./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/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_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 11:04:25,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:04:25,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:04:25,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:04:25,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:04:25,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:04:25,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:04:25,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:04:25,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:04:25,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:04:25,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:04:25,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:04:25,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:04:25,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:04:25,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:04:25,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:04:25,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:04:25,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:04:25,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:04:25,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:04:25,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:04:25,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:04:25,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:04:25,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:04:25,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:04:25,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:04:25,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:04:25,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:04:25,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:04:25,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:04:25,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:04:25,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:04:25,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:04:25,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:04:25,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:04:25,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:04:25,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:04:25,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:04:25,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:04:25,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:04:25,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:04:25,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:04:25,815 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:04:25,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:04:25,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:04:25,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:04:25,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:04:25,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:04:25,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:04:25,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:04:25,824 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:04:25,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:04:25,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:04:25,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:04:25,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:04:25,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:04:25,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:04:25,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:04:25,828 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:04:25,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:04:25,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:04:25,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:04:25,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:04:25,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:04:25,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:04:25,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:04:25,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:04:25,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:04:25,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:04:25,833 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:04:25,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:04:25,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:04:25,834 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_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c027fee61a8058055c949088f7676db617c5b1b19a093573b50c07cbdcbacd [2022-11-16 11:04:26,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:04:26,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:04:26,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:04:26,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:04:26,269 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:04:26,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2022-11-16 11:04:26,359 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/data/4a22d58c0/deb855a765774111a04813a6b3f2f53b/FLAG3581597d9 [2022-11-16 11:04:27,949 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:04:27,951 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2022-11-16 11:04:28,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/data/4a22d58c0/deb855a765774111a04813a6b3f2f53b/FLAG3581597d9 [2022-11-16 11:04:28,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/data/4a22d58c0/deb855a765774111a04813a6b3f2f53b [2022-11-16 11:04:28,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:04:28,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:04:28,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:04:28,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:04:28,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:04:28,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:28" (1/1) ... [2022-11-16 11:04:28,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673801ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:28, skipping insertion in model container [2022-11-16 11:04:28,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:28" (1/1) ... [2022-11-16 11:04:28,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:04:28,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:04:40,482 WARN L229 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_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/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] [2022-11-16 11:04:41,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:04:41,348 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:04:43,034 WARN L229 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_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/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] [2022-11-16 11:04:43,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:04:44,071 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:04:44,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44 WrapperNode [2022-11-16 11:04:44,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:04:44,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:04:44,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:04:44,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:04:44,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:44,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:45,057 INFO L138 Inliner]: procedures = 905, calls = 10026, calls flagged for inlining = 323, calls inlined = 188, statements flattened = 12744 [2022-11-16 11:04:45,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:04:45,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:04:45,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:04:45,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:04:45,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:45,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:45,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:45,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:45,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:45,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:45,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:45,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:46,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:04:46,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:04:46,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:04:46,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:04:46,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (1/1) ... [2022-11-16 11:04:46,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:04:46,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:46,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:04:46,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:04:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_ICM_page [2022-11-16 11:04:46,354 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_ICM_page [2022-11-16 11:04:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-16 11:04:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_device [2022-11-16 11:04:46,354 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_device [2022-11-16 11:04:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_status_to_errno [2022-11-16 11:04:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_status_to_errno [2022-11-16 11:04:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icms [2022-11-16 11:04:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icms [2022-11-16 11:04:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-16 11:04:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-16 11:04:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-16 11:04:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-16 11:04:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-16 11:04:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-16 11:04:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_key [2022-11-16 11:04:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_key [2022-11-16 11:04:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure key_to_hw_index [2022-11-16 11:04:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure key_to_hw_index [2022-11-16 11:04:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-16 11:04:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-16 11:04:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2022-11-16 11:04:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2022-11-16 11:04:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-16 11:04:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-16 11:04:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unmap_eq_icm [2022-11-16 11:04:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unmap_eq_icm [2022-11-16 11:04:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-16 11:04:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-16 11:04:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uarc_virt [2022-11-16 11:04:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uarc_virt [2022-11-16 11:04:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2022-11-16 11:04:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2022-11-16 11:04:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-16 11:04:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-16 11:04:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_ah [2022-11-16 11:04:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_ah [2022-11-16 11:04:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 11:04:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 11:04:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_zero [2022-11-16 11:04:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_zero [2022-11-16 11:04:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_cleanup [2022-11-16 11:04:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_cleanup [2022-11-16 11:04:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure ib_unregister_device [2022-11-16 11:04:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_unregister_device [2022-11-16 11:04:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-16 11:04:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-16 11:04:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure ib_query_port [2022-11-16 11:04:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_query_port [2022-11-16 11:04:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_region [2022-11-16 11:04:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_region [2022-11-16 11:04:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-16 11:04:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-16 11:04:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-16 11:04:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-16 11:04:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure pci_pcie_cap [2022-11-16 11:04:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_pcie_cap [2022-11-16 11:04:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_CLOSE_IB [2022-11-16 11:04:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_CLOSE_IB [2022-11-16 11:04:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure clear_page [2022-11-16 11:04:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_page [2022-11-16 11:04:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_pd_alloc [2022-11-16 11:04:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_pd_alloc [2022-11-16 11:04:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:04:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_init_one [2022-11-16 11:04:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_init_one [2022-11-16 11:04:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_create_eq [2022-11-16 11:04:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_create_eq [2022-11-16 11:04:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write_mtt [2022-11-16 11:04:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write_mtt [2022-11-16 11:04:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_icm_table [2022-11-16 11:04:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_icm_table [2022-11-16 11:04:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_catas_cleanup [2022-11-16 11:04:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_catas_cleanup [2022-11-16 11:04:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure hw_index_to_key [2022-11-16 11:04:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_index_to_key [2022-11-16 11:04:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-16 11:04:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-16 11:04:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write64_raw [2022-11-16 11:04:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write64_raw [2022-11-16 11:04:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-16 11:04:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-16 11:04:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_use_polling [2022-11-16 11:04:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_use_polling [2022-11-16 11:04:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2022-11-16 11:04:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2022-11-16 11:04:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icm_table [2022-11-16 11:04:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icm_table [2022-11-16 11:04:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:04:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mtt_range [2022-11-16 11:04:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mtt_range [2022-11-16 11:04:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-16 11:04:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-16 11:04:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:04:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:04:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-16 11:04:46,371 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-16 11:04:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-16 11:04:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-16 11:04:46,372 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-16 11:04:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uar_free [2022-11-16 11:04:46,372 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uar_free [2022-11-16 11:04:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_cleanup [2022-11-16 11:04:46,372 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_cleanup [2022-11-16 11:04:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure tavor_eq_req_not [2022-11-16 11:04:46,373 INFO L138 BoogieDeclarations]: Found implementation of procedure tavor_eq_req_not [2022-11-16 11:04:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-16 11:04:46,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-16 11:04:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2022-11-16 11:04:46,373 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2022-11-16 11:04:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-16 11:04:46,374 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-16 11:04:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_array_cleanup [2022-11-16 11:04:46,374 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_array_cleanup [2022-11-16 11:04:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_eq_table [2022-11-16 11:04:46,374 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_eq_table [2022-11-16 11:04:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-16 11:04:46,375 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-16 11:04:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:04:46,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:04:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-16 11:04:46,376 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-16 11:04:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-16 11:04:46,376 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-16 11:04:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 11:04:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-16 11:04:46,377 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-16 11:04:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_av_table [2022-11-16 11:04:46,377 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_av_table [2022-11-16 11:04:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icm [2022-11-16 11:04:46,377 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icm [2022-11-16 11:04:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_alloc_mtt [2022-11-16 11:04:46,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_alloc_mtt [2022-11-16 11:04:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2022-11-16 11:04:46,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2022-11-16 11:04:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 11:04:46,378 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 11:04:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 11:04:46,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 11:04:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_is_memfree [2022-11-16 11:04:46,379 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_is_memfree [2022-11-16 11:04:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_eq_req_not [2022-11-16 11:04:46,379 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_eq_req_not [2022-11-16 11:04:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_ICM [2022-11-16 11:04:46,380 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_ICM [2022-11-16 11:04:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 11:04:46,380 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 11:04:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure set_eqe_hw [2022-11-16 11:04:46,380 INFO L138 BoogieDeclarations]: Found implementation of procedure set_eqe_hw [2022-11-16 11:04:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-16 11:04:46,381 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-16 11:04:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-16 11:04:46,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-16 11:04:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:04:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-16 11:04:46,382 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-16 11:04:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_update_rate [2022-11-16 11:04:46,382 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_update_rate [2022-11-16 11:04:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:04:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_ICM [2022-11-16 11:04:46,382 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_ICM [2022-11-16 11:04:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_init [2022-11-16 11:04:46,383 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_init [2022-11-16 11:04:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-16 11:04:46,383 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-16 11:04:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-16 11:04:46,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-16 11:04:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_uar_table [2022-11-16 11:04:46,384 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_uar_table [2022-11-16 11:04:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-16 11:04:46,384 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-16 11:04:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-16 11:04:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-16 11:04:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_icm_addr [2022-11-16 11:04:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_icm_addr [2022-11-16 11:04:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2022-11-16 11:04:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2022-11-16 11:04:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-16 11:04:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-16 11:04:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-16 11:04:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-16 11:04:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-16 11:04:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-16 11:04:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mtt [2022-11-16 11:04:46,387 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mtt [2022-11-16 11:04:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure go_bit [2022-11-16 11:04:46,387 INFO L138 BoogieDeclarations]: Found implementation of procedure go_bit [2022-11-16 11:04:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:04:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free [2022-11-16 11:04:46,388 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free [2022-11-16 11:04:46,388 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_zero_bit [2022-11-16 11:04:46,388 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_zero_bit [2022-11-16 11:04:46,388 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-16 11:04:46,388 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-16 11:04:46,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 11:04:46,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 11:04:46,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mthca_device_mutex [2022-11-16 11:04:46,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mthca_device_mutex [2022-11-16 11:04:46,389 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_SW2HW_MPT [2022-11-16 11:04:46,389 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_SW2HW_MPT [2022-11-16 11:04:46,390 INFO L130 BoogieDeclarations]: Found specification of procedure pcie_capability_write_word [2022-11-16 11:04:46,390 INFO L138 BoogieDeclarations]: Found implementation of procedure pcie_capability_write_word [2022-11-16 11:04:46,390 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_irqs [2022-11-16 11:04:46,390 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_irqs [2022-11-16 11:04:46,390 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_mr_table [2022-11-16 11:04:46,391 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_mr_table [2022-11-16 11:04:46,391 INFO L130 BoogieDeclarations]: Found specification of procedure __be64_to_cpup [2022-11-16 11:04:46,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __be64_to_cpup [2022-11-16 11:04:46,391 INFO L130 BoogieDeclarations]: Found specification of procedure __buggy_use_of_MTHCA_GET [2022-11-16 11:04:46,391 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2022-11-16 11:04:46,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2022-11-16 11:04:46,392 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2022-11-16 11:04:46,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2022-11-16 11:04:46,392 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc_notrans [2022-11-16 11:04:46,392 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc_notrans [2022-11-16 11:04:46,392 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-11-16 11:04:46,392 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-11-16 11:04:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-16 11:04:46,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-16 11:04:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_put [2022-11-16 11:04:46,393 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_put [2022-11-16 11:04:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc [2022-11-16 11:04:46,394 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc [2022-11-16 11:04:46,394 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write64 [2022-11-16 11:04:46,394 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write64 [2022-11-16 11:04:46,394 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-16 11:04:46,394 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-16 11:04:46,394 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_imm [2022-11-16 11:04:46,395 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_imm [2022-11-16 11:04:46,395 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_mcg_table [2022-11-16 11:04:46,395 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_mcg_table [2022-11-16 11:04:46,395 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_qp_table [2022-11-16 11:04:46,395 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_qp_table [2022-11-16 11:04:46,395 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-16 11:04:46,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-16 11:04:46,396 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_device [2022-11-16 11:04:46,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_device [2022-11-16 11:04:46,396 INFO L130 BoogieDeclarations]: Found specification of procedure ib_unregister_mad_agent [2022-11-16 11:04:46,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_unregister_mad_agent [2022-11-16 11:04:46,396 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-16 11:04:46,397 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-16 11:04:46,397 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-16 11:04:46,397 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-16 11:04:46,397 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_INIT_HCA [2022-11-16 11:04:46,397 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_INIT_HCA [2022-11-16 11:04:46,397 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_hw_index_to_key [2022-11-16 11:04:46,398 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_hw_index_to_key [2022-11-16 11:04:46,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 11:04:46,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 11:04:46,398 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-16 11:04:46,398 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-16 11:04:46,398 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-11-16 11:04:46,399 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-11-16 11:04:46,399 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_cq_table [2022-11-16 11:04:46,399 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_cq_table [2022-11-16 11:04:46,399 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_cleanup [2022-11-16 11:04:46,399 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_cleanup [2022-11-16 11:04:46,399 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-16 11:04:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-16 11:04:46,400 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_close_hca [2022-11-16 11:04:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_close_hca [2022-11-16 11:04:46,400 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_EQ [2022-11-16 11:04:46,400 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_EQ [2022-11-16 11:04:46,400 INFO L130 BoogieDeclarations]: Found specification of procedure down [2022-11-16 11:04:46,401 INFO L138 BoogieDeclarations]: Found implementation of procedure down [2022-11-16 11:04:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-16 11:04:46,401 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-16 11:04:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAD_IFC [2022-11-16 11:04:46,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAD_IFC [2022-11-16 11:04:46,401 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_map_cmd [2022-11-16 11:04:46,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_map_cmd [2022-11-16 11:04:46,402 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2022-11-16 11:04:46,402 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2022-11-16 11:04:46,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:04:46,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_mthca_icm_table [2022-11-16 11:04:46,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_mthca_icm_table [2022-11-16 11:04:46,402 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_eq [2022-11-16 11:04:46,403 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_eq [2022-11-16 11:04:46,403 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_alloc [2022-11-16 11:04:46,403 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_alloc [2022-11-16 11:04:46,403 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mailbox [2022-11-16 11:04:46,403 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mailbox [2022-11-16 11:04:46,403 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-16 11:04:46,403 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-16 11:04:46,404 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-16 11:04:46,404 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-16 11:04:46,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 11:04:46,404 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_DISABLE_LAM [2022-11-16 11:04:46,404 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_DISABLE_LAM [2022-11-16 11:04:46,404 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-16 11:04:46,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-16 11:04:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 11:04:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_cpu [2022-11-16 11:04:46,405 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_cpu [2022-11-16 11:04:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uar_alloc [2022-11-16 11:04:46,405 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uar_alloc [2022-11-16 11:04:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_empty [2022-11-16 11:04:46,406 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_empty [2022-11-16 11:04:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mthca_device_mutex [2022-11-16 11:04:46,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mthca_device_mutex [2022-11-16 11:04:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_setup_hca [2022-11-16 11:04:46,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_setup_hca [2022-11-16 11:04:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 11:04:46,407 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 11:04:46,407 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc [2022-11-16 11:04:46,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc [2022-11-16 11:04:46,407 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_CONF_SPECIAL_QP [2022-11-16 11:04:46,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_CONF_SPECIAL_QP [2022-11-16 11:04:46,407 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_map_reg [2022-11-16 11:04:46,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_map_reg [2022-11-16 11:04:46,408 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_check_profile_val [2022-11-16 11:04:46,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_check_profile_val [2022-11-16 11:04:46,408 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_sg [2022-11-16 11:04:46,408 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_sg [2022-11-16 11:04:46,408 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_FA [2022-11-16 11:04:46,409 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_FA [2022-11-16 11:04:46,409 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_free [2022-11-16 11:04:46,409 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_free [2022-11-16 11:04:46,409 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2022-11-16 11:04:46,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2022-11-16 11:04:46,409 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write_mtt_size [2022-11-16 11:04:46,410 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write_mtt_size [2022-11-16 11:04:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure dma_get_cache_alignment [2022-11-16 11:04:46,410 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_get_cache_alignment [2022-11-16 11:04:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mr [2022-11-16 11:04:46,410 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mr [2022-11-16 11:04:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mailbox [2022-11-16 11:04:46,411 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mailbox [2022-11-16 11:04:46,411 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-16 11:04:46,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-16 11:04:46,411 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-16 11:04:46,411 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-16 11:04:46,411 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_dev_lim [2022-11-16 11:04:46,412 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_dev_lim [2022-11-16 11:04:46,412 INFO L130 BoogieDeclarations]: Found specification of procedure __roundup_pow_of_two [2022-11-16 11:04:46,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __roundup_pow_of_two [2022-11-16 11:04:46,412 INFO L130 BoogieDeclarations]: Found specification of procedure tavor_hw_index_to_key [2022-11-16 11:04:46,412 INFO L138 BoogieDeclarations]: Found implementation of procedure tavor_hw_index_to_key [2022-11-16 11:04:46,412 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_QUERY_FW [2022-11-16 11:04:46,413 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_QUERY_FW [2022-11-16 11:04:46,413 INFO L130 BoogieDeclarations]: Found specification of procedure writeq [2022-11-16 11:04:46,413 INFO L138 BoogieDeclarations]: Found implementation of procedure writeq [2022-11-16 11:04:46,413 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-16 11:04:46,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-16 11:04:46,413 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_SYS_DIS [2022-11-16 11:04:46,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_SYS_DIS [2022-11-16 11:04:46,414 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_init [2022-11-16 11:04:46,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_init [2022-11-16 11:04:46,414 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_box [2022-11-16 11:04:46,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_box [2022-11-16 11:04:46,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 11:04:46,415 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2022-11-16 11:04:46,415 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2022-11-16 11:04:46,415 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-16 11:04:46,415 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-16 11:04:46,415 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_make_profile [2022-11-16 11:04:46,416 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_make_profile [2022-11-16 11:04:46,416 INFO L130 BoogieDeclarations]: Found specification of procedure fls64 [2022-11-16 11:04:46,416 INFO L138 BoogieDeclarations]: Found implementation of procedure fls64 [2022-11-16 11:04:46,416 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-16 11:04:46,416 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-16 11:04:46,416 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unregister_device [2022-11-16 11:04:46,417 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unregister_device [2022-11-16 11:04:46,417 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_key_to_hw_index [2022-11-16 11:04:46,417 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_key_to_hw_index [2022-11-16 11:04:46,417 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2022-11-16 11:04:46,417 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2022-11-16 11:04:46,417 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-16 11:04:46,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-16 11:04:46,418 INFO L130 BoogieDeclarations]: Found specification of procedure up [2022-11-16 11:04:46,418 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2022-11-16 11:04:46,418 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-16 11:04:46,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-16 11:04:46,418 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-16 11:04:46,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-16 11:04:46,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:04:46,419 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_find [2022-11-16 11:04:46,419 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_find [2022-11-16 11:04:46,419 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_icm [2022-11-16 11:04:46,419 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_icm [2022-11-16 11:04:46,419 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_icm_size [2022-11-16 11:04:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_icm_size [2022-11-16 11:04:46,420 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-16 11:04:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-16 11:04:46,420 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-11-16 11:04:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-11-16 11:04:46,420 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_srq_table [2022-11-16 11:04:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_srq_table [2022-11-16 11:04:46,421 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_poll [2022-11-16 11:04:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_poll [2022-11-16 11:04:46,421 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_ICM_AUX [2022-11-16 11:04:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_ICM_AUX [2022-11-16 11:04:46,421 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-11-16 11:04:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-11-16 11:04:46,422 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_wait [2022-11-16 11:04:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_wait [2022-11-16 11:04:46,422 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc_phys [2022-11-16 11:04:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc_phys [2022-11-16 11:04:46,422 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_sg [2022-11-16 11:04:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_sg [2022-11-16 11:04:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 11:04:46,423 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 11:04:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure get_eqe [2022-11-16 11:04:46,423 INFO L138 BoogieDeclarations]: Found implementation of procedure get_eqe [2022-11-16 11:04:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure async_mask [2022-11-16 11:04:46,423 INFO L138 BoogieDeclarations]: Found implementation of procedure async_mask [2022-11-16 11:04:46,424 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_array_init [2022-11-16 11:04:46,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_array_init [2022-11-16 11:04:46,424 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_pd_free [2022-11-16 11:04:46,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_pd_free [2022-11-16 11:04:46,424 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd [2022-11-16 11:04:46,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd [2022-11-16 11:04:46,424 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-16 11:04:46,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-16 11:04:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_get [2022-11-16 11:04:46,425 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_get [2022-11-16 11:04:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_remove_one [2022-11-16 11:04:46,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_remove_one [2022-11-16 11:04:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-16 11:04:46,425 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-16 11:04:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_pd_table [2022-11-16 11:04:46,426 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_pd_table [2022-11-16 11:04:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure init_query_mad [2022-11-16 11:04:46,426 INFO L138 BoogieDeclarations]: Found implementation of procedure init_query_mad [2022-11-16 11:04:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2022-11-16 11:04:46,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2022-11-16 11:04:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_mthca_icm_table [2022-11-16 11:04:46,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_mthca_icm_table [2022-11-16 11:04:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_post [2022-11-16 11:04:46,427 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_post [2022-11-16 11:04:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-16 11:04:46,427 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-16 11:04:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-16 11:04:46,428 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-16 11:04:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:04:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unmap_eq_regs [2022-11-16 11:04:46,428 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unmap_eq_regs [2022-11-16 11:04:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure __buggy_use_of_MTHCA_PUT [2022-11-16 11:04:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mtt [2022-11-16 11:04:46,429 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mtt [2022-11-16 11:04:48,561 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:04:48,568 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:05:28,328 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:05:28,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:05:28,391 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:05:28,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:28 BoogieIcfgContainer [2022-11-16 11:05:28,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:05:28,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:05:28,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:05:28,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:05:28,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:04:28" (1/3) ... [2022-11-16 11:05:28,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d4fc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:28, skipping insertion in model container [2022-11-16 11:05:28,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:44" (2/3) ... [2022-11-16 11:05:28,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d4fc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:28, skipping insertion in model container [2022-11-16 11:05:28,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:28" (3/3) ... [2022-11-16 11:05:28,418 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2022-11-16 11:05:28,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:05:28,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:05:28,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:05:28,677 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;@675e7bd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:05:28,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:05:28,708 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) [2022-11-16 11:05:28,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:05:28,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:28,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:28,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:28,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash 865880660, now seen corresponding path program 1 times [2022-11-16 11:05:28,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:28,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410327599] [2022-11-16 11:05:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:28,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:29,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:29,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410327599] [2022-11-16 11:05:29,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410327599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:29,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:29,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:29,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519667279] [2022-11-16 11:05:29,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:29,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:29,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:29,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:30,010 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) [2022-11-16 11:05:31,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:31,279 INFO L93 Difference]: Finished difference Result 10125 states and 15144 transitions. [2022-11-16 11:05:31,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:31,287 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 [2022-11-16 11:05:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:31,377 INFO L225 Difference]: With dead ends: 10125 [2022-11-16 11:05:31,377 INFO L226 Difference]: Without dead ends: 5099 [2022-11-16 11:05:31,436 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 [2022-11-16 11:05:31,444 INFO L413 NwaCegarLoop]: 7313 mSDtfsCounter, 198 mSDsluCounter, 7286 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:31,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 14599 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5099 states. [2022-11-16 11:05:31,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5099 to 5069. [2022-11-16 11:05:31,963 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) [2022-11-16 11:05:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 7418 transitions. [2022-11-16 11:05:32,028 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 7418 transitions. Word has length 18 [2022-11-16 11:05:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:32,029 INFO L495 AbstractCegarLoop]: Abstraction has 5069 states and 7418 transitions. [2022-11-16 11:05:32,030 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) [2022-11-16 11:05:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 7418 transitions. [2022-11-16 11:05:32,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 11:05:32,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:32,037 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] [2022-11-16 11:05:32,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:05:32,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:32,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash 728035721, now seen corresponding path program 1 times [2022-11-16 11:05:32,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:32,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995358216] [2022-11-16 11:05:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:32,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:32,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:05:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:32,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:32,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995358216] [2022-11-16 11:05:32,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995358216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:32,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:32,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:32,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056292519] [2022-11-16 11:05:32,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:32,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:32,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:32,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:32,804 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) [2022-11-16 11:05:33,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:33,756 INFO L93 Difference]: Finished difference Result 15087 states and 22084 transitions. [2022-11-16 11:05:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:33,757 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 [2022-11-16 11:05:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:33,859 INFO L225 Difference]: With dead ends: 15087 [2022-11-16 11:05:33,860 INFO L226 Difference]: Without dead ends: 10021 [2022-11-16 11:05:33,897 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 [2022-11-16 11:05:33,900 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 [2022-11-16 11:05:33,901 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] [2022-11-16 11:05:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10021 states. [2022-11-16 11:05:34,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10021 to 10007. [2022-11-16 11:05:34,811 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) [2022-11-16 11:05:34,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 14650 transitions. [2022-11-16 11:05:34,933 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 14650 transitions. Word has length 21 [2022-11-16 11:05:34,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:34,934 INFO L495 AbstractCegarLoop]: Abstraction has 10007 states and 14650 transitions. [2022-11-16 11:05:34,935 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) [2022-11-16 11:05:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 14650 transitions. [2022-11-16 11:05:34,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 11:05:34,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:34,951 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] [2022-11-16 11:05:34,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:05:34,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:34,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash 89414917, now seen corresponding path program 1 times [2022-11-16 11:05:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:34,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346577716] [2022-11-16 11:05:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:34,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:05:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:05:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:05:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:05:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:05:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:05:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:05:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:05:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:05:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:05:38,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:38,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346577716] [2022-11-16 11:05:38,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346577716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:38,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849808420] [2022-11-16 11:05:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:38,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:38,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:38,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:39,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:05:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 3966 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:05:41,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:05:41,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:41,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849808420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:41,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:41,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2022-11-16 11:05:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770862922] [2022-11-16 11:05:41,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:41,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:41,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:41,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:41,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:05:41,934 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) [2022-11-16 11:05:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:42,611 INFO L93 Difference]: Finished difference Result 20011 states and 29297 transitions. [2022-11-16 11:05:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:42,612 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 [2022-11-16 11:05:42,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:42,710 INFO L225 Difference]: With dead ends: 20011 [2022-11-16 11:05:42,711 INFO L226 Difference]: Without dead ends: 10007 [2022-11-16 11:05:42,758 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 [2022-11-16 11:05:42,760 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 [2022-11-16 11:05:42,761 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] [2022-11-16 11:05:42,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10007 states. [2022-11-16 11:05:43,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10007 to 10007. [2022-11-16 11:05:43,422 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) [2022-11-16 11:05:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 14648 transitions. [2022-11-16 11:05:43,516 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 14648 transitions. Word has length 91 [2022-11-16 11:05:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:43,517 INFO L495 AbstractCegarLoop]: Abstraction has 10007 states and 14648 transitions. [2022-11-16 11:05:43,517 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) [2022-11-16 11:05:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 14648 transitions. [2022-11-16 11:05:43,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 11:05:43,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:43,520 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] [2022-11-16 11:05:43,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:43,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:43,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:43,738 INFO L85 PathProgramCache]: Analyzing trace with hash 308269635, now seen corresponding path program 1 times [2022-11-16 11:05:43,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:43,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029748800] [2022-11-16 11:05:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:43,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:45,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:05:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:05:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:05:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:05:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:05:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:05:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:05:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:05:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:05:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:05:46,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:46,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029748800] [2022-11-16 11:05:46,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029748800] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:46,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916197883] [2022-11-16 11:05:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:46,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:46,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:46,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:46,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:05:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:49,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 3965 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:05:49,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:05:49,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:49,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916197883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:49,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:49,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:05:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237781312] [2022-11-16 11:05:49,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:49,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:49,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:49,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:49,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:05:49,342 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) [2022-11-16 11:05:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:50,104 INFO L93 Difference]: Finished difference Result 10065 states and 14728 transitions. [2022-11-16 11:05:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:50,105 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 [2022-11-16 11:05:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:50,218 INFO L225 Difference]: With dead ends: 10065 [2022-11-16 11:05:50,218 INFO L226 Difference]: Without dead ends: 10036 [2022-11-16 11:05:50,234 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 [2022-11-16 11:05:50,246 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 [2022-11-16 11:05:50,248 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] [2022-11-16 11:05:50,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2022-11-16 11:05:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 10007. [2022-11-16 11:05:51,082 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) [2022-11-16 11:05:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 14647 transitions. [2022-11-16 11:05:51,169 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 14647 transitions. Word has length 91 [2022-11-16 11:05:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:51,170 INFO L495 AbstractCegarLoop]: Abstraction has 10007 states and 14647 transitions. [2022-11-16 11:05:51,171 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) [2022-11-16 11:05:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 14647 transitions. [2022-11-16 11:05:51,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 11:05:51,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:51,177 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] [2022-11-16 11:05:51,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:51,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:51,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:51,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:51,392 INFO L85 PathProgramCache]: Analyzing trace with hash 365527937, now seen corresponding path program 1 times [2022-11-16 11:05:51,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:51,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629336129] [2022-11-16 11:05:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:51,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:05:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:53,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:05:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:05:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:05:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:05:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:05:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:05:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:05:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:05:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:05:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:05:54,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:54,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629336129] [2022-11-16 11:05:54,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629336129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:54,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766504872] [2022-11-16 11:05:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:54,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:54,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:54,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:54,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:05:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:56,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 3952 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:05:56,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:05:57,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:57,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766504872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:57,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:57,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:05:57,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676136713] [2022-11-16 11:05:57,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:05:57,028 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) [2022-11-16 11:05:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:58,027 INFO L93 Difference]: Finished difference Result 10009 states and 14648 transitions. [2022-11-16 11:05:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:58,028 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 [2022-11-16 11:05:58,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:58,082 INFO L225 Difference]: With dead ends: 10009 [2022-11-16 11:05:58,082 INFO L226 Difference]: Without dead ends: 10006 [2022-11-16 11:05:58,087 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 [2022-11-16 11:05:58,088 INFO L413 NwaCegarLoop]: 7254 mSDtfsCounter, 7202 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:58,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7202 Valid, 7254 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:05:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10006 states. [2022-11-16 11:05:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10006 to 10006. [2022-11-16 11:05:58,708 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) [2022-11-16 11:05:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10006 states to 10006 states and 14645 transitions. [2022-11-16 11:05:58,772 INFO L78 Accepts]: Start accepts. Automaton has 10006 states and 14645 transitions. Word has length 91 [2022-11-16 11:05:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:58,773 INFO L495 AbstractCegarLoop]: Abstraction has 10006 states and 14645 transitions. [2022-11-16 11:05:58,774 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) [2022-11-16 11:05:58,774 INFO L276 IsEmpty]: Start isEmpty. Operand 10006 states and 14645 transitions. [2022-11-16 11:05:58,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 11:05:58,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:58,783 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] [2022-11-16 11:05:58,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:05:58,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:58,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:58,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:59,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1555618866, now seen corresponding path program 1 times [2022-11-16 11:05:59,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:59,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520342255] [2022-11-16 11:05:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:59,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:06:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:06:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:06:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:06:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:06:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:06:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:06:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:06:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:06:01,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:01,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520342255] [2022-11-16 11:06:01,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520342255] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:01,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097135662] [2022-11-16 11:06:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:01,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:01,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:01,256 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:01,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:06:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:03,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 3954 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:06:03,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:06:03,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:03,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097135662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:03,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:03,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:06:03,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981261373] [2022-11-16 11:06:03,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:03,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:03,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:03,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:03,969 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) [2022-11-16 11:06:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:04,679 INFO L93 Difference]: Finished difference Result 10008 states and 14646 transitions. [2022-11-16 11:06:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:04,680 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 [2022-11-16 11:06:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:04,737 INFO L225 Difference]: With dead ends: 10008 [2022-11-16 11:06:04,737 INFO L226 Difference]: Without dead ends: 10005 [2022-11-16 11:06:04,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:04,749 INFO L413 NwaCegarLoop]: 7252 mSDtfsCounter, 7199 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:04,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7199 Valid, 7252 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:04,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10005 states. [2022-11-16 11:06:05,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10005 to 10005. [2022-11-16 11:06:05,445 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) [2022-11-16 11:06:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10005 states to 10005 states and 14643 transitions. [2022-11-16 11:06:05,512 INFO L78 Accepts]: Start accepts. Automaton has 10005 states and 14643 transitions. Word has length 92 [2022-11-16 11:06:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:05,513 INFO L495 AbstractCegarLoop]: Abstraction has 10005 states and 14643 transitions. [2022-11-16 11:06:05,513 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) [2022-11-16 11:06:05,513 INFO L276 IsEmpty]: Start isEmpty. Operand 10005 states and 14643 transitions. [2022-11-16 11:06:05,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:06:05,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:05,515 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] [2022-11-16 11:06:05,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:05,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:05,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash -981622748, now seen corresponding path program 1 times [2022-11-16 11:06:05,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:05,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324911826] [2022-11-16 11:06:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:05,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:06:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:06:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:06:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:06:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:06:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:06:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:06:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:06:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:06:07,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:07,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324911826] [2022-11-16 11:06:07,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324911826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:07,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001612506] [2022-11-16 11:06:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:07,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:07,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:07,911 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:07,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:06:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:10,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 3956 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:06:10,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:06:10,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:10,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001612506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:10,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:10,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:06:10,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405571338] [2022-11-16 11:06:10,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:10,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:10,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:10,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:10,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:10,758 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) [2022-11-16 11:06:11,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:11,545 INFO L93 Difference]: Finished difference Result 10063 states and 14699 transitions. [2022-11-16 11:06:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:11,546 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 [2022-11-16 11:06:11,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:11,606 INFO L225 Difference]: With dead ends: 10063 [2022-11-16 11:06:11,606 INFO L226 Difference]: Without dead ends: 10059 [2022-11-16 11:06:11,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:11,617 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 [2022-11-16 11:06:11,617 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] [2022-11-16 11:06:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10059 states. [2022-11-16 11:06:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10059 to 10057. [2022-11-16 11:06:12,654 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) [2022-11-16 11:06:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 14692 transitions. [2022-11-16 11:06:12,737 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 14692 transitions. Word has length 93 [2022-11-16 11:06:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:12,737 INFO L495 AbstractCegarLoop]: Abstraction has 10057 states and 14692 transitions. [2022-11-16 11:06:12,738 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) [2022-11-16 11:06:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 14692 transitions. [2022-11-16 11:06:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 11:06:12,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:12,740 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] [2022-11-16 11:06:12,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:12,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:12,960 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash -367607407, now seen corresponding path program 1 times [2022-11-16 11:06:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:12,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451038751] [2022-11-16 11:06:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:12,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:14,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:06:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:06:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:06:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:06:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:06:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:06:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:06:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:06:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:06:15,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:15,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451038751] [2022-11-16 11:06:15,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451038751] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:15,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906505111] [2022-11-16 11:06:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:15,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:15,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:15,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:15,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:06:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:17,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 3958 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:06:17,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:06:18,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:18,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906505111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:18,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:18,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:06:18,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101599069] [2022-11-16 11:06:18,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:18,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:18,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:18,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:18,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:18,035 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) [2022-11-16 11:06:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:18,564 INFO L93 Difference]: Finished difference Result 10059 states and 14693 transitions. [2022-11-16 11:06:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:18,565 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 [2022-11-16 11:06:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:18,619 INFO L225 Difference]: With dead ends: 10059 [2022-11-16 11:06:18,619 INFO L226 Difference]: Without dead ends: 10056 [2022-11-16 11:06:18,628 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 [2022-11-16 11:06:18,629 INFO L413 NwaCegarLoop]: 7246 mSDtfsCounter, 7191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:18,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7191 Valid, 7246 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:06:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10056 states. [2022-11-16 11:06:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10056 to 10056. [2022-11-16 11:06:19,488 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) [2022-11-16 11:06:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10056 states to 10056 states and 14690 transitions. [2022-11-16 11:06:19,548 INFO L78 Accepts]: Start accepts. Automaton has 10056 states and 14690 transitions. Word has length 94 [2022-11-16 11:06:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:19,549 INFO L495 AbstractCegarLoop]: Abstraction has 10056 states and 14690 transitions. [2022-11-16 11:06:19,549 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) [2022-11-16 11:06:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 10056 states and 14690 transitions. [2022-11-16 11:06:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 11:06:19,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:19,552 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] [2022-11-16 11:06:19,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:19,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:19,775 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:19,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:19,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1487003847, now seen corresponding path program 1 times [2022-11-16 11:06:19,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:19,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511541332] [2022-11-16 11:06:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:19,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:06:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:06:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:06:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:06:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:06:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:06:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:06:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:06:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:06:21,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:21,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511541332] [2022-11-16 11:06:21,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511541332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:21,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353842607] [2022-11-16 11:06:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:21,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:21,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:21,798 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:21,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:06:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:23,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 3960 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:06:23,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:06:24,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:24,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353842607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:24,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:24,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:06:24,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335576598] [2022-11-16 11:06:24,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:24,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:24,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:24,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:24,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:24,410 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) [2022-11-16 11:06:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:25,081 INFO L93 Difference]: Finished difference Result 10081 states and 14708 transitions. [2022-11-16 11:06:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:25,082 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 [2022-11-16 11:06:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:25,128 INFO L225 Difference]: With dead ends: 10081 [2022-11-16 11:06:25,128 INFO L226 Difference]: Without dead ends: 10077 [2022-11-16 11:06:25,134 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 [2022-11-16 11:06:25,135 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:25,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 14268 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:06:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10077 states. [2022-11-16 11:06:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10077 to 10075. [2022-11-16 11:06:25,928 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) [2022-11-16 11:06:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10075 states to 10075 states and 14701 transitions. [2022-11-16 11:06:25,987 INFO L78 Accepts]: Start accepts. Automaton has 10075 states and 14701 transitions. Word has length 95 [2022-11-16 11:06:25,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:25,987 INFO L495 AbstractCegarLoop]: Abstraction has 10075 states and 14701 transitions. [2022-11-16 11:06:25,988 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) [2022-11-16 11:06:25,988 INFO L276 IsEmpty]: Start isEmpty. Operand 10075 states and 14701 transitions. [2022-11-16 11:06:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-16 11:06:25,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:25,990 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] [2022-11-16 11:06:26,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:26,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 11:06:26,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:26,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1149584556, now seen corresponding path program 1 times [2022-11-16 11:06:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:26,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292171400] [2022-11-16 11:06:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:26,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:06:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:06:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:06:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:06:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:06:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:06:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:06:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:06:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:06:28,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:28,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292171400] [2022-11-16 11:06:28,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292171400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:28,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401204872] [2022-11-16 11:06:28,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:28,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:28,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:28,297 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:28,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:06:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:30,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 3962 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:06:30,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:06:30,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:30,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401204872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:30,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:30,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:06:30,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373717294] [2022-11-16 11:06:30,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:30,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:30,848 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) [2022-11-16 11:06:31,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:31,612 INFO L93 Difference]: Finished difference Result 10077 states and 14702 transitions. [2022-11-16 11:06:31,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:31,613 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 [2022-11-16 11:06:31,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:31,658 INFO L225 Difference]: With dead ends: 10077 [2022-11-16 11:06:31,658 INFO L226 Difference]: Without dead ends: 10074 [2022-11-16 11:06:31,664 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 [2022-11-16 11:06:31,665 INFO L413 NwaCegarLoop]: 7240 mSDtfsCounter, 7183 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:31,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7183 Valid, 7240 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10074 states. [2022-11-16 11:06:32,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10074 to 10074. [2022-11-16 11:06:32,502 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) [2022-11-16 11:06:32,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10074 states to 10074 states and 14699 transitions. [2022-11-16 11:06:32,562 INFO L78 Accepts]: Start accepts. Automaton has 10074 states and 14699 transitions. Word has length 96 [2022-11-16 11:06:32,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:32,562 INFO L495 AbstractCegarLoop]: Abstraction has 10074 states and 14699 transitions. [2022-11-16 11:06:32,563 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) [2022-11-16 11:06:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 10074 states and 14699 transitions. [2022-11-16 11:06:32,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-16 11:06:32,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:32,565 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] [2022-11-16 11:06:32,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:32,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:06:32,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1279441558, now seen corresponding path program 1 times [2022-11-16 11:06:32,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:32,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942508296] [2022-11-16 11:06:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:32,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:06:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:06:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:06:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:06:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:06:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:06:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:06:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:06:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:06:34,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:34,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942508296] [2022-11-16 11:06:34,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942508296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:34,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279967015] [2022-11-16 11:06:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:34,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:34,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:34,784 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:34,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:06:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:37,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 3964 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:06:37,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:06:37,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:37,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279967015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:37,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:37,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:06:37,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93190150] [2022-11-16 11:06:37,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:37,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:37,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:37,651 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) [2022-11-16 11:06:38,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:38,634 INFO L93 Difference]: Finished difference Result 10076 states and 14700 transitions. [2022-11-16 11:06:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:38,635 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 [2022-11-16 11:06:38,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:38,690 INFO L225 Difference]: With dead ends: 10076 [2022-11-16 11:06:38,691 INFO L226 Difference]: Without dead ends: 10073 [2022-11-16 11:06:38,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:38,701 INFO L413 NwaCegarLoop]: 7238 mSDtfsCounter, 7180 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:38,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7180 Valid, 7238 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:38,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10073 states. [2022-11-16 11:06:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10073 to 10073. [2022-11-16 11:06:39,814 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) [2022-11-16 11:06:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10073 states to 10073 states and 14697 transitions. [2022-11-16 11:06:39,869 INFO L78 Accepts]: Start accepts. Automaton has 10073 states and 14697 transitions. Word has length 97 [2022-11-16 11:06:39,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:39,869 INFO L495 AbstractCegarLoop]: Abstraction has 10073 states and 14697 transitions. [2022-11-16 11:06:39,869 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) [2022-11-16 11:06:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand 10073 states and 14697 transitions. [2022-11-16 11:06:39,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 11:06:39,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:39,871 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] [2022-11-16 11:06:39,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:40,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:06:40,072 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:40,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:40,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1010036457, now seen corresponding path program 1 times [2022-11-16 11:06:40,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:40,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934850614] [2022-11-16 11:06:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:40,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:06:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:06:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:06:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:06:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:06:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:06:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:06:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:06:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:06:41,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:41,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934850614] [2022-11-16 11:06:41,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934850614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:41,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906135832] [2022-11-16 11:06:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:41,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:41,907 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:41,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:06:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:44,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 3966 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:06:44,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:06:44,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:44,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906135832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:44,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:44,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:06:44,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149864783] [2022-11-16 11:06:44,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:44,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:44,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:44,796 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) [2022-11-16 11:06:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:45,412 INFO L93 Difference]: Finished difference Result 10075 states and 14698 transitions. [2022-11-16 11:06:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:45,412 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 [2022-11-16 11:06:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:45,449 INFO L225 Difference]: With dead ends: 10075 [2022-11-16 11:06:45,449 INFO L226 Difference]: Without dead ends: 10072 [2022-11-16 11:06:45,456 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 [2022-11-16 11:06:45,457 INFO L413 NwaCegarLoop]: 7236 mSDtfsCounter, 7177 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:45,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7177 Valid, 7236 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:06:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2022-11-16 11:06:46,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 10072. [2022-11-16 11:06:46,324 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) [2022-11-16 11:06:46,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10072 states to 10072 states and 14695 transitions. [2022-11-16 11:06:46,365 INFO L78 Accepts]: Start accepts. Automaton has 10072 states and 14695 transitions. Word has length 98 [2022-11-16 11:06:46,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:46,365 INFO L495 AbstractCegarLoop]: Abstraction has 10072 states and 14695 transitions. [2022-11-16 11:06:46,366 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) [2022-11-16 11:06:46,366 INFO L276 IsEmpty]: Start isEmpty. Operand 10072 states and 14695 transitions. [2022-11-16 11:06:46,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-16 11:06:46,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:46,369 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] [2022-11-16 11:06:46,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:46,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:06:46,591 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:46,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:46,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1248408051, now seen corresponding path program 1 times [2022-11-16 11:06:46,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:46,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384195538] [2022-11-16 11:06:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:46,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:47,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:06:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:06:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:06:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:06:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:06:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:06:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:06:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:06:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:06:48,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:48,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384195538] [2022-11-16 11:06:48,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384195538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:48,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596934522] [2022-11-16 11:06:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:48,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:48,222 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:48,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:06:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:50,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 3968 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:06:50,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:06:50,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:50,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596934522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:50,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:50,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:06:50,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245094114] [2022-11-16 11:06:50,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:50,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:50,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:50,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:50,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:50,948 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) [2022-11-16 11:06:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:51,597 INFO L93 Difference]: Finished difference Result 11461 states and 16470 transitions. [2022-11-16 11:06:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:51,598 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 [2022-11-16 11:06:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:51,635 INFO L225 Difference]: With dead ends: 11461 [2022-11-16 11:06:51,635 INFO L226 Difference]: Without dead ends: 11457 [2022-11-16 11:06:51,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:51,644 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 [2022-11-16 11:06:51,644 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] [2022-11-16 11:06:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11457 states. [2022-11-16 11:06:52,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11457 to 11454. [2022-11-16 11:06:52,507 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) [2022-11-16 11:06:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11454 states to 11454 states and 16462 transitions. [2022-11-16 11:06:52,552 INFO L78 Accepts]: Start accepts. Automaton has 11454 states and 16462 transitions. Word has length 99 [2022-11-16 11:06:52,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:52,552 INFO L495 AbstractCegarLoop]: Abstraction has 11454 states and 16462 transitions. [2022-11-16 11:06:52,553 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) [2022-11-16 11:06:52,553 INFO L276 IsEmpty]: Start isEmpty. Operand 11454 states and 16462 transitions. [2022-11-16 11:06:52,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 11:06:52,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:52,555 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] [2022-11-16 11:06:52,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:52,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:52,775 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:52,775 INFO L85 PathProgramCache]: Analyzing trace with hash -47988006, now seen corresponding path program 1 times [2022-11-16 11:06:52,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:52,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585390071] [2022-11-16 11:06:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:52,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:53,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:06:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:06:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:06:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:06:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:06:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:06:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:06:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:06:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:06:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:54,457 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:06:54,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:54,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585390071] [2022-11-16 11:06:54,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585390071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:54,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117086999] [2022-11-16 11:06:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:54,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:54,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:54,460 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:54,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:06:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:56,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 3970 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:06:56,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:06:57,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:57,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117086999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:57,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:57,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:06:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30735861] [2022-11-16 11:06:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:57,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:06:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:06:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:06:57,181 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) [2022-11-16 11:06:57,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:57,917 INFO L93 Difference]: Finished difference Result 11456 states and 16463 transitions. [2022-11-16 11:06:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:06:57,918 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 [2022-11-16 11:06:57,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:57,958 INFO L225 Difference]: With dead ends: 11456 [2022-11-16 11:06:57,958 INFO L226 Difference]: Without dead ends: 11453 [2022-11-16 11:06:57,967 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 [2022-11-16 11:06:57,967 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 [2022-11-16 11:06:57,968 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] [2022-11-16 11:06:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11453 states. [2022-11-16 11:06:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11453 to 11453. [2022-11-16 11:06:58,861 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) [2022-11-16 11:06:58,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 16460 transitions. [2022-11-16 11:06:58,908 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 16460 transitions. Word has length 100 [2022-11-16 11:06:58,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:58,908 INFO L495 AbstractCegarLoop]: Abstraction has 11453 states and 16460 transitions. [2022-11-16 11:06:58,908 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) [2022-11-16 11:06:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 16460 transitions. [2022-11-16 11:06:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 11:06:58,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:58,910 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] [2022-11-16 11:06:58,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:59,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:59,115 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1489667408, now seen corresponding path program 1 times [2022-11-16 11:06:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:59,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094782449] [2022-11-16 11:06:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:59,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:07:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:07:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:07:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:07:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:07:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:07:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:07:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:07:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:07:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:00,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094782449] [2022-11-16 11:07:00,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094782449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:00,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356654543] [2022-11-16 11:07:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:00,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:00,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:00,694 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:00,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:07:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:02,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 3972 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:07:02,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:07:03,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:03,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356654543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:03,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:03,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:07:03,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184265669] [2022-11-16 11:07:03,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:03,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:03,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:03,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:07:03,454 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) [2022-11-16 11:07:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:04,294 INFO L93 Difference]: Finished difference Result 11455 states and 16461 transitions. [2022-11-16 11:07:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:04,294 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 [2022-11-16 11:07:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:04,332 INFO L225 Difference]: With dead ends: 11455 [2022-11-16 11:07:04,332 INFO L226 Difference]: Without dead ends: 11452 [2022-11-16 11:07:04,340 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 [2022-11-16 11:07:04,341 INFO L413 NwaCegarLoop]: 7228 mSDtfsCounter, 7166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:04,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7166 Valid, 7228 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:07:04,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11452 states. [2022-11-16 11:07:05,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11452 to 11452. [2022-11-16 11:07:05,275 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) [2022-11-16 11:07:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11452 states to 11452 states and 16458 transitions. [2022-11-16 11:07:05,319 INFO L78 Accepts]: Start accepts. Automaton has 11452 states and 16458 transitions. Word has length 101 [2022-11-16 11:07:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:05,320 INFO L495 AbstractCegarLoop]: Abstraction has 11452 states and 16458 transitions. [2022-11-16 11:07:05,320 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) [2022-11-16 11:07:05,320 INFO L276 IsEmpty]: Start isEmpty. Operand 11452 states and 16458 transitions. [2022-11-16 11:07:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 11:07:05,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:05,321 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] [2022-11-16 11:07:05,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:05,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:05,522 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:05,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1062916253, now seen corresponding path program 1 times [2022-11-16 11:07:05,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:05,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701126884] [2022-11-16 11:07:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:07:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:07:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:07:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:07:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:07:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:07:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:07:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:07:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:07:07,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:07,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701126884] [2022-11-16 11:07:07,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701126884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464549302] [2022-11-16 11:07:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:07,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:07,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:07,103 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:07,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:07:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:09,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 3974 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:07:09,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:07:09,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:09,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464549302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:09,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:09,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:07:09,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20894186] [2022-11-16 11:07:09,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:09,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:09,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:09,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:09,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:07:09,895 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) [2022-11-16 11:07:10,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:10,802 INFO L93 Difference]: Finished difference Result 11454 states and 16459 transitions. [2022-11-16 11:07:10,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:10,803 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 [2022-11-16 11:07:10,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:10,842 INFO L225 Difference]: With dead ends: 11454 [2022-11-16 11:07:10,842 INFO L226 Difference]: Without dead ends: 11451 [2022-11-16 11:07:10,850 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 [2022-11-16 11:07:10,851 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 [2022-11-16 11:07:10,851 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] [2022-11-16 11:07:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11451 states. [2022-11-16 11:07:11,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11451 to 11451. [2022-11-16 11:07:11,801 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) [2022-11-16 11:07:11,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11451 states to 11451 states and 16456 transitions. [2022-11-16 11:07:11,846 INFO L78 Accepts]: Start accepts. Automaton has 11451 states and 16456 transitions. Word has length 102 [2022-11-16 11:07:11,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:11,847 INFO L495 AbstractCegarLoop]: Abstraction has 11451 states and 16456 transitions. [2022-11-16 11:07:11,847 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) [2022-11-16 11:07:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 11451 states and 16456 transitions. [2022-11-16 11:07:11,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 11:07:11,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:11,849 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] [2022-11-16 11:07:11,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:12,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:07:12,052 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:12,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:12,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1411364013, now seen corresponding path program 1 times [2022-11-16 11:07:12,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:12,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270640521] [2022-11-16 11:07:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:12,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:07:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:07:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:07:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:07:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:07:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:07:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:07:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:07:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:07:13,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:13,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270640521] [2022-11-16 11:07:13,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270640521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:13,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944044715] [2022-11-16 11:07:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:13,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:13,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:13,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:13,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:07:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:15,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 3976 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:07:15,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:07:16,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:16,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944044715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:16,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:16,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:07:16,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889667016] [2022-11-16 11:07:16,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:16,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:16,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:16,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:16,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:07:16,400 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) [2022-11-16 11:07:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:17,307 INFO L93 Difference]: Finished difference Result 11453 states and 16457 transitions. [2022-11-16 11:07:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:17,313 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 [2022-11-16 11:07:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:17,354 INFO L225 Difference]: With dead ends: 11453 [2022-11-16 11:07:17,354 INFO L226 Difference]: Without dead ends: 11429 [2022-11-16 11:07:17,363 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 [2022-11-16 11:07:17,363 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 [2022-11-16 11:07:17,364 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] [2022-11-16 11:07:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11429 states. [2022-11-16 11:07:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11429 to 11429. [2022-11-16 11:07:18,350 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) [2022-11-16 11:07:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11429 states to 11429 states and 16430 transitions. [2022-11-16 11:07:18,402 INFO L78 Accepts]: Start accepts. Automaton has 11429 states and 16430 transitions. Word has length 103 [2022-11-16 11:07:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:18,402 INFO L495 AbstractCegarLoop]: Abstraction has 11429 states and 16430 transitions. [2022-11-16 11:07:18,403 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) [2022-11-16 11:07:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 11429 states and 16430 transitions. [2022-11-16 11:07:18,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 11:07:18,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:18,406 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] [2022-11-16 11:07:18,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:18,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:07:18,610 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2142177319, now seen corresponding path program 1 times [2022-11-16 11:07:18,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:18,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392486868] [2022-11-16 11:07:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:18,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:19,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:07:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:07:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:07:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:07:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:07:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:07:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:07:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:07:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:07:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:07:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:07:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:07:20,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:20,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392486868] [2022-11-16 11:07:20,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392486868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:20,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861534016] [2022-11-16 11:07:20,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:20,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:20,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:20,365 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:20,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:07:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:22,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 4114 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:07:22,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:07:22,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:22,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861534016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:22,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:22,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-16 11:07:22,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402352162] [2022-11-16 11:07:22,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:22,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:07:22,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:22,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:07:22,947 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) [2022-11-16 11:07:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:24,078 INFO L93 Difference]: Finished difference Result 23176 states and 33380 transitions. [2022-11-16 11:07:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:07:24,079 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 [2022-11-16 11:07:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:24,120 INFO L225 Difference]: With dead ends: 23176 [2022-11-16 11:07:24,120 INFO L226 Difference]: Without dead ends: 11750 [2022-11-16 11:07:24,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:07:24,171 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, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:24,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 21960 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:07:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11750 states. [2022-11-16 11:07:25,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11750 to 11433. [2022-11-16 11:07:25,228 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) [2022-11-16 11:07:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11433 states to 11433 states and 16434 transitions. [2022-11-16 11:07:25,273 INFO L78 Accepts]: Start accepts. Automaton has 11433 states and 16434 transitions. Word has length 123 [2022-11-16 11:07:25,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:25,274 INFO L495 AbstractCegarLoop]: Abstraction has 11433 states and 16434 transitions. [2022-11-16 11:07:25,274 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) [2022-11-16 11:07:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 11433 states and 16434 transitions. [2022-11-16 11:07:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 11:07:25,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:25,276 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] [2022-11-16 11:07:25,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:25,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:07:25,480 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:25,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:25,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1894030825, now seen corresponding path program 1 times [2022-11-16 11:07:25,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:25,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468725028] [2022-11-16 11:07:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:25,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:07:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:07:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:07:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:07:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:07:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:07:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:07:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:07:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:07:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:07:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:26,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 11:07:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:07:27,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:27,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468725028] [2022-11-16 11:07:27,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468725028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:27,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224893631] [2022-11-16 11:07:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:27,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:27,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:27,005 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:27,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:07:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:29,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 4115 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:07:29,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-16 11:07:29,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:29,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224893631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:29,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:29,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-11-16 11:07:29,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28528794] [2022-11-16 11:07:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:29,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:07:29,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:07:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:07:29,647 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) [2022-11-16 11:07:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:31,150 INFO L93 Difference]: Finished difference Result 22869 states and 32873 transitions. [2022-11-16 11:07:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:07:31,150 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 [2022-11-16 11:07:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:31,200 INFO L225 Difference]: With dead ends: 22869 [2022-11-16 11:07:31,200 INFO L226 Difference]: Without dead ends: 11429 [2022-11-16 11:07:31,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:07:31,250 INFO L413 NwaCegarLoop]: 7203 mSDtfsCounter, 10 mSDsluCounter, 28800 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:31,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 36003 Invalid, 28 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:07:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11429 states. [2022-11-16 11:07:32,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11429 to 11429. [2022-11-16 11:07:32,311 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) [2022-11-16 11:07:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11429 states to 11429 states and 16426 transitions. [2022-11-16 11:07:32,359 INFO L78 Accepts]: Start accepts. Automaton has 11429 states and 16426 transitions. Word has length 123 [2022-11-16 11:07:32,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:32,359 INFO L495 AbstractCegarLoop]: Abstraction has 11429 states and 16426 transitions. [2022-11-16 11:07:32,360 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) [2022-11-16 11:07:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 11429 states and 16426 transitions. [2022-11-16 11:07:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-16 11:07:32,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:32,362 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] [2022-11-16 11:07:32,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:32,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:32,563 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash -413663426, now seen corresponding path program 1 times [2022-11-16 11:07:32,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:32,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148540444] [2022-11-16 11:07:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:32,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:33,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:07:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:07:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:07:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:07:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:07:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:07:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:07:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:07:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-16 11:07:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 11:07:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-16 11:07:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-16 11:07:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:34,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148540444] [2022-11-16 11:07:34,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148540444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:34,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368836253] [2022-11-16 11:07:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:34,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:34,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:34,209 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:34,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 11:07:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:36,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 4146 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:07:36,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-16 11:07:36,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:36,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368836253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:36,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:36,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-16 11:07:36,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107340868] [2022-11-16 11:07:36,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:36,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:36,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:07:36,737 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) [2022-11-16 11:07:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:37,666 INFO L93 Difference]: Finished difference Result 11431 states and 16427 transitions. [2022-11-16 11:07:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:37,667 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 [2022-11-16 11:07:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:37,704 INFO L225 Difference]: With dead ends: 11431 [2022-11-16 11:07:37,704 INFO L226 Difference]: Without dead ends: 11428 [2022-11-16 11:07:37,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:07:37,713 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 [2022-11-16 11:07:37,713 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] [2022-11-16 11:07:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11428 states. [2022-11-16 11:07:38,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11428 to 11428. [2022-11-16 11:07:38,759 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) [2022-11-16 11:07:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11428 states to 11428 states and 16423 transitions. [2022-11-16 11:07:38,803 INFO L78 Accepts]: Start accepts. Automaton has 11428 states and 16423 transitions. Word has length 125 [2022-11-16 11:07:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:38,804 INFO L495 AbstractCegarLoop]: Abstraction has 11428 states and 16423 transitions. [2022-11-16 11:07:38,804 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) [2022-11-16 11:07:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 11428 states and 16423 transitions. [2022-11-16 11:07:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-16 11:07:38,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:38,809 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] [2022-11-16 11:07:38,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:39,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:39,010 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:39,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:39,010 INFO L85 PathProgramCache]: Analyzing trace with hash -953943588, now seen corresponding path program 1 times [2022-11-16 11:07:39,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:39,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099497222] [2022-11-16 11:07:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:39,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:07:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:07:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:07:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:07:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:07:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:07:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:07:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:07:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 11:07:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 11:07:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-16 11:07:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-16 11:07:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:07:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 11:07:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:07:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-16 11:07:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-16 11:07:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-16 11:07:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 11:07:41,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099497222] [2022-11-16 11:07:41,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099497222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767538946] [2022-11-16 11:07:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:41,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:41,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:41,318 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:41,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 11:07:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:43,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 4676 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:43,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-16 11:07:44,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:44,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767538946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:44,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:44,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-16 11:07:44,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978978851] [2022-11-16 11:07:44,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:44,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:44,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:44,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:44,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:07:44,021 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) [2022-11-16 11:07:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:45,406 INFO L93 Difference]: Finished difference Result 25830 states and 36595 transitions. [2022-11-16 11:07:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:45,407 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 [2022-11-16 11:07:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:45,462 INFO L225 Difference]: With dead ends: 25830 [2022-11-16 11:07:45,463 INFO L226 Difference]: Without dead ends: 14405 [2022-11-16 11:07:45,502 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 [2022-11-16 11:07:45,503 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 [2022-11-16 11:07:45,503 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] [2022-11-16 11:07:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14405 states. [2022-11-16 11:07:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14405 to 14401. [2022-11-16 11:07:46,876 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) [2022-11-16 11:07:46,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14401 states to 14401 states and 20170 transitions. [2022-11-16 11:07:46,930 INFO L78 Accepts]: Start accepts. Automaton has 14401 states and 20170 transitions. Word has length 198 [2022-11-16 11:07:46,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:46,930 INFO L495 AbstractCegarLoop]: Abstraction has 14401 states and 20170 transitions. [2022-11-16 11:07:46,930 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) [2022-11-16 11:07:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 14401 states and 20170 transitions. [2022-11-16 11:07:46,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-16 11:07:46,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:46,935 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] [2022-11-16 11:07:46,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:47,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 11:07:47,155 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:47,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1857240795, now seen corresponding path program 1 times [2022-11-16 11:07:47,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:47,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416682830] [2022-11-16 11:07:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:47,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:07:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:07:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:07:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:07:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:07:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:07:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:07:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:07:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:07:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-16 11:07:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 11:07:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-16 11:07:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-16 11:07:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-16 11:07:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-16 11:07:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-16 11:07:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-16 11:07:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-16 11:07:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:07:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 11:07:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:07:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-16 11:07:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-11-16 11:07:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-11-16 11:07:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-16 11:07:49,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416682830] [2022-11-16 11:07:49,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416682830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486563670] [2022-11-16 11:07:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:49,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:49,111 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:49,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 11:07:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:51,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 4857 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:07:51,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-16 11:07:52,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:52,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486563670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:52,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:52,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-16 11:07:52,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227978968] [2022-11-16 11:07:52,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:52,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:52,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:52,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:52,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:07:52,085 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) [2022-11-16 11:07:53,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:53,634 INFO L93 Difference]: Finished difference Result 14403 states and 20171 transitions. [2022-11-16 11:07:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:53,635 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 [2022-11-16 11:07:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:53,687 INFO L225 Difference]: With dead ends: 14403 [2022-11-16 11:07:53,687 INFO L226 Difference]: Without dead ends: 14400 [2022-11-16 11:07:53,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:07:53,698 INFO L413 NwaCegarLoop]: 7202 mSDtfsCounter, 146 mSDsluCounter, 7054 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:53,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 14256 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:07:53,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14400 states. [2022-11-16 11:07:54,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14400 to 14400. [2022-11-16 11:07:54,985 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) [2022-11-16 11:07:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14400 states to 14400 states and 20161 transitions. [2022-11-16 11:07:55,039 INFO L78 Accepts]: Start accepts. Automaton has 14400 states and 20161 transitions. Word has length 242 [2022-11-16 11:07:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:55,040 INFO L495 AbstractCegarLoop]: Abstraction has 14400 states and 20161 transitions. [2022-11-16 11:07:55,040 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) [2022-11-16 11:07:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 14400 states and 20161 transitions. [2022-11-16 11:07:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2022-11-16 11:07:55,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:55,087 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] [2022-11-16 11:07:55,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:55,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:55,303 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:55,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1838212805, now seen corresponding path program 1 times [2022-11-16 11:07:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:55,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835076858] [2022-11-16 11:07:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:55,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:55,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:55,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835076858] [2022-11-16 11:07:55,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:07:55,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233081078] [2022-11-16 11:07:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:55,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:55,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:55,677 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:55,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 11:07:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:58,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 6945 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:58,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-11-16 11:07:58,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:58,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233081078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:58,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:58,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:07:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173382716] [2022-11-16 11:07:58,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:58,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:58,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:58,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:58,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:07:58,969 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) [2022-11-16 11:08:00,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:00,326 INFO L93 Difference]: Finished difference Result 28809 states and 40353 transitions. [2022-11-16 11:08:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:00,327 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 [2022-11-16 11:08:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:00,432 INFO L225 Difference]: With dead ends: 28809 [2022-11-16 11:08:00,433 INFO L226 Difference]: Without dead ends: 14412 [2022-11-16 11:08:00,480 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 [2022-11-16 11:08:00,481 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 [2022-11-16 11:08:00,481 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] [2022-11-16 11:08:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14412 states. [2022-11-16 11:08:01,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14412 to 14404. [2022-11-16 11:08:01,932 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) [2022-11-16 11:08:01,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14404 states to 14404 states and 20165 transitions. [2022-11-16 11:08:01,993 INFO L78 Accepts]: Start accepts. Automaton has 14404 states and 20165 transitions. Word has length 647 [2022-11-16 11:08:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:01,994 INFO L495 AbstractCegarLoop]: Abstraction has 14404 states and 20165 transitions. [2022-11-16 11:08:01,994 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) [2022-11-16 11:08:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 14404 states and 20165 transitions. [2022-11-16 11:08:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-11-16 11:08:02,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:02,042 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] [2022-11-16 11:08:02,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-16 11:08:02,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:02,267 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:02,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:02,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1742753300, now seen corresponding path program 1 times [2022-11-16 11:08:02,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:02,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761230437] [2022-11-16 11:08:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:02,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:02,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:02,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761230437] [2022-11-16 11:08:02,748 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:02,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74154118] [2022-11-16 11:08:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:02,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:02,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:02,751 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:02,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 11:08:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:06,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 6995 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:08:06,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-11-16 11:08:06,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:06,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74154118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:06,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:06,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:08:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816790185] [2022-11-16 11:08:06,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:06,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:06,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:06,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:06,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:06,320 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) [2022-11-16 11:08:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:07,687 INFO L93 Difference]: Finished difference Result 28829 states and 40383 transitions. [2022-11-16 11:08:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:07,688 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 [2022-11-16 11:08:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:07,748 INFO L225 Difference]: With dead ends: 28829 [2022-11-16 11:08:07,748 INFO L226 Difference]: Without dead ends: 14428 [2022-11-16 11:08:07,797 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 [2022-11-16 11:08:07,798 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 [2022-11-16 11:08:07,799 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] [2022-11-16 11:08:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14428 states. [2022-11-16 11:08:09,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14428 to 14408. [2022-11-16 11:08:09,230 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) [2022-11-16 11:08:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14408 states to 14408 states and 20169 transitions. [2022-11-16 11:08:09,289 INFO L78 Accepts]: Start accepts. Automaton has 14408 states and 20169 transitions. Word has length 658 [2022-11-16 11:08:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:09,290 INFO L495 AbstractCegarLoop]: Abstraction has 14408 states and 20169 transitions. [2022-11-16 11:08:09,290 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) [2022-11-16 11:08:09,291 INFO L276 IsEmpty]: Start isEmpty. Operand 14408 states and 20169 transitions. [2022-11-16 11:08:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2022-11-16 11:08:09,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:09,319 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] [2022-11-16 11:08:09,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:09,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:08:09,520 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:09,521 INFO L85 PathProgramCache]: Analyzing trace with hash -983767735, now seen corresponding path program 1 times [2022-11-16 11:08:09,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:09,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390852143] [2022-11-16 11:08:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:09,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:09,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:09,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390852143] [2022-11-16 11:08:09,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:09,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006723951] [2022-11-16 11:08:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:09,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:09,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:09,904 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:09,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 11:08:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:13,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 7002 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:08:13,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-16 11:08:13,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:13,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006723951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:13,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:13,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:08:13,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792872325] [2022-11-16 11:08:13,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:13,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:13,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:13,597 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) [2022-11-16 11:08:15,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:15,250 INFO L93 Difference]: Finished difference Result 28825 states and 40369 transitions. [2022-11-16 11:08:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:15,251 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 [2022-11-16 11:08:15,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:15,324 INFO L225 Difference]: With dead ends: 28825 [2022-11-16 11:08:15,324 INFO L226 Difference]: Without dead ends: 14420 [2022-11-16 11:08:15,382 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 [2022-11-16 11:08:15,383 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 [2022-11-16 11:08:15,383 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] [2022-11-16 11:08:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14420 states. [2022-11-16 11:08:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14420 to 14412. [2022-11-16 11:08:16,929 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) [2022-11-16 11:08:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14412 states to 14412 states and 20173 transitions. [2022-11-16 11:08:16,981 INFO L78 Accepts]: Start accepts. Automaton has 14412 states and 20173 transitions. Word has length 662 [2022-11-16 11:08:16,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:16,983 INFO L495 AbstractCegarLoop]: Abstraction has 14412 states and 20173 transitions. [2022-11-16 11:08:16,983 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) [2022-11-16 11:08:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand 14412 states and 20173 transitions. [2022-11-16 11:08:17,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-11-16 11:08:17,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:17,024 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] [2022-11-16 11:08:17,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-16 11:08:17,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 11:08:17,252 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:17,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:17,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1255928816, now seen corresponding path program 1 times [2022-11-16 11:08:17,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:17,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174718661] [2022-11-16 11:08:17,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:17,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:17,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174718661] [2022-11-16 11:08:17,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:17,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804643649] [2022-11-16 11:08:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:17,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:17,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:17,597 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:17,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 11:08:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:20,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 6752 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:08:20,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-16 11:08:20,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:20,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804643649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:20,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:20,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:08:20,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40945041] [2022-11-16 11:08:20,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:20,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:20,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:20,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:20,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:20,702 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) [2022-11-16 11:08:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:22,112 INFO L93 Difference]: Finished difference Result 28823 states and 40349 transitions. [2022-11-16 11:08:22,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:22,112 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 [2022-11-16 11:08:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:22,184 INFO L225 Difference]: With dead ends: 28823 [2022-11-16 11:08:22,184 INFO L226 Difference]: Without dead ends: 14414 [2022-11-16 11:08:22,381 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 [2022-11-16 11:08:22,381 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 [2022-11-16 11:08:22,382 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] [2022-11-16 11:08:22,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14414 states. [2022-11-16 11:08:23,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14414 to 14414. [2022-11-16 11:08:23,897 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) [2022-11-16 11:08:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14414 states to 14414 states and 20175 transitions. [2022-11-16 11:08:23,975 INFO L78 Accepts]: Start accepts. Automaton has 14414 states and 20175 transitions. Word has length 491 [2022-11-16 11:08:23,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:23,976 INFO L495 AbstractCegarLoop]: Abstraction has 14414 states and 20175 transitions. [2022-11-16 11:08:23,977 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) [2022-11-16 11:08:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 14414 states and 20175 transitions. [2022-11-16 11:08:24,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2022-11-16 11:08:24,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:24,018 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] [2022-11-16 11:08:24,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:24,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 11:08:24,219 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:24,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:24,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1327364126, now seen corresponding path program 1 times [2022-11-16 11:08:24,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:24,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195390156] [2022-11-16 11:08:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:24,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:24,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:24,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195390156] [2022-11-16 11:08:24,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:24,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335538210] [2022-11-16 11:08:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:24,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:24,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:24,615 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:24,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 11:08:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:28,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 7729 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:08:28,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2022-11-16 11:08:28,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:28,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335538210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:28,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:28,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:08:28,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300778962] [2022-11-16 11:08:28,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:28,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:28,156 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) [2022-11-16 11:08:31,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:31,225 INFO L93 Difference]: Finished difference Result 40117 states and 56560 transitions. [2022-11-16 11:08:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:08:31,226 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 [2022-11-16 11:08:31,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:31,321 INFO L225 Difference]: With dead ends: 40117 [2022-11-16 11:08:31,321 INFO L226 Difference]: Without dead ends: 25706 [2022-11-16 11:08:31,363 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 [2022-11-16 11:08:31,364 INFO L413 NwaCegarLoop]: 14274 mSDtfsCounter, 7194 mSDsluCounter, 21350 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:31,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7194 Valid, 35624 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:08:31,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25706 states. [2022-11-16 11:08:33,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25706 to 14418. [2022-11-16 11:08:33,444 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) [2022-11-16 11:08:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14418 states to 14418 states and 20179 transitions. [2022-11-16 11:08:33,500 INFO L78 Accepts]: Start accepts. Automaton has 14418 states and 20179 transitions. Word has length 767 [2022-11-16 11:08:33,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:33,501 INFO L495 AbstractCegarLoop]: Abstraction has 14418 states and 20179 transitions. [2022-11-16 11:08:33,501 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) [2022-11-16 11:08:33,501 INFO L276 IsEmpty]: Start isEmpty. Operand 14418 states and 20179 transitions. [2022-11-16 11:08:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-11-16 11:08:33,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:33,526 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] [2022-11-16 11:08:33,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-16 11:08:33,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 11:08:33,727 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1252453638, now seen corresponding path program 1 times [2022-11-16 11:08:33,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:33,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327524359] [2022-11-16 11:08:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:33,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:34,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:34,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327524359] [2022-11-16 11:08:34,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:34,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184226075] [2022-11-16 11:08:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:34,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:34,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:34,233 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:34,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 11:08:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:37,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 6764 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:08:37,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-16 11:08:38,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:38,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184226075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:38,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:38,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:08:38,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034170020] [2022-11-16 11:08:38,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:38,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:38,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:38,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:38,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:38,325 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) [2022-11-16 11:08:40,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:40,141 INFO L93 Difference]: Finished difference Result 28833 states and 40357 transitions. [2022-11-16 11:08:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:40,143 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 [2022-11-16 11:08:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:40,209 INFO L225 Difference]: With dead ends: 28833 [2022-11-16 11:08:40,210 INFO L226 Difference]: Without dead ends: 14418 [2022-11-16 11:08:40,256 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 [2022-11-16 11:08:40,256 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 [2022-11-16 11:08:40,257 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] [2022-11-16 11:08:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14418 states. [2022-11-16 11:08:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14418 to 14418. [2022-11-16 11:08:41,994 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) [2022-11-16 11:08:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14418 states to 14418 states and 20177 transitions. [2022-11-16 11:08:42,034 INFO L78 Accepts]: Start accepts. Automaton has 14418 states and 20177 transitions. Word has length 495 [2022-11-16 11:08:42,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:42,034 INFO L495 AbstractCegarLoop]: Abstraction has 14418 states and 20177 transitions. [2022-11-16 11:08:42,034 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) [2022-11-16 11:08:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 14418 states and 20177 transitions. [2022-11-16 11:08:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-11-16 11:08:42,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:42,057 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] [2022-11-16 11:08:42,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:42,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 11:08:42,257 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2051204573, now seen corresponding path program 1 times [2022-11-16 11:08:42,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:42,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989742746] [2022-11-16 11:08:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:42,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:42,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989742746] [2022-11-16 11:08:42,532 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:42,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246485247] [2022-11-16 11:08:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:42,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:42,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:42,534 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:42,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c78d3b2-aeca-4a91-89ef-9b05a65b1436/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 11:08:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:45,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 6913 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:08:45,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-16 11:08:45,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:45,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246485247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:45,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:45,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:08:45,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393967585] [2022-11-16 11:08:45,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:45,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:45,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:45,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:45,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:45,298 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)