./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/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_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/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 32bit --witnessprinter.graph.data.programhash 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:52:56,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:52:56,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:52:56,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:52:56,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:52:56,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:52:56,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:52:56,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:52:56,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:52:56,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:52:56,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:52:56,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:52:56,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:52:56,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:52:56,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:52:56,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:52:56,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:52:56,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:52:56,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:52:56,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:52:56,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:52:56,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:52:56,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:52:56,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:52:56,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:52:56,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:52:56,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:52:56,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:52:56,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:52:56,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:52:56,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:52:56,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:52:56,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:52:56,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:52:56,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:52:56,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:52:56,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:52:56,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:52:56,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:52:56,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:52:56,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:52:56,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:52:56,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:52:56,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:52:56,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:52:56,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:52:56,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:52:56,623 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:52:56,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:52:56,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:52:56,624 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:52:56,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:52:56,624 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:52:56,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:52:56,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:52:56,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:52:56,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:52:56,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:52:56,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:52:56,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:52:56,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:52:56,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:52:56,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:52:56,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:52:56,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:52:56,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:52:56,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:52:56,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:52:56,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:52:56,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:52:56,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:52:56,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:52:56,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:52:56,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:52:56,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:52:56,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:52:56,628 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_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2021-12-06 21:52:56,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:52:56,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:52:56,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:52:56,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:52:56,844 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:52:56,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-12-06 21:52:56,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/data/f4d16a1f4/1385f2290f8545c5a813cd46b3c11ca4/FLAGbf0ea402f [2021-12-06 21:52:57,361 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:52:57,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-12-06 21:52:57,375 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/data/f4d16a1f4/1385f2290f8545c5a813cd46b3c11ca4/FLAGbf0ea402f [2021-12-06 21:52:57,388 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/data/f4d16a1f4/1385f2290f8545c5a813cd46b3c11ca4 [2021-12-06 21:52:57,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:52:57,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:52:57,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:52:57,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:52:57,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:52:57,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:57,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4ba172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57, skipping insertion in model container [2021-12-06 21:52:57,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:57,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:52:57,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:52:57,685 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_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2021-12-06 21:52:57,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:52:57,787 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:52:57,829 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_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2021-12-06 21:52:57,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:52:57,916 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:52:57,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57 WrapperNode [2021-12-06 21:52:57,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:52:57,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:52:57,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:52:57,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:52:57,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:57,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:58,014 INFO L137 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1445 [2021-12-06 21:52:58,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:52:58,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:52:58,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:52:58,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:52:58,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:58,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:58,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:58,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:58,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:58,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:58,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:58,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:52:58,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:52:58,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:52:58,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:52:58,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (1/1) ... [2021-12-06 21:52:58,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:52:58,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:52:58,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:52:58,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:52:58,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 21:52:58,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 21:52:58,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 21:52:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 21:52:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 21:52:58,167 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 21:52:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 21:52:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:52:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:52:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 21:52:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 21:52:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:52:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:52:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:52:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:52:58,341 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:52:58,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:52:59,189 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:52:59,197 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:52:59,197 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-12-06 21:52:59,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:52:59 BoogieIcfgContainer [2021-12-06 21:52:59,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:52:59,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:52:59,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:52:59,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:52:59,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:52:57" (1/3) ... [2021-12-06 21:52:59,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb00d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:52:59, skipping insertion in model container [2021-12-06 21:52:59,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:57" (2/3) ... [2021-12-06 21:52:59,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb00d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:52:59, skipping insertion in model container [2021-12-06 21:52:59,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:52:59" (3/3) ... [2021-12-06 21:52:59,205 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-3.i [2021-12-06 21:52:59,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:52:59,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:52:59,247 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:52:59,252 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 [2021-12-06 21:52:59,252 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:52:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 261 states, 241 states have (on average 1.6887966804979253) internal successors, (407), 252 states have internal predecessors, (407), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 21:52:59,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 21:52:59,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:59,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:52:59,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:59,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:59,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1523630084, now seen corresponding path program 1 times [2021-12-06 21:52:59,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:59,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022751428] [2021-12-06 21:52:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:59,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:52:59,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:59,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022751428] [2021-12-06 21:52:59,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022751428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:52:59,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:52:59,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:52:59,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099821951] [2021-12-06 21:52:59,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:52:59,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:52:59,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:59,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:52:59,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:52:59,465 INFO L87 Difference]: Start difference. First operand has 261 states, 241 states have (on average 1.6887966804979253) internal successors, (407), 252 states have internal predecessors, (407), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:52:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:52:59,573 INFO L93 Difference]: Finished difference Result 690 states and 1177 transitions. [2021-12-06 21:52:59,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:52:59,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 21:52:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:52:59,589 INFO L225 Difference]: With dead ends: 690 [2021-12-06 21:52:59,589 INFO L226 Difference]: Without dead ends: 377 [2021-12-06 21:52:59,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:52:59,598 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 211 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:52:59,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 739 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:52:59,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-06 21:52:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 208. [2021-12-06 21:52:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 189 states have (on average 1.3227513227513228) internal successors, (250), 199 states have internal predecessors, (250), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 21:52:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 282 transitions. [2021-12-06 21:52:59,659 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 282 transitions. Word has length 10 [2021-12-06 21:52:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:52:59,659 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 282 transitions. [2021-12-06 21:52:59,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:52:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 282 transitions. [2021-12-06 21:52:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 21:52:59,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:59,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:52:59,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:52:59,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1954115269, now seen corresponding path program 1 times [2021-12-06 21:52:59,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:59,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671351248] [2021-12-06 21:52:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:59,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:59,841 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:52:59,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905872046] [2021-12-06 21:52:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:59,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:52:59,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:52:59,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:52:59,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:53:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:00,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:53:00,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:53:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:53:00,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:53:00,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:00,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671351248] [2021-12-06 21:53:00,644 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:53:00,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905872046] [2021-12-06 21:53:00,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905872046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:00,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:00,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:53:00,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854969505] [2021-12-06 21:53:00,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:00,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:53:00,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:53:00,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:53:00,648 INFO L87 Difference]: Start difference. First operand 208 states and 282 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:00,716 INFO L93 Difference]: Finished difference Result 434 states and 592 transitions. [2021-12-06 21:53:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:53:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-06 21:53:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:00,720 INFO L225 Difference]: With dead ends: 434 [2021-12-06 21:53:00,720 INFO L226 Difference]: Without dead ends: 229 [2021-12-06 21:53:00,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:53:00,723 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 9 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:00,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 507 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:53:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-06 21:53:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-12-06 21:53:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 209 states have (on average 1.291866028708134) internal successors, (270), 219 states have internal predecessors, (270), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 21:53:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 302 transitions. [2021-12-06 21:53:00,745 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 302 transitions. Word has length 108 [2021-12-06 21:53:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:00,746 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 302 transitions. [2021-12-06 21:53:00,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 302 transitions. [2021-12-06 21:53:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 21:53:00,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:00,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:53:00,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:53:00,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:00,953 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:00,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash -721877113, now seen corresponding path program 1 times [2021-12-06 21:53:00,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:00,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109104944] [2021-12-06 21:53:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:00,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:01,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:53:01,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506099005] [2021-12-06 21:53:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:01,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:01,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:53:01,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:53:01,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:53:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:53:01,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:53:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:53:01,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:53:01,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:01,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109104944] [2021-12-06 21:53:01,908 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:53:01,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506099005] [2021-12-06 21:53:01,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506099005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:01,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:01,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:53:01,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767557299] [2021-12-06 21:53:01,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:01,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:53:01,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:01,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:53:01,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:53:01,911 INFO L87 Difference]: Start difference. First operand 228 states and 302 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:01,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:01,963 INFO L93 Difference]: Finished difference Result 474 states and 632 transitions. [2021-12-06 21:53:01,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:53:01,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-06 21:53:01,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:01,966 INFO L225 Difference]: With dead ends: 474 [2021-12-06 21:53:01,966 INFO L226 Difference]: Without dead ends: 249 [2021-12-06 21:53:01,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:53:01,968 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 8 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:01,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 509 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:53:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-06 21:53:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 248. [2021-12-06 21:53:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 229 states have (on average 1.2663755458515285) internal successors, (290), 239 states have internal predecessors, (290), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 21:53:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 322 transitions. [2021-12-06 21:53:01,982 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 322 transitions. Word has length 108 [2021-12-06 21:53:01,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:01,983 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 322 transitions. [2021-12-06 21:53:01,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 322 transitions. [2021-12-06 21:53:01,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 21:53:01,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:01,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:53:02,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 21:53:02,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 21:53:02,189 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:02,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:02,190 INFO L85 PathProgramCache]: Analyzing trace with hash -649490555, now seen corresponding path program 1 times [2021-12-06 21:53:02,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:02,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597042642] [2021-12-06 21:53:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:02,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:02,364 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:53:02,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067899561] [2021-12-06 21:53:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:02,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:02,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:53:02,365 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:53:02,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 21:53:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:03,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:53:03,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:53:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:53:03,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:53:03,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:03,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597042642] [2021-12-06 21:53:03,125 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:53:03,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067899561] [2021-12-06 21:53:03,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067899561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:03,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:03,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:53:03,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295537160] [2021-12-06 21:53:03,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:03,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:53:03,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:03,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:53:03,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:53:03,127 INFO L87 Difference]: Start difference. First operand 248 states and 322 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:03,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:03,172 INFO L93 Difference]: Finished difference Result 485 states and 633 transitions. [2021-12-06 21:53:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:53:03,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-06 21:53:03,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:03,174 INFO L225 Difference]: With dead ends: 485 [2021-12-06 21:53:03,174 INFO L226 Difference]: Without dead ends: 240 [2021-12-06 21:53:03,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:53:03,176 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 228 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:03,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 540 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:53:03,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-06 21:53:03,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2021-12-06 21:53:03,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 215 states have (on average 1.2511627906976743) internal successors, (269), 225 states have internal predecessors, (269), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 21:53:03,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 301 transitions. [2021-12-06 21:53:03,185 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 301 transitions. Word has length 108 [2021-12-06 21:53:03,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:03,185 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 301 transitions. [2021-12-06 21:53:03,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:03,186 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 301 transitions. [2021-12-06 21:53:03,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 21:53:03,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:03,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:53:03,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 21:53:03,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:03,389 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:03,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:03,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2041338185, now seen corresponding path program 1 times [2021-12-06 21:53:03,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:03,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929154351] [2021-12-06 21:53:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:03,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:03,521 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:53:03,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198800366] [2021-12-06 21:53:03,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:03,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:03,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:53:03,522 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:53:03,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 21:53:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 21:53:04,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:53:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:53:04,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:53:04,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:04,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929154351] [2021-12-06 21:53:04,327 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:53:04,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198800366] [2021-12-06 21:53:04,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198800366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:04,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:04,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:53:04,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323569003] [2021-12-06 21:53:04,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:04,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:53:04,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:53:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:53:04,329 INFO L87 Difference]: Start difference. First operand 234 states and 301 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:04,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:04,407 INFO L93 Difference]: Finished difference Result 546 states and 700 transitions. [2021-12-06 21:53:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:53:04,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-06 21:53:04,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:04,410 INFO L225 Difference]: With dead ends: 546 [2021-12-06 21:53:04,410 INFO L226 Difference]: Without dead ends: 315 [2021-12-06 21:53:04,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:53:04,411 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 210 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:04,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1075 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:53:04,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-06 21:53:04,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 220. [2021-12-06 21:53:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 201 states have (on average 1.2338308457711442) internal successors, (248), 211 states have internal predecessors, (248), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 21:53:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 280 transitions. [2021-12-06 21:53:04,423 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 280 transitions. Word has length 108 [2021-12-06 21:53:04,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:04,424 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 280 transitions. [2021-12-06 21:53:04,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:04,424 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 280 transitions. [2021-12-06 21:53:04,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 21:53:04,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:04,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:53:04,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 21:53:04,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:04,627 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash 459394627, now seen corresponding path program 1 times [2021-12-06 21:53:04,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:04,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560746793] [2021-12-06 21:53:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:04,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:04,744 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:53:04,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561061631] [2021-12-06 21:53:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:04,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:04,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:53:04,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:53:04,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 21:53:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:53:05,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:53:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:53:05,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:53:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:53:05,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:05,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560746793] [2021-12-06 21:53:05,789 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:53:05,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561061631] [2021-12-06 21:53:05,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561061631] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:53:05,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:53:05,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-06 21:53:05,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876023636] [2021-12-06 21:53:05,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:53:05,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:53:05,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:05,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:53:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:53:05,791 INFO L87 Difference]: Start difference. First operand 220 states and 280 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:05,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:05,864 INFO L93 Difference]: Finished difference Result 797 states and 999 transitions. [2021-12-06 21:53:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:53:05,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-06 21:53:05,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:05,868 INFO L225 Difference]: With dead ends: 797 [2021-12-06 21:53:05,869 INFO L226 Difference]: Without dead ends: 766 [2021-12-06 21:53:05,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:53:05,870 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 923 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:05,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [947 Valid, 1115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:53:05,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-12-06 21:53:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2021-12-06 21:53:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 729 states have (on average 1.2043895747599451) internal successors, (878), 739 states have internal predecessors, (878), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-06 21:53:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 946 transitions. [2021-12-06 21:53:05,891 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 946 transitions. Word has length 108 [2021-12-06 21:53:05,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:05,892 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 946 transitions. [2021-12-06 21:53:05,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 946 transitions. [2021-12-06 21:53:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-12-06 21:53:05,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:05,897 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:53:05,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 21:53:06,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 21:53:06,099 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2041905512, now seen corresponding path program 2 times [2021-12-06 21:53:06,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:06,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456036444] [2021-12-06 21:53:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:06,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:06,430 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:53:06,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197047657] [2021-12-06 21:53:06,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:53:06,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:06,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:53:06,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:53:06,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 21:53:07,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:53:07,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:53:07,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:53:07,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:53:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2021-12-06 21:53:08,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:53:08,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:08,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456036444] [2021-12-06 21:53:08,445 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:53:08,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197047657] [2021-12-06 21:53:08,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197047657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:08,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:08,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:53:08,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783261909] [2021-12-06 21:53:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:08,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:53:08,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:53:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:53:08,447 INFO L87 Difference]: Start difference. First operand 766 states and 946 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:08,738 INFO L93 Difference]: Finished difference Result 1385 states and 1717 transitions. [2021-12-06 21:53:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:53:08,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2021-12-06 21:53:08,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:08,742 INFO L225 Difference]: With dead ends: 1385 [2021-12-06 21:53:08,742 INFO L226 Difference]: Without dead ends: 764 [2021-12-06 21:53:08,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:53:08,744 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 65 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:08,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 731 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:53:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-12-06 21:53:08,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2021-12-06 21:53:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 727 states have (on average 1.203576341127923) internal successors, (875), 737 states have internal predecessors, (875), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-06 21:53:08,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 943 transitions. [2021-12-06 21:53:08,764 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 943 transitions. Word has length 402 [2021-12-06 21:53:08,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:08,764 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 943 transitions. [2021-12-06 21:53:08,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:53:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 943 transitions. [2021-12-06 21:53:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-12-06 21:53:08,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:08,770 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-12-06 21:53:08,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 21:53:08,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 21:53:08,971 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash -280738903, now seen corresponding path program 1 times [2021-12-06 21:53:08,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:08,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052109120] [2021-12-06 21:53:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:08,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:09,448 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:53:09,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584787629] [2021-12-06 21:53:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:09,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:09,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:53:09,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:53:09,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 21:53:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:11,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 10743 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:53:11,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:53:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 21:53:12,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:53:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 21:53:12,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052109120] [2021-12-06 21:53:12,659 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:53:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584787629] [2021-12-06 21:53:12,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584787629] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:53:12,659 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:53:12,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-06 21:53:12,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350836705] [2021-12-06 21:53:12,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:53:12,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:53:12,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:12,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:53:12,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:53:12,662 INFO L87 Difference]: Start difference. First operand 764 states and 943 transitions. Second operand has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 21:53:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:12,883 INFO L93 Difference]: Finished difference Result 1887 states and 2331 transitions. [2021-12-06 21:53:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:53:12,884 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 417 [2021-12-06 21:53:12,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:12,895 INFO L225 Difference]: With dead ends: 1887 [2021-12-06 21:53:12,895 INFO L226 Difference]: Without dead ends: 1856 [2021-12-06 21:53:12,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:53:12,897 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 2746 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2802 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:12,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2802 Valid, 2543 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:53:12,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-12-06 21:53:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1856. [2021-12-06 21:53:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1783 states have (on average 1.1974200785193494) internal successors, (2135), 1793 states have internal predecessors, (2135), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2021-12-06 21:53:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2275 transitions. [2021-12-06 21:53:12,945 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2275 transitions. Word has length 417 [2021-12-06 21:53:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:12,946 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 2275 transitions. [2021-12-06 21:53:12,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 21:53:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2275 transitions. [2021-12-06 21:53:12,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2021-12-06 21:53:12,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:12,958 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2021-12-06 21:53:13,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 21:53:13,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:13,160 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:13,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash 112034707, now seen corresponding path program 2 times [2021-12-06 21:53:13,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:13,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947266206] [2021-12-06 21:53:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:13,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:13,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:53:13,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265332855] [2021-12-06 21:53:13,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:53:13,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:13,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:53:13,923 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:53:13,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 21:53:19,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:53:19,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:53:19,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 28053 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 21:53:19,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:53:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4406 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4081 trivial. 0 not checked. [2021-12-06 21:53:20,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:53:20,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:20,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947266206] [2021-12-06 21:53:20,354 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:53:20,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265332855] [2021-12-06 21:53:20,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265332855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:20,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:20,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:53:20,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963444511] [2021-12-06 21:53:20,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:20,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:53:20,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:53:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:53:20,357 INFO L87 Difference]: Start difference. First operand 1856 states and 2275 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 21:53:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:20,402 INFO L93 Difference]: Finished difference Result 3654 states and 4484 transitions. [2021-12-06 21:53:20,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:53:20,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1005 [2021-12-06 21:53:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:20,411 INFO L225 Difference]: With dead ends: 3654 [2021-12-06 21:53:20,411 INFO L226 Difference]: Without dead ends: 1854 [2021-12-06 21:53:20,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 1003 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:53:20,414 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 15 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:20,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 518 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:53:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-12-06 21:53:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1854. [2021-12-06 21:53:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1781 states have (on average 1.197080291970803) internal successors, (2132), 1791 states have internal predecessors, (2132), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2021-12-06 21:53:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2272 transitions. [2021-12-06 21:53:20,457 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2272 transitions. Word has length 1005 [2021-12-06 21:53:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:20,457 INFO L470 AbstractCegarLoop]: Abstraction has 1854 states and 2272 transitions. [2021-12-06 21:53:20,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 21:53:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2272 transitions. [2021-12-06 21:53:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2021-12-06 21:53:20,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:20,469 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:53:20,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 21:53:20,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:20,670 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:20,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 582051154, now seen corresponding path program 1 times [2021-12-06 21:53:20,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:20,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695138905] [2021-12-06 21:53:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:20,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:21,393 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:53:21,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831954662] [2021-12-06 21:53:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:21,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:21,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:53:21,394 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:53:21,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a91a7ce-f84b-4d8b-b59d-40b7249d9c79/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process