./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_fib-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_fib-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU --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 2f188ac4b0bdfe335e0fcb7c5645493965a99a7b8a1d7a552e9d512c30775fb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:29:07,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:29:07,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:29:07,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:29:07,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:29:07,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:29:07,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:29:07,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:29:07,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:29:07,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:29:07,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:29:07,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:29:07,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:29:07,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:29:07,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:29:07,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:29:07,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:29:07,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:29:07,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:29:07,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:29:07,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:29:07,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:29:07,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:29:07,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:29:07,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:29:07,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:29:07,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:29:07,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:29:07,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:29:07,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:29:07,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:29:07,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:29:07,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:29:07,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:29:07,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:29:07,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:29:07,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:29:07,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:29:07,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:29:07,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:29:07,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:29:07,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:29:07,425 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:29:07,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:29:07,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:29:07,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:29:07,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:29:07,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:29:07,434 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:29:07,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:29:07,435 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:29:07,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:29:07,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:29:07,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:29:07,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:29:07,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:29:07,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:29:07,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:29:07,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:29:07,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:29:07,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:29:07,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:29:07,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:29:07,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:29:07,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:29:07,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:29:07,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:29:07,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:29:07,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:29:07,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:29:07,440 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:29:07,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:29:07,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:29:07,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:29:07,443 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_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f188ac4b0bdfe335e0fcb7c5645493965a99a7b8a1d7a552e9d512c30775fb8 [2021-11-02 22:29:07,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:29:07,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:29:07,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:29:07,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:29:07,727 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:29:07,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/seq-pthread/cs_fib-2.i [2021-11-02 22:29:07,824 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/data/8df50e04c/8c6886da193c4843afe6bcd851d1ad8e/FLAG8b2274052 [2021-11-02 22:29:08,484 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:29:08,485 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/sv-benchmarks/c/seq-pthread/cs_fib-2.i [2021-11-02 22:29:08,513 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/data/8df50e04c/8c6886da193c4843afe6bcd851d1ad8e/FLAG8b2274052 [2021-11-02 22:29:08,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/data/8df50e04c/8c6886da193c4843afe6bcd851d1ad8e [2021-11-02 22:29:08,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:29:08,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:29:08,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:29:08,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:29:08,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:29:08,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d4700b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08, skipping insertion in model container [2021-11-02 22:29:08,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:29:08,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:29:09,175 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_11dc4cac-a67e-463b-be86-864b6d0399e5/sv-benchmarks/c/seq-pthread/cs_fib-2.i[23457,23470] [2021-11-02 22:29:09,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:29:09,391 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:29:09,434 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_11dc4cac-a67e-463b-be86-864b6d0399e5/sv-benchmarks/c/seq-pthread/cs_fib-2.i[23457,23470] [2021-11-02 22:29:09,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:29:09,543 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:29:09,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09 WrapperNode [2021-11-02 22:29:09,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:29:09,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:29:09,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:29:09,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:29:09,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (1/1) ... [2021-11-02 22:29:09,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (1/1) ... [2021-11-02 22:29:09,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:29:09,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:29:09,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:29:09,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:29:09,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (1/1) ... [2021-11-02 22:29:09,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (1/1) ... [2021-11-02 22:29:09,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (1/1) ... [2021-11-02 22:29:09,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (1/1) ... [2021-11-02 22:29:09,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (1/1) ... [2021-11-02 22:29:09,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (1/1) ... [2021-11-02 22:29:09,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (1/1) ... [2021-11-02 22:29:09,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:29:09,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:29:09,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:29:09,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:29:09,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (1/1) ... [2021-11-02 22:29:09,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:29:09,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:09,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:29:09,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:29:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:29:09,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:29:09,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:29:09,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:29:09,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:29:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:29:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:29:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:29:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:29:10,253 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:29:10,254 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:29:10,282 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:29:10,291 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:29:10,305 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:29:10,311 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:29:15,235 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-4: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2021-11-02 22:29:15,236 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-4: assume !(0 != ~__CS_ret~0 % 256); [2021-11-02 22:29:15,236 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-5: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2021-11-02 22:29:15,236 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-5: assume !(0 != ~__CS_ret~0 % 256);havoc __CS_cs_#t~nondet5, __CS_cs_#t~nondet6, __CS_cs_#t~ite7, __CS_cs_~k~0;__CS_cs_~k~0 := __CS_cs_#t~nondet5;havoc __CS_cs_#t~nondet5;assume_abort_if_not_#in~cond := (if ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 6 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; [2021-11-02 22:29:15,236 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-6: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2021-11-02 22:29:15,236 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-6: assume !(0 != ~__CS_ret~0 % 256); [2021-11-02 22:29:15,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-20: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2021-11-02 22:29:15,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-20: assume !(0 != ~__CS_ret~0 % 256); [2021-11-02 22:29:15,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-21: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2021-11-02 22:29:15,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-21: assume !(0 != ~__CS_ret~0 % 256);havoc __CS_cs_#t~nondet5, __CS_cs_#t~nondet6, __CS_cs_#t~ite7, __CS_cs_~k~0;__CS_cs_~k~0 := __CS_cs_#t~nondet5;havoc __CS_cs_#t~nondet5;assume_abort_if_not_#in~cond := (if ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 6 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; [2021-11-02 22:29:15,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-22: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2021-11-02 22:29:15,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-22: assume !(0 != ~__CS_ret~0 % 256); [2021-11-02 22:29:15,238 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-36: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2021-11-02 22:29:15,238 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-36: assume !(0 != ~__CS_ret~0 % 256); [2021-11-02 22:29:15,238 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-37: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2021-11-02 22:29:15,238 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-37: assume !(0 != ~__CS_ret~0 % 256);havoc __CS_cs_#t~nondet5, __CS_cs_#t~nondet6, __CS_cs_#t~ite7, __CS_cs_~k~0;__CS_cs_~k~0 := __CS_cs_#t~nondet5;havoc __CS_cs_#t~nondet5;assume_abort_if_not_#in~cond := (if ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 6 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; [2021-11-02 22:29:15,239 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-38: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0.base, main_thread_~#id1~0.offset);havoc main_thread_~#id1~0.base, main_thread_~#id1~0.offset;call ULTIMATE.dealloc(main_thread_~#id2~0.base, main_thread_~#id2~0.offset);havoc main_thread_~#id2~0.base, main_thread_~#id2~0.offset; [2021-11-02 22:29:15,239 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L571-38: assume !(0 != ~__CS_ret~0 % 256); [2021-11-02 22:29:15,239 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-12: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-02 22:29:15,239 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-12: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2021-11-02 22:29:15,239 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-14: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6;havoc __CS_cs_#t~ite7; [2021-11-02 22:29:15,239 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-15: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-02 22:29:15,239 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-15: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2021-11-02 22:29:15,239 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-17: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6;havoc __CS_cs_#t~ite7; [2021-11-02 22:29:15,240 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-18: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-02 22:29:15,240 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-18: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2021-11-02 22:29:15,240 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-20: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6;havoc __CS_cs_#t~ite7; [2021-11-02 22:29:15,240 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-60: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-02 22:29:15,240 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-60: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2021-11-02 22:29:15,240 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-62: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6;havoc __CS_cs_#t~ite7; [2021-11-02 22:29:15,240 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-63: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-02 22:29:15,241 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-63: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2021-11-02 22:29:15,241 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-65: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6;havoc __CS_cs_#t~ite7; [2021-11-02 22:29:15,241 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-66: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-02 22:29:15,241 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-66: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2021-11-02 22:29:15,241 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-68: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6;havoc __CS_cs_#t~ite7; [2021-11-02 22:29:15,241 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-108: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-02 22:29:15,241 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-108: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2021-11-02 22:29:15,241 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-110: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6;havoc __CS_cs_#t~ite7; [2021-11-02 22:29:15,242 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-111: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-02 22:29:15,242 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-111: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2021-11-02 22:29:15,242 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-113: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6;havoc __CS_cs_#t~ite7; [2021-11-02 22:29:15,242 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-114: assume 0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-02 22:29:15,242 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-114: assume !(0 != __CS_cs_#t~nondet6 && 5 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2021-11-02 22:29:15,242 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L576-116: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6;havoc __CS_cs_#t~ite7; [2021-11-02 22:29:15,242 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##205: assume !(0 == assume_abort_if_not_~cond); [2021-11-02 22:29:15,243 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##204: assume 0 == assume_abort_if_not_~cond;assume false; [2021-11-02 22:29:15,243 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##212: assume !(0 == assume_abort_if_not_~cond); [2021-11-02 22:29:15,243 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume 0 == assume_abort_if_not_~cond;assume false; [2021-11-02 22:29:15,243 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-4: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2021-11-02 22:29:15,243 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-5: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2021-11-02 22:29:15,243 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-6: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2021-11-02 22:29:15,243 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-20: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2021-11-02 22:29:15,243 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-21: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2021-11-02 22:29:15,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-22: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2021-11-02 22:29:15,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-36: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2021-11-02 22:29:15,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-37: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2021-11-02 22:29:15,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-38: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2021-11-02 22:29:15,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-8: assume 0 == assume_abort_if_not_~cond;assume false; [2021-11-02 22:29:15,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-8: assume !(0 == assume_abort_if_not_~cond); [2021-11-02 22:29:15,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-36: assume 0 == assume_abort_if_not_~cond;assume false; [2021-11-02 22:29:15,245 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-36: assume !(0 == assume_abort_if_not_~cond); [2021-11-02 22:29:15,245 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-64: assume 0 == assume_abort_if_not_~cond;assume false; [2021-11-02 22:29:15,245 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-64: assume !(0 == assume_abort_if_not_~cond); [2021-11-02 22:29:15,245 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##61: assume 0 == assume_abort_if_not_~cond;assume false; [2021-11-02 22:29:15,245 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##62: assume !(0 == assume_abort_if_not_~cond); [2021-11-02 22:29:15,245 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume 0 == assume_abort_if_not_~cond;assume false; [2021-11-02 22:29:15,245 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume !(0 == assume_abort_if_not_~cond); [2021-11-02 22:29:15,246 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##355: assume !(0 == assume_abort_if_not_~cond); [2021-11-02 22:29:15,246 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##354: assume 0 == assume_abort_if_not_~cond;assume false; [2021-11-02 22:29:15,246 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##362: assume !(0 == assume_abort_if_not_~cond); [2021-11-02 22:29:15,246 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##361: assume 0 == assume_abort_if_not_~cond;assume false; [2021-11-02 22:29:15,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:29:15,262 INFO L299 CfgBuilder]: Removed 334 assume(true) statements. [2021-11-02 22:29:15,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:29:15 BoogieIcfgContainer [2021-11-02 22:29:15,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:29:15,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:29:15,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:29:15,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:29:15,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:29:08" (1/3) ... [2021-11-02 22:29:15,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29094290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:29:15, skipping insertion in model container [2021-11-02 22:29:15,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:09" (2/3) ... [2021-11-02 22:29:15,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29094290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:29:15, skipping insertion in model container [2021-11-02 22:29:15,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:29:15" (3/3) ... [2021-11-02 22:29:15,274 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_fib-2.i [2021-11-02 22:29:15,279 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:29:15,279 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-02 22:29:15,331 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:29:15,336 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 [2021-11-02 22:29:15,337 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-02 22:29:15,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 392 states, 384 states have (on average 1.5651041666666667) internal successors, (601), 391 states have internal predecessors, (601), 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) [2021-11-02 22:29:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 22:29:15,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:15,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:15,380 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 22:29:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash 306120471, now seen corresponding path program 1 times [2021-11-02 22:29:15,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:15,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840943043] [2021-11-02 22:29:15,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:15,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:15,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:15,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840943043] [2021-11-02 22:29:15,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840943043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:15,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:15,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:29:15,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333549020] [2021-11-02 22:29:15,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:29:15,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:29:15,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:15,820 INFO L87 Difference]: Start difference. First operand has 392 states, 384 states have (on average 1.5651041666666667) internal successors, (601), 391 states have internal predecessors, (601), 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 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2021-11-02 22:29:15,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:15,923 INFO L93 Difference]: Finished difference Result 787 states and 1209 transitions. [2021-11-02 22:29:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:15,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2021-11-02 22:29:15,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:15,940 INFO L225 Difference]: With dead ends: 787 [2021-11-02 22:29:15,940 INFO L226 Difference]: Without dead ends: 393 [2021-11-02 22:29:15,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:15,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-02 22:29:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2021-11-02 22:29:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 382 states have (on average 1.3193717277486912) internal successors, (504), 388 states have internal predecessors, (504), 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) [2021-11-02 22:29:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 504 transitions. [2021-11-02 22:29:16,004 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 504 transitions. Word has length 92 [2021-11-02 22:29:16,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:16,005 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 504 transitions. [2021-11-02 22:29:16,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2021-11-02 22:29:16,005 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 504 transitions. [2021-11-02 22:29:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 22:29:16,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:16,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:16,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:29:16,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 22:29:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:16,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1940473127, now seen corresponding path program 1 times [2021-11-02 22:29:16,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:16,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376890977] [2021-11-02 22:29:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:16,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:16,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:16,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376890977] [2021-11-02 22:29:16,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376890977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:16,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:16,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:29:16,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156426240] [2021-11-02 22:29:16,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:29:16,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:16,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:29:16,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:16,166 INFO L87 Difference]: Start difference. First operand 389 states and 504 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) [2021-11-02 22:29:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:16,212 INFO L93 Difference]: Finished difference Result 777 states and 1008 transitions. [2021-11-02 22:29:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:16,213 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 [2021-11-02 22:29:16,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:16,217 INFO L225 Difference]: With dead ends: 777 [2021-11-02 22:29:16,217 INFO L226 Difference]: Without dead ends: 391 [2021-11-02 22:29:16,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-02 22:29:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 390. [2021-11-02 22:29:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 383 states have (on average 1.318537859007833) internal successors, (505), 389 states have internal predecessors, (505), 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) [2021-11-02 22:29:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 505 transitions. [2021-11-02 22:29:16,249 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 505 transitions. Word has length 96 [2021-11-02 22:29:16,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:16,250 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 505 transitions. [2021-11-02 22:29:16,250 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) [2021-11-02 22:29:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 505 transitions. [2021-11-02 22:29:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 22:29:16,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:16,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:16,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:29:16,266 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 22:29:16,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:16,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1103101335, now seen corresponding path program 1 times [2021-11-02 22:29:16,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:16,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343320760] [2021-11-02 22:29:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:16,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:16,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:16,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343320760] [2021-11-02 22:29:16,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343320760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:16,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539198320] [2021-11-02 22:29:16,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:16,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:16,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:16,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:16,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:29:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:16,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:29:16,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:17,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539198320] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:17,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:17,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 22:29:17,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355666838] [2021-11-02 22:29:17,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:29:17,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:29:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:17,144 INFO L87 Difference]: Start difference. First operand 390 states and 505 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2021-11-02 22:29:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:17,189 INFO L93 Difference]: Finished difference Result 780 states and 1011 transitions. [2021-11-02 22:29:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:17,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 98 [2021-11-02 22:29:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:17,193 INFO L225 Difference]: With dead ends: 780 [2021-11-02 22:29:17,193 INFO L226 Difference]: Without dead ends: 393 [2021-11-02 22:29:17,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-02 22:29:17,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 392. [2021-11-02 22:29:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 385 states have (on average 1.316883116883117) internal successors, (507), 391 states have internal predecessors, (507), 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) [2021-11-02 22:29:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 507 transitions. [2021-11-02 22:29:17,226 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 507 transitions. Word has length 98 [2021-11-02 22:29:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:17,228 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 507 transitions. [2021-11-02 22:29:17,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2021-11-02 22:29:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 507 transitions. [2021-11-02 22:29:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 22:29:17,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:17,232 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] [2021-11-02 22:29:17,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:17,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:17,447 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 22:29:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1105430741, now seen corresponding path program 2 times [2021-11-02 22:29:17,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:17,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513476544] [2021-11-02 22:29:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:17,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:29:17,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:17,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513476544] [2021-11-02 22:29:17,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513476544] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:17,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410707783] [2021-11-02 22:29:17,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:17,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:17,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:17,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:17,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:29:19,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:29:19,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:29:20,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:29:20,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410707783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:20,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:29:20,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-02 22:29:20,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779321196] [2021-11-02 22:29:20,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:20,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:20,977 INFO L87 Difference]: Start difference. First operand 392 states and 507 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-11-02 22:29:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:21,067 INFO L93 Difference]: Finished difference Result 686 states and 877 transitions. [2021-11-02 22:29:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:21,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 100 [2021-11-02 22:29:21,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:21,073 INFO L225 Difference]: With dead ends: 686 [2021-11-02 22:29:21,073 INFO L226 Difference]: Without dead ends: 684 [2021-11-02 22:29:21,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:29:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-11-02 22:29:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 658. [2021-11-02 22:29:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 651 states have (on average 1.30568356374808) internal successors, (850), 657 states have internal predecessors, (850), 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) [2021-11-02 22:29:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 850 transitions. [2021-11-02 22:29:21,103 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 850 transitions. Word has length 100 [2021-11-02 22:29:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:21,105 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 850 transitions. [2021-11-02 22:29:21,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-11-02 22:29:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 850 transitions. [2021-11-02 22:29:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 22:29:21,108 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:21,108 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] [2021-11-02 22:29:21,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:21,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:21,323 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 22:29:21,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:21,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1462225016, now seen corresponding path program 1 times [2021-11-02 22:29:21,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:21,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866377821] [2021-11-02 22:29:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:21,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:29:21,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:21,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866377821] [2021-11-02 22:29:21,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866377821] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:21,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965281290] [2021-11-02 22:29:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:21,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:21,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:21,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:21,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:29:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:21,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:29:21,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:22,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965281290] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:22,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:22,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-11-02 22:29:22,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860153385] [2021-11-02 22:29:22,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:29:22,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:29:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:29:22,164 INFO L87 Difference]: Start difference. First operand 658 states and 850 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 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) [2021-11-02 22:29:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:22,325 INFO L93 Difference]: Finished difference Result 1334 states and 1724 transitions. [2021-11-02 22:29:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:29:22,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 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 102 [2021-11-02 22:29:22,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:22,331 INFO L225 Difference]: With dead ends: 1334 [2021-11-02 22:29:22,331 INFO L226 Difference]: Without dead ends: 679 [2021-11-02 22:29:22,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:29:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-11-02 22:29:22,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 670. [2021-11-02 22:29:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 663 states have (on average 1.301659125188537) internal successors, (863), 669 states have internal predecessors, (863), 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) [2021-11-02 22:29:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 863 transitions. [2021-11-02 22:29:22,353 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 863 transitions. Word has length 102 [2021-11-02 22:29:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:22,353 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 863 transitions. [2021-11-02 22:29:22,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 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) [2021-11-02 22:29:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 863 transitions. [2021-11-02 22:29:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 22:29:22,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:22,356 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:22,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:22,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:22,579 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 22:29:22,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:22,579 INFO L85 PathProgramCache]: Analyzing trace with hash 760019640, now seen corresponding path program 2 times [2021-11-02 22:29:22,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:22,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733033307] [2021-11-02 22:29:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:22,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-02 22:29:22,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:22,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733033307] [2021-11-02 22:29:22,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733033307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:22,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578025735] [2021-11-02 22:29:22,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:22,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:22,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:22,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:22,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:29:25,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:29:25,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:25,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:29:25,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-02 22:29:25,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578025735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:25,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:29:25,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-02 22:29:25,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739911392] [2021-11-02 22:29:25,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:29:25,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:25,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:29:25,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:25,504 INFO L87 Difference]: Start difference. First operand 670 states and 863 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-02 22:29:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:25,529 INFO L93 Difference]: Finished difference Result 1136 states and 1443 transitions. [2021-11-02 22:29:25,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:25,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 114 [2021-11-02 22:29:25,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:25,537 INFO L225 Difference]: With dead ends: 1136 [2021-11-02 22:29:25,537 INFO L226 Difference]: Without dead ends: 670 [2021-11-02 22:29:25,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:25,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-02 22:29:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2021-11-02 22:29:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 663 states have (on average 1.3001508295625943) internal successors, (862), 669 states have internal predecessors, (862), 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) [2021-11-02 22:29:25,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 862 transitions. [2021-11-02 22:29:25,563 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 862 transitions. Word has length 114 [2021-11-02 22:29:25,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:25,565 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 862 transitions. [2021-11-02 22:29:25,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-02 22:29:25,565 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 862 transitions. [2021-11-02 22:29:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-02 22:29:25,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:25,568 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:25,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:25,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:25,787 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 22:29:25,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:25,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1221301873, now seen corresponding path program 1 times [2021-11-02 22:29:25,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:25,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688367488] [2021-11-02 22:29:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:25,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-02 22:29:25,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:25,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688367488] [2021-11-02 22:29:25,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688367488] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:25,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443842857] [2021-11-02 22:29:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:25,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:25,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:25,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:25,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:29:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:26,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:29:26,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-02 22:29:26,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443842857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:26,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:26,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-02 22:29:26,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133704284] [2021-11-02 22:29:26,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:29:26,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:29:26,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:26,752 INFO L87 Difference]: Start difference. First operand 670 states and 862 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2021-11-02 22:29:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:26,822 INFO L93 Difference]: Finished difference Result 1336 states and 1720 transitions. [2021-11-02 22:29:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:29:26,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 [2021-11-02 22:29:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:26,828 INFO L225 Difference]: With dead ends: 1336 [2021-11-02 22:29:26,828 INFO L226 Difference]: Without dead ends: 689 [2021-11-02 22:29:26,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-11-02 22:29:26,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 680. [2021-11-02 22:29:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 673 states have (on average 1.2971768202080238) internal successors, (873), 679 states have internal predecessors, (873), 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) [2021-11-02 22:29:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 873 transitions. [2021-11-02 22:29:26,857 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 873 transitions. Word has length 124 [2021-11-02 22:29:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:26,857 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 873 transitions. [2021-11-02 22:29:26,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2021-11-02 22:29:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 873 transitions. [2021-11-02 22:29:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 22:29:26,860 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:26,860 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:26,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:27,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-02 22:29:27,077 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 22:29:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1248119441, now seen corresponding path program 2 times [2021-11-02 22:29:27,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:27,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967507046] [2021-11-02 22:29:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:27,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-02 22:29:27,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:27,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967507046] [2021-11-02 22:29:27,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967507046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:27,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551035655] [2021-11-02 22:29:27,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:27,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:27,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:27,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:27,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:29:29,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:29:29,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:29,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 22:29:29,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-02 22:29:30,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551035655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:30,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:29:30,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-02 22:29:30,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162009380] [2021-11-02 22:29:30,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:29:30,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:30,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:29:30,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:29:30,731 INFO L87 Difference]: Start difference. First operand 680 states and 873 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 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) [2021-11-02 22:29:30,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:30,846 INFO L93 Difference]: Finished difference Result 706 states and 898 transitions. [2021-11-02 22:29:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:29:30,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 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 134 [2021-11-02 22:29:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:30,851 INFO L225 Difference]: With dead ends: 706 [2021-11-02 22:29:30,851 INFO L226 Difference]: Without dead ends: 704 [2021-11-02 22:29:30,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:29:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-02 22:29:30,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 682. [2021-11-02 22:29:30,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 675 states have (on average 1.2962962962962963) internal successors, (875), 681 states have internal predecessors, (875), 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) [2021-11-02 22:29:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 875 transitions. [2021-11-02 22:29:30,871 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 875 transitions. Word has length 134 [2021-11-02 22:29:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:30,872 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 875 transitions. [2021-11-02 22:29:30,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 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) [2021-11-02 22:29:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 875 transitions. [2021-11-02 22:29:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-02 22:29:30,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:30,875 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:30,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:31,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:31,091 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 22:29:31,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:31,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1147112596, now seen corresponding path program 1 times [2021-11-02 22:29:31,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:31,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214916113] [2021-11-02 22:29:31,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:31,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-02 22:29:31,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:31,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214916113] [2021-11-02 22:29:31,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214916113] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:31,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424835111] [2021-11-02 22:29:31,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:31,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:31,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:31,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:31,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:29:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:31,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:29:31,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-02 22:29:32,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424835111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:32,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:32,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-02 22:29:32,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130066995] [2021-11-02 22:29:32,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:29:32,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:32,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:29:32,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:29:32,214 INFO L87 Difference]: Start difference. First operand 682 states and 875 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2021-11-02 22:29:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:32,291 INFO L93 Difference]: Finished difference Result 1350 states and 1735 transitions. [2021-11-02 22:29:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:29:32,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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 136 [2021-11-02 22:29:32,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:32,297 INFO L225 Difference]: With dead ends: 1350 [2021-11-02 22:29:32,297 INFO L226 Difference]: Without dead ends: 701 [2021-11-02 22:29:32,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:29:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2021-11-02 22:29:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 692. [2021-11-02 22:29:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 685 states have (on average 1.2934306569343066) internal successors, (886), 691 states have internal predecessors, (886), 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) [2021-11-02 22:29:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 886 transitions. [2021-11-02 22:29:32,322 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 886 transitions. Word has length 136 [2021-11-02 22:29:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:32,323 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 886 transitions. [2021-11-02 22:29:32,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2021-11-02 22:29:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 886 transitions. [2021-11-02 22:29:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-02 22:29:32,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:32,326 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:32,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:32,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:32,543 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-02 22:29:32,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash 302807702, now seen corresponding path program 2 times [2021-11-02 22:29:32,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:32,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975453124] [2021-11-02 22:29:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:32,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-02 22:29:32,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:32,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975453124] [2021-11-02 22:29:32,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975453124] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:32,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54641964] [2021-11-02 22:29:32,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:32,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:32,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:32,788 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:32,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11dc4cac-a67e-463b-be86-864b6d0399e5/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:29:35,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:29:35,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:35,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 22:29:35,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:35,488 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:29:35,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 250 treesize of output 240