Difference]: Start difference. First operand 10072 states and 14695 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:13,199 INFO L93 Difference]: Finished difference Result 11461 states and 16470 transitions. [2022-11-18 18:33:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:33:13,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 99 [2022-11-18 18:33:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:13,233 INFO L225 Difference]: With dead ends: 11461 [2022-11-18 18:33:13,233 INFO L226 Difference]: Without dead ends: 11457 [2022-11-18 18:33:13,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:13,241 INFO L413 NwaCegarLoop]: 7382 mSDtfsCounter, 7101 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7101 SdHoareTripleChecker+Valid, 8310 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:13,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7101 Valid, 8310 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:13,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11457 states. [2022-11-18 18:33:13,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11457 to 11454. [2022-11-18 18:33:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11454 states, 8188 states have (on average 1.3542989741084515) internal successors, (11089), 8302 states have internal predecessors, (11089), 2690 states have call successors, (2690), 576 states have call predecessors, (2690), 575 states have return successors, (2683), 2683 states have call predecessors, (2683), 2683 states have call successors, (2683) [2022-11-18 18:33:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11454 states to 11454 states and 16462 transitions. [2022-11-18 18:33:14,017 INFO L78 Accepts]: Start accepts. Automaton has 11454 states and 16462 transitions. Word has length 99 [2022-11-18 18:33:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:14,018 INFO L495 AbstractCegarLoop]: Abstraction has 11454 states and 16462 transitions. [2022-11-18 18:33:14,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 11454 states and 16462 transitions. [2022-11-18 18:33:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-18 18:33:14,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:14,020 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:14,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:14,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:14,242 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:14,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash -47988006, now seen corresponding path program 1 times [2022-11-18 18:33:14,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:14,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379042071] [2022-11-18 18:33:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:14,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:33:15,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:15,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379042071] [2022-11-18 18:33:15,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379042071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:15,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196601264] [2022-11-18 18:33:15,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:15,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:15,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:15,457 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:15,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:33:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:17,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 3970 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:33:17,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:33:17,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:17,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196601264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:17,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:17,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:33:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983479600] [2022-11-18 18:33:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:17,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:33:17,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:33:17,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:17,721 INFO L87 Difference]: Start difference. First operand 11454 states and 16462 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:18,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:18,343 INFO L93 Difference]: Finished difference Result 11456 states and 16463 transitions. [2022-11-18 18:33:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:33:18,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 100 [2022-11-18 18:33:18,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:18,379 INFO L225 Difference]: With dead ends: 11456 [2022-11-18 18:33:18,379 INFO L226 Difference]: Without dead ends: 11453 [2022-11-18 18:33:18,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:18,389 INFO L413 NwaCegarLoop]: 7230 mSDtfsCounter, 7169 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7169 SdHoareTripleChecker+Valid, 7230 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:18,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7169 Valid, 7230 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11453 states. [2022-11-18 18:33:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11453 to 11453. [2022-11-18 18:33:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11453 states, 8188 states have (on average 1.3541768441621886) internal successors, (11088), 8301 states have internal predecessors, (11088), 2689 states have call successors, (2689), 576 states have call predecessors, (2689), 575 states have return successors, (2683), 2683 states have call predecessors, (2683), 2683 states have call successors, (2683) [2022-11-18 18:33:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 16460 transitions. [2022-11-18 18:33:19,298 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 16460 transitions. Word has length 100 [2022-11-18 18:33:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:19,299 INFO L495 AbstractCegarLoop]: Abstraction has 11453 states and 16460 transitions. [2022-11-18 18:33:19,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 16460 transitions. [2022-11-18 18:33:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 18:33:19,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:19,301 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:19,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:19,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:19,503 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1489667408, now seen corresponding path program 1 times [2022-11-18 18:33:19,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:19,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142305695] [2022-11-18 18:33:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:19,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:33:20,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:20,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142305695] [2022-11-18 18:33:20,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142305695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:20,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639777477] [2022-11-18 18:33:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:20,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:20,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:20,847 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:20,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:33:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:22,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 3972 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:33:22,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:33:23,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:23,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639777477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:23,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:23,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:33:23,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460569386] [2022-11-18 18:33:23,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:23,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:33:23,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:33:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:23,003 INFO L87 Difference]: Start difference. First operand 11453 states and 16460 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:23,628 INFO L93 Difference]: Finished difference Result 11455 states and 16461 transitions. [2022-11-18 18:33:23,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:33:23,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 101 [2022-11-18 18:33:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:23,659 INFO L225 Difference]: With dead ends: 11455 [2022-11-18 18:33:23,659 INFO L226 Difference]: Without dead ends: 11452 [2022-11-18 18:33:23,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:23,664 INFO L413 NwaCegarLoop]: 7228 mSDtfsCounter, 7166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7166 SdHoareTripleChecker+Valid, 7228 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:23,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7166 Valid, 7228 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11452 states. [2022-11-18 18:33:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11452 to 11452. [2022-11-18 18:33:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11452 states, 8188 states have (on average 1.3540547142159258) internal successors, (11087), 8300 states have internal predecessors, (11087), 2688 states have call successors, (2688), 576 states have call predecessors, (2688), 575 states have return successors, (2683), 2683 states have call predecessors, (2683), 2683 states have call successors, (2683) [2022-11-18 18:33:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11452 states to 11452 states and 16458 transitions. [2022-11-18 18:33:24,340 INFO L78 Accepts]: Start accepts. Automaton has 11452 states and 16458 transitions. Word has length 101 [2022-11-18 18:33:24,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:24,341 INFO L495 AbstractCegarLoop]: Abstraction has 11452 states and 16458 transitions. [2022-11-18 18:33:24,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:24,341 INFO L276 IsEmpty]: Start isEmpty. Operand 11452 states and 16458 transitions. [2022-11-18 18:33:24,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 18:33:24,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:24,342 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:24,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:24,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:33:24,543 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:24,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:24,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1062916253, now seen corresponding path program 1 times [2022-11-18 18:33:24,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:24,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665951264] [2022-11-18 18:33:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:24,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:33:25,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:25,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665951264] [2022-11-18 18:33:25,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665951264] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:25,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339019903] [2022-11-18 18:33:25,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:25,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:25,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:25,916 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:25,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:33:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:27,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 3974 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:33:27,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:33:28,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:28,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339019903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:28,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:28,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:33:28,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924437728] [2022-11-18 18:33:28,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:28,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:33:28,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:28,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:33:28,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:28,126 INFO L87 Difference]: Start difference. First operand 11452 states and 16458 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:28,812 INFO L93 Difference]: Finished difference Result 11454 states and 16459 transitions. [2022-11-18 18:33:28,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:33:28,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 102 [2022-11-18 18:33:28,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:28,844 INFO L225 Difference]: With dead ends: 11454 [2022-11-18 18:33:28,845 INFO L226 Difference]: Without dead ends: 11451 [2022-11-18 18:33:28,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:28,852 INFO L413 NwaCegarLoop]: 7226 mSDtfsCounter, 7163 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7163 SdHoareTripleChecker+Valid, 7226 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:28,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7163 Valid, 7226 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:33:28,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11451 states. [2022-11-18 18:33:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11451 to 11451. [2022-11-18 18:33:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11451 states, 8188 states have (on average 1.353932584269663) internal successors, (11086), 8299 states have internal predecessors, (11086), 2687 states have call successors, (2687), 576 states have call predecessors, (2687), 575 states have return successors, (2683), 2683 states have call predecessors, (2683), 2683 states have call successors, (2683) [2022-11-18 18:33:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11451 states to 11451 states and 16456 transitions. [2022-11-18 18:33:29,796 INFO L78 Accepts]: Start accepts. Automaton has 11451 states and 16456 transitions. Word has length 102 [2022-11-18 18:33:29,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:29,796 INFO L495 AbstractCegarLoop]: Abstraction has 11451 states and 16456 transitions. [2022-11-18 18:33:29,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 11451 states and 16456 transitions. [2022-11-18 18:33:29,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 18:33:29,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:29,798 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:29,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:30,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:33:30,001 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1411364013, now seen corresponding path program 1 times [2022-11-18 18:33:30,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:30,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142241884] [2022-11-18 18:33:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:30,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:30,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:31,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:31,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:33:31,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:31,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142241884] [2022-11-18 18:33:31,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142241884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:31,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64466568] [2022-11-18 18:33:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:31,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:31,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:31,168 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:31,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:33:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:32,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 3976 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:33:32,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:33:33,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:33,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64466568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:33,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:33,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 18:33:33,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722749610] [2022-11-18 18:33:33,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:33,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:33:33,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:33,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:33:33,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:33,424 INFO L87 Difference]: Start difference. First operand 11451 states and 16456 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:34,231 INFO L93 Difference]: Finished difference Result 11453 states and 16457 transitions. [2022-11-18 18:33:34,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:33:34,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 103 [2022-11-18 18:33:34,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:34,272 INFO L225 Difference]: With dead ends: 11453 [2022-11-18 18:33:34,272 INFO L226 Difference]: Without dead ends: 11429 [2022-11-18 18:33:34,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:33:34,279 INFO L413 NwaCegarLoop]: 7225 mSDtfsCounter, 7160 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7160 SdHoareTripleChecker+Valid, 7225 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:34,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7160 Valid, 7225 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:33:34,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11429 states. [2022-11-18 18:33:35,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11429 to 11429. [2022-11-18 18:33:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11429 states, 8169 states have (on average 1.3542661280450483) internal successors, (11063), 8279 states have internal predecessors, (11063), 2685 states have call successors, (2685), 575 states have call predecessors, (2685), 574 states have return successors, (2682), 2682 states have call predecessors, (2682), 2682 states have call successors, (2682) [2022-11-18 18:33:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11429 states to 11429 states and 16430 transitions. [2022-11-18 18:33:35,174 INFO L78 Accepts]: Start accepts. Automaton has 11429 states and 16430 transitions. Word has length 103 [2022-11-18 18:33:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:35,175 INFO L495 AbstractCegarLoop]: Abstraction has 11429 states and 16430 transitions. [2022-11-18 18:33:35,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:33:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 11429 states and 16430 transitions. [2022-11-18 18:33:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 18:33:35,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:35,177 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2022-11-18 18:33:35,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:35,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:33:35,378 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:35,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:35,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2142177319, now seen corresponding path program 1 times [2022-11-18 18:33:35,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:35,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202819611] [2022-11-18 18:33:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:35,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 18:33:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 18:33:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 18:33:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:33:36,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:36,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202819611] [2022-11-18 18:33:36,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202819611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:36,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645341805] [2022-11-18 18:33:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:36,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:36,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:36,865 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:36,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:33:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:38,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 4114 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:33:38,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:33:38,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:38,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645341805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:38,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:38,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-18 18:33:38,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953058380] [2022-11-18 18:33:38,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:38,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:33:38,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:38,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:33:38,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:33:38,789 INFO L87 Difference]: Start difference. First operand 11429 states and 16430 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 18:33:39,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:39,966 INFO L93 Difference]: Finished difference Result 23176 states and 33380 transitions. [2022-11-18 18:33:39,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:33:39,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-11-18 18:33:39,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:40,003 INFO L225 Difference]: With dead ends: 23176 [2022-11-18 18:33:40,003 INFO L226 Difference]: Without dead ends: 11750 [2022-11-18 18:33:40,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:33:40,035 INFO L413 NwaCegarLoop]: 7372 mSDtfsCounter, 131 mSDsluCounter, 14588 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 21960 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:40,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 21960 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11750 states. [2022-11-18 18:33:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11750 to 11433. [2022-11-18 18:33:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11433 states, 8173 states have (on average 1.3540927444023003) internal successors, (11067), 8283 states have internal predecessors, (11067), 2685 states have call successors, (2685), 575 states have call predecessors, (2685), 574 states have return successors, (2682), 2682 states have call predecessors, (2682), 2682 states have call successors, (2682) [2022-11-18 18:33:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11433 states to 11433 states and 16434 transitions. [2022-11-18 18:33:40,871 INFO L78 Accepts]: Start accepts. Automaton has 11433 states and 16434 transitions. Word has length 123 [2022-11-18 18:33:40,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:40,872 INFO L495 AbstractCegarLoop]: Abstraction has 11433 states and 16434 transitions. [2022-11-18 18:33:40,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 18:33:40,872 INFO L276 IsEmpty]: Start isEmpty. Operand 11433 states and 16434 transitions. [2022-11-18 18:33:40,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 18:33:40,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:40,874 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2022-11-18 18:33:40,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:41,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:33:41,076 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:41,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1894030825, now seen corresponding path program 1 times [2022-11-18 18:33:41,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:41,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601064892] [2022-11-18 18:33:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:41,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 18:33:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 18:33:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 18:33:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:33:42,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:42,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601064892] [2022-11-18 18:33:42,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601064892] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:42,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311795090] [2022-11-18 18:33:42,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:42,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:42,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:42,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:42,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:33:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:44,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 4115 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:33:44,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 18:33:45,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:45,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311795090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:45,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:45,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-11-18 18:33:45,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293230764] [2022-11-18 18:33:45,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:45,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:33:45,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:45,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:33:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:33:45,098 INFO L87 Difference]: Start difference. First operand 11433 states and 16434 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 18:33:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:46,257 INFO L93 Difference]: Finished difference Result 22869 states and 32873 transitions. [2022-11-18 18:33:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:33:46,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-11-18 18:33:46,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:46,297 INFO L225 Difference]: With dead ends: 22869 [2022-11-18 18:33:46,297 INFO L226 Difference]: Without dead ends: 11429 [2022-11-18 18:33:46,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:33:46,339 INFO L413 NwaCegarLoop]: 7203 mSDtfsCounter, 10 mSDsluCounter, 28800 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36003 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:46,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 36003 Invalid, 28 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:33:46,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11429 states. [2022-11-18 18:33:47,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11429 to 11429. [2022-11-18 18:33:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11429 states, 8169 states have (on average 1.3537764720284) internal successors, (11059), 8279 states have internal predecessors, (11059), 2685 states have call successors, (2685), 575 states have call predecessors, (2685), 574 states have return successors, (2682), 2682 states have call predecessors, (2682), 2682 states have call successors, (2682) [2022-11-18 18:33:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11429 states to 11429 states and 16426 transitions. [2022-11-18 18:33:47,332 INFO L78 Accepts]: Start accepts. Automaton has 11429 states and 16426 transitions. Word has length 123 [2022-11-18 18:33:47,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:47,332 INFO L495 AbstractCegarLoop]: Abstraction has 11429 states and 16426 transitions. [2022-11-18 18:33:47,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 18:33:47,333 INFO L276 IsEmpty]: Start isEmpty. Operand 11429 states and 16426 transitions. [2022-11-18 18:33:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 18:33:47,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:47,335 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2022-11-18 18:33:47,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:47,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:47,554 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:47,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:47,554 INFO L85 PathProgramCache]: Analyzing trace with hash -413663426, now seen corresponding path program 1 times [2022-11-18 18:33:47,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:47,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245395438] [2022-11-18 18:33:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 18:33:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 18:33:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 18:33:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 18:33:48,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:48,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245395438] [2022-11-18 18:33:48,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245395438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:48,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110505091] [2022-11-18 18:33:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:48,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:48,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:48,875 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:48,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 18:33:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:50,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 4146 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:33:50,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-18 18:33:50,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:50,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110505091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:50,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:50,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-18 18:33:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803627822] [2022-11-18 18:33:50,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:50,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:33:50,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:50,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:33:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:33:50,835 INFO L87 Difference]: Start difference. First operand 11429 states and 16426 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 18:33:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:51,594 INFO L93 Difference]: Finished difference Result 11431 states and 16427 transitions. [2022-11-18 18:33:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:33:51,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-11-18 18:33:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:51,624 INFO L225 Difference]: With dead ends: 11431 [2022-11-18 18:33:51,624 INFO L226 Difference]: Without dead ends: 11428 [2022-11-18 18:33:51,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:33:51,631 INFO L413 NwaCegarLoop]: 7215 mSDtfsCounter, 7005 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7005 SdHoareTripleChecker+Valid, 7402 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:51,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7005 Valid, 7402 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:51,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11428 states. [2022-11-18 18:33:52,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11428 to 11428. [2022-11-18 18:33:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11428 states, 8169 states have (on average 1.353531644020076) internal successors, (11057), 8278 states have internal predecessors, (11057), 2684 states have call successors, (2684), 575 states have call predecessors, (2684), 574 states have return successors, (2682), 2682 states have call predecessors, (2682), 2682 states have call successors, (2682) [2022-11-18 18:33:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11428 states to 11428 states and 16423 transitions. [2022-11-18 18:33:52,378 INFO L78 Accepts]: Start accepts. Automaton has 11428 states and 16423 transitions. Word has length 125 [2022-11-18 18:33:52,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:52,378 INFO L495 AbstractCegarLoop]: Abstraction has 11428 states and 16423 transitions. [2022-11-18 18:33:52,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 18:33:52,378 INFO L276 IsEmpty]: Start isEmpty. Operand 11428 states and 16423 transitions. [2022-11-18 18:33:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-18 18:33:52,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:52,382 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:52,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:52,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:52,583 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:52,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:52,583 INFO L85 PathProgramCache]: Analyzing trace with hash -953943588, now seen corresponding path program 1 times [2022-11-18 18:33:52,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:52,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331859872] [2022-11-18 18:33:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:52,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:53,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 18:33:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 18:33:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 18:33:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:33:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-18 18:33:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:33:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 18:33:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 18:33:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 18:33:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-18 18:33:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-18 18:33:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:33:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-18 18:33:54,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331859872] [2022-11-18 18:33:54,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331859872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247683376] [2022-11-18 18:33:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:54,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:54,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:54,358 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:54,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 18:33:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:56,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 4676 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:33:56,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-18 18:33:56,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:33:56,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247683376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:56,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:33:56,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-18 18:33:56,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798798992] [2022-11-18 18:33:56,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:56,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:33:56,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:56,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:33:56,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:33:56,408 INFO L87 Difference]: Start difference. First operand 11428 states and 16423 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 18:33:57,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:57,448 INFO L93 Difference]: Finished difference Result 25830 states and 36595 transitions. [2022-11-18 18:33:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:33:57,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 198 [2022-11-18 18:33:57,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:57,489 INFO L225 Difference]: With dead ends: 25830 [2022-11-18 18:33:57,489 INFO L226 Difference]: Without dead ends: 14405 [2022-11-18 18:33:57,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:33:57,515 INFO L413 NwaCegarLoop]: 8009 mSDtfsCounter, 7080 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7080 SdHoareTripleChecker+Valid, 9479 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:57,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7080 Valid, 9479 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:57,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14405 states. [2022-11-18 18:33:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14405 to 14401. [2022-11-18 18:33:58,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14401 states, 10161 states have (on average 1.326444247613424) internal successors, (13478), 10302 states have internal predecessors, (13478), 3347 states have call successors, (3347), 893 states have call predecessors, (3347), 892 states have return successors, (3345), 3345 states have call predecessors, (3345), 3345 states have call successors, (3345) [2022-11-18 18:33:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14401 states to 14401 states and 20170 transitions. [2022-11-18 18:33:58,483 INFO L78 Accepts]: Start accepts. Automaton has 14401 states and 20170 transitions. Word has length 198 [2022-11-18 18:33:58,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:58,483 INFO L495 AbstractCegarLoop]: Abstraction has 14401 states and 20170 transitions. [2022-11-18 18:33:58,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 18:33:58,484 INFO L276 IsEmpty]: Start isEmpty. Operand 14401 states and 20170 transitions. [2022-11-18 18:33:58,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 18:33:58,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:58,489 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:58,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:58,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 18:33:58,703 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:33:58,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1857240795, now seen corresponding path program 1 times [2022-11-18 18:33:58,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:58,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723925817] [2022-11-18 18:33:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:33:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:33:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:33:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:33:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:33:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:33:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:33:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 18:34:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 18:34:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 18:34:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 18:34:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-18 18:34:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-18 18:34:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-18 18:34:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-18 18:34:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:34:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-18 18:34:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:34:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 18:34:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 18:34:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-18 18:34:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-11-18 18:34:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-11-18 18:34:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:34:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-18 18:34:00,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:00,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723925817] [2022-11-18 18:34:00,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723925817] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:00,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375533247] [2022-11-18 18:34:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:00,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:00,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:00,182 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:00,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 18:34:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:02,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 4857 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:34:02,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-18 18:34:02,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:02,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375533247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:02,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:34:02,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-18 18:34:02,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628812610] [2022-11-18 18:34:02,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:02,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:34:02,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:02,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:34:02,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:34:02,325 INFO L87 Difference]: Start difference. First operand 14401 states and 20170 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-18 18:34:03,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:03,261 INFO L93 Difference]: Finished difference Result 14403 states and 20171 transitions. [2022-11-18 18:34:03,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:34:03,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 242 [2022-11-18 18:34:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:03,295 INFO L225 Difference]: With dead ends: 14403 [2022-11-18 18:34:03,295 INFO L226 Difference]: Without dead ends: 14400 [2022-11-18 18:34:03,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:34:03,300 INFO L413 NwaCegarLoop]: 7202 mSDtfsCounter, 146 mSDsluCounter, 7054 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 14256 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:03,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 14256 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:34:03,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14400 states. [2022-11-18 18:34:04,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14400 to 14400. [2022-11-18 18:34:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14400 states, 10161 states have (on average 1.3256569235311486) internal successors, (13470), 10301 states have internal predecessors, (13470), 3346 states have call successors, (3346), 893 states have call predecessors, (3346), 892 states have return successors, (3345), 3345 states have call predecessors, (3345), 3345 states have call successors, (3345) [2022-11-18 18:34:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14400 states to 14400 states and 20161 transitions. [2022-11-18 18:34:04,246 INFO L78 Accepts]: Start accepts. Automaton has 14400 states and 20161 transitions. Word has length 242 [2022-11-18 18:34:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:04,246 INFO L495 AbstractCegarLoop]: Abstraction has 14400 states and 20161 transitions. [2022-11-18 18:34:04,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-18 18:34:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 14400 states and 20161 transitions. [2022-11-18 18:34:04,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2022-11-18 18:34:04,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:04,280 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:04,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:04,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:04,495 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:04,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:04,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1838212805, now seen corresponding path program 1 times [2022-11-18 18:34:04,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:04,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086585951] [2022-11-18 18:34:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:04,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:04,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086585951] [2022-11-18 18:34:04,743 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:34:04,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203640260] [2022-11-18 18:34:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:04,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:04,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:04,747 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:04,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 18:34:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:07,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 6945 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:34:07,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-11-18 18:34:07,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:07,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203640260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:07,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:07,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:34:07,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070441774] [2022-11-18 18:34:07,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:07,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:34:07,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:34:07,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:07,344 INFO L87 Difference]: Start difference. First operand 14400 states and 20161 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2022-11-18 18:34:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:08,291 INFO L93 Difference]: Finished difference Result 28809 states and 40353 transitions. [2022-11-18 18:34:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:34:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 647 [2022-11-18 18:34:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:08,378 INFO L225 Difference]: With dead ends: 28809 [2022-11-18 18:34:08,378 INFO L226 Difference]: Without dead ends: 14412 [2022-11-18 18:34:08,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:08,423 INFO L413 NwaCegarLoop]: 7199 mSDtfsCounter, 1 mSDsluCounter, 7195 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14394 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:08,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14394 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:34:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14412 states. [2022-11-18 18:34:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14412 to 14404. [2022-11-18 18:34:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14404 states, 10165 states have (on average 1.3255287752090508) internal successors, (13474), 10305 states have internal predecessors, (13474), 3346 states have call successors, (3346), 893 states have call predecessors, (3346), 892 states have return successors, (3345), 3345 states have call predecessors, (3345), 3345 states have call successors, (3345) [2022-11-18 18:34:10,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14404 states to 14404 states and 20165 transitions. [2022-11-18 18:34:10,275 INFO L78 Accepts]: Start accepts. Automaton has 14404 states and 20165 transitions. Word has length 647 [2022-11-18 18:34:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:10,276 INFO L495 AbstractCegarLoop]: Abstraction has 14404 states and 20165 transitions. [2022-11-18 18:34:10,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2022-11-18 18:34:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 14404 states and 20165 transitions. [2022-11-18 18:34:10,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-11-18 18:34:10,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:10,314 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:10,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:10,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:10,531 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:10,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:10,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1742753300, now seen corresponding path program 1 times [2022-11-18 18:34:10,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:10,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064300296] [2022-11-18 18:34:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:10,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:10,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064300296] [2022-11-18 18:34:10,944 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:34:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946670864] [2022-11-18 18:34:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:10,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:10,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:10,946 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:10,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 18:34:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:13,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 6995 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:34:13,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-11-18 18:34:13,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:13,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946670864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:13,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:13,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:34:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823621681] [2022-11-18 18:34:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:34:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:13,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:34:13,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:13,598 INFO L87 Difference]: Start difference. First operand 14404 states and 20165 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2022-11-18 18:34:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:14,668 INFO L93 Difference]: Finished difference Result 28829 states and 40383 transitions. [2022-11-18 18:34:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:34:14,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 658 [2022-11-18 18:34:14,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:14,734 INFO L225 Difference]: With dead ends: 28829 [2022-11-18 18:34:14,734 INFO L226 Difference]: Without dead ends: 14428 [2022-11-18 18:34:14,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:14,785 INFO L413 NwaCegarLoop]: 7197 mSDtfsCounter, 5 mSDsluCounter, 7191 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14388 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:14,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14388 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:34:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14428 states. [2022-11-18 18:34:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14428 to 14408. [2022-11-18 18:34:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14408 states, 10169 states have (on average 1.325400727701839) internal successors, (13478), 10309 states have internal predecessors, (13478), 3346 states have call successors, (3346), 893 states have call predecessors, (3346), 892 states have return successors, (3345), 3345 states have call predecessors, (3345), 3345 states have call successors, (3345) [2022-11-18 18:34:15,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14408 states to 14408 states and 20169 transitions. [2022-11-18 18:34:15,985 INFO L78 Accepts]: Start accepts. Automaton has 14408 states and 20169 transitions. Word has length 658 [2022-11-18 18:34:15,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:15,986 INFO L495 AbstractCegarLoop]: Abstraction has 14408 states and 20169 transitions. [2022-11-18 18:34:15,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2022-11-18 18:34:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 14408 states and 20169 transitions. [2022-11-18 18:34:16,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2022-11-18 18:34:16,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:16,017 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:16,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:16,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 18:34:16,219 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:16,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:16,220 INFO L85 PathProgramCache]: Analyzing trace with hash -983767735, now seen corresponding path program 1 times [2022-11-18 18:34:16,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:16,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923593373] [2022-11-18 18:34:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:16,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:16,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:16,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923593373] [2022-11-18 18:34:16,535 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:34:16,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048526839] [2022-11-18 18:34:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:16,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:16,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:16,537 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:16,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 18:34:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:19,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 7002 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:34:19,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-18 18:34:19,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:19,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048526839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:19,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:19,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:34:19,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662043680] [2022-11-18 18:34:19,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:19,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:34:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:19,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:34:19,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:19,266 INFO L87 Difference]: Start difference. First operand 14408 states and 20169 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2022-11-18 18:34:20,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:20,325 INFO L93 Difference]: Finished difference Result 28825 states and 40369 transitions. [2022-11-18 18:34:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:34:20,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) Word has length 662 [2022-11-18 18:34:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:20,395 INFO L225 Difference]: With dead ends: 28825 [2022-11-18 18:34:20,396 INFO L226 Difference]: Without dead ends: 14420 [2022-11-18 18:34:20,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:20,446 INFO L413 NwaCegarLoop]: 7199 mSDtfsCounter, 1 mSDsluCounter, 7194 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14393 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:20,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14393 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:34:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14420 states. [2022-11-18 18:34:21,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14420 to 14412. [2022-11-18 18:34:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14412 states, 10173 states have (on average 1.3252727808905926) internal successors, (13482), 10313 states have internal predecessors, (13482), 3346 states have call successors, (3346), 893 states have call predecessors, (3346), 892 states have return successors, (3345), 3345 states have call predecessors, (3345), 3345 states have call successors, (3345) [2022-11-18 18:34:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14412 states to 14412 states and 20173 transitions. [2022-11-18 18:34:21,837 INFO L78 Accepts]: Start accepts. Automaton has 14412 states and 20173 transitions. Word has length 662 [2022-11-18 18:34:21,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:21,838 INFO L495 AbstractCegarLoop]: Abstraction has 14412 states and 20173 transitions. [2022-11-18 18:34:21,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2022-11-18 18:34:21,839 INFO L276 IsEmpty]: Start isEmpty. Operand 14412 states and 20173 transitions. [2022-11-18 18:34:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-11-18 18:34:21,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:21,888 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:21,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:22,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 18:34:22,112 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:22,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:22,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1255928816, now seen corresponding path program 1 times [2022-11-18 18:34:22,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:22,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939072054] [2022-11-18 18:34:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:22,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:22,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:22,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939072054] [2022-11-18 18:34:22,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:34:22,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920321127] [2022-11-18 18:34:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:22,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:22,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:22,471 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:22,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 18:34:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:25,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 6752 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:34:25,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-18 18:34:25,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:25,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920321127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:25,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:25,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:34:25,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893190547] [2022-11-18 18:34:25,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:25,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:34:25,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:25,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:34:25,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:25,286 INFO L87 Difference]: Start difference. First operand 14412 states and 20173 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-18 18:34:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:26,399 INFO L93 Difference]: Finished difference Result 28823 states and 40349 transitions. [2022-11-18 18:34:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:34:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 491 [2022-11-18 18:34:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:26,451 INFO L225 Difference]: With dead ends: 28823 [2022-11-18 18:34:26,451 INFO L226 Difference]: Without dead ends: 14414 [2022-11-18 18:34:26,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:26,496 INFO L413 NwaCegarLoop]: 7199 mSDtfsCounter, 0 mSDsluCounter, 7194 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14393 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:26,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14393 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:34:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14414 states. [2022-11-18 18:34:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14414 to 14414. [2022-11-18 18:34:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14414 states, 10175 states have (on average 1.3252088452088453) internal successors, (13484), 10315 states have internal predecessors, (13484), 3346 states have call successors, (3346), 893 states have call predecessors, (3346), 892 states have return successors, (3345), 3345 states have call predecessors, (3345), 3345 states have call successors, (3345) [2022-11-18 18:34:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14414 states to 14414 states and 20175 transitions. [2022-11-18 18:34:27,707 INFO L78 Accepts]: Start accepts. Automaton has 14414 states and 20175 transitions. Word has length 491 [2022-11-18 18:34:27,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:27,707 INFO L495 AbstractCegarLoop]: Abstraction has 14414 states and 20175 transitions. [2022-11-18 18:34:27,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-18 18:34:27,707 INFO L276 IsEmpty]: Start isEmpty. Operand 14414 states and 20175 transitions. [2022-11-18 18:34:27,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2022-11-18 18:34:27,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:27,732 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:27,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:27,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 18:34:27,932 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1327364126, now seen corresponding path program 1 times [2022-11-18 18:34:27,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:27,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260473897] [2022-11-18 18:34:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:27,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:28,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:28,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260473897] [2022-11-18 18:34:28,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:34:28,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551178593] [2022-11-18 18:34:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:28,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:28,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:28,191 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:28,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 18:34:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:31,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 7729 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:34:31,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2022-11-18 18:34:31,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:31,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551178593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:31,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:31,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:34:31,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516356620] [2022-11-18 18:34:31,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:31,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:31,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:31,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:31,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:31,127 INFO L87 Difference]: Start difference. First operand 14414 states and 20175 transitions. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 2 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-18 18:34:33,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:33,435 INFO L93 Difference]: Finished difference Result 40117 states and 56560 transitions. [2022-11-18 18:34:33,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:34:33,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 2 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 767 [2022-11-18 18:34:33,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:33,535 INFO L225 Difference]: With dead ends: 40117 [2022-11-18 18:34:33,535 INFO L226 Difference]: Without dead ends: 25706 [2022-11-18 18:34:33,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:34:33,581 INFO L413 NwaCegarLoop]: 14274 mSDtfsCounter, 7194 mSDsluCounter, 21350 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7194 SdHoareTripleChecker+Valid, 35624 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:33,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7194 Valid, 35624 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:34:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25706 states. [2022-11-18 18:34:34,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25706 to 14418. [2022-11-18 18:34:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14418 states, 10179 states have (on average 1.3250810492189802) internal successors, (13488), 10319 states have internal predecessors, (13488), 3346 states have call successors, (3346), 893 states have call predecessors, (3346), 892 states have return successors, (3345), 3345 states have call predecessors, (3345), 3345 states have call successors, (3345) [2022-11-18 18:34:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14418 states to 14418 states and 20179 transitions. [2022-11-18 18:34:35,000 INFO L78 Accepts]: Start accepts. Automaton has 14418 states and 20179 transitions. Word has length 767 [2022-11-18 18:34:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:35,001 INFO L495 AbstractCegarLoop]: Abstraction has 14418 states and 20179 transitions. [2022-11-18 18:34:35,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 2 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-18 18:34:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 14418 states and 20179 transitions. [2022-11-18 18:34:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-11-18 18:34:35,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:35,025 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:35,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:35,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 18:34:35,226 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:35,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:35,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1252453638, now seen corresponding path program 1 times [2022-11-18 18:34:35,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:35,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444405845] [2022-11-18 18:34:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:35,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:35,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:35,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444405845] [2022-11-18 18:34:35,512 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:34:35,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156980550] [2022-11-18 18:34:35,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:35,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:35,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:35,515 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:35,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 18:34:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:38,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 6764 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:34:38,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-18 18:34:39,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:39,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156980550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:39,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:39,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:34:39,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944374139] [2022-11-18 18:34:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:39,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:34:39,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:34:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:39,474 INFO L87 Difference]: Start difference. First operand 14418 states and 20179 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-18 18:34:40,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:40,902 INFO L93 Difference]: Finished difference Result 28833 states and 40357 transitions. [2022-11-18 18:34:40,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:34:40,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 495 [2022-11-18 18:34:40,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:40,956 INFO L225 Difference]: With dead ends: 28833 [2022-11-18 18:34:40,956 INFO L226 Difference]: Without dead ends: 14418 [2022-11-18 18:34:40,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:40,996 INFO L413 NwaCegarLoop]: 7198 mSDtfsCounter, 6973 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6973 SdHoareTripleChecker+Valid, 7198 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:40,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6973 Valid, 7198 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:34:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14418 states. [2022-11-18 18:34:42,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14418 to 14418. [2022-11-18 18:34:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14418 states, 10179 states have (on average 1.3248845662638766) internal successors, (13486), 10319 states have internal predecessors, (13486), 3346 states have call successors, (3346), 893 states have call predecessors, (3346), 892 states have return successors, (3345), 3345 states have call predecessors, (3345), 3345 states have call successors, (3345) [2022-11-18 18:34:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14418 states to 14418 states and 20177 transitions. [2022-11-18 18:34:42,455 INFO L78 Accepts]: Start accepts. Automaton has 14418 states and 20177 transitions. Word has length 495 [2022-11-18 18:34:42,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:42,456 INFO L495 AbstractCegarLoop]: Abstraction has 14418 states and 20177 transitions. [2022-11-18 18:34:42,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-18 18:34:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 14418 states and 20177 transitions. [2022-11-18 18:34:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-11-18 18:34:42,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:42,492 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:42,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:42,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 18:34:42,693 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2051204573, now seen corresponding path program 1 times [2022-11-18 18:34:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:42,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91940938] [2022-11-18 18:34:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:42,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:42,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:42,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91940938] [2022-11-18 18:34:42,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:34:42,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505603680] [2022-11-18 18:34:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:42,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:42,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:42,979 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:42,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 18:34:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:45,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 6913 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:34:45,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-18 18:34:45,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:45,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505603680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:45,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:45,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:34:45,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121044824] [2022-11-18 18:34:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:45,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:45,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:45,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:45,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:45,866 INFO L87 Difference]: Start difference. First operand 14418 states and 20177 transitions. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-18 18:34:47,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:47,814 INFO L93 Difference]: Finished difference Result 28837 states and 40359 transitions. [2022-11-18 18:34:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:34:47,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 499 [2022-11-18 18:34:47,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:47,877 INFO L225 Difference]: With dead ends: 28837 [2022-11-18 18:34:47,877 INFO L226 Difference]: Without dead ends: 14422 [2022-11-18 18:34:47,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:34:47,925 INFO L413 NwaCegarLoop]: 7197 mSDtfsCounter, 1 mSDsluCounter, 14386 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21583 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:47,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21583 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:34:47,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14422 states. [2022-11-18 18:34:49,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14422 to 14420. [2022-11-18 18:34:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14420 states, 10181 states have (on average 1.3248207445241136) internal successors, (13488), 10321 states have internal predecessors, (13488), 3346 states have call successors, (3346), 893 states have call predecessors, (3346), 892 states have return successors, (3345), 3345 states have call predecessors, (3345), 3345 states have call successors, (3345) [2022-11-18 18:34:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14420 states to 14420 states and 20179 transitions. [2022-11-18 18:34:49,405 INFO L78 Accepts]: Start accepts. Automaton has 14420 states and 20179 transitions. Word has length 499 [2022-11-18 18:34:49,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:49,406 INFO L495 AbstractCegarLoop]: Abstraction has 14420 states and 20179 transitions. [2022-11-18 18:34:49,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-18 18:34:49,406 INFO L276 IsEmpty]: Start isEmpty. Operand 14420 states and 20179 transitions. [2022-11-18 18:34:49,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-11-18 18:34:49,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:49,439 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:49,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:49,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 18:34:49,655 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:49,655 INFO L85 PathProgramCache]: Analyzing trace with hash -287990047, now seen corresponding path program 1 times [2022-11-18 18:34:49,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:49,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756081809] [2022-11-18 18:34:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:49,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:49,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:49,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756081809] [2022-11-18 18:34:49,929 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:34:49,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198560676] [2022-11-18 18:34:49,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:49,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:49,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:49,931 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:49,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 18:34:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:52,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 6918 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:34:52,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-18 18:34:52,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:52,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198560676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:52,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:52,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:34:52,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821643890] [2022-11-18 18:34:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:52,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:34:52,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:52,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:34:52,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:34:52,881 INFO L87 Difference]: Start difference. First operand 14420 states and 20179 transitions. Second operand has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 5 states have internal predecessors, (245), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-18 18:34:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:54,628 INFO L93 Difference]: Finished difference Result 28863 states and 40397 transitions. [2022-11-18 18:34:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:34:54,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 5 states have internal predecessors, (245), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) Word has length 499 [2022-11-18 18:34:54,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:54,675 INFO L225 Difference]: With dead ends: 28863 [2022-11-18 18:34:54,675 INFO L226 Difference]: Without dead ends: 14446 [2022-11-18 18:34:54,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:34:54,712 INFO L413 NwaCegarLoop]: 7201 mSDtfsCounter, 5 mSDsluCounter, 28754 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 35955 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:54,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 35955 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:34:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14446 states. [2022-11-18 18:34:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14446 to 14430. [2022-11-18 18:34:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14430 states, 10189 states have (on average 1.3245657081165962) internal successors, (13496), 10329 states have internal predecessors, (13496), 3346 states have call successors, (3346), 893 states have call predecessors, (3346), 894 states have return successors, (3349), 3347 states have call predecessors, (3349), 3345 states have call successors, (3349) [2022-11-18 18:34:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14430 states to 14430 states and 20191 transitions. [2022-11-18 18:34:56,098 INFO L78 Accepts]: Start accepts. Automaton has 14430 states and 20191 transitions. Word has length 499 [2022-11-18 18:34:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:56,099 INFO L495 AbstractCegarLoop]: Abstraction has 14430 states and 20191 transitions. [2022-11-18 18:34:56,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 5 states have internal predecessors, (245), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-18 18:34:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 14430 states and 20191 transitions. [2022-11-18 18:34:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2022-11-18 18:34:56,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:56,118 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:56,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:56,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:56,329 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:56,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:56,329 INFO L85 PathProgramCache]: Analyzing trace with hash -947857191, now seen corresponding path program 1 times [2022-11-18 18:34:56,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:56,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728203479] [2022-11-18 18:34:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:56,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:56,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:56,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728203479] [2022-11-18 18:34:56,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:34:56,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993609204] [2022-11-18 18:34:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:56,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:56,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:56,579 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:56,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 18:34:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:59,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 7078 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:34:59,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-11-18 18:34:59,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:59,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993609204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:59,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:59,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:34:59,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388035435] [2022-11-18 18:34:59,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:59,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:34:59,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:34:59,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:34:59,563 INFO L87 Difference]: Start difference. First operand 14430 states and 20191 transitions. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 3 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-18 18:35:01,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:01,213 INFO L93 Difference]: Finished difference Result 28897 states and 40443 transitions. [2022-11-18 18:35:01,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:35:01,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 3 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 522 [2022-11-18 18:35:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:01,259 INFO L225 Difference]: With dead ends: 28897 [2022-11-18 18:35:01,259 INFO L226 Difference]: Without dead ends: 14470 [2022-11-18 18:35:01,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:35:01,293 INFO L413 NwaCegarLoop]: 7211 mSDtfsCounter, 14 mSDsluCounter, 21557 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 28768 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:01,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 28768 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:35:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14470 states. [2022-11-18 18:35:03,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14470 to 14444. [2022-11-18 18:35:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14444 states, 10199 states have (on average 1.3244435728993038) internal successors, (13508), 10339 states have internal predecessors, (13508), 3350 states have call successors, (3350), 893 states have call predecessors, (3350), 894 states have return successors, (3353), 3351 states have call predecessors, (3353), 3349 states have call successors, (3353) [2022-11-18 18:35:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14444 states to 14444 states and 20211 transitions. [2022-11-18 18:35:03,083 INFO L78 Accepts]: Start accepts. Automaton has 14444 states and 20211 transitions. Word has length 522 [2022-11-18 18:35:03,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:03,084 INFO L495 AbstractCegarLoop]: Abstraction has 14444 states and 20211 transitions. [2022-11-18 18:35:03,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 3 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-18 18:35:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand 14444 states and 20211 transitions. [2022-11-18 18:35:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2022-11-18 18:35:03,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:03,100 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:03,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:03,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-18 18:35:03,301 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:03,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:03,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1631002017, now seen corresponding path program 1 times [2022-11-18 18:35:03,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:03,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947054774] [2022-11-18 18:35:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:03,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:03,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:03,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947054774] [2022-11-18 18:35:03,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:35:03,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528129953] [2022-11-18 18:35:03,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:03,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:03,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:03,555 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:03,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 18:35:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:06,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 7787 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:35:06,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2022-11-18 18:35:06,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2022-11-18 18:35:07,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528129953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:07,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:07,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2022-11-18 18:35:07,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068629903] [2022-11-18 18:35:07,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:07,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:07,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:07,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:07,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:07,612 INFO L87 Difference]: Start difference. First operand 14444 states and 20211 transitions. Second operand has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 3 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (132), 3 states have call predecessors, (132), 3 states have call successors, (132) [2022-11-18 18:35:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:09,135 INFO L93 Difference]: Finished difference Result 28897 states and 40453 transitions. [2022-11-18 18:35:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:35:09,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 3 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (132), 3 states have call predecessors, (132), 3 states have call successors, (132) Word has length 774 [2022-11-18 18:35:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:09,180 INFO L225 Difference]: With dead ends: 28897 [2022-11-18 18:35:09,180 INFO L226 Difference]: Without dead ends: 14456 [2022-11-18 18:35:09,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1546 GetRequests, 1543 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:09,218 INFO L413 NwaCegarLoop]: 7198 mSDtfsCounter, 2 mSDsluCounter, 7193 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14391 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:09,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14391 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:35:09,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14456 states. [2022-11-18 18:35:10,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14456 to 14456. [2022-11-18 18:35:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14456 states, 10207 states have (on average 1.3241892818653864) internal successors, (13516), 10347 states have internal predecessors, (13516), 3354 states have call successors, (3354), 893 states have call predecessors, (3354), 894 states have return successors, (3357), 3355 states have call predecessors, (3357), 3353 states have call successors, (3357) [2022-11-18 18:35:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14456 states to 14456 states and 20227 transitions. [2022-11-18 18:35:10,968 INFO L78 Accepts]: Start accepts. Automaton has 14456 states and 20227 transitions. Word has length 774 [2022-11-18 18:35:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:10,969 INFO L495 AbstractCegarLoop]: Abstraction has 14456 states and 20227 transitions. [2022-11-18 18:35:10,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 3 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (132), 3 states have call predecessors, (132), 3 states have call successors, (132) [2022-11-18 18:35:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 14456 states and 20227 transitions. [2022-11-18 18:35:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2022-11-18 18:35:10,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:10,989 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:11,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:11,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:11,189 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1485403894, now seen corresponding path program 2 times [2022-11-18 18:35:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:11,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605774130] [2022-11-18 18:35:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:11,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:11,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605774130] [2022-11-18 18:35:11,470 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:35:11,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215566984] [2022-11-18 18:35:11,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:11,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:11,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:11,472 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:11,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 18:35:14,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:35:14,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:14,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 7837 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:35:14,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 67 proven. 1 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-18 18:35:14,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2022-11-18 18:35:15,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215566984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:15,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:15,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2022-11-18 18:35:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814627426] [2022-11-18 18:35:15,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:15,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:35:15,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:35:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:35:15,683 INFO L87 Difference]: Start difference. First operand 14456 states and 20227 transitions. Second operand has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2022-11-18 18:35:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:17,255 INFO L93 Difference]: Finished difference Result 28957 states and 40543 transitions. [2022-11-18 18:35:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:35:17,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 785 [2022-11-18 18:35:17,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:17,322 INFO L225 Difference]: With dead ends: 28957 [2022-11-18 18:35:17,322 INFO L226 Difference]: Without dead ends: 14504 [2022-11-18 18:35:17,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1568 GetRequests, 1564 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:35:17,376 INFO L413 NwaCegarLoop]: 7196 mSDtfsCounter, 16 mSDsluCounter, 14378 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 21574 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:17,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 21574 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:35:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14504 states. [2022-11-18 18:35:18,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14504 to 14504. [2022-11-18 18:35:18,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14504 states, 10247 states have (on average 1.3237044988777202) internal successors, (13564), 10387 states have internal predecessors, (13564), 3362 states have call successors, (3362), 893 states have call predecessors, (3362), 894 states have return successors, (3365), 3363 states have call predecessors, (3365), 3361 states have call successors, (3365) [2022-11-18 18:35:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14504 states to 14504 states and 20291 transitions. [2022-11-18 18:35:18,793 INFO L78 Accepts]: Start accepts. Automaton has 14504 states and 20291 transitions. Word has length 785 [2022-11-18 18:35:18,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:18,793 INFO L495 AbstractCegarLoop]: Abstraction has 14504 states and 20291 transitions. [2022-11-18 18:35:18,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2022-11-18 18:35:18,794 INFO L276 IsEmpty]: Start isEmpty. Operand 14504 states and 20291 transitions. [2022-11-18 18:35:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2022-11-18 18:35:18,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:18,812 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:18,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:19,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-18 18:35:19,013 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:19,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:19,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1786508640, now seen corresponding path program 3 times [2022-11-18 18:35:19,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:19,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208563002] [2022-11-18 18:35:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:19,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:19,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:19,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208563002] [2022-11-18 18:35:19,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 18:35:19,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419651736] [2022-11-18 18:35:19,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:35:19,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:19,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:19,291 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:19,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 18:35:21,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 18:35:21,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:21,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:35:21,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-18 18:35:21,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:21,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419651736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:21,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:21,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:35:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479346848] [2022-11-18 18:35:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:21,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:35:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:35:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:21,931 INFO L87 Difference]: Start difference. First operand 14504 states and 20291 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 3 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2022-11-18 18:35:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:23,267 INFO L93 Difference]: Finished difference Result 14504 states and 20291 transitions. [2022-11-18 18:35:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:35:23,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 3 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) Word has length 793 [2022-11-18 18:35:23,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:23,269 INFO L225 Difference]: With dead ends: 14504 [2022-11-18 18:35:23,269 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 18:35:23,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:35:23,296 INFO L413 NwaCegarLoop]: 8049 mSDtfsCounter, 914 mSDsluCounter, 7124 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 15173 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:23,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 15173 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:35:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 18:35:23,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 18:35:23,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 18:35:23,299 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 793 [2022-11-18 18:35:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:23,300 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:35:23,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 3 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2022-11-18 18:35:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 18:35:23,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 18:35:23,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 18:35:23,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:23,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bf3401d-b353-4101-93ad-b1509ec83bd9/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 18:35:23,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.