./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX --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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:33:22,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:33:22,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:33:22,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:33:22,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:33:22,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:33:22,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:33:22,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:33:22,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:33:22,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:33:22,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:33:22,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:33:22,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:33:22,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:33:22,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:33:22,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:33:22,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:33:22,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:33:22,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:33:22,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:33:22,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:33:22,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:33:22,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:33:22,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:33:22,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:33:22,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:33:22,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:33:22,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:33:22,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:33:22,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:33:22,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:33:22,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:33:22,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:33:22,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:33:22,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:33:22,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:33:22,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:33:22,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:33:22,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:33:22,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:33:22,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:33:22,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:33:22,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:33:22,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:33:22,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:33:22,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:33:22,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:33:22,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:33:22,675 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:33:22,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:33:22,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:33:22,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:33:22,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:33:22,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:33:22,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:33:22,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:33:22,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:33:22,679 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:33:22,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:33:22,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:33:22,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:33:22,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:33:22,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:33:22,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:33:22,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:22,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:33:22,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:33:22,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:33:22,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:33:22,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:33:22,682 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:33:22,684 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:33:22,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:33:22,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:33:22,685 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_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2021-11-09 09:33:22,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:33:22,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:33:22,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:33:22,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:33:22,972 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:33:22,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-09 09:33:23,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/data/b3ebad8ff/9b4358891d1f4f72865831651633c262/FLAG24a551d1b [2021-11-09 09:33:23,807 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:33:23,807 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-09 09:33:23,836 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/data/b3ebad8ff/9b4358891d1f4f72865831651633c262/FLAG24a551d1b [2021-11-09 09:33:24,040 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/data/b3ebad8ff/9b4358891d1f4f72865831651633c262 [2021-11-09 09:33:24,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:33:24,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:33:24,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:24,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:33:24,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:33:24,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:24" (1/1) ... [2021-11-09 09:33:24,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2640b9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:24, skipping insertion in model container [2021-11-09 09:33:24,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:24" (1/1) ... [2021-11-09 09:33:24,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:33:24,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:33:24,855 WARN L228 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_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-09 09:33:25,055 WARN L228 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_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-09 09:33:25,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:25,112 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:33:25,181 WARN L228 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_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-09 09:33:25,279 WARN L228 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_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-09 09:33:25,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:25,358 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:33:25,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25 WrapperNode [2021-11-09 09:33:25,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:25,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:33:25,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:33:25,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:33:25,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (1/1) ... [2021-11-09 09:33:25,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (1/1) ... [2021-11-09 09:33:25,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:33:25,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:33:25,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:33:25,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:33:25,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (1/1) ... [2021-11-09 09:33:25,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (1/1) ... [2021-11-09 09:33:25,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (1/1) ... [2021-11-09 09:33:25,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (1/1) ... [2021-11-09 09:33:25,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (1/1) ... [2021-11-09 09:33:25,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (1/1) ... [2021-11-09 09:33:25,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (1/1) ... [2021-11-09 09:33:25,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:33:25,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:33:25,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:33:25,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:33:25,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (1/1) ... [2021-11-09 09:33:25,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:25,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:25,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:33:25,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:33:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:33:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 09:33:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:33:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:33:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:33:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:33:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:33:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:33:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:33:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:33:25,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:33:27,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:33:27,630 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-09 09:33:27,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:27 BoogieIcfgContainer [2021-11-09 09:33:27,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:33:27,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:33:27,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:33:27,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:33:27,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:33:24" (1/3) ... [2021-11-09 09:33:27,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e861d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:27, skipping insertion in model container [2021-11-09 09:33:27,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:25" (2/3) ... [2021-11-09 09:33:27,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e861d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:27, skipping insertion in model container [2021-11-09 09:33:27,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:27" (3/3) ... [2021-11-09 09:33:27,648 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2021-11-09 09:33:27,656 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:33:27,656 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 09:33:27,737 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:33:27,748 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 [2021-11-09 09:33:27,749 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 09:33:27,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:27,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 09:33:27,803 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:27,805 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:27,806 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:27,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:27,813 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-09 09:33:27,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:27,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847977857] [2021-11-09 09:33:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:27,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:28,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:28,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847977857] [2021-11-09 09:33:28,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847977857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:28,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:28,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:33:28,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493048430] [2021-11-09 09:33:28,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:33:28,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:28,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:33:28,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:33:28,089 INFO L87 Difference]: Start difference. First operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:28,159 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-09 09:33:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:33:28,161 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-09 09:33:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:28,180 INFO L225 Difference]: With dead ends: 410 [2021-11-09 09:33:28,180 INFO L226 Difference]: Without dead ends: 173 [2021-11-09 09:33:28,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:33:28,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-09 09:33:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-09 09:33:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-09 09:33:28,273 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-09 09:33:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:28,274 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-09 09:33:28,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-09 09:33:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 09:33:28,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:28,279 INFO L513 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] [2021-11-09 09:33:28,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:33:28,280 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:28,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:28,281 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-09 09:33:28,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:28,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405019339] [2021-11-09 09:33:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:28,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:28,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:28,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405019339] [2021-11-09 09:33:28,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405019339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:28,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:28,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:33:28,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215055103] [2021-11-09 09:33:28,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:33:28,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:33:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:33:28,399 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:28,944 INFO L93 Difference]: Finished difference Result 377 states and 490 transitions. [2021-11-09 09:33:28,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:33:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-09 09:33:28,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:28,948 INFO L225 Difference]: With dead ends: 377 [2021-11-09 09:33:28,948 INFO L226 Difference]: Without dead ends: 294 [2021-11-09 09:33:28,950 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:28,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-09 09:33:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 175. [2021-11-09 09:33:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 174 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-09 09:33:28,988 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2021-11-09 09:33:28,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:28,989 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-09 09:33:28,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-09 09:33:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 09:33:29,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:29,004 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:29,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:33:29,005 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:29,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:29,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2021-11-09 09:33:29,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:29,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345372631] [2021-11-09 09:33:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:29,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:29,072 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:33:29,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473639926] [2021-11-09 09:33:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:29,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:29,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:29,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:29,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:33:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:29,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:33:29,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:29,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:29,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345372631] [2021-11-09 09:33:29,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:33:29,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473639926] [2021-11-09 09:33:29,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473639926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:29,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:29,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:29,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132348584] [2021-11-09 09:33:29,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:29,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:29,736 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:29,838 INFO L93 Difference]: Finished difference Result 367 states and 481 transitions. [2021-11-09 09:33:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:29,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-09 09:33:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:29,843 INFO L225 Difference]: With dead ends: 367 [2021-11-09 09:33:29,843 INFO L226 Difference]: Without dead ends: 196 [2021-11-09 09:33:29,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-09 09:33:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-11-09 09:33:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.306878306878307) internal successors, (247), 194 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 247 transitions. [2021-11-09 09:33:29,873 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 247 transitions. Word has length 96 [2021-11-09 09:33:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:29,873 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 247 transitions. [2021-11-09 09:33:29,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 247 transitions. [2021-11-09 09:33:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 09:33:29,876 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:29,879 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:29,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-09 09:33:30,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-09 09:33:30,081 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:30,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1343744819, now seen corresponding path program 1 times [2021-11-09 09:33:30,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:30,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832377849] [2021-11-09 09:33:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:30,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:30,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:33:30,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127309811] [2021-11-09 09:33:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:30,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:30,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:30,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:30,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:33:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:30,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:33:30,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:33:30,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:30,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832377849] [2021-11-09 09:33:30,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:33:30,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127309811] [2021-11-09 09:33:30,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127309811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:30,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:30,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:30,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976834891] [2021-11-09 09:33:30,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:30,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:30,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:30,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:30,618 INFO L87 Difference]: Start difference. First operand 195 states and 247 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:30,708 INFO L93 Difference]: Finished difference Result 298 states and 384 transitions. [2021-11-09 09:33:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:30,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-09 09:33:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:30,711 INFO L225 Difference]: With dead ends: 298 [2021-11-09 09:33:30,711 INFO L226 Difference]: Without dead ends: 216 [2021-11-09 09:33:30,712 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:30,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-09 09:33:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-11-09 09:33:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 209 states have (on average 1.277511961722488) internal successors, (267), 214 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 267 transitions. [2021-11-09 09:33:30,720 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 267 transitions. Word has length 96 [2021-11-09 09:33:30,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:30,721 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 267 transitions. [2021-11-09 09:33:30,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,721 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 267 transitions. [2021-11-09 09:33:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 09:33:30,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:30,723 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:30,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:30,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:30,951 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:30,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:30,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1663949871, now seen corresponding path program 1 times [2021-11-09 09:33:30,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:30,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895457371] [2021-11-09 09:33:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:30,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:30,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:33:30,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140885203] [2021-11-09 09:33:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:30,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:30,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:30,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:30,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:33:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:31,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:33:31,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:31,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:31,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895457371] [2021-11-09 09:33:31,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:33:31,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140885203] [2021-11-09 09:33:31,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140885203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:31,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:31,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:33:31,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580653543] [2021-11-09 09:33:31,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:33:31,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:31,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:33:31,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:33:31,551 INFO L87 Difference]: Start difference. First operand 215 states and 267 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:31,651 INFO L93 Difference]: Finished difference Result 418 states and 522 transitions. [2021-11-09 09:33:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:33:31,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-09 09:33:31,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:31,654 INFO L225 Difference]: With dead ends: 418 [2021-11-09 09:33:31,654 INFO L226 Difference]: Without dead ends: 207 [2021-11-09 09:33:31,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-09 09:33:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2021-11-09 09:33:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.2615384615384615) internal successors, (246), 200 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2021-11-09 09:33:31,664 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 96 [2021-11-09 09:33:31,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:31,664 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2021-11-09 09:33:31,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2021-11-09 09:33:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 09:33:31,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:31,667 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:31,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:31,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:31,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:31,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:31,887 INFO L85 PathProgramCache]: Analyzing trace with hash 569918303, now seen corresponding path program 1 times [2021-11-09 09:33:31,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:31,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687044063] [2021-11-09 09:33:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:31,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:31,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:33:31,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020447411] [2021-11-09 09:33:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:31,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:31,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:31,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:31,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:33:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:32,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:33:32,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:33:32,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:32,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687044063] [2021-11-09 09:33:32,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:33:32,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020447411] [2021-11-09 09:33:32,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020447411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:32,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:32,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:33:32,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747410933] [2021-11-09 09:33:32,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:33:32,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:32,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:33:32,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:33:32,485 INFO L87 Difference]: Start difference. First operand 201 states and 246 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:32,584 INFO L93 Difference]: Finished difference Result 295 states and 364 transitions. [2021-11-09 09:33:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:33:32,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-09 09:33:32,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:32,588 INFO L225 Difference]: With dead ends: 295 [2021-11-09 09:33:32,588 INFO L226 Difference]: Without dead ends: 193 [2021-11-09 09:33:32,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-09 09:33:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2021-11-09 09:33:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2430939226519337) internal successors, (225), 186 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2021-11-09 09:33:32,597 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 96 [2021-11-09 09:33:32,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:32,600 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2021-11-09 09:33:32,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,601 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2021-11-09 09:33:32,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 09:33:32,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:32,602 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:32,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:32,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-09 09:33:32,823 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:32,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:32,824 INFO L85 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2021-11-09 09:33:32,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:32,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039793449] [2021-11-09 09:33:32,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:32,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:32,871 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:33:32,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184410828] [2021-11-09 09:33:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:32,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:32,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:32,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:32,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:33:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:33,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:33:33,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:33,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:33,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039793449] [2021-11-09 09:33:33,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:33:33,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184410828] [2021-11-09 09:33:33,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184410828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:33,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:33,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:33,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954076858] [2021-11-09 09:33:33,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:33,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:33,614 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:33,677 INFO L93 Difference]: Finished difference Result 486 states and 579 transitions. [2021-11-09 09:33:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:33,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-09 09:33:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:33,680 INFO L225 Difference]: With dead ends: 486 [2021-11-09 09:33:33,680 INFO L226 Difference]: Without dead ends: 303 [2021-11-09 09:33:33,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:33,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-09 09:33:33,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2021-11-09 09:33:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 285 states have (on average 1.2280701754385965) internal successors, (350), 290 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2021-11-09 09:33:33,693 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 96 [2021-11-09 09:33:33,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:33,694 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2021-11-09 09:33:33,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:33,694 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2021-11-09 09:33:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:33:33,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:33,696 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:33,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:33,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:33,924 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2021-11-09 09:33:33,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:33,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209303071] [2021-11-09 09:33:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:33,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:33,947 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:33:33,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684424956] [2021-11-09 09:33:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:33,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:33,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:33,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:33,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:33:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:34,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:33:34,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:34,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:34,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209303071] [2021-11-09 09:33:34,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:33:34,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684424956] [2021-11-09 09:33:34,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684424956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:34,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:34,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:33:34,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34681308] [2021-11-09 09:33:34,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:33:34,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:33:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:33:34,634 INFO L87 Difference]: Start difference. First operand 291 states and 350 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:35,404 INFO L93 Difference]: Finished difference Result 474 states and 571 transitions. [2021-11-09 09:33:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:33:35,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-09 09:33:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:35,407 INFO L225 Difference]: With dead ends: 474 [2021-11-09 09:33:35,408 INFO L226 Difference]: Without dead ends: 231 [2021-11-09 09:33:35,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:35,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-09 09:33:35,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-11-09 09:33:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 225 states have (on average 1.208888888888889) internal successors, (272), 230 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 272 transitions. [2021-11-09 09:33:35,420 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 272 transitions. Word has length 103 [2021-11-09 09:33:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:35,421 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 272 transitions. [2021-11-09 09:33:35,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 272 transitions. [2021-11-09 09:33:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-09 09:33:35,423 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:35,423 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:35,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:35,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:35,644 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:35,645 INFO L85 PathProgramCache]: Analyzing trace with hash 541560378, now seen corresponding path program 1 times [2021-11-09 09:33:35,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:35,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903396358] [2021-11-09 09:33:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:35,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:35,666 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:33:35,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345452190] [2021-11-09 09:33:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:35,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:35,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:35,668 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:35,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:33:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:36,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-09 09:33:36,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:36,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:33:36,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:33:36,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:36,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-09 09:33:36,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:36,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:36,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:36,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-09 09:33:37,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-09 09:33:37,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-11-09 09:33:37,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 66 [2021-11-09 09:33:37,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 47 [2021-11-09 09:33:37,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 09:33:37,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:37,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 47 [2021-11-09 09:33:38,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-09 09:33:38,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:38,030 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-09 09:33:38,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2021-11-09 09:33:40,726 INFO L354 Elim1Store]: treesize reduction 364, result has 11.9 percent of original size [2021-11-09 09:33:40,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2845 treesize of output 2294 [2021-11-09 09:33:40,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:40,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:40,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:40,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:33:48,033 WARN L207 SmtUtils]: Spent 7.22 s on a formula simplification. DAG size of input: 354 DAG size of output: 88 [2021-11-09 09:33:48,034 INFO L354 Elim1Store]: treesize reduction 7776, result has 3.0 percent of original size [2021-11-09 09:33:48,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 3314 treesize of output 1805 [2021-11-09 09:33:48,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:48,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903396358] [2021-11-09 09:33:48,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:33:48,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345452190] [2021-11-09 09:33:48,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-09 09:33:48,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:48,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-09 09:33:48,171 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-09 09:33:48,171 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-09 09:33:48,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:33:48,182 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:33:48,182 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:33:48,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:33:48,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:33:48,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:33:48,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:48,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:48,402 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:48,404 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:33:48,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:33:48 BoogieIcfgContainer [2021-11-09 09:33:48,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:33:48,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:33:48,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:33:48,454 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:33:48,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:27" (3/4) ... [2021-11-09 09:33:48,458 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 09:33:48,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:33:48,462 INFO L168 Benchmark]: Toolchain (without parser) took 24416.44 ms. Allocated memory was 107.0 MB in the beginning and 151.0 MB in the end (delta: 44.0 MB). Free memory was 80.0 MB in the beginning and 69.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:48,468 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory is still 52.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:33:48,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1297.78 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 45.8 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:48,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 184.67 ms. Allocated memory is still 107.0 MB. Free memory was 45.8 MB in the beginning and 38.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:48,470 INFO L168 Benchmark]: Boogie Preprocessor took 192.09 ms. Allocated memory is still 107.0 MB. Free memory was 38.7 MB in the beginning and 78.8 MB in the end (delta: -40.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:48,470 INFO L168 Benchmark]: RCFGBuilder took 1893.89 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 55.6 MB in the end (delta: 23.2 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:48,471 INFO L168 Benchmark]: TraceAbstraction took 20817.15 ms. Allocated memory was 107.0 MB in the beginning and 151.0 MB in the end (delta: 44.0 MB). Free memory was 54.6 MB in the beginning and 69.0 MB in the end (delta: -14.4 MB). Peak memory consumption was 63.9 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:48,471 INFO L168 Benchmark]: Witness Printer took 7.47 ms. Allocated memory is still 151.0 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:33:48,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory is still 52.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1297.78 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 45.8 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 184.67 ms. Allocated memory is still 107.0 MB. Free memory was 45.8 MB in the beginning and 38.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 192.09 ms. Allocated memory is still 107.0 MB. Free memory was 38.7 MB in the beginning and 78.8 MB in the end (delta: -40.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1893.89 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 55.6 MB in the end (delta: 23.2 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20817.15 ms. Allocated memory was 107.0 MB in the beginning and 151.0 MB in the end (delta: 44.0 MB). Free memory was 54.6 MB in the beginning and 69.0 MB in the end (delta: -14.4 MB). Peak memory consumption was 63.9 MB. Max. memory is 16.1 GB. * Witness Printer took 7.47 ms. Allocated memory is still 151.0 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 828]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseXor at line 824, overapproximation of bitwiseAnd at line 824. Possible FailurePath: [L785] int count_int_int = 0; [L812] int i; [L813] example_user_t *user, *tmp, *users=((void *)0); [L814] i=0 [L814] EXPR \read(i) [L814] COND TRUE i<10 [L815] user = (example_user_t*)malloc(sizeof(example_user_t)) [L816] COND FALSE !(user == ((void *)0)) [L819] EXPR \read(i) [L819] user->id = i [L820] EXPR \read(i) [L820] EXPR \read(i) [L820] user->cookie = i*i [L821] unsigned _ha_hashv; [L821] unsigned _hj_i,_hj_j,_hj_k; [L821] unsigned const char *_hj_key=(unsigned const char*)(&((user)->id)); [L821] _ha_hashv = 0xfeedbeefu [L821] EXPR _hj_j = 0x9e3779b9u [L821] _hj_i = _hj_j = 0x9e3779b9u [L821] _hj_k = (unsigned)(sizeof(int)) [L821] COND FALSE !(_hj_k >= 12U) [L821] _ha_hashv += (unsigned)(sizeof(int)) [L821] case 11: [L821] case 10: [L821] case 9: [L821] case 8: [L821] case 7: [L821] case 6: [L821] case 5: [L821] case 4: [L821] EXPR _hj_key[3] [L821] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L821] case 3: [L821] EXPR _hj_key[2] [L821] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L821] case 2: [L821] EXPR _hj_key[1] [L821] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L821] case 1: [L821] EXPR _hj_key[0] [L821] _hj_i += _hj_key[0] [L821] _hj_i -= _hj_j [L821] _hj_i -= _ha_hashv [L821] _hj_i ^= ( _ha_hashv >> 13 ) [L821] _hj_j -= _ha_hashv [L821] _hj_j -= _hj_i [L821] _hj_j ^= ( _hj_i << 8 ) [L821] _ha_hashv -= _hj_i [L821] _ha_hashv -= _hj_j [L821] _ha_hashv ^= ( _hj_j >> 13 ) [L821] _hj_i -= _hj_j [L821] _hj_i -= _ha_hashv [L821] _hj_i ^= ( _ha_hashv >> 12 ) [L821] _hj_j -= _ha_hashv [L821] _hj_j -= _hj_i [L821] _hj_j ^= ( _hj_i << 16 ) [L821] _ha_hashv -= _hj_i [L821] _ha_hashv -= _hj_j [L821] _ha_hashv ^= ( _hj_j >> 5 ) [L821] _hj_i -= _hj_j [L821] _hj_i -= _ha_hashv [L821] _hj_i ^= ( _ha_hashv >> 3 ) [L821] _hj_j -= _ha_hashv [L821] _hj_j -= _hj_i [L821] _hj_j ^= ( _hj_i << 10 ) [L821] _ha_hashv -= _hj_i [L821] _ha_hashv -= _hj_j [L821] _ha_hashv ^= ( _hj_j >> 15 ) [L821] (user)->hh.hashv = (_ha_hashv) [L821] (user)->hh.key = (char*) (&((user)->id)) [L821] (user)->hh.keylen = (unsigned) (sizeof(int)) [L821] COND TRUE !(users) [L821] (user)->hh.next = ((void *)0) [L821] (user)->hh.prev = ((void *)0) [L821] (user)->hh.tbl = (UT_hash_table*)malloc(sizeof(UT_hash_table)) [L821] EXPR (user)->hh.tbl [L821] COND FALSE !(!(user)->hh.tbl) [L821] (user)->hh.tbl [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->tail = &((user)->hh) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->num_buckets = 32U [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->log2_num_buckets = 5U [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->hho = (char*)(&(user)->hh) - (char*)(user) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->buckets = (UT_hash_bucket*)malloc(32U * sizeof(struct UT_hash_bucket)) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->signature = 0xa0111fe1u [L821] EXPR (user)->hh.tbl [L821] EXPR (user)->hh.tbl->buckets [L821] COND FALSE !(!(user)->hh.tbl->buckets) [L821] EXPR (user)->hh.tbl [L821] (user)->hh.tbl->buckets [L821] (users) = (user) [L821] unsigned _ha_bkt; [L821] EXPR (users)->hh.tbl [L821] EXPR (users)->hh.tbl->num_items [L821] (users)->hh.tbl->num_items++ [L821] EXPR (users)->hh.tbl [L821] EXPR (users)->hh.tbl->num_buckets [L821] _ha_bkt = ((_ha_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L821] EXPR (users)->hh.tbl [L821] EXPR (users)->hh.tbl->buckets [L821] UT_hash_bucket *_ha_head = &((users)->hh.tbl->buckets[_ha_bkt]); [L821] EXPR _ha_head->count [L821] _ha_head->count++ [L821] EXPR _ha_head->hh_head [L821] (&(user)->hh)->hh_next = _ha_head->hh_head [L821] (&(user)->hh)->hh_prev = ((void *)0) [L821] EXPR _ha_head->hh_head [L821] COND FALSE !(_ha_head->hh_head != ((void *)0)) [L821] _ha_head->hh_head = (&(user)->hh) [L821] EXPR _ha_head->count [L821] EXPR _ha_head->expand_mult [L821] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L821] EXPR (&(user)->hh)->tbl [L821] EXPR (&(user)->hh)->tbl->noexpand [L821] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L821] COND FALSE !((_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand) [L814] EXPR \read(i) [L814] i++ [L814] EXPR \read(i) [L814] COND FALSE !(i<10) [L823] i=0 [L823] EXPR \read(i) [L823] COND TRUE i<10 [L824] unsigned _hf_hashv; [L824] unsigned _hj_i,_hj_j,_hj_k; [L824] unsigned const char *_hj_key=(unsigned const char*)(&i); [L824] _hf_hashv = 0xfeedbeefu [L824] EXPR _hj_j = 0x9e3779b9u [L824] _hj_i = _hj_j = 0x9e3779b9u [L824] _hj_k = (unsigned)(sizeof(int)) [L824] COND FALSE !(_hj_k >= 12U) [L824] _hf_hashv += (unsigned)(sizeof(int)) [L824] case 11: [L824] case 10: [L824] case 9: [L824] case 8: [L824] case 7: [L824] case 6: [L824] case 5: [L824] case 4: [L824] EXPR _hj_key[3] [L824] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L824] case 3: [L824] EXPR _hj_key[2] [L824] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L824] case 2: [L824] EXPR _hj_key[1] [L824] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L824] case 1: [L824] EXPR _hj_key[0] [L824] _hj_i += _hj_key[0] [L824] _hj_i -= _hj_j [L824] _hj_i -= _hf_hashv [L824] _hj_i ^= ( _hf_hashv >> 13 ) [L824] _hj_j -= _hf_hashv [L824] _hj_j -= _hj_i [L824] _hj_j ^= ( _hj_i << 8 ) [L824] _hf_hashv -= _hj_i [L824] _hf_hashv -= _hj_j [L824] _hf_hashv ^= ( _hj_j >> 13 ) [L824] _hj_i -= _hj_j [L824] _hj_i -= _hf_hashv [L824] _hj_i ^= ( _hf_hashv >> 12 ) [L824] _hj_j -= _hf_hashv [L824] _hj_j -= _hj_i [L824] _hj_j ^= ( _hj_i << 16 ) [L824] _hf_hashv -= _hj_i [L824] _hf_hashv -= _hj_j [L824] _hf_hashv ^= ( _hj_j >> 5 ) [L824] _hj_i -= _hj_j [L824] _hj_i -= _hf_hashv [L824] _hj_i ^= ( _hf_hashv >> 3 ) [L824] _hj_j -= _hf_hashv [L824] _hj_j -= _hj_i [L824] _hj_j ^= ( _hj_i << 10 ) [L824] _hf_hashv -= _hj_i [L824] _hf_hashv -= _hj_j [L824] _hf_hashv ^= ( _hj_j >> 15 ) [L824] (tmp) = ((void *)0) [L824] COND TRUE \read(*users) [L824] unsigned _hf_bkt; [L824] EXPR (users)->hh.tbl [L824] EXPR (users)->hh.tbl->num_buckets [L824] _hf_bkt = ((_hf_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L824] EXPR (users)->hh.tbl [L824] EXPR (users)->hh.tbl->buckets [L824] EXPR ((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head [L824] COND FALSE !(((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head != ((void *)0)) [L824] (tmp) = ((void *)0) [L824] COND FALSE !((tmp) != ((void *)0)) [L825] COND FALSE !(tmp != ((void *)0)) [L828] reach_error() - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 206 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 20.6s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1738 SDtfs, 884 SDslu, 1464 SDs, 0 SdLazy, 370 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=7, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 145 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 746 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 628 ConstructedInterpolants, 0 QuantifiedInterpolants, 1153 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2038 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-09 09:33:48,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX --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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:33:51,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:33:51,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:33:51,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:33:51,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:33:51,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:33:51,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:33:51,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:33:51,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:33:51,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:33:51,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:33:51,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:33:51,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:33:51,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:33:51,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:33:51,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:33:51,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:33:51,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:33:51,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:33:51,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:33:51,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:33:51,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:33:51,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:33:51,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:33:51,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:33:51,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:33:51,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:33:51,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:33:51,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:33:51,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:33:51,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:33:51,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:33:51,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:33:51,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:33:51,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:33:51,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:33:51,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:33:51,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:33:51,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:33:51,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:33:51,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:33:51,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 09:33:51,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:33:51,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:33:51,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:33:51,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:33:51,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:33:51,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:33:51,177 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:33:51,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:33:51,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:33:51,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:33:51,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:33:51,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:33:51,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:33:51,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:33:51,179 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:33:51,179 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:33:51,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:33:51,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:33:51,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:33:51,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:33:51,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:33:51,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:33:51,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:33:51,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:51,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:33:51,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:33:51,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:33:51,182 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:33:51,182 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:33:51,182 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:33:51,182 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:33:51,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:33:51,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:33:51,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:33:51,183 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2021-11-09 09:33:51,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:33:51,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:33:51,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:33:51,698 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:33:51,699 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:33:51,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-09 09:33:51,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/data/76009a827/f31ab430dc9a4491a21e0648cf6bbc91/FLAG91079054f [2021-11-09 09:33:52,407 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:33:52,408 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-09 09:33:52,431 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/data/76009a827/f31ab430dc9a4491a21e0648cf6bbc91/FLAG91079054f [2021-11-09 09:33:52,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/data/76009a827/f31ab430dc9a4491a21e0648cf6bbc91 [2021-11-09 09:33:52,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:33:52,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:33:52,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:52,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:33:52,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:33:52,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:52" (1/1) ... [2021-11-09 09:33:52,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a93f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:52, skipping insertion in model container [2021-11-09 09:33:52,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:52" (1/1) ... [2021-11-09 09:33:52,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:33:52,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:33:53,337 WARN L228 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_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-09 09:33:53,469 WARN L228 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_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-09 09:33:53,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:53,539 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:33:53,578 WARN L228 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_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-09 09:33:53,703 WARN L228 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_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-09 09:33:53,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:53,796 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:33:53,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53 WrapperNode [2021-11-09 09:33:53,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:53,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:33:53,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:33:53,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:33:53,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (1/1) ... [2021-11-09 09:33:53,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (1/1) ... [2021-11-09 09:33:53,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:33:53,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:33:53,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:33:53,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:33:53,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (1/1) ... [2021-11-09 09:33:53,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (1/1) ... [2021-11-09 09:33:53,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (1/1) ... [2021-11-09 09:33:53,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (1/1) ... [2021-11-09 09:33:54,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (1/1) ... [2021-11-09 09:33:54,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (1/1) ... [2021-11-09 09:33:54,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (1/1) ... [2021-11-09 09:33:54,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:33:54,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:33:54,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:33:54,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:33:54,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (1/1) ... [2021-11-09 09:33:54,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:54,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:54,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:33:54,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:33:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 09:33:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:33:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:33:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 09:33:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:33:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:33:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:33:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:33:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:33:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:33:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:33:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:33:59,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:33:59,121 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-09 09:33:59,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:59 BoogieIcfgContainer [2021-11-09 09:33:59,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:33:59,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:33:59,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:33:59,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:33:59,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:33:52" (1/3) ... [2021-11-09 09:33:59,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc7b5cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:59, skipping insertion in model container [2021-11-09 09:33:59,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:53" (2/3) ... [2021-11-09 09:33:59,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc7b5cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:59, skipping insertion in model container [2021-11-09 09:33:59,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:59" (3/3) ... [2021-11-09 09:33:59,132 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2021-11-09 09:33:59,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:33:59,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 09:33:59,192 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:33:59,199 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 [2021-11-09 09:33:59,200 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 09:33:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:59,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 09:33:59,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:59,236 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:59,237 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:59,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-09 09:33:59,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:33:59,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445439769] [2021-11-09 09:33:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:59,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:33:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:33:59,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:33:59,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:33:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:59,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 09:33:59,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:59,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:33:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:59,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:33:59,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445439769] [2021-11-09 09:33:59,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445439769] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:59,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:59,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:33:59,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618792566] [2021-11-09 09:33:59,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:33:59,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:33:59,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:33:59,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:33:59,653 INFO L87 Difference]: Start difference. First operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:59,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:59,696 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-09 09:33:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:33:59,698 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-09 09:33:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:59,711 INFO L225 Difference]: With dead ends: 410 [2021-11-09 09:33:59,711 INFO L226 Difference]: Without dead ends: 173 [2021-11-09 09:33:59,716 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:33:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-09 09:33:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-09 09:33:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-09 09:33:59,768 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-09 09:33:59,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:59,769 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-09 09:33:59,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-09 09:33:59,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 09:33:59,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:59,773 INFO L513 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] [2021-11-09 09:33:59,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:00,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:00,002 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:00,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:00,003 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-09 09:34:00,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:00,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005921322] [2021-11-09 09:34:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:00,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:00,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:00,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:00,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:34:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:00,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:00,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:00,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:34:00,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-09 09:34:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:00,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:00,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:00,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005921322] [2021-11-09 09:34:00,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005921322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:00,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:00,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:34:00,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908147968] [2021-11-09 09:34:00,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:34:00,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:00,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:34:00,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:34:00,806 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:04,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:04,636 INFO L93 Difference]: Finished difference Result 459 states and 596 transitions. [2021-11-09 09:34:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:04,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-09 09:34:04,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:04,641 INFO L225 Difference]: With dead ends: 459 [2021-11-09 09:34:04,641 INFO L226 Difference]: Without dead ends: 376 [2021-11-09 09:34:04,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-09 09:34:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 175. [2021-11-09 09:34:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 174 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-09 09:34:04,661 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2021-11-09 09:34:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:04,661 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-09 09:34:04,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-09 09:34:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 09:34:04,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:04,666 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:04,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:04,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:04,882 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2021-11-09 09:34:04,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:04,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623580759] [2021-11-09 09:34:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:04,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:04,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:04,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:04,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:34:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:05,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:05,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:05,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:05,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:05,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623580759] [2021-11-09 09:34:05,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623580759] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:05,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:05,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 09:34:05,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023922754] [2021-11-09 09:34:05,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:05,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:05,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:05,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:05,835 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:05,985 INFO L93 Difference]: Finished difference Result 355 states and 462 transitions. [2021-11-09 09:34:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:05,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-09 09:34:05,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:05,991 INFO L225 Difference]: With dead ends: 355 [2021-11-09 09:34:05,991 INFO L226 Difference]: Without dead ends: 184 [2021-11-09 09:34:05,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:34:05,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-09 09:34:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2021-11-09 09:34:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 172 states have (on average 1.2906976744186047) internal successors, (222), 177 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 222 transitions. [2021-11-09 09:34:06,008 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 222 transitions. Word has length 96 [2021-11-09 09:34:06,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:06,009 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 222 transitions. [2021-11-09 09:34:06,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 222 transitions. [2021-11-09 09:34:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 09:34:06,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:06,015 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:06,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:06,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:06,228 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:06,228 INFO L85 PathProgramCache]: Analyzing trace with hash 890123355, now seen corresponding path program 1 times [2021-11-09 09:34:06,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:06,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205049124] [2021-11-09 09:34:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:06,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:06,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:06,232 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:06,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:34:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:06,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:06,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:07,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:07,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:07,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205049124] [2021-11-09 09:34:07,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205049124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:07,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:07,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 09:34:07,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402207118] [2021-11-09 09:34:07,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:07,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:07,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:07,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:07,870 INFO L87 Difference]: Start difference. First operand 178 states and 222 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:08,586 INFO L93 Difference]: Finished difference Result 459 states and 570 transitions. [2021-11-09 09:34:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:08,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-09 09:34:08,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:08,590 INFO L225 Difference]: With dead ends: 459 [2021-11-09 09:34:08,590 INFO L226 Difference]: Without dead ends: 285 [2021-11-09 09:34:08,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:08,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-09 09:34:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 273. [2021-11-09 09:34:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 267 states have (on average 1.2883895131086143) internal successors, (344), 272 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 344 transitions. [2021-11-09 09:34:08,612 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 344 transitions. Word has length 96 [2021-11-09 09:34:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:08,613 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 344 transitions. [2021-11-09 09:34:08,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 344 transitions. [2021-11-09 09:34:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:34:08,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:08,620 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:08,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:08,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:08,848 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:08,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2000987094, now seen corresponding path program 1 times [2021-11-09 09:34:08,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:08,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051356143] [2021-11-09 09:34:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:08,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:08,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:08,852 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:08,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:34:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:09,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:09,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:09,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:10,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:10,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051356143] [2021-11-09 09:34:10,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051356143] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:10,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:10,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 09:34:10,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560343320] [2021-11-09 09:34:10,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:10,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:10,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:10,068 INFO L87 Difference]: Start difference. First operand 273 states and 344 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:10,160 INFO L93 Difference]: Finished difference Result 504 states and 645 transitions. [2021-11-09 09:34:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:10,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-09 09:34:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:10,165 INFO L225 Difference]: With dead ends: 504 [2021-11-09 09:34:10,165 INFO L226 Difference]: Without dead ends: 276 [2021-11-09 09:34:10,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:10,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-09 09:34:10,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-09 09:34:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 270 states have (on average 1.2851851851851852) internal successors, (347), 275 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 347 transitions. [2021-11-09 09:34:10,201 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 347 transitions. Word has length 103 [2021-11-09 09:34:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:10,204 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 347 transitions. [2021-11-09 09:34:10,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 347 transitions. [2021-11-09 09:34:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 09:34:10,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:10,224 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:10,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:10,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:10,440 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash 416871670, now seen corresponding path program 1 times [2021-11-09 09:34:10,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:10,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527159357] [2021-11-09 09:34:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:10,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:10,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:10,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:10,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:34:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:10,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:34:10,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:34:11,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:34:11,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:11,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527159357] [2021-11-09 09:34:11,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527159357] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:34:11,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:34:11,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-09 09:34:11,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166550173] [2021-11-09 09:34:11,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:34:11,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:11,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:34:11,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:34:11,919 INFO L87 Difference]: Start difference. First operand 276 states and 347 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:12,348 INFO L93 Difference]: Finished difference Result 513 states and 657 transitions. [2021-11-09 09:34:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:34:12,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-09 09:34:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:12,352 INFO L225 Difference]: With dead ends: 513 [2021-11-09 09:34:12,352 INFO L226 Difference]: Without dead ends: 282 [2021-11-09 09:34:12,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:34:12,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-09 09:34:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-11-09 09:34:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 276 states have (on average 1.2789855072463767) internal successors, (353), 281 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 353 transitions. [2021-11-09 09:34:12,375 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 353 transitions. Word has length 106 [2021-11-09 09:34:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:12,381 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 353 transitions. [2021-11-09 09:34:12,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 353 transitions. [2021-11-09 09:34:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-09 09:34:12,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:12,384 INFO L513 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:12,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:12,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:12,599 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:12,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:12,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1224332106, now seen corresponding path program 2 times [2021-11-09 09:34:12,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:12,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341830127] [2021-11-09 09:34:12,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:34:12,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:12,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:12,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:12,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:34:13,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 09:34:13,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:34:13,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:13,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-09 09:34:13,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-09 09:34:13,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:13,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341830127] [2021-11-09 09:34:13,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341830127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:13,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:13,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 09:34:13,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385961166] [2021-11-09 09:34:13,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:13,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:13,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:13,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:13,826 INFO L87 Difference]: Start difference. First operand 282 states and 353 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:14,006 INFO L93 Difference]: Finished difference Result 431 states and 555 transitions. [2021-11-09 09:34:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:14,007 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-09 09:34:14,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:14,012 INFO L225 Difference]: With dead ends: 431 [2021-11-09 09:34:14,012 INFO L226 Difference]: Without dead ends: 295 [2021-11-09 09:34:14,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:34:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-09 09:34:14,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 288. [2021-11-09 09:34:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.2163120567375887) internal successors, (343), 287 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 343 transitions. [2021-11-09 09:34:14,032 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 343 transitions. Word has length 112 [2021-11-09 09:34:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:14,034 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 343 transitions. [2021-11-09 09:34:14,034 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 343 transitions. [2021-11-09 09:34:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-09 09:34:14,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:14,037 INFO L513 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:14,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:14,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:14,254 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2125746730, now seen corresponding path program 1 times [2021-11-09 09:34:14,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:14,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063662479] [2021-11-09 09:34:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:14,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:14,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:14,262 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:14,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 09:34:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:14,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:34:14,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 09:34:15,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 09:34:16,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:16,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063662479] [2021-11-09 09:34:16,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063662479] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:34:16,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:34:16,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-09 09:34:16,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459417510] [2021-11-09 09:34:16,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 09:34:16,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:16,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 09:34:16,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:34:16,466 INFO L87 Difference]: Start difference. First operand 288 states and 343 transitions. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:18,990 INFO L93 Difference]: Finished difference Result 543 states and 661 transitions. [2021-11-09 09:34:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:34:18,991 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-09 09:34:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:18,994 INFO L225 Difference]: With dead ends: 543 [2021-11-09 09:34:18,994 INFO L226 Difference]: Without dead ends: 300 [2021-11-09 09:34:18,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:34:18,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-09 09:34:19,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-11-09 09:34:19,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 1.2074829931972788) internal successors, (355), 299 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 355 transitions. [2021-11-09 09:34:19,013 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 355 transitions. Word has length 112 [2021-11-09 09:34:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:19,014 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 355 transitions. [2021-11-09 09:34:19,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:19,014 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 355 transitions. [2021-11-09 09:34:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 09:34:19,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:19,017 INFO L513 BasicCegarLoop]: trace histogram [14, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:19,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:19,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:19,238 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:19,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1333207466, now seen corresponding path program 2 times [2021-11-09 09:34:19,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:19,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455083350] [2021-11-09 09:34:19,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:34:19,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:19,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:19,241 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:19,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 09:34:19,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 09:34:19,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:34:19,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:34:19,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-09 09:34:20,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-09 09:34:21,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:21,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455083350] [2021-11-09 09:34:21,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455083350] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:21,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:21,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-09 09:34:21,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284970218] [2021-11-09 09:34:21,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:34:21,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:21,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:34:21,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:21,092 INFO L87 Difference]: Start difference. First operand 300 states and 355 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:21,270 INFO L93 Difference]: Finished difference Result 435 states and 521 transitions. [2021-11-09 09:34:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:21,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-09 09:34:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:21,274 INFO L225 Difference]: With dead ends: 435 [2021-11-09 09:34:21,274 INFO L226 Difference]: Without dead ends: 293 [2021-11-09 09:34:21,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:21,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-09 09:34:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 288. [2021-11-09 09:34:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.1879432624113475) internal successors, (335), 287 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 335 transitions. [2021-11-09 09:34:21,291 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 335 transitions. Word has length 124 [2021-11-09 09:34:21,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:21,292 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 335 transitions. [2021-11-09 09:34:21,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 335 transitions. [2021-11-09 09:34:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 09:34:21,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:21,295 INFO L513 BasicCegarLoop]: trace histogram [14, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:21,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:21,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:21,523 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:21,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:21,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1075042028, now seen corresponding path program 1 times [2021-11-09 09:34:21,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:21,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69028649] [2021-11-09 09:34:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:21,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:21,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:21,527 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:21,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 09:34:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:22,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 09:34:22,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-09 09:34:23,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-09 09:34:25,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:25,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69028649] [2021-11-09 09:34:25,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69028649] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:34:25,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:34:25,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-09 09:34:25,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95464396] [2021-11-09 09:34:25,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-09 09:34:25,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:25,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-09 09:34:25,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:34:25,427 INFO L87 Difference]: Start difference. First operand 288 states and 335 transitions. Second operand has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:40,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:40,724 INFO L93 Difference]: Finished difference Result 555 states and 669 transitions. [2021-11-09 09:34:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-09 09:34:40,726 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-09 09:34:40,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:40,729 INFO L225 Difference]: With dead ends: 555 [2021-11-09 09:34:40,729 INFO L226 Difference]: Without dead ends: 312 [2021-11-09 09:34:40,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 09:34:40,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-09 09:34:40,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-09 09:34:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 306 states have (on average 1.173202614379085) internal successors, (359), 311 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 359 transitions. [2021-11-09 09:34:40,753 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 359 transitions. Word has length 124 [2021-11-09 09:34:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:40,753 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 359 transitions. [2021-11-09 09:34:40,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:40,754 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 359 transitions. [2021-11-09 09:34:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-09 09:34:40,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:40,756 INFO L513 BasicCegarLoop]: trace histogram [30, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:40,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:40,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:40,983 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:40,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1997207020, now seen corresponding path program 2 times [2021-11-09 09:34:40,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:40,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786584483] [2021-11-09 09:34:40,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:34:40,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:40,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:40,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:40,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 09:34:41,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:34:41,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:34:42,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 09:34:42,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-09 09:34:43,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-09 09:34:49,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:49,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786584483] [2021-11-09 09:34:49,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786584483] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:34:49,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:34:49,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-09 09:34:49,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259498150] [2021-11-09 09:34:49,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-09 09:34:49,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-09 09:34:49,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=933, Invalid=3099, Unknown=0, NotChecked=0, Total=4032 [2021-11-09 09:34:49,074 INFO L87 Difference]: Start difference. First operand 312 states and 359 transitions. Second operand has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:28,988 INFO L93 Difference]: Finished difference Result 609 states and 729 transitions. [2021-11-09 09:36:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-09 09:36:28,989 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-09 09:36:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:28,992 INFO L225 Difference]: With dead ends: 609 [2021-11-09 09:36:28,992 INFO L226 Difference]: Without dead ends: 342 [2021-11-09 09:36:28,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=2700, Invalid=6042, Unknown=0, NotChecked=0, Total=8742 [2021-11-09 09:36:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-09 09:36:29,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-11-09 09:36:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 336 states have (on average 1.1577380952380953) internal successors, (389), 341 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 389 transitions. [2021-11-09 09:36:29,019 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 389 transitions. Word has length 148 [2021-11-09 09:36:29,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:29,020 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 389 transitions. [2021-11-09 09:36:29,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 389 transitions. [2021-11-09 09:36:29,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-09 09:36:29,023 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:29,023 INFO L513 BasicCegarLoop]: trace histogram [44, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:29,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-09 09:36:29,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:36:29,243 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:36:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:29,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1100843084, now seen corresponding path program 3 times [2021-11-09 09:36:29,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:36:29,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837640518] [2021-11-09 09:36:29,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:36:29,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:36:29,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:36:29,245 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:36:29,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 09:36:30,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 09:36:30,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:36:30,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:36:30,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:36:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2021-11-09 09:36:30,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:36:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2021-11-09 09:36:31,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:36:31,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837640518] [2021-11-09 09:36:31,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837640518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:31,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:31,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:36:31,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334970416] [2021-11-09 09:36:31,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:36:31,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:36:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:36:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:36:31,658 INFO L87 Difference]: Start difference. First operand 342 states and 389 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:34,376 INFO L93 Difference]: Finished difference Result 588 states and 667 transitions. [2021-11-09 09:36:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:36:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-11-09 09:36:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:34,381 INFO L225 Difference]: With dead ends: 588 [2021-11-09 09:36:34,381 INFO L226 Difference]: Without dead ends: 291 [2021-11-09 09:36:34,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:36:34,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-09 09:36:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-11-09 09:36:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 285 states have (on average 1.1403508771929824) internal successors, (325), 290 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 325 transitions. [2021-11-09 09:36:34,403 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 325 transitions. Word has length 178 [2021-11-09 09:36:34,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:34,404 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 325 transitions. [2021-11-09 09:36:34,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:34,405 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 325 transitions. [2021-11-09 09:36:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-09 09:36:34,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:34,407 INFO L513 BasicCegarLoop]: trace histogram [44, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:34,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:36:34,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:36:34,624 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:36:34,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:34,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1442706610, now seen corresponding path program 1 times [2021-11-09 09:36:34,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:36:34,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892804644] [2021-11-09 09:36:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:34,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:36:34,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:36:34,628 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:36:34,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 09:36:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:36,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-09 09:36:36,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:36:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-09 09:36:37,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:36:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-09 09:36:43,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:36:43,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892804644] [2021-11-09 09:36:43,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892804644] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:36:43,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:36:43,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 09:36:43,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584203922] [2021-11-09 09:36:43,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 09:36:43,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:36:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 09:36:43,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 09:36:43,262 INFO L87 Difference]: Start difference. First operand 291 states and 325 transitions. Second operand has 66 states, 66 states have (on average 2.6515151515151514) internal successors, (175), 66 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:38:26,691 INFO L93 Difference]: Finished difference Result 489 states and 584 transitions. [2021-11-09 09:38:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-09 09:38:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.6515151515151514) internal successors, (175), 66 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-11-09 09:38:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:38:26,695 INFO L225 Difference]: With dead ends: 489 [2021-11-09 09:38:26,695 INFO L226 Difference]: Without dead ends: 324 [2021-11-09 09:38:26,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=3199, Invalid=6113, Unknown=0, NotChecked=0, Total=9312 [2021-11-09 09:38:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-09 09:38:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2021-11-09 09:38:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 318 states have (on average 1.1257861635220126) internal successors, (358), 323 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 358 transitions. [2021-11-09 09:38:26,730 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 358 transitions. Word has length 185 [2021-11-09 09:38:26,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:38:26,730 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 358 transitions. [2021-11-09 09:38:26,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.6515151515151514) internal successors, (175), 66 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:38:26,731 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 358 transitions. [2021-11-09 09:38:26,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-09 09:38:26,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:38:26,734 INFO L513 BasicCegarLoop]: trace histogram [64, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:26,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:38:26,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:38:26,955 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:38:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:26,956 INFO L85 PathProgramCache]: Analyzing trace with hash 670930938, now seen corresponding path program 2 times [2021-11-09 09:38:26,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:38:26,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967288063] [2021-11-09 09:38:26,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:38:26,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:38:26,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:38:26,958 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:38:26,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 09:38:28,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:38:28,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:38:28,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-09 09:38:28,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:38:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-09 09:38:34,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:38:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-09 09:38:53,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:38:53,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967288063] [2021-11-09 09:38:53,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967288063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:38:53,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:38:53,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 132 [2021-11-09 09:38:53,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835050631] [2021-11-09 09:38:53,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-09 09:38:53,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:38:53,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-09 09:38:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4486, Invalid=12806, Unknown=0, NotChecked=0, Total=17292 [2021-11-09 09:38:53,324 INFO L87 Difference]: Start difference. First operand 324 states and 358 transitions. Second operand has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:00,712 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 133 [2021-11-09 09:43:48,984 WARN L207 SmtUtils]: Spent 7.12 s on a formula simplification that was a NOOP. DAG size: 196 [2021-11-09 09:43:58,736 WARN L207 SmtUtils]: Spent 7.21 s on a formula simplification that was a NOOP. DAG size: 193 [2021-11-09 09:44:08,340 WARN L207 SmtUtils]: Spent 7.01 s on a formula simplification that was a NOOP. DAG size: 190 [2021-11-09 09:44:17,482 WARN L207 SmtUtils]: Spent 6.47 s on a formula simplification that was a NOOP. DAG size: 187 [2021-11-09 09:44:26,222 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification that was a NOOP. DAG size: 184 [2021-11-09 09:44:34,655 WARN L207 SmtUtils]: Spent 5.51 s on a formula simplification that was a NOOP. DAG size: 181 [2021-11-09 09:44:43,959 WARN L207 SmtUtils]: Spent 6.62 s on a formula simplification that was a NOOP. DAG size: 178 [2021-11-09 09:44:54,529 WARN L207 SmtUtils]: Spent 7.88 s on a formula simplification that was a NOOP. DAG size: 175 [2021-11-09 09:45:03,287 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 172 [2021-11-09 09:45:13,378 WARN L207 SmtUtils]: Spent 7.41 s on a formula simplification that was a NOOP. DAG size: 169 [2021-11-09 09:45:21,765 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 166 [2021-11-09 09:45:36,619 WARN L207 SmtUtils]: Spent 5.35 s on a formula simplification that was a NOOP. DAG size: 160 [2021-11-09 09:46:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:46:32,313 INFO L93 Difference]: Finished difference Result 555 states and 683 transitions. [2021-11-09 09:46:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-09 09:46:32,314 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2021-11-09 09:46:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:46:32,316 INFO L225 Difference]: With dead ends: 555 [2021-11-09 09:46:32,316 INFO L226 Difference]: Without dead ends: 390 [2021-11-09 09:46:32,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 303.3s TimeCoverageRelationStatistics Valid=12934, Invalid=25286, Unknown=0, NotChecked=0, Total=38220 [2021-11-09 09:46:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-09 09:46:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2021-11-09 09:46:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 384 states have (on average 1.1041666666666667) internal successors, (424), 389 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:46:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 424 transitions. [2021-11-09 09:46:32,386 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 424 transitions. Word has length 218 [2021-11-09 09:46:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:46:32,387 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 424 transitions. [2021-11-09 09:46:32,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:46:32,387 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 424 transitions. [2021-11-09 09:46:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-09 09:46:32,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:46:32,393 INFO L513 BasicCegarLoop]: trace histogram [130, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:46:32,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-09 09:46:32,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:46:32,629 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:46:32,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:46:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash 249758330, now seen corresponding path program 3 times [2021-11-09 09:46:32,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:46:32,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146255475] [2021-11-09 09:46:32,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:46:32,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:46:32,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:46:32,633 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:46:32,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a7d016e-616a-4ee2-8eb3-35b957c31cd9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process