./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:57:47,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:57:47,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:57:47,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:57:47,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:57:47,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:57:47,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:57:47,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:57:47,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:57:47,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:57:47,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:57:47,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:57:47,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:57:47,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:57:47,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:57:47,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:57:47,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:57:47,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:57:47,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:57:47,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:57:47,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:57:47,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:57:47,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:57:47,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:57:47,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:57:47,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:57:47,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:57:47,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:57:47,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:57:47,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:57:47,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:57:47,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:57:47,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:57:47,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:57:47,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:57:47,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:57:47,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:57:47,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:57:47,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:57:47,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:57:47,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:57:47,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:57:47,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:57:47,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:57:47,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:57:47,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:57:47,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:57:47,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:57:47,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:57:47,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:57:47,872 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:57:47,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:57:47,873 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:57:47,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:57:47,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:57:47,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:57:47,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:57:47,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:57:47,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:57:47,874 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:57:47,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:57:47,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:57:47,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:57:47,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:57:47,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:57:47,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:57:47,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:57:47,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:57:47,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:57:47,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:57:47,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:57:47,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:57:47,876 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:57:47,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:57:47,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:57:47,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:57:47,876 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_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca [2021-12-06 18:57:48,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:57:48,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:57:48,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:57:48,082 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:57:48,082 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:57:48,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-12-06 18:57:48,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/data/fff9289bc/06074169c0a74f7ca8fbce0b0da30b10/FLAGace05430d [2021-12-06 18:57:48,480 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:57:48,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-12-06 18:57:48,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/data/fff9289bc/06074169c0a74f7ca8fbce0b0da30b10/FLAGace05430d [2021-12-06 18:57:48,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/data/fff9289bc/06074169c0a74f7ca8fbce0b0da30b10 [2021-12-06 18:57:48,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:57:48,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:57:48,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:57:48,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:57:48,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:57:48,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201421a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48, skipping insertion in model container [2021-12-06 18:57:48,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:57:48,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:57:48,630 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2021-12-06 18:57:48,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:57:48,663 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:57:48,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2021-12-06 18:57:48,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:57:48,696 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:57:48,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48 WrapperNode [2021-12-06 18:57:48,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:57:48,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:57:48,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:57:48,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:57:48,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,728 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2021-12-06 18:57:48,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:57:48,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:57:48,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:57:48,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:57:48,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:57:48,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:57:48,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:57:48,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:57:48,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (1/1) ... [2021-12-06 18:57:48,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:57:48,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:48,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:57:48,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:57:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:57:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:57:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:57:48,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:57:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 18:57:48,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 18:57:48,861 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:57:48,862 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:57:48,966 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:57:48,971 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:57:48,971 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:57:48,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:57:48 BoogieIcfgContainer [2021-12-06 18:57:48,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:57:48,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:57:48,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:57:48,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:57:48,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:57:48" (1/3) ... [2021-12-06 18:57:48,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395b9e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:57:48, skipping insertion in model container [2021-12-06 18:57:48,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:48" (2/3) ... [2021-12-06 18:57:48,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395b9e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:57:48, skipping insertion in model container [2021-12-06 18:57:48,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:57:48" (3/3) ... [2021-12-06 18:57:48,979 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2021-12-06 18:57:48,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:57:48,983 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:57:49,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:57:49,023 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:57:49,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:57:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 18:57:49,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 18:57:49,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:49,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:49,042 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash -797370321, now seen corresponding path program 1 times [2021-12-06 18:57:49,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:49,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954577351] [2021-12-06 18:57:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:49,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:49,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:49,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954577351] [2021-12-06 18:57:49,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954577351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:49,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:49,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:57:49,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347521902] [2021-12-06 18:57:49,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:49,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:57:49,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:49,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:57:49,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:57:49,198 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:49,218 INFO L93 Difference]: Finished difference Result 57 states and 97 transitions. [2021-12-06 18:57:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:57:49,220 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 18:57:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:49,226 INFO L225 Difference]: With dead ends: 57 [2021-12-06 18:57:49,226 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 18:57:49,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:57:49,233 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:49,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:49,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 18:57:49,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-06 18:57:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:57:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions. [2021-12-06 18:57:49,272 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 38 transitions. Word has length 10 [2021-12-06 18:57:49,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:49,272 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 38 transitions. [2021-12-06 18:57:49,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2021-12-06 18:57:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:57:49,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:49,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:49,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:57:49,274 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:49,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1698606518, now seen corresponding path program 1 times [2021-12-06 18:57:49,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:49,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888617419] [2021-12-06 18:57:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:49,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:49,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:49,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888617419] [2021-12-06 18:57:49,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888617419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:49,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:49,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:49,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219441689] [2021-12-06 18:57:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:49,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:57:49,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:49,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:57:49,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:57:49,339 INFO L87 Difference]: Start difference. First operand 26 states and 38 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:49,362 INFO L93 Difference]: Finished difference Result 47 states and 70 transitions. [2021-12-06 18:57:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:57:49,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 18:57:49,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:49,364 INFO L225 Difference]: With dead ends: 47 [2021-12-06 18:57:49,364 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 18:57:49,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:57:49,366 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:49,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:49,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 18:57:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-06 18:57:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:57:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2021-12-06 18:57:49,374 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 12 [2021-12-06 18:57:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:49,374 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-12-06 18:57:49,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2021-12-06 18:57:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 18:57:49,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:49,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:49,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:57:49,375 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:49,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash 776097594, now seen corresponding path program 1 times [2021-12-06 18:57:49,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:49,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527617111] [2021-12-06 18:57:49,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:49,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:49,388 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:57:49,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753809141] [2021-12-06 18:57:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:49,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:49,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:49,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:49,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:57:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:49,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:57:49,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:49,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:57:49,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:49,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527617111] [2021-12-06 18:57:49,513 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:57:49,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753809141] [2021-12-06 18:57:49,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753809141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:49,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:49,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:57:49,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903768211] [2021-12-06 18:57:49,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:49,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:57:49,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:49,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:57:49,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:49,515 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:49,536 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2021-12-06 18:57:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:57:49,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 18:57:49,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:49,538 INFO L225 Difference]: With dead ends: 41 [2021-12-06 18:57:49,538 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 18:57:49,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:49,539 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:49,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 130 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 18:57:49,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-12-06 18:57:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:57:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2021-12-06 18:57:49,546 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 13 [2021-12-06 18:57:49,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:49,546 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-12-06 18:57:49,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,546 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2021-12-06 18:57:49,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 18:57:49,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:49,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:49,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:57:49,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:49,749 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:49,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:49,751 INFO L85 PathProgramCache]: Analyzing trace with hash 777587144, now seen corresponding path program 1 times [2021-12-06 18:57:49,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:49,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941058192] [2021-12-06 18:57:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:49,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:50,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:50,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941058192] [2021-12-06 18:57:50,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941058192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:50,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:50,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:57:50,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139305908] [2021-12-06 18:57:50,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:50,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:57:50,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:57:50,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:57:50,035 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:50,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:50,318 INFO L93 Difference]: Finished difference Result 64 states and 96 transitions. [2021-12-06 18:57:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:57:50,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 18:57:50,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:50,321 INFO L225 Difference]: With dead ends: 64 [2021-12-06 18:57:50,321 INFO L226 Difference]: Without dead ends: 45 [2021-12-06 18:57:50,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:57:50,322 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:50,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 181 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:57:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-06 18:57:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-12-06 18:57:50,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-06 18:57:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2021-12-06 18:57:50,333 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 13 [2021-12-06 18:57:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:50,333 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2021-12-06 18:57:50,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2021-12-06 18:57:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 18:57:50,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:50,334 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:50,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:57:50,334 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:50,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:50,334 INFO L85 PathProgramCache]: Analyzing trace with hash 84493759, now seen corresponding path program 1 times [2021-12-06 18:57:50,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:50,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916140209] [2021-12-06 18:57:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:50,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:50,343 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:57:50,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68234738] [2021-12-06 18:57:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:50,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:50,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:50,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:50,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:57:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:50,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:57:50,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:50,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:50,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:50,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916140209] [2021-12-06 18:57:50,421 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:57:50,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68234738] [2021-12-06 18:57:50,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68234738] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:50,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:57:50,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-12-06 18:57:50,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268193708] [2021-12-06 18:57:50,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:50,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:57:50,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:50,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:57:50,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:50,422 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:50,439 INFO L93 Difference]: Finished difference Result 63 states and 92 transitions. [2021-12-06 18:57:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:57:50,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 18:57:50,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:50,440 INFO L225 Difference]: With dead ends: 63 [2021-12-06 18:57:50,440 INFO L226 Difference]: Without dead ends: 44 [2021-12-06 18:57:50,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:57:50,442 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:50,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 101 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-06 18:57:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-12-06 18:57:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-06 18:57:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions. [2021-12-06 18:57:50,457 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 15 [2021-12-06 18:57:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:50,457 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 62 transitions. [2021-12-06 18:57:50,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions. [2021-12-06 18:57:50,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:57:50,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:50,459 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:50,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:57:50,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:50,660 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:50,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2016757679, now seen corresponding path program 1 times [2021-12-06 18:57:50,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:50,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211480019] [2021-12-06 18:57:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:50,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:50,696 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:57:50,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882824343] [2021-12-06 18:57:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:50,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:50,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:50,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:50,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:57:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:50,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:57:50,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 18:57:50,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:57:50,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:50,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211480019] [2021-12-06 18:57:50,799 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:57:50,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882824343] [2021-12-06 18:57:50,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882824343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:50,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:50,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:57:50,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839542676] [2021-12-06 18:57:50,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:50,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:57:50,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:50,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:57:50,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:50,800 INFO L87 Difference]: Start difference. First operand 44 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:51,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:51,065 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2021-12-06 18:57:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:57:51,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 18:57:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:51,067 INFO L225 Difference]: With dead ends: 62 [2021-12-06 18:57:51,067 INFO L226 Difference]: Without dead ends: 59 [2021-12-06 18:57:51,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:57:51,068 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:51,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 143 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:57:51,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-06 18:57:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-12-06 18:57:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-06 18:57:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 85 transitions. [2021-12-06 18:57:51,077 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 85 transitions. Word has length 16 [2021-12-06 18:57:51,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:51,077 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 85 transitions. [2021-12-06 18:57:51,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 85 transitions. [2021-12-06 18:57:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:57:51,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:51,078 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:51,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 18:57:51,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:51,279 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:51,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:51,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2015268129, now seen corresponding path program 1 times [2021-12-06 18:57:51,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:51,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939545686] [2021-12-06 18:57:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:51,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:51,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:51,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939545686] [2021-12-06 18:57:51,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939545686] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:51,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064341860] [2021-12-06 18:57:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:51,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:51,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:51,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:51,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:57:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:51,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:57:51,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:51,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:57:51,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064341860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:51,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:57:51,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-12-06 18:57:51,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016132448] [2021-12-06 18:57:51,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:51,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:57:51,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:57:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:57:51,381 INFO L87 Difference]: Start difference. First operand 59 states and 85 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:51,431 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2021-12-06 18:57:51,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:57:51,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 18:57:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:51,432 INFO L225 Difference]: With dead ends: 71 [2021-12-06 18:57:51,432 INFO L226 Difference]: Without dead ends: 39 [2021-12-06 18:57:51,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:57:51,434 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:51,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 70 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:51,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-06 18:57:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-06 18:57:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 18:57:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-12-06 18:57:51,442 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 16 [2021-12-06 18:57:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:51,442 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-12-06 18:57:51,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-12-06 18:57:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 18:57:51,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:51,443 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:51,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:57:51,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 18:57:51,645 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:51,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:51,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1484248551, now seen corresponding path program 1 times [2021-12-06 18:57:51,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:51,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957549129] [2021-12-06 18:57:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:51,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:51,678 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:57:51,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721150254] [2021-12-06 18:57:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:51,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:51,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:51,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:51,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:57:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:51,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:57:51,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:51,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:57:51,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:51,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957549129] [2021-12-06 18:57:51,755 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:57:51,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721150254] [2021-12-06 18:57:51,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721150254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:51,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:51,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:57:51,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634785714] [2021-12-06 18:57:51,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:51,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:57:51,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:51,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:57:51,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:51,757 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:57:51,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:51,812 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-12-06 18:57:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:57:51,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-06 18:57:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:51,813 INFO L225 Difference]: With dead ends: 43 [2021-12-06 18:57:51,813 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 18:57:51,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:57:51,814 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:51,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 79 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 18:57:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 18:57:51,815 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) [2021-12-06 18:57:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 18:57:51,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-12-06 18:57:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:51,816 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:57:51,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:57:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 18:57:51,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 18:57:51,818 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 18:57:51,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:57:52,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:52,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 18:57:52,217 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-12-06 18:57:52,217 INFO L861 garLoopResultBuilder]: At program point L60(lines 20 61) the Hoare annotation is: true [2021-12-06 18:57:52,217 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-12-06 18:57:52,217 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 20 61) no Hoare annotation was computed. [2021-12-06 18:57:52,218 INFO L858 garLoopResultBuilder]: For program point L44(lines 38 56) no Hoare annotation was computed. [2021-12-06 18:57:52,218 INFO L854 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (and (<= 2 ~counter~0) (<= (+ (* 4294967296 (div (+ (* |ULTIMATE.start_main_~p~0#1| 2) |ULTIMATE.start_main_~q~0#1|) 4294967296)) (* 4294967296 (div |ULTIMATE.start_main_~q~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1| 1) (+ |ULTIMATE.start_main_~q~0#1| (* 4294967296 (div |ULTIMATE.start_main_~r~0#1| 4294967296)))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) [2021-12-06 18:57:52,218 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 18:57:52,218 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 18:57:52,218 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 18:57:52,218 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) [2021-12-06 18:57:52,218 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (<= 2 ~counter~0) (<= (+ (* 4294967296 (div (+ (* |ULTIMATE.start_main_~p~0#1| 2) |ULTIMATE.start_main_~q~0#1|) 4294967296)) (* 4294967296 (div |ULTIMATE.start_main_~q~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1| 1) (+ |ULTIMATE.start_main_~q~0#1| (* 4294967296 (div |ULTIMATE.start_main_~r~0#1| 4294967296)))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) [2021-12-06 18:57:52,219 INFO L858 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-12-06 18:57:52,219 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 18:57:52,219 INFO L854 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0)) [2021-12-06 18:57:52,219 INFO L854 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (and (<= 2 ~counter~0) (<= (+ (* 4294967296 (div (+ (* |ULTIMATE.start_main_~p~0#1| 2) |ULTIMATE.start_main_~q~0#1|) 4294967296)) (* 4294967296 (div |ULTIMATE.start_main_~q~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1| 1) (+ |ULTIMATE.start_main_~q~0#1| (* 4294967296 (div |ULTIMATE.start_main_~r~0#1| 4294967296)))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) [2021-12-06 18:57:52,219 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-12-06 18:57:52,219 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 56) no Hoare annotation was computed. [2021-12-06 18:57:52,219 INFO L854 garLoopResultBuilder]: At program point L38-2(lines 38 56) the Hoare annotation is: (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) [2021-12-06 18:57:52,219 INFO L858 garLoopResultBuilder]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2021-12-06 18:57:52,220 INFO L854 garLoopResultBuilder]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) (= ~counter~0 0) .cse2) (and .cse0 .cse1 (<= 1 ~counter~0) .cse2))) [2021-12-06 18:57:52,220 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-12-06 18:57:52,220 INFO L854 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (and (<= 2 ~counter~0) (<= (+ (* 4294967296 (div (+ (* |ULTIMATE.start_main_~p~0#1| 2) |ULTIMATE.start_main_~q~0#1|) 4294967296)) (* 4294967296 (div |ULTIMATE.start_main_~q~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1| 1) (+ |ULTIMATE.start_main_~q~0#1| (* 4294967296 (div |ULTIMATE.start_main_~r~0#1| 4294967296)))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) [2021-12-06 18:57:52,220 INFO L854 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= 2 ~counter~0) (<= (+ (* 4294967296 (div (+ (* |ULTIMATE.start_main_~p~0#1| 2) |ULTIMATE.start_main_~q~0#1|) 4294967296)) (* 4294967296 (div |ULTIMATE.start_main_~q~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1| 1) (+ |ULTIMATE.start_main_~q~0#1| (* 4294967296 (div |ULTIMATE.start_main_~r~0#1| 4294967296)))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) [2021-12-06 18:57:52,220 INFO L854 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (and (<= 2 ~counter~0) (<= (+ (* 4294967296 (div (+ (* |ULTIMATE.start_main_~p~0#1| 2) |ULTIMATE.start_main_~q~0#1|) 4294967296)) (* 4294967296 (div |ULTIMATE.start_main_~q~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1| 1) (+ |ULTIMATE.start_main_~q~0#1| (* 4294967296 (div |ULTIMATE.start_main_~r~0#1| 4294967296)))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) [2021-12-06 18:57:52,220 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-12-06 18:57:52,220 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-12-06 18:57:52,221 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-12-06 18:57:52,221 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-12-06 18:57:52,221 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-12-06 18:57:52,221 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-12-06 18:57:52,223 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:52,224 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:57:52,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:57:52 BoogieIcfgContainer [2021-12-06 18:57:52,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:57:52,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:57:52,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:57:52,235 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:57:52,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:57:48" (3/4) ... [2021-12-06 18:57:52,237 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 18:57:52,242 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-06 18:57:52,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-06 18:57:52,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 18:57:52,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 18:57:52,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 18:57:52,271 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:57:52,271 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:57:52,272 INFO L158 Benchmark]: Toolchain (without parser) took 3774.70ms. Allocated memory was 81.8MB in the beginning and 151.0MB in the end (delta: 69.2MB). Free memory was 44.4MB in the beginning and 119.4MB in the end (delta: -75.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:57:52,272 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 81.8MB. Free memory is still 60.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:57:52,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.79ms. Allocated memory was 81.8MB in the beginning and 125.8MB in the end (delta: 44.0MB). Free memory was 44.2MB in the beginning and 101.6MB in the end (delta: -57.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-12-06 18:57:52,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.93ms. Allocated memory is still 125.8MB. Free memory was 101.6MB in the beginning and 99.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:57:52,273 INFO L158 Benchmark]: Boogie Preprocessor took 21.60ms. Allocated memory is still 125.8MB. Free memory was 99.9MB in the beginning and 98.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:57:52,273 INFO L158 Benchmark]: RCFGBuilder took 221.59ms. Allocated memory is still 125.8MB. Free memory was 98.8MB in the beginning and 87.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:57:52,273 INFO L158 Benchmark]: TraceAbstraction took 3260.35ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 87.3MB in the beginning and 122.5MB in the end (delta: -35.2MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2021-12-06 18:57:52,274 INFO L158 Benchmark]: Witness Printer took 36.45ms. Allocated memory is still 151.0MB. Free memory was 122.5MB in the beginning and 119.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:57:52,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 81.8MB. Free memory is still 60.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.79ms. Allocated memory was 81.8MB in the beginning and 125.8MB in the end (delta: 44.0MB). Free memory was 44.2MB in the beginning and 101.6MB in the end (delta: -57.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.93ms. Allocated memory is still 125.8MB. Free memory was 101.6MB in the beginning and 99.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.60ms. Allocated memory is still 125.8MB. Free memory was 99.9MB in the beginning and 98.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 221.59ms. Allocated memory is still 125.8MB. Free memory was 98.8MB in the beginning and 87.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3260.35ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 87.3MB in the beginning and 122.5MB in the end (delta: -35.2MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * Witness Printer took 36.45ms. Allocated memory is still 151.0MB. Free memory was 122.5MB in the beginning and 119.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 14]: 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 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 847 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 553 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 161 IncrementalHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 294 mSDtfsCounter, 161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=6, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 76 PreInvPairs, 89 NumberOfFragments, 311 HoareAnnotationTreeSize, 76 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 153 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 SizeOfPredicates, 6 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 9/15 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 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((p == 0 && h == 0) && q == 1) && counter == 0) && n == r) || (((p == 0 && h == 0) && 1 <= counter) && n == r) RESULT: Ultimate proved your program to be correct! [2021-12-06 18:57:52,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad6e3b14-169b-4e6c-bfdd-930ddf9fa3d6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE