./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/cohencu-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/cohencu-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg --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 bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:42:18,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:42:18,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:42:18,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:42:18,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:42:18,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:42:18,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:42:18,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:42:18,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:42:18,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:42:18,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:42:18,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:42:18,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:42:18,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:42:18,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:42:18,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:42:18,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:42:18,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:42:18,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:42:18,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:42:18,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:42:18,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:42:18,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:42:18,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:42:18,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:42:18,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:42:18,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:42:18,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:42:18,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:42:18,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:42:18,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:42:18,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:42:18,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:42:18,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:42:18,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:42:18,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:42:18,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:42:18,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:42:18,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:42:18,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:42:18,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:42:18,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:42:18,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:42:18,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:42:18,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:42:18,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:42:18,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:42:18,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:42:18,958 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:42:18,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:42:18,959 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:42:18,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:42:18,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:42:18,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:42:18,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:42:18,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:42:18,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:42:18,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:42:18,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:42:18,962 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:42:18,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:42:18,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:42:18,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:42:18,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:42:18,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:42:18,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:42:18,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:42:18,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:42:18,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:42:18,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:42:18,966 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:42:18,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:42:18,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:42:18,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:42:18,968 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_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff [2021-10-28 08:42:19,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:42:19,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:42:19,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:42:19,288 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:42:19,289 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:42:19,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2021-10-28 08:42:19,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/data/9df3f9d3c/f2669ac1dca94d1a93010dddbe52b07d/FLAG6f0c202ff [2021-10-28 08:42:19,928 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:42:19,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2021-10-28 08:42:19,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/data/9df3f9d3c/f2669ac1dca94d1a93010dddbe52b07d/FLAG6f0c202ff [2021-10-28 08:42:20,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/data/9df3f9d3c/f2669ac1dca94d1a93010dddbe52b07d [2021-10-28 08:42:20,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:42:20,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:42:20,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:42:20,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:42:20,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:42:20,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d135250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20, skipping insertion in model container [2021-10-28 08:42:20,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:42:20,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:42:20,551 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_a39ae483-e472-4ab6-b745-a860562d3483/sv-benchmarks/c/nla-digbench/cohencu-ll.c[588,601] [2021-10-28 08:42:20,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:42:20,585 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:42:20,598 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_a39ae483-e472-4ab6-b745-a860562d3483/sv-benchmarks/c/nla-digbench/cohencu-ll.c[588,601] [2021-10-28 08:42:20,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:42:20,638 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:42:20,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20 WrapperNode [2021-10-28 08:42:20,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:42:20,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:42:20,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:42:20,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:42:20,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:42:20,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:42:20,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:42:20,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:42:20,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:42:20,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:42:20,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:42:20,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:42:20,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (1/1) ... [2021-10-28 08:42:20,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:42:20,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:20,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:42:20,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:42:20,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:42:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:42:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:42:20,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:42:21,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:42:21,248 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-28 08:42:21,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:21 BoogieIcfgContainer [2021-10-28 08:42:21,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:42:21,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:42:21,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:42:21,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:42:21,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:42:20" (1/3) ... [2021-10-28 08:42:21,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6673bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:42:21, skipping insertion in model container [2021-10-28 08:42:21,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:42:20" (2/3) ... [2021-10-28 08:42:21,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6673bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:42:21, skipping insertion in model container [2021-10-28 08:42:21,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:21" (3/3) ... [2021-10-28 08:42:21,278 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2021-10-28 08:42:21,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:42:21,292 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-28 08:42:21,365 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:42:21,373 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 [2021-10-28 08:42:21,374 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-28 08:42:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 39 states have (on average 1.641025641025641) internal successors, (64), 50 states have internal predecessors, (64), 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) [2021-10-28 08:42:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 08:42:21,401 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:21,402 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 08:42:21,402 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:21,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:21,409 INFO L85 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-10-28 08:42:21,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:21,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253262093] [2021-10-28 08:42:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:21,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:21,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:21,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253262093] [2021-10-28 08:42:21,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253262093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:21,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:21,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:21,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515801962] [2021-10-28 08:42:21,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:21,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:21,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:21,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:21,759 INFO L87 Difference]: Start difference. First operand has 51 states, 39 states have (on average 1.641025641025641) internal successors, (64), 50 states have internal predecessors, (64), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-28 08:42:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:22,063 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2021-10-28 08:42:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:22,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-10-28 08:42:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:22,076 INFO L225 Difference]: With dead ends: 97 [2021-10-28 08:42:22,077 INFO L226 Difference]: Without dead ends: 44 [2021-10-28 08:42:22,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:42:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-28 08:42:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-10-28 08:42:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 42 states have internal predecessors, (43), 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) [2021-10-28 08:42:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-10-28 08:42:22,124 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 5 [2021-10-28 08:42:22,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:22,124 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-10-28 08:42:22,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-28 08:42:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-10-28 08:42:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 08:42:22,126 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:22,126 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:22,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:42:22,127 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:22,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2021-10-28 08:42:22,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:22,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490066644] [2021-10-28 08:42:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:22,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:22,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:22,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768196754] [2021-10-28 08:42:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:22,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:22,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:22,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:22,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:42:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:22,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:42:22,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:22,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:22,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490066644] [2021-10-28 08:42:22,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:22,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768196754] [2021-10-28 08:42:22,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768196754] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:22,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:22,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:22,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365775033] [2021-10-28 08:42:22,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:22,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:22,362 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-28 08:42:22,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:22,508 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-10-28 08:42:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:22,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-10-28 08:42:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:22,513 INFO L225 Difference]: With dead ends: 84 [2021-10-28 08:42:22,513 INFO L226 Difference]: Without dead ends: 82 [2021-10-28 08:42:22,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:42:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-28 08:42:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 47. [2021-10-28 08:42:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.236842105263158) internal successors, (47), 46 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-10-28 08:42:22,528 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 7 [2021-10-28 08:42:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:22,528 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-10-28 08:42:22,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-28 08:42:22,529 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-10-28 08:42:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:42:22,530 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:22,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:22,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:42:22,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:22,755 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:22,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:22,756 INFO L85 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2021-10-28 08:42:22,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:22,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934909390] [2021-10-28 08:42:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:22,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:22,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:22,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528885092] [2021-10-28 08:42:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:22,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:22,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:22,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:22,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 08:42:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:22,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:42:22,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:22,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:22,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934909390] [2021-10-28 08:42:22,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:22,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528885092] [2021-10-28 08:42:22,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528885092] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:22,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:22,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:22,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130450920] [2021-10-28 08:42:22,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:22,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:22,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:22,990 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:23,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:23,093 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2021-10-28 08:42:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:23,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 08:42:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:23,099 INFO L225 Difference]: With dead ends: 82 [2021-10-28 08:42:23,100 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 08:42:23,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:42:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 08:42:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2021-10-28 08:42:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 57 states have internal predecessors, (61), 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) [2021-10-28 08:42:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-10-28 08:42:23,126 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 9 [2021-10-28 08:42:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:23,126 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-10-28 08:42:23,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-10-28 08:42:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:42:23,127 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:23,128 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:23,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 08:42:23,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:23,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:23,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:23,330 INFO L85 PathProgramCache]: Analyzing trace with hash -976588461, now seen corresponding path program 1 times [2021-10-28 08:42:23,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:23,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519665275] [2021-10-28 08:42:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:23,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:23,350 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:23,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322218356] [2021-10-28 08:42:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:23,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:23,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:23,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:23,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 08:42:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:23,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:42:23,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:23,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:23,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519665275] [2021-10-28 08:42:23,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:23,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322218356] [2021-10-28 08:42:23,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322218356] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:23,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:23,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:23,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165870244] [2021-10-28 08:42:23,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:23,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:23,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:23,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:23,681 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-28 08:42:23,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:23,819 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-10-28 08:42:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:42:23,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-28 08:42:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:23,820 INFO L225 Difference]: With dead ends: 79 [2021-10-28 08:42:23,821 INFO L226 Difference]: Without dead ends: 55 [2021-10-28 08:42:23,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:42:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-28 08:42:23,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-10-28 08:42:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.2) internal successors, (54), 53 states have internal predecessors, (54), 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) [2021-10-28 08:42:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-10-28 08:42:23,832 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 11 [2021-10-28 08:42:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:23,832 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-10-28 08:42:23,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-28 08:42:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-10-28 08:42:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 08:42:23,833 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:23,834 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:23,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:42:24,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:24,063 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:24,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:24,063 INFO L85 PathProgramCache]: Analyzing trace with hash -417136811, now seen corresponding path program 1 times [2021-10-28 08:42:24,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:24,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651792078] [2021-10-28 08:42:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:24,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:24,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:24,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331433025] [2021-10-28 08:42:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:24,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:24,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:24,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:24,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 08:42:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:24,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:42:24,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:24,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:24,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651792078] [2021-10-28 08:42:24,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:24,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331433025] [2021-10-28 08:42:24,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331433025] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:42:24,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:42:24,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 08:42:24,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154277532] [2021-10-28 08:42:24,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:42:24,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:24,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:42:24,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:42:24,491 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-28 08:42:24,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:24,666 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2021-10-28 08:42:24,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:42:24,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-10-28 08:42:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:24,669 INFO L225 Difference]: With dead ends: 95 [2021-10-28 08:42:24,669 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 08:42:24,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:42:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 08:42:24,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 58. [2021-10-28 08:42:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.183673469387755) internal successors, (58), 57 states have internal predecessors, (58), 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) [2021-10-28 08:42:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-10-28 08:42:24,681 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 18 [2021-10-28 08:42:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:24,682 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-10-28 08:42:24,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-28 08:42:24,683 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-10-28 08:42:24,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:42:24,684 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:24,684 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:24,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:42:24,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:24,911 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:24,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1436360968, now seen corresponding path program 1 times [2021-10-28 08:42:24,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:24,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620985587] [2021-10-28 08:42:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:24,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:24,925 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:24,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32366647] [2021-10-28 08:42:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:24,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:24,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:24,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:24,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 08:42:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:25,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:42:25,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:25,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:25,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620985587] [2021-10-28 08:42:25,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:25,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32366647] [2021-10-28 08:42:25,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32366647] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:42:25,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:42:25,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 08:42:25,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585006267] [2021-10-28 08:42:25,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:42:25,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:25,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:42:25,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:42:25,235 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-10-28 08:42:25,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:25,391 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-10-28 08:42:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:42:25,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2021-10-28 08:42:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:25,394 INFO L225 Difference]: With dead ends: 93 [2021-10-28 08:42:25,395 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 08:42:25,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:42:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 08:42:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 60. [2021-10-28 08:42:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 59 states have internal predecessors, (60), 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) [2021-10-28 08:42:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-10-28 08:42:25,424 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 20 [2021-10-28 08:42:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:25,425 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-10-28 08:42:25,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-10-28 08:42:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-10-28 08:42:25,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:42:25,426 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:25,426 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:25,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:42:25,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:25,627 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:25,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1658232005, now seen corresponding path program 1 times [2021-10-28 08:42:25,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:25,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145932016] [2021-10-28 08:42:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:25,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:25,645 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:25,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365873758] [2021-10-28 08:42:25,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:25,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:25,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:25,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:25,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 08:42:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:25,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 08:42:25,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:26,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:26,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145932016] [2021-10-28 08:42:26,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:26,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365873758] [2021-10-28 08:42:26,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365873758] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:42:26,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:42:26,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 08:42:26,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836128123] [2021-10-28 08:42:26,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:42:26,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:26,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:42:26,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:42:26,106 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-28 08:42:26,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:26,280 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2021-10-28 08:42:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:42:26,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-10-28 08:42:26,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:26,282 INFO L225 Difference]: With dead ends: 92 [2021-10-28 08:42:26,283 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 08:42:26,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:42:26,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 08:42:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2021-10-28 08:42:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 70 states have internal predecessors, (73), 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) [2021-10-28 08:42:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2021-10-28 08:42:26,320 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 22 [2021-10-28 08:42:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:26,321 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2021-10-28 08:42:26,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-28 08:42:26,323 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2021-10-28 08:42:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 08:42:26,324 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:26,325 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:26,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:42:26,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 08:42:26,539 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash -914405458, now seen corresponding path program 1 times [2021-10-28 08:42:26,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:26,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338593214] [2021-10-28 08:42:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:26,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:26,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:26,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787051662] [2021-10-28 08:42:26,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:26,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:26,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:26,561 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:26,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 08:42:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:26,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 08:42:26,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:27,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:27,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338593214] [2021-10-28 08:42:27,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:27,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787051662] [2021-10-28 08:42:27,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787051662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:42:27,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:42:27,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 08:42:27,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763327104] [2021-10-28 08:42:27,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:42:27,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:27,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:42:27,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:42:27,225 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-10-28 08:42:27,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:27,490 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-10-28 08:42:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:42:27,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2021-10-28 08:42:27,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:27,496 INFO L225 Difference]: With dead ends: 75 [2021-10-28 08:42:27,496 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 08:42:27,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:42:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 08:42:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-10-28 08:42:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 70 states have internal predecessors, (72), 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) [2021-10-28 08:42:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-10-28 08:42:27,506 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 29 [2021-10-28 08:42:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:27,507 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-10-28 08:42:27,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-10-28 08:42:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-10-28 08:42:27,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 08:42:27,508 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:27,508 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:42:27,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:42:27,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:27,731 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:27,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:27,732 INFO L85 PathProgramCache]: Analyzing trace with hash -917268371, now seen corresponding path program 2 times [2021-10-28 08:42:27,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:27,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270015541] [2021-10-28 08:42:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:27,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:27,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:27,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308690058] [2021-10-28 08:42:27,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:42:27,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:27,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:27,755 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:27,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 08:42:27,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:42:27,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:42:27,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 08:42:27,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:28,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:28,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270015541] [2021-10-28 08:42:28,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:28,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308690058] [2021-10-28 08:42:28,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308690058] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:42:28,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:42:28,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 08:42:28,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169881852] [2021-10-28 08:42:28,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:42:28,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:42:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:42:28,276 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-10-28 08:42:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:28,643 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2021-10-28 08:42:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:42:28,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2021-10-28 08:42:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:28,645 INFO L225 Difference]: With dead ends: 114 [2021-10-28 08:42:28,645 INFO L226 Difference]: Without dead ends: 112 [2021-10-28 08:42:28,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:42:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-28 08:42:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2021-10-28 08:42:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 74 states have internal predecessors, (76), 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) [2021-10-28 08:42:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-10-28 08:42:28,665 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 29 [2021-10-28 08:42:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:28,667 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-10-28 08:42:28,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-10-28 08:42:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-10-28 08:42:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 08:42:28,669 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:28,669 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:28,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 08:42:28,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:28,891 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:28,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1724808433, now seen corresponding path program 1 times [2021-10-28 08:42:28,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:28,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333029759] [2021-10-28 08:42:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:28,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:28,906 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:28,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116526329] [2021-10-28 08:42:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:28,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:28,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:28,908 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:28,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 08:42:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:29,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 08:42:29,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:29,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:29,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333029759] [2021-10-28 08:42:29,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:29,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116526329] [2021-10-28 08:42:29,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116526329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:42:29,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:42:29,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 08:42:29,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443076498] [2021-10-28 08:42:29,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:42:29,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:29,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:42:29,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:42:29,606 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-10-28 08:42:29,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:29,817 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2021-10-28 08:42:29,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:42:29,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-10-28 08:42:29,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:29,818 INFO L225 Difference]: With dead ends: 77 [2021-10-28 08:42:29,818 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 08:42:29,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:42:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 08:42:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-28 08:42:29,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.15) internal successors, (69), 68 states have internal predecessors, (69), 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) [2021-10-28 08:42:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2021-10-28 08:42:29,826 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 31 [2021-10-28 08:42:29,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:29,826 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2021-10-28 08:42:29,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-10-28 08:42:29,827 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2021-10-28 08:42:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 08:42:29,828 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:29,828 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:42:29,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 08:42:30,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 08:42:30,042 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:30,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:30,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1026452976, now seen corresponding path program 2 times [2021-10-28 08:42:30,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:30,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257863365] [2021-10-28 08:42:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:30,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:30,053 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:30,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540833800] [2021-10-28 08:42:30,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:42:30,054 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:30,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:30,066 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:30,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 08:42:30,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:42:30,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:42:30,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 08:42:30,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:30,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:30,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257863365] [2021-10-28 08:42:30,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:30,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540833800] [2021-10-28 08:42:30,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540833800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:42:30,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:42:30,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 08:42:30,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300775533] [2021-10-28 08:42:30,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:42:30,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:42:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:42:30,919 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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) [2021-10-28 08:42:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:31,548 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2021-10-28 08:42:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:42:31,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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 31 [2021-10-28 08:42:31,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:31,549 INFO L225 Difference]: With dead ends: 105 [2021-10-28 08:42:31,549 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 08:42:31,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:42:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 08:42:31,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2021-10-28 08:42:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 70 states have internal predecessors, (71), 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) [2021-10-28 08:42:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-10-28 08:42:31,560 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 31 [2021-10-28 08:42:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:31,560 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-10-28 08:42:31,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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) [2021-10-28 08:42:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-10-28 08:42:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 08:42:31,562 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:31,562 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:42:31,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:42:31,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-28 08:42:31,782 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:42:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:31,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1421324371, now seen corresponding path program 2 times [2021-10-28 08:42:31,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:31,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731560446] [2021-10-28 08:42:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:31,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:31,799 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:42:31,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476718979] [2021-10-28 08:42:31,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:42:31,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:31,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:31,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:31,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 08:42:32,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 08:42:32,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:42:32,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 08:42:32,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 08:42:38,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:38,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731560446] [2021-10-28 08:42:38,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:42:38,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476718979] [2021-10-28 08:42:38,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476718979] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:38,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:38,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 08:42:38,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203243559] [2021-10-28 08:42:38,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:42:38,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:38,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:42:38,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2021-10-28 08:42:38,977 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-10-28 08:43:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:26,561 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-10-28 08:43:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:43:26,562 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 33 [2021-10-28 08:43:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:26,563 INFO L225 Difference]: With dead ends: 71 [2021-10-28 08:43:26,563 INFO L226 Difference]: Without dead ends: 53 [2021-10-28 08:43:26,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=72, Invalid=165, Unknown=3, NotChecked=0, Total=240 [2021-10-28 08:43:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-28 08:43:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-28 08:43:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.06) internal successors, (53), 52 states have internal predecessors, (53), 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) [2021-10-28 08:43:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-10-28 08:43:26,575 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 33 [2021-10-28 08:43:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:26,576 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-10-28 08:43:26,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-10-28 08:43:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-10-28 08:43:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 08:43:26,577 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:26,578 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:26,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:26,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 08:43:26,794 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:43:26,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:26,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1915973738, now seen corresponding path program 2 times [2021-10-28 08:43:26,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:26,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174503093] [2021-10-28 08:43:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:26,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:26,806 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:43:26,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585111298] [2021-10-28 08:43:26,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:43:26,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:43:26,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:26,808 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:43:26,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 08:43:27,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:43:27,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:43:27,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 08:43:27,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:27,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:27,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174503093] [2021-10-28 08:43:27,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:43:27,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585111298] [2021-10-28 08:43:27,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585111298] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:43:27,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:43:27,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 08:43:27,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867873799] [2021-10-28 08:43:27,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:43:27,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:28,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:43:28,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:43:28,001 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-10-28 08:43:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:28,354 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-10-28 08:43:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:43:28,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 40 [2021-10-28 08:43:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:28,356 INFO L225 Difference]: With dead ends: 68 [2021-10-28 08:43:28,356 INFO L226 Difference]: Without dead ends: 66 [2021-10-28 08:43:28,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:43:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-28 08:43:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-10-28 08:43:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 61 states have internal predecessors, (63), 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) [2021-10-28 08:43:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2021-10-28 08:43:28,373 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 40 [2021-10-28 08:43:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:28,375 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2021-10-28 08:43:28,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-10-28 08:43:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2021-10-28 08:43:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-28 08:43:28,383 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:28,383 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:28,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-10-28 08:43:28,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:43:28,590 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:43:28,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1290365657, now seen corresponding path program 2 times [2021-10-28 08:43:28,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:28,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675104284] [2021-10-28 08:43:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:28,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:28,614 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:43:28,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662969138] [2021-10-28 08:43:28,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:43:28,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:43:28,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:28,619 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:43:28,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 08:43:30,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 08:43:30,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:43:30,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-28 08:43:30,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 08:43:48,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:48,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675104284] [2021-10-28 08:43:48,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:43:48,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662969138] [2021-10-28 08:43:48,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662969138] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:48,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:48,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 08:43:48,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527087576] [2021-10-28 08:43:48,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 08:43:48,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:48,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:43:48,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=133, Unknown=1, NotChecked=0, Total=182 [2021-10-28 08:43:48,406 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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) [2021-10-28 08:44:32,668 WARN L207 SmtUtils]: Spent 7.43 s on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2021-10-28 08:44:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:44,411 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-10-28 08:44:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:44:44,411 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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 42 [2021-10-28 08:44:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:44:44,411 INFO L225 Difference]: With dead ends: 62 [2021-10-28 08:44:44,412 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 08:44:44,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2021-10-28 08:44:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 08:44:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-28 08:44:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 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) [2021-10-28 08:44:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-10-28 08:44:44,424 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 42 [2021-10-28 08:44:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:44:44,424 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-10-28 08:44:44,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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) [2021-10-28 08:44:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-10-28 08:44:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 08:44:44,425 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:44:44,425 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:44,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:44,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 08:44:44,646 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 08:44:44,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:44,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1161479854, now seen corresponding path program 3 times [2021-10-28 08:44:44,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:44:44,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793460170] [2021-10-28 08:44:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:44,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:44:44,664 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:44:44,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443358595] [2021-10-28 08:44:44,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 08:44:44,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:44,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:44:44,677 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:44:44,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 08:44:47,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 08:44:47,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:44:47,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-28 08:44:47,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-28 08:44:50,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:44:50,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793460170] [2021-10-28 08:44:50,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:44:50,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443358595] [2021-10-28 08:44:50,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443358595] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:44:50,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:44:50,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 08:44:50,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385382036] [2021-10-28 08:44:50,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 08:44:50,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:44:50,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 08:44:50,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:44:50,268 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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) [2021-10-28 08:46:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:46:37,774 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-28 08:46:37,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:46:37,774 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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 51 [2021-10-28 08:46:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:46:37,775 INFO L225 Difference]: With dead ends: 52 [2021-10-28 08:46:37,775 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:46:37,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-28 08:46:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:46:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:46:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-28 08:46:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:46:37,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-10-28 08:46:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:46:37,777 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:46:37,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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) [2021-10-28 08:46:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:46:37,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:46:37,779 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,780 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,780 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,780 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,781 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,781 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,781 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,781 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,781 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,781 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,782 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:46:37,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-28 08:46:37,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 08:46:37,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 08:46:37,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:38,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:46:57,173 WARN L207 SmtUtils]: Spent 10.22 s on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2021-10-28 08:47:10,261 WARN L207 SmtUtils]: Spent 10.18 s on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2021-10-28 08:47:12,411 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,411 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,412 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,412 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 08:47:12,412 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 08:47:12,412 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,412 INFO L853 garLoopResultBuilder]: At program point L54(lines 22 55) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) [2021-10-28 08:47:12,412 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,412 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,412 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,412 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (or (and (<= (div ULTIMATE.start_main_~a~0 (- 65536)) (div (+ 32767 (* ULTIMATE.start_main_~a~0 (- 1))) 65536)) (< ULTIMATE.start_main_~a~0 65536) (<= 0 ULTIMATE.start_main_~a~0)) (and (< ULTIMATE.start_main_~a~0 0) (<= 0 (+ ULTIMATE.start_main_~a~0 65536)) (< 32767 (mod ULTIMATE.start_main_~a~0 65536))))) (.cse2 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse3 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 (= ULTIMATE.start_main_~y~0 1) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~n~0 0)) (and (= ULTIMATE.start_main_~x~0 (let ((.cse4 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (* .cse4 .cse4 .cse4))) .cse0 (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse1 .cse2 .cse3))) [2021-10-28 08:47:12,413 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,413 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (or (and (<= (div ULTIMATE.start_main_~a~0 (- 65536)) (div (+ 32767 (* ULTIMATE.start_main_~a~0 (- 1))) 65536)) (< ULTIMATE.start_main_~a~0 65536) (<= 0 ULTIMATE.start_main_~a~0)) (and (< ULTIMATE.start_main_~a~0 0) (<= 0 (+ ULTIMATE.start_main_~a~0 65536)) (< 32767 (mod ULTIMATE.start_main_~a~0 65536))))) (.cse2 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse3 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse1 .cse2 .cse3) (and .cse0 (= ULTIMATE.start_main_~y~0 1) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~n~0 0)))) [2021-10-28 08:47:12,413 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,413 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~y~0 (let ((.cse5 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse5 .cse5)) (* 3 .cse5) 1)))) (.cse2 (or (and (<= (div ULTIMATE.start_main_~a~0 (- 65536)) (div (+ 32767 (* ULTIMATE.start_main_~a~0 (- 1))) 65536)) (< ULTIMATE.start_main_~a~0 65536) (<= 0 ULTIMATE.start_main_~a~0)) (and (< ULTIMATE.start_main_~a~0 0) (<= 0 (+ ULTIMATE.start_main_~a~0 65536)) (< 32767 (mod ULTIMATE.start_main_~a~0 65536))))) (.cse3 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse4 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~n~0 0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse2 .cse3 .cse4))) [2021-10-28 08:47:12,413 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,414 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~y~0 (let ((.cse5 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse5 .cse5)) (* 3 .cse5) 1)))) (.cse2 (or (and (<= (div ULTIMATE.start_main_~a~0 (- 65536)) (div (+ 32767 (* ULTIMATE.start_main_~a~0 (- 1))) 65536)) (< ULTIMATE.start_main_~a~0 65536) (<= 0 ULTIMATE.start_main_~a~0)) (and (< ULTIMATE.start_main_~a~0 0) (<= 0 (+ ULTIMATE.start_main_~a~0 65536)) (< 32767 (mod ULTIMATE.start_main_~a~0 65536))))) (.cse3 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse4 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~n~0 0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse2 .cse3 .cse4))) [2021-10-28 08:47:12,414 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,414 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 38 39) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~y~0 (let ((.cse5 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse5 .cse5)) (* 3 .cse5) 1)))) (.cse2 (or (and (<= (div ULTIMATE.start_main_~a~0 (- 65536)) (div (+ 32767 (* ULTIMATE.start_main_~a~0 (- 1))) 65536)) (< ULTIMATE.start_main_~a~0 65536) (<= 0 ULTIMATE.start_main_~a~0)) (and (< ULTIMATE.start_main_~a~0 0) (<= 0 (+ ULTIMATE.start_main_~a~0 65536)) (< 32767 (mod ULTIMATE.start_main_~a~0 65536))))) (.cse3 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse4 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~n~0 0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse2 .cse3 .cse4))) [2021-10-28 08:47:12,414 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,414 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 08:47:12,414 INFO L853 garLoopResultBuilder]: At program point L32-2(lines 32 45) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~y~0 (let ((.cse4 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse4 .cse4)) (* 3 .cse4) 1)))) (.cse1 (or (and (<= (div ULTIMATE.start_main_~a~0 (- 65536)) (div (+ 32767 (* ULTIMATE.start_main_~a~0 (- 1))) 65536)) (< ULTIMATE.start_main_~a~0 65536) (<= 0 ULTIMATE.start_main_~a~0)) (and (< ULTIMATE.start_main_~a~0 0) (<= 0 (+ ULTIMATE.start_main_~a~0 65536)) (< 32767 (mod ULTIMATE.start_main_~a~0 65536))))) (.cse2 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse3 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~n~0 0)) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse1 .cse2 .cse3))) [2021-10-28 08:47:12,414 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse1 (<= 0 ULTIMATE.start_main_~a~0)) (.cse4 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (let ((.cse0 (mod ULTIMATE.start_main_~a~0 65536))) (or (and (<= .cse0 32767) (< ULTIMATE.start_main_~a~0 65536) .cse1) (and (< ULTIMATE.start_main_~a~0 0) (<= 0 (+ ULTIMATE.start_main_~a~0 65536)) (< 32767 .cse0)))) (exists ((ULTIMATE.start_main_~n~0 Int)) (and (let ((.cse2 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= 0 ULTIMATE.start___VERIFIER_assert_~cond) (not .cse2)) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2))) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) (< ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~n~0))) (= ULTIMATE.start_main_~y~0 (let ((.cse3 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse3 .cse3)) (* 3 .cse3) 1))) .cse4 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~x~0 6)) (= ULTIMATE.start_main_~x~0 1) (< ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~z~0 12) .cse1 (= ULTIMATE.start_main_~n~0 1)) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse4 (= ULTIMATE.start_main_~n~0 0)))) [2021-10-28 08:47:12,414 INFO L857 garLoopResultBuilder]: For program point L32-3(lines 32 45) no Hoare annotation was computed. [2021-10-28 08:47:12,415 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,415 INFO L853 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse1 (<= 0 ULTIMATE.start_main_~a~0)) (.cse3 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 7) (< ULTIMATE.start_main_~a~0 1) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~n~0 1)) (and (= ULTIMATE.start_main_~x~0 0) .cse0 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse2 .cse3) (let ((.cse6 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (let ((.cse5 (* .cse6 .cse6 .cse6))) (and (let ((.cse4 (mod ULTIMATE.start_main_~a~0 65536))) (or (and (<= .cse4 32767) (< ULTIMATE.start_main_~a~0 65536) .cse1) (and (< ULTIMATE.start_main_~a~0 0) (<= 0 (+ ULTIMATE.start_main_~a~0 65536)) (< 32767 .cse4)))) (= ULTIMATE.start_main_~x~0 .cse5) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 6 (* ULTIMATE.start_main_~a~0 .cse6 .cse6 .cse6)) (* 12 .cse5)) (* .cse6 .cse6 .cse6 ULTIMATE.start_main_~z~0)) (= ULTIMATE.start_main_~y~0 (+ (* 3 (* .cse6 .cse6)) (* 3 .cse6) 1)) .cse3))))) [2021-10-28 08:47:12,415 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,415 INFO L857 garLoopResultBuilder]: For program point L15-21(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,415 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,415 INFO L853 garLoopResultBuilder]: At program point L15-23(lines 14 20) the Hoare annotation is: (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (and (= ULTIMATE.start_main_~x~0 (* .cse0 .cse0 .cse0)) (= ULTIMATE.start_main_~y~0 (+ (* 3 (* .cse0 .cse0)) (* 3 .cse0) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) [2021-10-28 08:47:12,415 INFO L857 garLoopResultBuilder]: For program point L15-24(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,416 INFO L853 garLoopResultBuilder]: At program point L15-26(lines 14 20) the Hoare annotation is: (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (and (= ULTIMATE.start_main_~x~0 (* .cse0 .cse0 .cse0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 (* .cse0 .cse0)) (* 3 .cse0) 1)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) [2021-10-28 08:47:12,416 INFO L857 garLoopResultBuilder]: For program point L15-27(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,416 INFO L853 garLoopResultBuilder]: At program point L15-29(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= ULTIMATE.start_main_~x~0 0) .cse0 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse1) (and .cse0 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~x~0 6)) (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 12) (= ULTIMATE.start_main_~n~0 1)) (and (= ULTIMATE.start_main_~x~0 (let ((.cse2 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (* .cse2 .cse2 .cse2))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) .cse1))) [2021-10-28 08:47:12,416 INFO L857 garLoopResultBuilder]: For program point L15-30(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:47:12,416 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,416 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,416 INFO L853 garLoopResultBuilder]: At program point L15-32(lines 14 20) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) [2021-10-28 08:47:12,416 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,417 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,417 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,417 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,417 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,417 INFO L857 garLoopResultBuilder]: For program point L16-7(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,417 INFO L857 garLoopResultBuilder]: For program point L16-8(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,417 INFO L857 garLoopResultBuilder]: For program point L16-9(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,417 INFO L857 garLoopResultBuilder]: For program point L16-10(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:47:12,417 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 08:47:12,418 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,418 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,418 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:47:12,420 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:47:12,421 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:47:12,428 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,429 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,429 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,429 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,430 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,430 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,430 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,438 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,438 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,438 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,438 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,439 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,439 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,439 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:47:12 BoogieIcfgContainer [2021-10-28 08:47:12,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:47:12,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:47:12,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:47:12,465 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:47:12,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:21" (3/4) ... [2021-10-28 08:47:12,468 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:47:12,479 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-10-28 08:47:12,480 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 08:47:12,480 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:47:12,480 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:47:12,503 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((a % 65536 <= 32767 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536)) && (\exists ULTIMATE.start_main_~n~0 : int :: ((((0 == cond && !(z == 6 * ULTIMATE.start_main_~n~0 + 6)) || (1 == cond && z == 6 * ULTIMATE.start_main_~n~0 + 6)) && ULTIMATE.start_main_~n~0 <= a + 1) && x == ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0) && a < ULTIMATE.start_main_~n~0)) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && z == 6 * n + 6) && x == n * n * n) || ((((((1 <= cond && y == x + 6) && x == 1) && a < 1) && z == 12) && 0 <= a) && n == 1)) || ((((x == 0 && y == 1) && !(0 == cond)) && z == 6 * n + 6) && n == 0) [2021-10-28 08:47:12,543 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:47:12,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:47:12,544 INFO L168 Benchmark]: Toolchain (without parser) took 292245.80 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 83.2 MB in the beginning and 119.1 MB in the end (delta: -35.9 MB). Peak memory consumption was 99.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:12,544 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 113.2 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:47:12,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.14 ms. Allocated memory is still 113.2 MB. Free memory was 82.9 MB in the beginning and 86.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:12,545 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.68 ms. Allocated memory is still 113.2 MB. Free memory was 86.7 MB in the beginning and 85.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:47:12,545 INFO L168 Benchmark]: Boogie Preprocessor took 51.20 ms. Allocated memory is still 113.2 MB. Free memory was 85.1 MB in the beginning and 83.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:12,546 INFO L168 Benchmark]: RCFGBuilder took 489.94 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 72.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:12,546 INFO L168 Benchmark]: TraceAbstraction took 291210.93 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 72.0 MB in the beginning and 37.5 MB in the end (delta: 34.5 MB). Peak memory consumption was 89.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:12,547 INFO L168 Benchmark]: Witness Printer took 78.40 ms. Allocated memory is still 163.6 MB. Free memory was 37.5 MB in the beginning and 119.1 MB in the end (delta: -81.6 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:12,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 113.2 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.14 ms. Allocated memory is still 113.2 MB. Free memory was 82.9 MB in the beginning and 86.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.68 ms. Allocated memory is still 113.2 MB. Free memory was 86.7 MB in the beginning and 85.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.20 ms. Allocated memory is still 113.2 MB. Free memory was 85.1 MB in the beginning and 83.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 489.94 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 72.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 291210.93 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 72.0 MB in the beginning and 37.5 MB in the end (delta: 34.5 MB). Peak memory consumption was 89.5 MB. Max. memory is 16.1 GB. * Witness Printer took 78.40 ms. Allocated memory is still 163.6 MB. Free memory was 37.5 MB in the beginning and 119.1 MB in the end (delta: -81.6 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 291.0s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 214.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 34.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 372 SDtfs, 502 SDslu, 850 SDs, 0 SdLazy, 1588 SolverSat, 255 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 186.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 417 GetRequests, 297 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 43.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=9, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 203 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 55 NumberOfFragments, 1564 HoareAnnotationTreeSize, 13 FomulaSimplifications, 13985 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 13 FomulaSimplificationsInter, 3654 FormulaSimplificationTreeSizeReductionInter, 34.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 31.6s InterpolantComputationTime, 378 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 363 ConstructedInterpolants, 1 QuantifiedInterpolants, 6626 SizeOfPredicates, 88 NumberOfNonLiveVariables, 1335 ConjunctsInSsa, 263 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 118/241 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant [2021-10-28 08:47:12,558 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,558 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,561 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,561 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,561 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,561 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,561 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-10-28 08:47:12,562 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] Derived loop invariant: ((((((((a % 65536 <= 32767 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536)) && (\exists ULTIMATE.start_main_~n~0 : int :: ((((0 == cond && !(z == 6 * ULTIMATE.start_main_~n~0 + 6)) || (1 == cond && z == 6 * ULTIMATE.start_main_~n~0 + 6)) && ULTIMATE.start_main_~n~0 <= a + 1) && x == ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0) && a < ULTIMATE.start_main_~n~0)) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && z == 6 * n + 6) && x == n * n * n) || ((((((1 <= cond && y == x + 6) && x == 1) && a < 1) && z == 12) && 0 <= a) && n == 1)) || ((((x == 0 && y == 1) && !(0 == cond)) && z == 6 * n + 6) && n == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((1 == cond && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) && n == 0) || (((((1 == cond && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && n <= a + 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((1 == cond && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) && n == 0) || (((((1 == cond && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && n <= a + 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(0 == cond) && z == 6 * n + 6 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !(0 == cond) && z == 6 * n + 6 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((1 == cond && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) || (((((1 == cond && y == 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) && n == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((1 == cond && y == 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) && n == 0) || ((((((x == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || ((((1 <= cond && y == x + 6) && x == 1) && z == 12) && n == 1)) || (((x == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && z == 6 * n + 6) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((1 <= cond && x == 1) && y == 7) && a < 1) && 0 <= a) && !(0 == cond)) && z == 6 * n + 6) && n == 1) || (((((x == 0 && 1 <= cond) && y == 1) && z == 6) && !(0 == cond)) && z == 6 * n + 6)) || ((((((((a % 65536 <= 32767 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536)) && x == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) && 1 == cond) && 6 * (a * ((6 + z * -1) / -6) * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) + 12 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6) * z) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && z == 6 * n + 6) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1 && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) && n == 0) || (((((1 == cond && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && n <= a + 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((1 == cond && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) && n == 0) || (((((1 == cond && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && n <= a + 1) && (((a / -65536 <= (32767 + a * -1) / 65536 && a < 65536) && 0 <= a) || ((a < 0 && 0 <= a + 65536) && 32767 < a % 65536))) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((x == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6) && 1 <= cond) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && z == 6 * n + 6 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((x == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && !(0 == cond)) && z == 6 * n + 6 RESULT: Ultimate proved your program to be correct! [2021-10-28 08:47:12,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39ae483-e472-4ab6-b745-a860562d3483/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...