./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa --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 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:57:29,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:57:29,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:57:29,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:57:29,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:57:29,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:57:29,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:57:29,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:57:29,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:57:29,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:57:29,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:57:29,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:57:29,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:57:29,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:57:29,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:57:29,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:57:29,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:57:29,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:57:29,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:57:29,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:57:29,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:57:29,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:57:29,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:57:29,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:57:29,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:57:29,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:57:29,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:57:29,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:57:29,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:57:29,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:57:29,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:57:29,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:57:29,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:57:29,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:57:29,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:57:29,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:57:29,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:57:29,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:57:29,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:57:29,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:57:29,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:57:29,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-07 00:57:29,599 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:57:29,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:57:29,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:57:29,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:57:29,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:57:29,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:57:29,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:57:29,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:57:29,601 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:57:29,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:57:29,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:57:29,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:57:29,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:57:29,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:57:29,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:57:29,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:57:29,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:57:29,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:57:29,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:57:29,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:57:29,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:57:29,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:57:29,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:57:29,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:57:29,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:57:29,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:57:29,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:57:29,605 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:57:29,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:57:29,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:57:29,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:57:29,605 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_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 [2021-12-07 00:57:29,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:57:29,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:57:29,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:57:29,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:57:29,821 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:57:29,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-12-07 00:57:29,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/data/864c59a0c/0065f2f7018d42e78582f8b4a1fcea77/FLAGe0ff5da92 [2021-12-07 00:57:30,513 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:57:30,514 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-12-07 00:57:30,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/data/864c59a0c/0065f2f7018d42e78582f8b4a1fcea77/FLAGe0ff5da92 [2021-12-07 00:57:30,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/data/864c59a0c/0065f2f7018d42e78582f8b4a1fcea77 [2021-12-07 00:57:30,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:57:30,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:57:30,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:57:30,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:57:30,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:57:30,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:57:30" (1/1) ... [2021-12-07 00:57:30,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2d2cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:30, skipping insertion in model container [2021-12-07 00:57:30,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:57:30" (1/1) ... [2021-12-07 00:57:30,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:57:31,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:57:32,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-12-07 00:57:32,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:57:32,284 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:57:32,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-12-07 00:57:32,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:57:32,612 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:57:32,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32 WrapperNode [2021-12-07 00:57:32,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:57:32,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:57:32,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:57:32,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:57:32,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (1/1) ... [2021-12-07 00:57:32,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (1/1) ... [2021-12-07 00:57:32,786 INFO L137 Inliner]: procedures = 226, calls = 1428, calls flagged for inlining = 121, calls inlined = 118, statements flattened = 3761 [2021-12-07 00:57:32,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:57:32,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:57:32,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:57:32,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:57:32,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (1/1) ... [2021-12-07 00:57:32,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (1/1) ... [2021-12-07 00:57:32,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (1/1) ... [2021-12-07 00:57:32,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (1/1) ... [2021-12-07 00:57:32,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (1/1) ... [2021-12-07 00:57:32,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (1/1) ... [2021-12-07 00:57:32,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (1/1) ... [2021-12-07 00:57:32,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:57:32,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:57:32,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:57:32,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:57:32,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (1/1) ... [2021-12-07 00:57:32,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:57:32,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:57:32,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:57:32,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:57:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_get_drvinfo [2021-12-07 00:57:32,973 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_get_drvinfo [2021-12-07 00:57:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2021-12-07 00:57:32,973 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2021-12-07 00:57:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-07 00:57:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-07 00:57:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-07 00:57:32,973 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-07 00:57:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-07 00:57:32,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-07 00:57:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-07 00:57:32,974 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-07 00:57:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-07 00:57:32,974 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-07 00:57:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-07 00:57:32,974 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-07 00:57:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-07 00:57:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-07 00:57:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-07 00:57:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-07 00:57:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-12-07 00:57:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-12-07 00:57:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-07 00:57:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-07 00:57:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-07 00:57:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-07 00:57:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-07 00:57:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-07 00:57:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-07 00:57:32,976 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-07 00:57:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 00:57:32,976 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 00:57:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-07 00:57:32,976 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-07 00:57:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-07 00:57:32,976 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-07 00:57:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-07 00:57:32,976 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-07 00:57:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:57:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-07 00:57:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-07 00:57:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-07 00:57:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-07 00:57:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 00:57:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-07 00:57:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-07 00:57:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-07 00:57:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-07 00:57:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-07 00:57:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-07 00:57:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-07 00:57:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-07 00:57:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-07 00:57:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-07 00:57:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:57:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-07 00:57:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-07 00:57:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 00:57:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-07 00:57:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-07 00:57:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-07 00:57:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-07 00:57:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-07 00:57:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-07 00:57:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-07 00:57:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-07 00:57:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-07 00:57:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-07 00:57:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-07 00:57:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-07 00:57:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-07 00:57:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-07 00:57:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:57:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-12-07 00:57:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-12-07 00:57:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-07 00:57:32,998 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-07 00:57:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-07 00:57:32,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-07 00:57:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_ioctl [2021-12-07 00:57:32,998 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_ioctl [2021-12-07 00:57:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-07 00:57:32,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-07 00:57:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-07 00:57:32,999 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-07 00:57:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:57:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-07 00:57:32,999 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-07 00:57:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-07 00:57:32,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-07 00:57:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-07 00:57:32,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-07 00:57:33,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:57:33,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-07 00:57:33,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-07 00:57:33,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:57:33,000 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-07 00:57:33,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-07 00:57:33,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 00:57:33,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-07 00:57:33,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-07 00:57:33,001 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_get_stats [2021-12-07 00:57:33,001 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_get_stats [2021-12-07 00:57:33,001 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-12-07 00:57:33,001 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-12-07 00:57:33,001 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-07 00:57:33,001 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-07 00:57:33,001 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_tx_timeout [2021-12-07 00:57:33,002 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_tx_timeout [2021-12-07 00:57:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-12-07 00:57:33,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-12-07 00:57:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-07 00:57:33,002 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-07 00:57:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-12-07 00:57:33,002 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-12-07 00:57:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-07 00:57:33,003 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-07 00:57:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-07 00:57:33,003 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-07 00:57:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:57:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-12-07 00:57:33,003 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-12-07 00:57:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-12-07 00:57:33,003 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-12-07 00:57:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-07 00:57:33,004 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-07 00:57:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-12-07 00:57:33,004 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-12-07 00:57:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:57:33,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:57:33,378 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:57:33,380 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:57:33,891 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-07 00:57:35,065 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:57:35,081 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:57:35,081 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-07 00:57:35,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:57:35 BoogieIcfgContainer [2021-12-07 00:57:35,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:57:35,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:57:35,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:57:35,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:57:35,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:57:30" (1/3) ... [2021-12-07 00:57:35,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252f1bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:57:35, skipping insertion in model container [2021-12-07 00:57:35,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:57:32" (2/3) ... [2021-12-07 00:57:35,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252f1bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:57:35, skipping insertion in model container [2021-12-07 00:57:35,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:57:35" (3/3) ... [2021-12-07 00:57:35,090 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-12-07 00:57:35,094 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:57:35,094 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:57:35,134 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:57:35,139 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:57:35,139 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:57:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 1175 states, 832 states have (on average 1.3353365384615385) internal successors, (1111), 860 states have internal predecessors, (1111), 285 states have call successors, (285), 57 states have call predecessors, (285), 56 states have return successors, (277), 267 states have call predecessors, (277), 277 states have call successors, (277) [2021-12-07 00:57:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-07 00:57:35,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:57:35,197 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 00:57:35,198 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:57:35,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:57:35,202 INFO L85 PathProgramCache]: Analyzing trace with hash 112228501, now seen corresponding path program 1 times [2021-12-07 00:57:35,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:57:35,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134260399] [2021-12-07 00:57:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:57:35,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:57:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:57:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:57:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:57:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:57:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:57:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:57:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:57:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:57:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:57:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:57:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:57:35,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:57:35,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134260399] [2021-12-07 00:57:35,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134260399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:57:35,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:57:35,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:57:35,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396775323] [2021-12-07 00:57:35,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:57:35,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:57:35,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:57:35,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:57:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:57:35,879 INFO L87 Difference]: Start difference. First operand has 1175 states, 832 states have (on average 1.3353365384615385) internal successors, (1111), 860 states have internal predecessors, (1111), 285 states have call successors, (285), 57 states have call predecessors, (285), 56 states have return successors, (277), 267 states have call predecessors, (277), 277 states have call successors, (277) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-07 00:57:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:57:37,523 INFO L93 Difference]: Finished difference Result 2468 states and 3573 transitions. [2021-12-07 00:57:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:57:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 162 [2021-12-07 00:57:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:57:37,546 INFO L225 Difference]: With dead ends: 2468 [2021-12-07 00:57:37,546 INFO L226 Difference]: Without dead ends: 1275 [2021-12-07 00:57:37,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:57:37,560 INFO L933 BasicCegarLoop]: 1579 mSDtfsCounter, 737 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:57:37,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 2958 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-07 00:57:37,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-12-07 00:57:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1152. [2021-12-07 00:57:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 819 states have (on average 1.321123321123321) internal successors, (1082), 837 states have internal predecessors, (1082), 277 states have call successors, (277), 56 states have call predecessors, (277), 55 states have return successors, (276), 266 states have call predecessors, (276), 276 states have call successors, (276) [2021-12-07 00:57:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1635 transitions. [2021-12-07 00:57:37,682 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1635 transitions. Word has length 162 [2021-12-07 00:57:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:57:37,682 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 1635 transitions. [2021-12-07 00:57:37,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-07 00:57:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1635 transitions. [2021-12-07 00:57:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-07 00:57:37,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:57:37,691 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 00:57:37,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:57:37,691 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:57:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:57:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1911430239, now seen corresponding path program 1 times [2021-12-07 00:57:37,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:57:37,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684791139] [2021-12-07 00:57:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:57:37,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:57:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:57:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:57:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:57:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:57:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:57:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:37,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:57:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:38,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:38,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:57:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:57:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:38,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:38,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:57:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:57:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:57:38,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:57:38,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684791139] [2021-12-07 00:57:38,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684791139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:57:38,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:57:38,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:57:38,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878518514] [2021-12-07 00:57:38,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:57:38,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:57:38,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:57:38,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:57:38,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:57:38,069 INFO L87 Difference]: Start difference. First operand 1152 states and 1635 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-07 00:57:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:57:40,534 INFO L93 Difference]: Finished difference Result 3201 states and 4540 transitions. [2021-12-07 00:57:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:57:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 162 [2021-12-07 00:57:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:57:40,552 INFO L225 Difference]: With dead ends: 3201 [2021-12-07 00:57:40,553 INFO L226 Difference]: Without dead ends: 2073 [2021-12-07 00:57:40,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:57:40,559 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 2176 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 1278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 4269 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1278 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:57:40,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2277 Valid, 4269 Invalid, 2898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1278 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:57:40,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2021-12-07 00:57:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1798. [2021-12-07 00:57:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1292 states have (on average 1.3088235294117647) internal successors, (1691), 1319 states have internal predecessors, (1691), 407 states have call successors, (407), 99 states have call predecessors, (407), 98 states have return successors, (406), 392 states have call predecessors, (406), 406 states have call successors, (406) [2021-12-07 00:57:40,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2504 transitions. [2021-12-07 00:57:40,643 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2504 transitions. Word has length 162 [2021-12-07 00:57:40,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:57:40,643 INFO L470 AbstractCegarLoop]: Abstraction has 1798 states and 2504 transitions. [2021-12-07 00:57:40,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-07 00:57:40,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2504 transitions. [2021-12-07 00:57:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-07 00:57:40,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:57:40,647 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 00:57:40,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:57:40,647 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:57:40,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:57:40,648 INFO L85 PathProgramCache]: Analyzing trace with hash -41870992, now seen corresponding path program 1 times [2021-12-07 00:57:40,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:57:40,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983487710] [2021-12-07 00:57:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:57:40,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:57:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:57:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:57:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:57:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:57:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:57:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:57:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:57:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:57:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-07 00:57:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-07 00:57:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:57:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:57:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:57:41,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:57:41,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983487710] [2021-12-07 00:57:41,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983487710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:57:41,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:57:41,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:57:41,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633479317] [2021-12-07 00:57:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:57:41,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:57:41,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:57:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:57:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:57:41,019 INFO L87 Difference]: Start difference. First operand 1798 states and 2504 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-07 00:57:44,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:57:44,865 INFO L93 Difference]: Finished difference Result 5852 states and 8264 transitions. [2021-12-07 00:57:44,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:57:44,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 173 [2021-12-07 00:57:44,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:57:44,888 INFO L225 Difference]: With dead ends: 5852 [2021-12-07 00:57:44,888 INFO L226 Difference]: Without dead ends: 4082 [2021-12-07 00:57:44,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:57:44,896 INFO L933 BasicCegarLoop]: 1824 mSDtfsCounter, 3402 mSDsluCounter, 7245 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 2318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3630 SdHoareTripleChecker+Valid, 9069 SdHoareTripleChecker+Invalid, 6592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2318 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:57:44,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3630 Valid, 9069 Invalid, 6592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2318 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-07 00:57:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-12-07 00:57:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 3573. [2021-12-07 00:57:45,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3573 states, 2572 states have (on average 1.3083203732503887) internal successors, (3365), 2626 states have internal predecessors, (3365), 804 states have call successors, (804), 197 states have call predecessors, (804), 196 states have return successors, (803), 775 states have call predecessors, (803), 803 states have call successors, (803) [2021-12-07 00:57:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4972 transitions. [2021-12-07 00:57:45,039 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4972 transitions. Word has length 173 [2021-12-07 00:57:45,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:57:45,040 INFO L470 AbstractCegarLoop]: Abstraction has 3573 states and 4972 transitions. [2021-12-07 00:57:45,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-07 00:57:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4972 transitions. [2021-12-07 00:57:45,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-07 00:57:45,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:57:45,043 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 00:57:45,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:57:45,044 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:57:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:57:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1008660019, now seen corresponding path program 1 times [2021-12-07 00:57:45,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:57:45,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628282374] [2021-12-07 00:57:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:57:45,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:57:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:57:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:57:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:57:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:57:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:57:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:57:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:57:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:57:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-07 00:57:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-07 00:57:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-07 00:57:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-07 00:57:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:57:45,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:57:45,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628282374] [2021-12-07 00:57:45,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628282374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:57:45,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:57:45,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:57:45,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801556817] [2021-12-07 00:57:45,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:57:45,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:57:45,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:57:45,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:57:45,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:57:45,475 INFO L87 Difference]: Start difference. First operand 3573 states and 4972 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-07 00:57:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:57:48,836 INFO L93 Difference]: Finished difference Result 11689 states and 16480 transitions. [2021-12-07 00:57:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:57:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 175 [2021-12-07 00:57:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:57:48,877 INFO L225 Difference]: With dead ends: 11689 [2021-12-07 00:57:48,877 INFO L226 Difference]: Without dead ends: 8144 [2021-12-07 00:57:48,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:57:48,890 INFO L933 BasicCegarLoop]: 1712 mSDtfsCounter, 3425 mSDsluCounter, 6170 mSDsCounter, 0 mSdLazyCounter, 3573 mSolverCounterSat, 2444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3654 SdHoareTripleChecker+Valid, 7882 SdHoareTripleChecker+Invalid, 6017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2444 IncrementalHoareTripleChecker+Valid, 3573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:57:48,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3654 Valid, 7882 Invalid, 6017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2444 Valid, 3573 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-07 00:57:48,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2021-12-07 00:57:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 7135. [2021-12-07 00:57:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 5142 states have (on average 1.3076623881758072) internal successors, (6724), 5250 states have internal predecessors, (6724), 1598 states have call successors, (1598), 395 states have call predecessors, (1598), 394 states have return successors, (1597), 1541 states have call predecessors, (1597), 1597 states have call successors, (1597) [2021-12-07 00:57:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9919 transitions. [2021-12-07 00:57:49,159 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9919 transitions. Word has length 175 [2021-12-07 00:57:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:57:49,159 INFO L470 AbstractCegarLoop]: Abstraction has 7135 states and 9919 transitions. [2021-12-07 00:57:49,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-07 00:57:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9919 transitions. [2021-12-07 00:57:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-07 00:57:49,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:57:49,162 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:57:49,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:57:49,162 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:57:49,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:57:49,163 INFO L85 PathProgramCache]: Analyzing trace with hash 558339437, now seen corresponding path program 1 times [2021-12-07 00:57:49,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:57:49,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296433594] [2021-12-07 00:57:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:57:49,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:57:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:57:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:57:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:57:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:57:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:57:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:57:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:57:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:57:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:57:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-07 00:57:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:57:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:57:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:57:49,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:57:49,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296433594] [2021-12-07 00:57:49,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296433594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:57:49,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:57:49,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:57:49,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633945022] [2021-12-07 00:57:49,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:57:49,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:57:49,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:57:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:57:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:57:49,502 INFO L87 Difference]: Start difference. First operand 7135 states and 9919 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-07 00:57:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:57:52,785 INFO L93 Difference]: Finished difference Result 23383 states and 32908 transitions. [2021-12-07 00:57:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:57:52,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 172 [2021-12-07 00:57:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:57:52,860 INFO L225 Difference]: With dead ends: 23383 [2021-12-07 00:57:52,860 INFO L226 Difference]: Without dead ends: 16276 [2021-12-07 00:57:52,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:57:52,882 INFO L933 BasicCegarLoop]: 1817 mSDtfsCounter, 3427 mSDsluCounter, 6557 mSDsCounter, 0 mSdLazyCounter, 3625 mSolverCounterSat, 2328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3657 SdHoareTripleChecker+Valid, 8374 SdHoareTripleChecker+Invalid, 5953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2328 IncrementalHoareTripleChecker+Valid, 3625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:57:52,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3657 Valid, 8374 Invalid, 5953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2328 Valid, 3625 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-07 00:57:52,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16276 states. [2021-12-07 00:57:53,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16276 to 14187. [2021-12-07 00:57:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14187 states, 10222 states have (on average 1.3081588730189786) internal successors, (13372), 10462 states have internal predecessors, (13372), 3178 states have call successors, (3178), 787 states have call predecessors, (3178), 786 states have return successors, (3177), 3041 states have call predecessors, (3177), 3177 states have call successors, (3177) [2021-12-07 00:57:53,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14187 states to 14187 states and 19727 transitions. [2021-12-07 00:57:53,387 INFO L78 Accepts]: Start accepts. Automaton has 14187 states and 19727 transitions. Word has length 172 [2021-12-07 00:57:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:57:53,388 INFO L470 AbstractCegarLoop]: Abstraction has 14187 states and 19727 transitions. [2021-12-07 00:57:53,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-07 00:57:53,388 INFO L276 IsEmpty]: Start isEmpty. Operand 14187 states and 19727 transitions. [2021-12-07 00:57:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-07 00:57:53,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:57:53,393 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 00:57:53,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:57:53,394 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:57:53,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:57:53,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2098159338, now seen corresponding path program 1 times [2021-12-07 00:57:53,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:57:53,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377906694] [2021-12-07 00:57:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:57:53,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:57:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:57:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:57:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:57:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:57:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:57:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:57:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:57:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:57:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-07 00:57:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-07 00:57:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-07 00:57:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-07 00:57:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:57:53,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:57:53,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377906694] [2021-12-07 00:57:53,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377906694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:57:53,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:57:53,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:57:53,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057661031] [2021-12-07 00:57:53,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:57:53,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:57:53,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:57:53,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:57:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:57:53,753 INFO L87 Difference]: Start difference. First operand 14187 states and 19727 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-07 00:57:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:57:57,637 INFO L93 Difference]: Finished difference Result 45841 states and 64452 transitions. [2021-12-07 00:57:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:57:57,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 174 [2021-12-07 00:57:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:57:57,743 INFO L225 Difference]: With dead ends: 45841 [2021-12-07 00:57:57,743 INFO L226 Difference]: Without dead ends: 31682 [2021-12-07 00:57:57,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:57:57,790 INFO L933 BasicCegarLoop]: 1711 mSDtfsCounter, 3424 mSDsluCounter, 6186 mSDsCounter, 0 mSdLazyCounter, 3559 mSolverCounterSat, 2433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3654 SdHoareTripleChecker+Valid, 7897 SdHoareTripleChecker+Invalid, 5992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2433 IncrementalHoareTripleChecker+Valid, 3559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:57:57,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3654 Valid, 7897 Invalid, 5992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2433 Valid, 3559 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-07 00:57:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31682 states. [2021-12-07 00:57:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31682 to 27853. [2021-12-07 00:57:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27853 states, 20068 states have (on average 1.3072553318716365) internal successors, (26234), 20532 states have internal predecessors, (26234), 6229 states have call successors, (6229), 1556 states have call predecessors, (6229), 1555 states have return successors, (6228), 5968 states have call predecessors, (6228), 6228 states have call successors, (6228) [2021-12-07 00:57:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27853 states to 27853 states and 38691 transitions. [2021-12-07 00:57:58,673 INFO L78 Accepts]: Start accepts. Automaton has 27853 states and 38691 transitions. Word has length 174 [2021-12-07 00:57:58,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:57:58,674 INFO L470 AbstractCegarLoop]: Abstraction has 27853 states and 38691 transitions. [2021-12-07 00:57:58,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-07 00:57:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 27853 states and 38691 transitions. [2021-12-07 00:57:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-07 00:57:58,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:57:58,678 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 00:57:58,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:57:58,678 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:57:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:57:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1967613030, now seen corresponding path program 1 times [2021-12-07 00:57:58,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:57:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308693764] [2021-12-07 00:57:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:57:58,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:57:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:57:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:57:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:57:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:57:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:57:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:57:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:57:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:57:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:57:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:57:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:58,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:57:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:57:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:59,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-07 00:57:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:59,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-07 00:57:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:59,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-07 00:57:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-12-07 00:57:59,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:57:59,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308693764] [2021-12-07 00:57:59,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308693764] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:57:59,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941197367] [2021-12-07 00:57:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:57:59,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:57:59,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:57:59,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:57:59,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:57:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:57:59,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:57:59,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:57:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-12-07 00:57:59,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:57:59,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941197367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:57:59,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:57:59,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2021-12-07 00:57:59,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408797967] [2021-12-07 00:57:59,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:57:59,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:57:59,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:57:59,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:57:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:57:59,824 INFO L87 Difference]: Start difference. First operand 27853 states and 38691 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 00:58:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:00,517 INFO L93 Difference]: Finished difference Result 54639 states and 75854 transitions. [2021-12-07 00:58:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:58:00,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 186 [2021-12-07 00:58:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:00,601 INFO L225 Difference]: With dead ends: 54639 [2021-12-07 00:58:00,601 INFO L226 Difference]: Without dead ends: 26814 [2021-12-07 00:58:00,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:58:00,656 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 1483 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:00,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 1552 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:58:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26814 states. [2021-12-07 00:58:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26814 to 26814. [2021-12-07 00:58:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26814 states, 19548 states have (on average 1.2996726007775732) internal successors, (25406), 20012 states have internal predecessors, (25406), 5711 states have call successors, (5711), 1555 states have call predecessors, (5711), 1554 states have return successors, (5710), 5450 states have call predecessors, (5710), 5710 states have call successors, (5710) [2021-12-07 00:58:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26814 states to 26814 states and 36827 transitions. [2021-12-07 00:58:01,543 INFO L78 Accepts]: Start accepts. Automaton has 26814 states and 36827 transitions. Word has length 186 [2021-12-07 00:58:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:01,543 INFO L470 AbstractCegarLoop]: Abstraction has 26814 states and 36827 transitions. [2021-12-07 00:58:01,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 00:58:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 26814 states and 36827 transitions. [2021-12-07 00:58:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-07 00:58:01,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:01,547 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 00:58:01,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:58:01,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:58:01,748 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:01,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1535091734, now seen corresponding path program 1 times [2021-12-07 00:58:01,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:01,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410041705] [2021-12-07 00:58:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:01,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:01,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:58:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:01,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:01,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:01,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:58:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:01,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:01,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:01,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:58:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:58:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:58:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:58:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:58:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:58:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:58:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:58:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-07 00:58:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-07 00:58:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-07 00:58:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-12-07 00:58:02,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:02,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410041705] [2021-12-07 00:58:02,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410041705] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:58:02,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139401808] [2021-12-07 00:58:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:02,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:58:02,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:02,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:58:02,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:58:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:02,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:58:02,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:58:02,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:58:02,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139401808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:02,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:58:02,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-07 00:58:02,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237944451] [2021-12-07 00:58:02,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:02,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:58:02,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:02,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:58:02,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:58:02,845 INFO L87 Difference]: Start difference. First operand 26814 states and 36827 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 00:58:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:03,830 INFO L93 Difference]: Finished difference Result 67106 states and 92145 transitions. [2021-12-07 00:58:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:58:03,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 186 [2021-12-07 00:58:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:03,934 INFO L225 Difference]: With dead ends: 67106 [2021-12-07 00:58:03,934 INFO L226 Difference]: Without dead ends: 40320 [2021-12-07 00:58:03,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:58:03,992 INFO L933 BasicCegarLoop]: 2150 mSDtfsCounter, 1583 mSDsluCounter, 10129 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 12279 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:03,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 12279 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:58:04,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40320 states. [2021-12-07 00:58:05,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40320 to 40025. [2021-12-07 00:58:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40025 states, 29194 states have (on average 1.300575460711105) internal successors, (37969), 29906 states have internal predecessors, (37969), 8500 states have call successors, (8500), 2315 states have call predecessors, (8500), 2330 states have return successors, (8539), 8107 states have call predecessors, (8539), 8499 states have call successors, (8539) [2021-12-07 00:58:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40025 states to 40025 states and 55008 transitions. [2021-12-07 00:58:05,366 INFO L78 Accepts]: Start accepts. Automaton has 40025 states and 55008 transitions. Word has length 186 [2021-12-07 00:58:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:05,367 INFO L470 AbstractCegarLoop]: Abstraction has 40025 states and 55008 transitions. [2021-12-07 00:58:05,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 00:58:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 40025 states and 55008 transitions. [2021-12-07 00:58:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-07 00:58:05,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:05,371 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 00:58:05,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:58:05,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-07 00:58:05,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:05,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash 556154526, now seen corresponding path program 1 times [2021-12-07 00:58:05,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:05,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401630641] [2021-12-07 00:58:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:05,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:58:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:58:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:58:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:58:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:58:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:58:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:58:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:58:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-07 00:58:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-07 00:58:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-07 00:58:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-07 00:58:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-07 00:58:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:58:05,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:05,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401630641] [2021-12-07 00:58:05,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401630641] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:58:05,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507431773] [2021-12-07 00:58:05,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:05,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:58:05,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:05,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:58:05,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:58:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:06,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:58:06,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:58:06,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:58:06,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507431773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:06,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:58:06,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-12-07 00:58:06,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375087030] [2021-12-07 00:58:06,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:06,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:58:06,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:58:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:58:06,498 INFO L87 Difference]: Start difference. First operand 40025 states and 55008 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 00:58:07,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:07,852 INFO L93 Difference]: Finished difference Result 93634 states and 128599 transitions. [2021-12-07 00:58:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:58:07,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 187 [2021-12-07 00:58:07,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:08,009 INFO L225 Difference]: With dead ends: 93634 [2021-12-07 00:58:08,009 INFO L226 Difference]: Without dead ends: 53637 [2021-12-07 00:58:08,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-12-07 00:58:08,096 INFO L933 BasicCegarLoop]: 2257 mSDtfsCounter, 1583 mSDsluCounter, 10545 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 12802 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:08,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 12802 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:58:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53637 states. [2021-12-07 00:58:09,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53637 to 53300. [2021-12-07 00:58:09,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53300 states, 38880 states have (on average 1.3007201646090536) internal successors, (50572), 39872 states have internal predecessors, (50572), 11289 states have call successors, (11289), 3075 states have call predecessors, (11289), 3130 states have return successors, (11392), 10756 states have call predecessors, (11392), 11288 states have call successors, (11392) [2021-12-07 00:58:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53300 states to 53300 states and 73253 transitions. [2021-12-07 00:58:09,702 INFO L78 Accepts]: Start accepts. Automaton has 53300 states and 73253 transitions. Word has length 187 [2021-12-07 00:58:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:09,702 INFO L470 AbstractCegarLoop]: Abstraction has 53300 states and 73253 transitions. [2021-12-07 00:58:09,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 00:58:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 53300 states and 73253 transitions. [2021-12-07 00:58:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-07 00:58:09,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:09,707 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 00:58:09,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-07 00:58:09,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-07 00:58:09,908 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1463434845, now seen corresponding path program 1 times [2021-12-07 00:58:09,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:09,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655432264] [2021-12-07 00:58:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:09,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:58:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:58:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:58:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:58:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:58:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:58:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:58:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:58:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-07 00:58:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-07 00:58:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:58:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-07 00:58:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-07 00:58:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:58:10,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:10,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655432264] [2021-12-07 00:58:10,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655432264] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:58:10,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906422476] [2021-12-07 00:58:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:10,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:58:10,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:10,232 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:58:10,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:58:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:10,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:58:10,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:58:10,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:58:10,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906422476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:10,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:58:10,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-12-07 00:58:10,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124638787] [2021-12-07 00:58:10,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:10,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:58:10,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:10,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:58:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:58:10,844 INFO L87 Difference]: Start difference. First operand 53300 states and 73253 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 00:58:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:12,786 INFO L93 Difference]: Finished difference Result 120162 states and 165053 transitions. [2021-12-07 00:58:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:58:12,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 188 [2021-12-07 00:58:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:12,997 INFO L225 Difference]: With dead ends: 120162 [2021-12-07 00:58:12,997 INFO L226 Difference]: Without dead ends: 66890 [2021-12-07 00:58:13,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-12-07 00:58:13,139 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 1583 mSDsluCounter, 10593 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 12862 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:13,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 12862 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:58:13,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66890 states. [2021-12-07 00:58:14,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66890 to 53344. [2021-12-07 00:58:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53344 states, 38912 states have (on average 1.3004728618421053) internal successors, (50604), 39908 states have internal predecessors, (50604), 11289 states have call successors, (11289), 3075 states have call predecessors, (11289), 3142 states have return successors, (11410), 10764 states have call predecessors, (11410), 11288 states have call successors, (11410) [2021-12-07 00:58:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53344 states to 53344 states and 73303 transitions. [2021-12-07 00:58:14,993 INFO L78 Accepts]: Start accepts. Automaton has 53344 states and 73303 transitions. Word has length 188 [2021-12-07 00:58:14,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:14,994 INFO L470 AbstractCegarLoop]: Abstraction has 53344 states and 73303 transitions. [2021-12-07 00:58:14,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 00:58:14,994 INFO L276 IsEmpty]: Start isEmpty. Operand 53344 states and 73303 transitions. [2021-12-07 00:58:14,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-07 00:58:14,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:14,998 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-07 00:58:15,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:58:15,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 00:58:15,200 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:15,201 INFO L85 PathProgramCache]: Analyzing trace with hash 713916357, now seen corresponding path program 1 times [2021-12-07 00:58:15,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:15,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692883893] [2021-12-07 00:58:15,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:15,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:58:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:58:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:58:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:58:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:58:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:58:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:58:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:58:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-07 00:58:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-07 00:58:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:58:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-07 00:58:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-07 00:58:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:58:15,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:15,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692883893] [2021-12-07 00:58:15,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692883893] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:58:15,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565485428] [2021-12-07 00:58:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:15,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:58:15,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:15,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:58:15,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:58:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:15,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:58:15,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:58:16,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:58:16,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565485428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:16,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:58:16,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-12-07 00:58:16,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211929206] [2021-12-07 00:58:16,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:16,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:58:16,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:16,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:58:16,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:58:16,049 INFO L87 Difference]: Start difference. First operand 53344 states and 73303 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 00:58:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:17,736 INFO L93 Difference]: Finished difference Result 120222 states and 165119 transitions. [2021-12-07 00:58:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:58:17,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 189 [2021-12-07 00:58:17,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:58:17,918 INFO L225 Difference]: With dead ends: 120222 [2021-12-07 00:58:17,918 INFO L226 Difference]: Without dead ends: 66906 [2021-12-07 00:58:18,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-12-07 00:58:18,039 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 1583 mSDsluCounter, 10593 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 12862 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:58:18,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 12862 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:58:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66906 states. [2021-12-07 00:58:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66906 to 53370. [2021-12-07 00:58:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53370 states, 38932 states have (on average 1.3003185040583582) internal successors, (50624), 39926 states have internal predecessors, (50624), 11289 states have call successors, (11289), 3075 states have call predecessors, (11289), 3148 states have return successors, (11416), 10772 states have call predecessors, (11416), 11288 states have call successors, (11416) [2021-12-07 00:58:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53370 states to 53370 states and 73329 transitions. [2021-12-07 00:58:19,764 INFO L78 Accepts]: Start accepts. Automaton has 53370 states and 73329 transitions. Word has length 189 [2021-12-07 00:58:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:58:19,764 INFO L470 AbstractCegarLoop]: Abstraction has 53370 states and 73329 transitions. [2021-12-07 00:58:19,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 00:58:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 53370 states and 73329 transitions. [2021-12-07 00:58:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-07 00:58:19,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:58:19,768 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:58:19,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:58:19,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-07 00:58:19,970 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:58:19,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:19,971 INFO L85 PathProgramCache]: Analyzing trace with hash -413484773, now seen corresponding path program 1 times [2021-12-07 00:58:19,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:19,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554848677] [2021-12-07 00:58:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:19,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:58:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:58:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:58:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:58:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:58:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:58:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:58:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:58:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:58:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:58:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-07 00:58:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:58:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:58:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-07 00:58:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-07 00:58:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-07 00:58:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-07 00:58:20,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:20,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554848677] [2021-12-07 00:58:20,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554848677] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:58:20,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607976387] [2021-12-07 00:58:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:20,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:58:20,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:20,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:58:20,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:58:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:20,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:58:20,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-07 00:58:20,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:58:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-07 00:58:21,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607976387] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:58:21,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:58:21,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-12-07 00:58:21,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104053602] [2021-12-07 00:58:21,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:58:21,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-07 00:58:21,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:21,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-07 00:58:21,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:58:21,248 INFO L87 Difference]: Start difference. First operand 53370 states and 73329 transitions. Second operand has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 15 states have internal predecessors, (148), 5 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (32), 6 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-07 00:59:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:59:08,193 INFO L93 Difference]: Finished difference Result 174816 states and 245510 transitions. [2021-12-07 00:59:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-12-07 00:59:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 15 states have internal predecessors, (148), 5 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (32), 6 states have call predecessors, (32), 5 states have call successors, (32) Word has length 203 [2021-12-07 00:59:08,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:59:08,592 INFO L225 Difference]: With dead ends: 174816 [2021-12-07 00:59:08,592 INFO L226 Difference]: Without dead ends: 121082 [2021-12-07 00:59:08,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 472 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7783 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3039, Invalid=17841, Unknown=0, NotChecked=0, Total=20880 [2021-12-07 00:59:08,750 INFO L933 BasicCegarLoop]: 4393 mSDtfsCounter, 14436 mSDsluCounter, 41791 mSDsCounter, 0 mSdLazyCounter, 33594 mSolverCounterSat, 9079 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14971 SdHoareTripleChecker+Valid, 46184 SdHoareTripleChecker+Invalid, 42673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 9079 IncrementalHoareTripleChecker+Valid, 33594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:59:08,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14971 Valid, 46184 Invalid, 42673 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [9079 Valid, 33594 Invalid, 0 Unknown, 0 Unchecked, 39.3s Time] [2021-12-07 00:59:08,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121082 states. [2021-12-07 00:59:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121082 to 85532. [2021-12-07 00:59:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85532 states, 62364 states have (on average 1.3003014559681867) internal successors, (81092), 63948 states have internal predecessors, (81092), 18121 states have call successors, (18121), 4959 states have call predecessors, (18121), 5046 states have return successors, (18304), 17272 states have call predecessors, (18304), 18120 states have call successors, (18304) [2021-12-07 00:59:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85532 states to 85532 states and 117517 transitions. [2021-12-07 00:59:12,200 INFO L78 Accepts]: Start accepts. Automaton has 85532 states and 117517 transitions. Word has length 203 [2021-12-07 00:59:12,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:59:12,200 INFO L470 AbstractCegarLoop]: Abstraction has 85532 states and 117517 transitions. [2021-12-07 00:59:12,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 15 states have internal predecessors, (148), 5 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (32), 6 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-07 00:59:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand 85532 states and 117517 transitions. [2021-12-07 00:59:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-07 00:59:12,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:59:12,206 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:59:12,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:59:12,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-07 00:59:12,407 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:59:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:59:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash -95593766, now seen corresponding path program 1 times [2021-12-07 00:59:12,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:59:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956753932] [2021-12-07 00:59:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:12,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:59:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:59:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:59:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:59:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:59:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:59:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:59:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:59:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:59:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-07 00:59:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-07 00:59:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-07 00:59:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-07 00:59:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-07 00:59:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-07 00:59:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-07 00:59:12,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:59:12,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956753932] [2021-12-07 00:59:12,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956753932] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:59:12,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690217371] [2021-12-07 00:59:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:12,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:59:12,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:59:12,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:59:12,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:59:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:13,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:59:13,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:59:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-07 00:59:13,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:59:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-07 00:59:13,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690217371] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:59:13,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:59:13,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-12-07 00:59:13,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317408276] [2021-12-07 00:59:13,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:59:13,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-07 00:59:13,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:59:13,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-07 00:59:13,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:59:13,593 INFO L87 Difference]: Start difference. First operand 85532 states and 117517 transitions. Second operand has 24 states, 24 states have (on average 6.25) internal successors, (150), 15 states have internal predecessors, (150), 5 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (32), 6 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-07 00:59:47,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:59:47,994 INFO L93 Difference]: Finished difference Result 285150 states and 399840 transitions. [2021-12-07 00:59:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-12-07 00:59:47,995 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.25) internal successors, (150), 15 states have internal predecessors, (150), 5 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (32), 6 states have call predecessors, (32), 5 states have call successors, (32) Word has length 204 [2021-12-07 00:59:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:59:48,628 INFO L225 Difference]: With dead ends: 285150 [2021-12-07 00:59:48,629 INFO L226 Difference]: Without dead ends: 199002 [2021-12-07 00:59:48,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 474 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7897 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3039, Invalid=17841, Unknown=0, NotChecked=0, Total=20880 [2021-12-07 00:59:48,829 INFO L933 BasicCegarLoop]: 4382 mSDtfsCounter, 14554 mSDsluCounter, 49777 mSDsCounter, 0 mSdLazyCounter, 36205 mSolverCounterSat, 9401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15088 SdHoareTripleChecker+Valid, 54159 SdHoareTripleChecker+Invalid, 45606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9401 IncrementalHoareTripleChecker+Valid, 36205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:59:48,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15088 Valid, 54159 Invalid, 45606 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9401 Valid, 36205 Invalid, 0 Unknown, 0 Unchecked, 24.8s Time] [2021-12-07 00:59:48,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199002 states. [2021-12-07 00:59:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199002 to 127024. [2021-12-07 00:59:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127024 states, 92584 states have (on average 1.300278665860192) internal successors, (120385), 94940 states have internal predecessors, (120385), 26939 states have call successors, (26939), 7397 states have call predecessors, (26939), 7500 states have return successors, (27192), 25648 states have call predecessors, (27192), 26938 states have call successors, (27192) [2021-12-07 00:59:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127024 states to 127024 states and 174516 transitions. [2021-12-07 00:59:54,400 INFO L78 Accepts]: Start accepts. Automaton has 127024 states and 174516 transitions. Word has length 204 [2021-12-07 00:59:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:59:54,400 INFO L470 AbstractCegarLoop]: Abstraction has 127024 states and 174516 transitions. [2021-12-07 00:59:54,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.25) internal successors, (150), 15 states have internal predecessors, (150), 5 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (32), 6 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-07 00:59:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 127024 states and 174516 transitions. [2021-12-07 00:59:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-07 00:59:54,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:59:54,405 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:59:54,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:59:54,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:59:54,607 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:59:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:59:54,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1375679422, now seen corresponding path program 1 times [2021-12-07 00:59:54,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:59:54,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282764624] [2021-12-07 00:59:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:54,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:59:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:59:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:59:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:59:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:59:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:59:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:59:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:59:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:59:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:59:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:59:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-07 00:59:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:54,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-07 00:59:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:55,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-07 00:59:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-07 00:59:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-07 00:59:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-07 00:59:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-07 00:59:55,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:59:55,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282764624] [2021-12-07 00:59:55,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282764624] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:59:55,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923486885] [2021-12-07 00:59:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:59:55,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:59:55,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:59:55,029 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:59:55,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:59:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:59:55,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:59:55,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:59:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-07 00:59:55,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:59:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-07 00:59:55,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923486885] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:59:55,944 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:59:55,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-12-07 00:59:55,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076081738] [2021-12-07 00:59:55,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:59:55,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-07 00:59:55,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:59:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-07 00:59:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:59:55,946 INFO L87 Difference]: Start difference. First operand 127024 states and 174516 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 15 states have internal predecessors, (152), 5 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (32), 6 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-07 01:00:32,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:00:32,975 INFO L93 Difference]: Finished difference Result 383855 states and 538613 transitions. [2021-12-07 01:00:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-12-07 01:00:32,977 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 15 states have internal predecessors, (152), 5 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (32), 6 states have call predecessors, (32), 5 states have call successors, (32) Word has length 205 [2021-12-07 01:00:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:00:33,817 INFO L225 Difference]: With dead ends: 383855 [2021-12-07 01:00:33,817 INFO L226 Difference]: Without dead ends: 255991 [2021-12-07 01:00:34,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 476 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7872 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3039, Invalid=17841, Unknown=0, NotChecked=0, Total=20880 [2021-12-07 01:00:34,113 INFO L933 BasicCegarLoop]: 4259 mSDtfsCounter, 15916 mSDsluCounter, 51055 mSDsCounter, 0 mSdLazyCounter, 36168 mSolverCounterSat, 10888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16450 SdHoareTripleChecker+Valid, 55314 SdHoareTripleChecker+Invalid, 47056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10888 IncrementalHoareTripleChecker+Valid, 36168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:00:34,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16450 Valid, 55314 Invalid, 47056 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10888 Valid, 36168 Invalid, 0 Unknown, 0 Unchecked, 24.9s Time] [2021-12-07 01:00:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255991 states. [2021-12-07 01:00:40,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255991 to 141987. [2021-12-07 01:00:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141987 states, 103437 states have (on average 1.2999216914643696) internal successors, (134460), 105997 states have internal predecessors, (134460), 30189 states have call successors, (30189), 8305 states have call predecessors, (30189), 8360 states have return successors, (30422), 28760 states have call predecessors, (30422), 30188 states have call successors, (30422) [2021-12-07 01:00:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141987 states to 141987 states and 195071 transitions. [2021-12-07 01:00:41,264 INFO L78 Accepts]: Start accepts. Automaton has 141987 states and 195071 transitions. Word has length 205 [2021-12-07 01:00:41,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:00:41,264 INFO L470 AbstractCegarLoop]: Abstraction has 141987 states and 195071 transitions. [2021-12-07 01:00:41,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 15 states have internal predecessors, (152), 5 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (32), 6 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-07 01:00:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 141987 states and 195071 transitions. [2021-12-07 01:00:41,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-07 01:00:41,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:00:41,273 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:00:41,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:00:41,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 01:00:41,475 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:00:41,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:00:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash -669958548, now seen corresponding path program 1 times [2021-12-07 01:00:41,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:00:41,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289467663] [2021-12-07 01:00:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:00:41,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:00:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 01:00:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:00:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:00:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:00:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:00:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:00:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 01:00:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:00:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:00:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 01:00:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:00:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:00:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 01:00:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:00:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:00:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 01:00:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:00:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:00:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 01:00:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:00:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 01:00:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:00:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-07 01:00:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-07 01:00:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 01:00:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-07 01:00:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 01:00:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-07 01:00:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 01:00:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-07 01:00:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-07 01:00:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-07 01:00:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-07 01:00:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:00:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:00:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-07 01:00:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-07 01:00:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-07 01:00:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-07 01:00:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-07 01:00:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-07 01:00:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-07 01:00:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-07 01:00:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-07 01:00:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-07 01:00:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:00:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-12-07 01:00:41,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:00:41,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289467663] [2021-12-07 01:00:41,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289467663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:00:41,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:00:41,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:00:41,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248886479] [2021-12-07 01:00:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:00:41,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:00:41,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:00:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:00:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:00:41,807 INFO L87 Difference]: Start difference. First operand 141987 states and 195071 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-07 01:00:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:00:57,505 INFO L93 Difference]: Finished difference Result 471699 states and 659927 transitions. [2021-12-07 01:00:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:00:57,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 336 [2021-12-07 01:00:57,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:00:58,656 INFO L225 Difference]: With dead ends: 471699 [2021-12-07 01:00:58,656 INFO L226 Difference]: Without dead ends: 329740 [2021-12-07 01:00:58,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:00:58,986 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 2766 mSDsluCounter, 4407 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 1930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2961 SdHoareTripleChecker+Valid, 6684 SdHoareTripleChecker+Invalid, 4792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1930 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:00:58,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2961 Valid, 6684 Invalid, 4792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1930 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-07 01:00:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329740 states. [2021-12-07 01:01:09,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329740 to 230785. [2021-12-07 01:01:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230785 states, 168096 states have (on average 1.2994003426613363) internal successors, (218424), 172065 states have internal predecessors, (218424), 48890 states have call successors, (48890), 13711 states have call predecessors, (48890), 13798 states have return successors, (49321), 46419 states have call predecessors, (49321), 48889 states have call successors, (49321) [2021-12-07 01:01:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230785 states to 230785 states and 316635 transitions. [2021-12-07 01:01:10,567 INFO L78 Accepts]: Start accepts. Automaton has 230785 states and 316635 transitions. Word has length 336 [2021-12-07 01:01:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:10,568 INFO L470 AbstractCegarLoop]: Abstraction has 230785 states and 316635 transitions. [2021-12-07 01:01:10,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-07 01:01:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 230785 states and 316635 transitions. [2021-12-07 01:01:10,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-12-07 01:01:10,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:10,577 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:10,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 01:01:10,577 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:10,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1578517355, now seen corresponding path program 1 times [2021-12-07 01:01:10,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:10,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091239534] [2021-12-07 01:01:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:10,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 01:01:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:01:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:01:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:01:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 01:01:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:01:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 01:01:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:01:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 01:01:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:01:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 01:01:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:01:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 01:01:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 01:01:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 01:01:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:01:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-07 01:01:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-07 01:01:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-07 01:01:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-07 01:01:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 01:01:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-07 01:01:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 01:01:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-07 01:01:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-07 01:01:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-07 01:01:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-07 01:01:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 01:01:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:01:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-07 01:01:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-07 01:01:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-07 01:01:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-07 01:01:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-07 01:01:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-12-07 01:01:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-07 01:01:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-07 01:01:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-07 01:01:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-12-07 01:01:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-12-07 01:01:10,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:10,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091239534] [2021-12-07 01:01:10,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091239534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:10,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:10,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:10,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387007462] [2021-12-07 01:01:10,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:10,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:10,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:10,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:10,894 INFO L87 Difference]: Start difference. First operand 230785 states and 316635 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-07 01:01:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:25,936 INFO L93 Difference]: Finished difference Result 533685 states and 743513 transitions. [2021-12-07 01:01:25,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:01:25,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 367 [2021-12-07 01:01:25,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:27,025 INFO L225 Difference]: With dead ends: 533685 [2021-12-07 01:01:27,026 INFO L226 Difference]: Without dead ends: 302942 [2021-12-07 01:01:27,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:01:27,488 INFO L933 BasicCegarLoop]: 1475 mSDtfsCounter, 2422 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 1121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2610 SdHoareTripleChecker+Valid, 4151 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1121 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:27,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2610 Valid, 4151 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1121 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-07 01:01:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302942 states. [2021-12-07 01:01:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302942 to 230785. [2021-12-07 01:01:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230785 states, 168096 states have (on average 1.2984366076527698) internal successors, (218262), 172065 states have internal predecessors, (218262), 48890 states have call successors, (48890), 13711 states have call predecessors, (48890), 13798 states have return successors, (49321), 46419 states have call predecessors, (49321), 48889 states have call successors, (49321) [2021-12-07 01:01:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230785 states to 230785 states and 316473 transitions. [2021-12-07 01:01:38,847 INFO L78 Accepts]: Start accepts. Automaton has 230785 states and 316473 transitions. Word has length 367 [2021-12-07 01:01:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:38,848 INFO L470 AbstractCegarLoop]: Abstraction has 230785 states and 316473 transitions. [2021-12-07 01:01:38,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-07 01:01:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 230785 states and 316473 transitions. [2021-12-07 01:01:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-12-07 01:01:38,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:38,858 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:01:38,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 01:01:38,858 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:38,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1125501842, now seen corresponding path program 1 times [2021-12-07 01:01:38,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:38,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914776069] [2021-12-07 01:01:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:38,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:38,936 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:01:38,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828056968] [2021-12-07 01:01:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:38,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:38,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:38,937 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:38,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 01:01:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:39,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:01:39,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:01:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2021-12-07 01:01:39,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:01:39,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:39,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914776069] [2021-12-07 01:01:39,830 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:01:39,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828056968] [2021-12-07 01:01:39,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828056968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:39,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:39,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:01:39,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812284929] [2021-12-07 01:01:39,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:39,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:39,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:39,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:39,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:39,831 INFO L87 Difference]: Start difference. First operand 230785 states and 316473 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-07 01:01:51,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:51,757 INFO L93 Difference]: Finished difference Result 544195 states and 762899 transitions. [2021-12-07 01:01:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:51,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 417 [2021-12-07 01:01:51,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:52,913 INFO L225 Difference]: With dead ends: 544195 [2021-12-07 01:01:52,914 INFO L226 Difference]: Without dead ends: 313452 [2021-12-07 01:01:53,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:53,365 INFO L933 BasicCegarLoop]: 2088 mSDtfsCounter, 454 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:53,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 3705 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:01:53,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313452 states. [2021-12-07 01:02:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313452 to 230947. [2021-12-07 01:02:04,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230947 states, 168258 states have (on average 1.298149270762757) internal successors, (218424), 172227 states have internal predecessors, (218424), 48890 states have call successors, (48890), 13711 states have call predecessors, (48890), 13798 states have return successors, (49321), 46419 states have call predecessors, (49321), 48889 states have call successors, (49321) [2021-12-07 01:02:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230947 states to 230947 states and 316635 transitions. [2021-12-07 01:02:05,506 INFO L78 Accepts]: Start accepts. Automaton has 230947 states and 316635 transitions. Word has length 417 [2021-12-07 01:02:05,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:05,507 INFO L470 AbstractCegarLoop]: Abstraction has 230947 states and 316635 transitions. [2021-12-07 01:02:05,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-07 01:02:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 230947 states and 316635 transitions. [2021-12-07 01:02:05,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-12-07 01:02:05,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:05,517 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:05,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 01:02:05,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 01:02:05,720 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:05,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash 291647542, now seen corresponding path program 1 times [2021-12-07 01:02:05,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:05,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526320780] [2021-12-07 01:02:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:05,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:05,972 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:05,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885485258] [2021-12-07 01:02:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:05,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:05,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:05,973 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:05,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 01:02:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:06,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 4385 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:02:06,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2021-12-07 01:02:06,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:06,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:06,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526320780] [2021-12-07 01:02:06,814 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:06,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885485258] [2021-12-07 01:02:06,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885485258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:06,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:06,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:02:06,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803595893] [2021-12-07 01:02:06,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:06,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:02:06,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:02:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:02:06,815 INFO L87 Difference]: Start difference. First operand 230947 states and 316635 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-07 01:02:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:19,312 INFO L93 Difference]: Finished difference Result 571303 states and 782816 transitions. [2021-12-07 01:02:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:02:19,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 447 [2021-12-07 01:02:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:20,565 INFO L225 Difference]: With dead ends: 571303 [2021-12-07 01:02:20,566 INFO L226 Difference]: Without dead ends: 340398 [2021-12-07 01:02:21,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:02:21,078 INFO L933 BasicCegarLoop]: 1738 mSDtfsCounter, 1147 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:21,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 3079 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:02:21,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340398 states. [2021-12-07 01:02:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340398 to 337560. [2021-12-07 01:02:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337560 states, 247559 states have (on average 1.2964788191905767) internal successors, (320955), 253391 states have internal predecessors, (320955), 68911 states have call successors, (68911), 20958 states have call predecessors, (68911), 21089 states have return successors, (69558), 65286 states have call predecessors, (69558), 68910 states have call successors, (69558) [2021-12-07 01:02:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337560 states to 337560 states and 459424 transitions. [2021-12-07 01:02:36,848 INFO L78 Accepts]: Start accepts. Automaton has 337560 states and 459424 transitions. Word has length 447 [2021-12-07 01:02:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:36,848 INFO L470 AbstractCegarLoop]: Abstraction has 337560 states and 459424 transitions. [2021-12-07 01:02:36,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-07 01:02:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 337560 states and 459424 transitions. [2021-12-07 01:02:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-12-07 01:02:36,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:36,870 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:36,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-07 01:02:37,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 01:02:37,072 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:37,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:37,074 INFO L85 PathProgramCache]: Analyzing trace with hash -421737886, now seen corresponding path program 1 times [2021-12-07 01:02:37,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:37,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285421503] [2021-12-07 01:02:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:37,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:37,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:37,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98324591] [2021-12-07 01:02:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:37,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:37,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:37,207 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:37,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 01:02:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:37,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 4293 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:02:37,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2021-12-07 01:02:38,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:38,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:38,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285421503] [2021-12-07 01:02:38,099 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:38,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98324591] [2021-12-07 01:02:38,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98324591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:38,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:38,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:02:38,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166048049] [2021-12-07 01:02:38,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:38,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:02:38,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:38,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:02:38,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:02:38,101 INFO L87 Difference]: Start difference. First operand 337560 states and 459424 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-12-07 01:02:52,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:52,228 INFO L93 Difference]: Finished difference Result 688362 states and 939535 transitions. [2021-12-07 01:02:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:02:52,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 457 [2021-12-07 01:02:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:53,448 INFO L225 Difference]: With dead ends: 688362 [2021-12-07 01:02:53,448 INFO L226 Difference]: Without dead ends: 350844 [2021-12-07 01:02:54,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:02:54,279 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 26 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:54,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 3093 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:02:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350844 states. [2021-12-07 01:03:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350844 to 339828. [2021-12-07 01:03:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339828 states, 249827 states have (on average 1.293787300812162) internal successors, (323223), 255659 states have internal predecessors, (323223), 68911 states have call successors, (68911), 20958 states have call predecessors, (68911), 21089 states have return successors, (69558), 65286 states have call predecessors, (69558), 68910 states have call successors, (69558) [2021-12-07 01:03:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339828 states to 339828 states and 461692 transitions. [2021-12-07 01:03:10,429 INFO L78 Accepts]: Start accepts. Automaton has 339828 states and 461692 transitions. Word has length 457 [2021-12-07 01:03:10,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:03:10,429 INFO L470 AbstractCegarLoop]: Abstraction has 339828 states and 461692 transitions. [2021-12-07 01:03:10,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-12-07 01:03:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 339828 states and 461692 transitions. [2021-12-07 01:03:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-12-07 01:03:10,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:03:10,443 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:03:10,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-07 01:03:10,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:03:10,645 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:03:10,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:03:10,646 INFO L85 PathProgramCache]: Analyzing trace with hash -200105298, now seen corresponding path program 1 times [2021-12-07 01:03:10,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:03:10,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483855997] [2021-12-07 01:03:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:10,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:03:10,754 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:03:10,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352978460] [2021-12-07 01:03:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:10,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:03:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:03:10,755 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:03:10,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 01:03:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:11,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 4432 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:03:11,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:03:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2021-12-07 01:03:11,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:03:11,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:11,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483855997] [2021-12-07 01:03:11,635 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:03:11,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352978460] [2021-12-07 01:03:11,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352978460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:03:11,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:03:11,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:03:11,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019549866] [2021-12-07 01:03:11,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:03:11,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:03:11,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:11,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:03:11,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:03:11,636 INFO L87 Difference]: Start difference. First operand 339828 states and 461692 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2021-12-07 01:03:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:03:25,364 INFO L93 Difference]: Finished difference Result 681882 states and 926737 transitions. [2021-12-07 01:03:25,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:03:25,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 464 [2021-12-07 01:03:25,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:03:26,412 INFO L225 Difference]: With dead ends: 681882 [2021-12-07 01:03:26,412 INFO L226 Difference]: Without dead ends: 342096 [2021-12-07 01:03:27,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:03:27,330 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 8 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:03:27,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3112 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:03:27,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342096 states. [2021-12-07 01:03:41,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342096 to 340314. [2021-12-07 01:03:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340314 states, 250313 states have (on average 1.2932168924506517) internal successors, (323709), 256145 states have internal predecessors, (323709), 68911 states have call successors, (68911), 20958 states have call predecessors, (68911), 21089 states have return successors, (69558), 65286 states have call predecessors, (69558), 68910 states have call successors, (69558) [2021-12-07 01:03:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340314 states to 340314 states and 462178 transitions. [2021-12-07 01:03:43,270 INFO L78 Accepts]: Start accepts. Automaton has 340314 states and 462178 transitions. Word has length 464 [2021-12-07 01:03:43,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:03:43,271 INFO L470 AbstractCegarLoop]: Abstraction has 340314 states and 462178 transitions. [2021-12-07 01:03:43,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2021-12-07 01:03:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 340314 states and 462178 transitions. [2021-12-07 01:03:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-12-07 01:03:43,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:03:43,285 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:03:43,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-07 01:03:43,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:03:43,487 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:03:43,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:03:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash -801495734, now seen corresponding path program 1 times [2021-12-07 01:03:43,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:03:43,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400363271] [2021-12-07 01:03:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:43,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:03:43,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:03:43,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534116702] [2021-12-07 01:03:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:43,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:03:43,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:03:43,613 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:03:43,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 01:03:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:44,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 4461 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:03:44,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:03:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2021-12-07 01:03:44,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:03:44,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:44,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400363271] [2021-12-07 01:03:44,569 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:03:44,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534116702] [2021-12-07 01:03:44,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534116702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:03:44,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:03:44,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:03:44,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356175782] [2021-12-07 01:03:44,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:03:44,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:03:44,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:44,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:03:44,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:03:44,570 INFO L87 Difference]: Start difference. First operand 340314 states and 462178 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-12-07 01:04:10,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:10,663 INFO L93 Difference]: Finished difference Result 1019886 states and 1384735 transitions. [2021-12-07 01:04:10,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:10,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 466 [2021-12-07 01:04:10,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:13,310 INFO L225 Difference]: With dead ends: 1019886 [2021-12-07 01:04:13,310 INFO L226 Difference]: Without dead ends: 679614 [2021-12-07 01:04:14,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:14,080 INFO L933 BasicCegarLoop]: 2721 mSDtfsCounter, 1405 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:14,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1405 Valid, 4246 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679614 states. [2021-12-07 01:04:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679614 to 679368. [2021-12-07 01:04:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679368 states, 499627 states have (on average 1.292342087197049) internal successors, (645689), 510805 states have internal predecessors, (645689), 137567 states have call successors, (137567), 41910 states have call predecessors, (137567), 42173 states have return successors, (138862), 130318 states have call predecessors, (138862), 137566 states have call successors, (138862) [2021-12-07 01:04:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679368 states to 679368 states and 922118 transitions. [2021-12-07 01:04:48,332 INFO L78 Accepts]: Start accepts. Automaton has 679368 states and 922118 transitions. Word has length 466 [2021-12-07 01:04:48,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:48,333 INFO L470 AbstractCegarLoop]: Abstraction has 679368 states and 922118 transitions. [2021-12-07 01:04:48,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-12-07 01:04:48,333 INFO L276 IsEmpty]: Start isEmpty. Operand 679368 states and 922118 transitions. [2021-12-07 01:04:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-12-07 01:04:48,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:48,358 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:48,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 01:04:48,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:48,559 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash -912679345, now seen corresponding path program 1 times [2021-12-07 01:04:48,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:48,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362080352] [2021-12-07 01:04:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:48,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:48,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:04:48,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691181030] [2021-12-07 01:04:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:48,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:04:48,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:04:48,664 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:04:48,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11532d90-460f-4a52-b35b-9920bee8d66f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 01:04:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:49,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 4465 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:04:49,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:04:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2021-12-07 01:04:49,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:04:49,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:49,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362080352] [2021-12-07 01:04:49,777 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:04:49,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691181030] [2021-12-07 01:04:49,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691181030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:49,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:49,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:04:49,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302067525] [2021-12-07 01:04:49,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:49,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:49,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:49,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:49,779 INFO L87 Difference]: Start difference. First operand 679368 states and 922118 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-12-07 01:05:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:20,346 INFO L93 Difference]: Finished difference Result 1358694 states and 1844187 transitions. [2021-12-07 01:05:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:05:20,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 468 [2021-12-07 01:05:20,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:22,945 INFO L225 Difference]: With dead ends: 1358694 [2021-12-07 01:05:22,945 INFO L226 Difference]: Without dead ends: 679368