./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.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_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/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_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/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_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/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 d3c61dee0c4c48de96844df391dc470a843cae078bb175116ed4a6b789669168 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:40:59,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:40:59,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:40:59,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:40:59,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:40:59,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:40:59,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:40:59,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:40:59,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:40:59,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:40:59,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:40:59,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:40:59,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:40:59,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:40:59,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:40:59,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:40:59,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:40:59,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:40:59,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:40:59,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:40:59,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:40:59,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:40:59,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:40:59,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:40:59,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:40:59,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:40:59,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:40:59,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:40:59,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:40:59,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:40:59,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:40:59,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:40:59,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:40:59,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:40:59,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:40:59,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:40:59,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:40:59,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:40:59,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:40:59,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:40:59,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:40:59,838 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:40:59,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:40:59,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:40:59,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:40:59,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:40:59,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:40:59,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:40:59,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:40:59,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:40:59,856 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:40:59,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:40:59,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:40:59,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:40:59,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:40:59,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:40:59,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:40:59,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:40:59,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:40:59,857 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:40:59,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:40:59,857 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:40:59,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:40:59,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:40:59,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:40:59,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:40:59,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:40:59,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:40:59,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:40:59,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:40:59,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:40:59,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:40:59,859 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:40:59,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:40:59,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:40:59,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:40:59,859 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_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3c61dee0c4c48de96844df391dc470a843cae078bb175116ed4a6b789669168 [2021-12-06 21:41:00,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:41:00,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:41:00,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:41:00,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:41:00,052 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:41:00,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2021-12-06 21:41:00,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/data/12ca27465/a55000b11fe4425080fdcd309bb020f5/FLAGea7355561 [2021-12-06 21:41:00,479 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:41:00,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2021-12-06 21:41:00,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/data/12ca27465/a55000b11fe4425080fdcd309bb020f5/FLAGea7355561 [2021-12-06 21:41:00,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/data/12ca27465/a55000b11fe4425080fdcd309bb020f5 [2021-12-06 21:41:00,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:41:00,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:41:00,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:41:00,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:41:00,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:41:00,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cedfe63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00, skipping insertion in model container [2021-12-06 21:41:00,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:41:00,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:41:00,634 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_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c[588,601] [2021-12-06 21:41:00,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:41:00,658 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:41:00,670 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_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c[588,601] [2021-12-06 21:41:00,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:41:00,692 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:41:00,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00 WrapperNode [2021-12-06 21:41:00,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:41:00,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:41:00,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:41:00,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:41:00,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,720 INFO L137 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2021-12-06 21:41:00,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:41:00,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:41:00,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:41:00,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:41:00,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:41:00,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:41:00,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:41:00,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:41:00,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (1/1) ... [2021-12-06 21:41:00,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:41:00,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:00,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:41:00,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:41:00,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:41:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:41:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:41:00,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:41:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 21:41:00,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 21:41:00,842 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:41:00,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:41:00,921 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:41:00,926 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:41:00,926 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 21:41:00,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:41:00 BoogieIcfgContainer [2021-12-06 21:41:00,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:41:00,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:41:00,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:41:00,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:41:00,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:41:00" (1/3) ... [2021-12-06 21:41:00,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca90779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:41:00, skipping insertion in model container [2021-12-06 21:41:00,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:41:00" (2/3) ... [2021-12-06 21:41:00,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca90779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:41:00, skipping insertion in model container [2021-12-06 21:41:00,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:41:00" (3/3) ... [2021-12-06 21:41:00,933 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound20.c [2021-12-06 21:41:00,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:41:00,937 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:41:00,973 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:41:00,979 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 21:41:00,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:41:00,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 21:41:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 21:41:00,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:00,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:00,996 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:01,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:01,001 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2021-12-06 21:41:01,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:01,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261569466] [2021-12-06 21:41:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:01,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:41:01,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:01,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261569466] [2021-12-06 21:41:01,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261569466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:01,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:01,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:41:01,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375761273] [2021-12-06 21:41:01,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:01,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 21:41:01,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:01,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 21:41:01,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 21:41:01,144 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:41:01,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:01,161 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2021-12-06 21:41:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 21:41:01,162 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2021-12-06 21:41:01,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:01,168 INFO L225 Difference]: With dead ends: 51 [2021-12-06 21:41:01,168 INFO L226 Difference]: Without dead ends: 23 [2021-12-06 21:41:01,171 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 21:41:01,173 INFO L933 BasicCegarLoop]: 37 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, 37 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 21:41:01,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:41:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-06 21:41:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-06 21:41:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 21:41:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2021-12-06 21:41:01,204 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2021-12-06 21:41:01,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:01,204 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2021-12-06 21:41:01,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:41:01,205 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2021-12-06 21:41:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 21:41:01,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:01,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:01,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:41:01,206 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2021-12-06 21:41:01,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:01,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931441148] [2021-12-06 21:41:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:01,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:41:01,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:01,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931441148] [2021-12-06 21:41:01,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931441148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:01,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:01,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:41:01,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857494236] [2021-12-06 21:41:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:01,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:41:01,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:01,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:41:01,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:41:01,300 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:41:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:01,358 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-12-06 21:41:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:41:01,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2021-12-06 21:41:01,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:01,360 INFO L225 Difference]: With dead ends: 29 [2021-12-06 21:41:01,360 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 21:41:01,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 21:41:01,362 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:01,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 85 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:41:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 21:41:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-06 21:41:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 21:41:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-12-06 21:41:01,374 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2021-12-06 21:41:01,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:01,375 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-12-06 21:41:01,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:41:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-12-06 21:41:01,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 21:41:01,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:01,376 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:01,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:41:01,376 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:01,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:01,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2021-12-06 21:41:01,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:01,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608389399] [2021-12-06 21:41:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:01,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:01,394 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:01,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422557472] [2021-12-06 21:41:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:01,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:01,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:01,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:41:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:01,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 21:41:01,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:01,503 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 21:41:01,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:41:01,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:01,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608389399] [2021-12-06 21:41:01,503 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:01,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422557472] [2021-12-06 21:41:01,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422557472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:01,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:01,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:41:01,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431392706] [2021-12-06 21:41:01,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:01,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:41:01,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:01,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:41:01,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:41:01,505 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 21:41:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:01,551 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2021-12-06 21:41:01,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:41:01,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 14 [2021-12-06 21:41:01,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:01,552 INFO L225 Difference]: With dead ends: 46 [2021-12-06 21:41:01,553 INFO L226 Difference]: Without dead ends: 44 [2021-12-06 21:41:01,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 21:41:01,554 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:01,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 136 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:41:01,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-06 21:41:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2021-12-06 21:41:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-06 21:41:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-12-06 21:41:01,563 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2021-12-06 21:41:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:01,564 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-12-06 21:41:01,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 21:41:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-12-06 21:41:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 21:41:01,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:01,565 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:01,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:41:01,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:01,767 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:01,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2021-12-06 21:41:01,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:01,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168541211] [2021-12-06 21:41:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:01,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:01,807 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:01,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387117375] [2021-12-06 21:41:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:01,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:01,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:01,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:01,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:41:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:01,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 21:41:01,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 21:41:01,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:41:01,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:01,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168541211] [2021-12-06 21:41:01,997 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:01,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387117375] [2021-12-06 21:41:01,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387117375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:01,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:01,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:41:01,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311557617] [2021-12-06 21:41:01,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:01,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:41:01,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:41:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:41:01,998 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 21:41:02,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:02,042 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2021-12-06 21:41:02,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:41:02,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-12-06 21:41:02,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:02,043 INFO L225 Difference]: With dead ends: 50 [2021-12-06 21:41:02,044 INFO L226 Difference]: Without dead ends: 48 [2021-12-06 21:41:02,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 21:41:02,045 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:02,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 133 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:41:02,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-06 21:41:02,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-12-06 21:41:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 21:41:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2021-12-06 21:41:02,058 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 19 [2021-12-06 21:41:02,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:02,058 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2021-12-06 21:41:02,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 21:41:02,059 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2021-12-06 21:41:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 21:41:02,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:02,059 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:02,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 21:41:02,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:02,261 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:02,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2021-12-06 21:41:02,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:02,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774816942] [2021-12-06 21:41:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:02,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:02,308 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:02,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292477451] [2021-12-06 21:41:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:02,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:02,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:02,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:02,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 21:41:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:02,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:41:02,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 21:41:02,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:41:02,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:02,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774816942] [2021-12-06 21:41:02,531 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:02,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292477451] [2021-12-06 21:41:02,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292477451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:02,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:02,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:41:02,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186403182] [2021-12-06 21:41:02,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:02,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:41:02,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:02,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:41:02,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:41:02,533 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 21:41:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:02,581 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2021-12-06 21:41:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:41:02,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2021-12-06 21:41:02,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:02,582 INFO L225 Difference]: With dead ends: 58 [2021-12-06 21:41:02,582 INFO L226 Difference]: Without dead ends: 46 [2021-12-06 21:41:02,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 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 21:41:02,583 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:02,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 125 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:41:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-06 21:41:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-12-06 21:41:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 21:41:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2021-12-06 21:41:02,590 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2021-12-06 21:41:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:02,590 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2021-12-06 21:41:02,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 21:41:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2021-12-06 21:41:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 21:41:02,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:02,592 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:02,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 21:41:02,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:02,793 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash -492592860, now seen corresponding path program 1 times [2021-12-06 21:41:02,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:02,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976498872] [2021-12-06 21:41:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:02,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:02,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:02,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228615041] [2021-12-06 21:41:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:02,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:02,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:02,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:02,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 21:41:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:02,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 21:41:02,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 21:41:03,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:41:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 21:41:03,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:03,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976498872] [2021-12-06 21:41:03,135 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:03,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228615041] [2021-12-06 21:41:03,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228615041] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:41:03,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:41:03,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-12-06 21:41:03,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093538732] [2021-12-06 21:41:03,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:41:03,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:41:03,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:03,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:41:03,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:41:03,137 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 21:41:03,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:03,568 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2021-12-06 21:41:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:41:03,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 41 [2021-12-06 21:41:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:03,570 INFO L225 Difference]: With dead ends: 69 [2021-12-06 21:41:03,571 INFO L226 Difference]: Without dead ends: 67 [2021-12-06 21:41:03,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:41:03,572 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:03,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 160 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:41:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-06 21:41:03,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2021-12-06 21:41:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 21:41:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-12-06 21:41:03,586 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 41 [2021-12-06 21:41:03,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:03,586 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-12-06 21:41:03,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 21:41:03,586 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-12-06 21:41:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 21:41:03,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:03,588 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:03,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 21:41:03,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:03,790 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:03,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 2 times [2021-12-06 21:41:03,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:03,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160186192] [2021-12-06 21:41:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:03,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:03,811 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:03,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396741276] [2021-12-06 21:41:03,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:41:03,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:03,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:03,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:03,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 21:41:03,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:41:03,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:41:03,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 21:41:03,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-06 21:41:03,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:41:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-06 21:41:04,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:04,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160186192] [2021-12-06 21:41:04,014 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:04,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396741276] [2021-12-06 21:41:04,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396741276] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:41:04,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:41:04,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-12-06 21:41:04,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406984335] [2021-12-06 21:41:04,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:41:04,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:41:04,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:04,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:41:04,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:41:04,015 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 21:41:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:04,103 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2021-12-06 21:41:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:41:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 46 [2021-12-06 21:41:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:04,105 INFO L225 Difference]: With dead ends: 73 [2021-12-06 21:41:04,105 INFO L226 Difference]: Without dead ends: 71 [2021-12-06 21:41:04,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:41:04,106 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 6 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:04,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 268 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:41:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-06 21:41:04,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2021-12-06 21:41:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 36 states have internal predecessors, (36), 19 states have call successors, (19), 8 states have call predecessors, (19), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-06 21:41:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2021-12-06 21:41:04,120 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 46 [2021-12-06 21:41:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:04,121 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2021-12-06 21:41:04,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 21:41:04,121 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2021-12-06 21:41:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 21:41:04,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:04,122 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:04,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 21:41:04,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 21:41:04,324 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:04,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash 900098756, now seen corresponding path program 3 times [2021-12-06 21:41:04,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:04,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491614776] [2021-12-06 21:41:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:04,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:04,361 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:04,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137607668] [2021-12-06 21:41:04,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:41:04,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:04,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:04,363 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:04,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 21:41:04,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 21:41:04,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:41:04,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 21:41:04,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 21:41:04,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:41:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 21:41:04,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:04,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491614776] [2021-12-06 21:41:04,669 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:04,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137607668] [2021-12-06 21:41:04,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137607668] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:41:04,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:41:04,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-12-06 21:41:04,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183822602] [2021-12-06 21:41:04,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:41:04,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:41:04,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:41:04,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:41:04,670 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 21:41:04,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:04,876 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2021-12-06 21:41:04,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:41:04,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 51 [2021-12-06 21:41:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:04,878 INFO L225 Difference]: With dead ends: 85 [2021-12-06 21:41:04,878 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 21:41:04,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:41:04,879 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:04,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 143 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:41:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 21:41:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2021-12-06 21:41:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 45 states have internal predecessors, (45), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 21:41:04,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2021-12-06 21:41:04,887 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 51 [2021-12-06 21:41:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:04,888 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2021-12-06 21:41:04,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 21:41:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2021-12-06 21:41:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 21:41:04,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:04,889 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:04,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 21:41:05,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:05,090 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:05,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:05,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2021-12-06 21:41:05,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:05,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303720920] [2021-12-06 21:41:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:05,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:05,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:05,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053238848] [2021-12-06 21:41:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:05,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:05,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:05,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:05,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 21:41:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:05,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 21:41:05,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-06 21:41:05,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:41:05,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:05,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303720920] [2021-12-06 21:41:05,545 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:05,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053238848] [2021-12-06 21:41:05,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053238848] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:41:05,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:41:05,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-12-06 21:41:05,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151181673] [2021-12-06 21:41:05,546 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:41:05,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:41:05,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:05,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:41:05,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:41:05,547 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:41:05,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:05,637 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2021-12-06 21:41:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:41:05,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 67 [2021-12-06 21:41:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:05,639 INFO L225 Difference]: With dead ends: 87 [2021-12-06 21:41:05,639 INFO L226 Difference]: Without dead ends: 85 [2021-12-06 21:41:05,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:41:05,640 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:05,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 168 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:41:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-06 21:41:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-12-06 21:41:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.06) internal successors, (53), 52 states have internal predecessors, (53), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-06 21:41:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2021-12-06 21:41:05,654 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 67 [2021-12-06 21:41:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:05,654 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2021-12-06 21:41:05,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:41:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2021-12-06 21:41:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 21:41:05,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:05,656 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:05,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 21:41:05,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:05,857 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:05,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:05,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2021-12-06 21:41:05,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:05,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301334053] [2021-12-06 21:41:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:05,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:05,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:05,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013251324] [2021-12-06 21:41:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:05,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:05,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:05,868 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:05,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 21:41:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:05,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 21:41:05,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-06 21:41:06,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:41:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-06 21:41:06,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:06,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301334053] [2021-12-06 21:41:06,828 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:06,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013251324] [2021-12-06 21:41:06,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013251324] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:41:06,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:41:06,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-12-06 21:41:06,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227242167] [2021-12-06 21:41:06,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:41:06,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:41:06,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:06,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:41:06,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:41:06,830 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 21:41:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:07,906 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2021-12-06 21:41:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:41:07,906 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 72 [2021-12-06 21:41:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:07,907 INFO L225 Difference]: With dead ends: 101 [2021-12-06 21:41:07,907 INFO L226 Difference]: Without dead ends: 87 [2021-12-06 21:41:07,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:41:07,908 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 19 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:07,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 221 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 21:41:07,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-06 21:41:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-12-06 21:41:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-06 21:41:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2021-12-06 21:41:07,924 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 72 [2021-12-06 21:41:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:07,925 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2021-12-06 21:41:07,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 21:41:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2021-12-06 21:41:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 21:41:07,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:07,927 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:07,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 21:41:08,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 21:41:08,127 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:08,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:08,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1961933060, now seen corresponding path program 4 times [2021-12-06 21:41:08,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:08,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371908314] [2021-12-06 21:41:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:08,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:08,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:08,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091351356] [2021-12-06 21:41:08,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 21:41:08,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:08,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:08,137 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:08,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 21:41:08,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 21:41:08,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:41:08,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 21:41:08,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 56 proven. 16 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 21:41:08,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:41:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 56 proven. 16 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 21:41:08,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:08,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371908314] [2021-12-06 21:41:08,605 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:08,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091351356] [2021-12-06 21:41:08,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091351356] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:41:08,605 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:41:08,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-12-06 21:41:08,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952437340] [2021-12-06 21:41:08,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:41:08,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 21:41:08,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:08,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 21:41:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:41:08,607 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 8 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 21:41:09,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:09,198 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2021-12-06 21:41:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:41:09,198 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 8 states have call predecessors, (24), 6 states have call successors, (24) Word has length 73 [2021-12-06 21:41:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:09,200 INFO L225 Difference]: With dead ends: 108 [2021-12-06 21:41:09,200 INFO L226 Difference]: Without dead ends: 106 [2021-12-06 21:41:09,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-12-06 21:41:09,201 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:09,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 145 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 21:41:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-06 21:41:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-12-06 21:41:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 63 states have internal predecessors, (64), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-06 21:41:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2021-12-06 21:41:09,215 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 73 [2021-12-06 21:41:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:09,215 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2021-12-06 21:41:09,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 8 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-06 21:41:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2021-12-06 21:41:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 21:41:09,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:09,216 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:09,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 21:41:09,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 21:41:09,418 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash 671163038, now seen corresponding path program 2 times [2021-12-06 21:41:09,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:09,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632351427] [2021-12-06 21:41:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:09,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:09,446 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:09,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294286808] [2021-12-06 21:41:09,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:41:09,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:09,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:09,450 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:09,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 21:41:09,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:41:09,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:41:09,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 21:41:09,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-12-06 21:41:09,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:41:09,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:09,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632351427] [2021-12-06 21:41:09,886 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:09,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294286808] [2021-12-06 21:41:09,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294286808] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:41:09,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:41:09,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-12-06 21:41:09,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346597856] [2021-12-06 21:41:09,886 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:41:09,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:41:09,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:09,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:41:09,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:41:09,887 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 21:41:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:09,991 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2021-12-06 21:41:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 21:41:09,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 94 [2021-12-06 21:41:09,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:09,992 INFO L225 Difference]: With dead ends: 113 [2021-12-06 21:41:09,992 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 21:41:09,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:41:09,993 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:09,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 234 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:41:09,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 21:41:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-12-06 21:41:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 23 states have call successors, (23), 17 states have call predecessors, (23), 17 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 21:41:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-12-06 21:41:10,005 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 94 [2021-12-06 21:41:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:10,005 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-12-06 21:41:10,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 21:41:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-12-06 21:41:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 21:41:10,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:10,006 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:10,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 21:41:10,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 21:41:10,208 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:10,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 3 times [2021-12-06 21:41:10,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:10,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392588447] [2021-12-06 21:41:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:10,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:10,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:10,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096309960] [2021-12-06 21:41:10,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:41:10,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:10,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:10,242 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:10,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 21:41:10,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 21:41:10,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:41:10,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 21:41:10,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2021-12-06 21:41:10,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:41:12,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:12,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392588447] [2021-12-06 21:41:12,954 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:12,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096309960] [2021-12-06 21:41:12,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096309960] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:41:12,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:41:12,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-12-06 21:41:12,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961128544] [2021-12-06 21:41:12,955 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:41:12,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:41:12,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:41:12,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=105, Unknown=1, NotChecked=0, Total=132 [2021-12-06 21:41:12,955 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 21:41:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:13,164 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2021-12-06 21:41:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:41:13,165 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 121 [2021-12-06 21:41:13,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:13,165 INFO L225 Difference]: With dead ends: 111 [2021-12-06 21:41:13,165 INFO L226 Difference]: Without dead ends: 107 [2021-12-06 21:41:13,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=58, Invalid=213, Unknown=1, NotChecked=0, Total=272 [2021-12-06 21:41:13,166 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:13,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 99 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:41:13,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-06 21:41:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-12-06 21:41:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 23 states have call successors, (23), 18 states have call predecessors, (23), 17 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 21:41:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2021-12-06 21:41:13,178 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 121 [2021-12-06 21:41:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:13,178 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2021-12-06 21:41:13,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 21:41:13,178 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2021-12-06 21:41:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 21:41:13,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:13,180 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:13,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-06 21:41:13,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:13,381 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:13,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 2 times [2021-12-06 21:41:13,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:13,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145639616] [2021-12-06 21:41:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:13,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:13,410 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:13,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941518165] [2021-12-06 21:41:13,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:41:13,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:13,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:13,413 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:13,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 21:41:13,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:41:13,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:41:13,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:41:13,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 44 proven. 42 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-12-06 21:41:13,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:41:13,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:13,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145639616] [2021-12-06 21:41:13,818 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:13,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941518165] [2021-12-06 21:41:13,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941518165] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:41:13,819 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:41:13,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-12-06 21:41:13,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589500102] [2021-12-06 21:41:13,819 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 21:41:13,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:41:13,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:13,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:41:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:41:13,820 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 21:41:13,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:13,948 INFO L93 Difference]: Finished difference Result 133 states and 142 transitions. [2021-12-06 21:41:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:41:13,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 126 [2021-12-06 21:41:13,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:13,950 INFO L225 Difference]: With dead ends: 133 [2021-12-06 21:41:13,950 INFO L226 Difference]: Without dead ends: 122 [2021-12-06 21:41:13,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:41:13,951 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:13,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 324 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:41:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-06 21:41:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-12-06 21:41:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 74 states have (on average 1.0135135135135136) internal successors, (75), 74 states have internal predecessors, (75), 28 states have call successors, (28), 20 states have call predecessors, (28), 19 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-06 21:41:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2021-12-06 21:41:13,972 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 126 [2021-12-06 21:41:13,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:13,972 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2021-12-06 21:41:13,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 21:41:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2021-12-06 21:41:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 21:41:13,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:13,974 INFO L514 BasicCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:41:13,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 21:41:14,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 21:41:14,175 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:14,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash 593109261, now seen corresponding path program 3 times [2021-12-06 21:41:14,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:14,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098843816] [2021-12-06 21:41:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:14,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:14,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 21:41:14,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291595636] [2021-12-06 21:41:14,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:41:14,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:41:14,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:41:14,204 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:41:14,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 21:41:14,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 21:41:14,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:41:15,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 21:41:15,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:41:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 251 proven. 69 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked. [2021-12-06 21:41:25,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:41:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 196 proven. 39 refuted. 0 times theorem prover too weak. 1293 trivial. 0 not checked. [2021-12-06 21:41:28,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:28,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098843816] [2021-12-06 21:41:28,409 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 21:41:28,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291595636] [2021-12-06 21:41:28,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291595636] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:41:28,410 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:41:28,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2021-12-06 21:41:28,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878409720] [2021-12-06 21:41:28,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:41:28,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 21:41:28,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:28,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 21:41:28,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:41:28,411 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2021-12-06 21:41:30,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:30,541 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2021-12-06 21:41:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:41:30,543 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 153 [2021-12-06 21:41:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:30,543 INFO L225 Difference]: With dead ends: 122 [2021-12-06 21:41:30,543 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 21:41:30,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-12-06 21:41:30,544 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:30,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 91 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 21:41:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 21:41:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 21:41:30,545 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 21:41:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 21:41:30,545 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2021-12-06 21:41:30,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:30,545 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 21:41:30,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2021-12-06 21:41:30,545 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 21:41:30,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 21:41:30,547 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 21:41:30,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 21:41:30,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 21:41:30,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 21:41:59,722 WARN L227 SmtUtils]: Spent 19.36s on a formula simplification. DAG size of input: 152 DAG size of output: 71 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-12-06 21:41:59,898 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 21:41:59,898 INFO L854 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= (+ (* 6 |ULTIMATE.start_main_~z~0#1|) (* 12 |ULTIMATE.start_main_~y~0#1|)) (+ 12 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2021-12-06 21:41:59,899 INFO L854 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (let ((.cse3 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse6 (* 12 |ULTIMATE.start_main_~y~0#1|)) (.cse4 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse5 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse0 (= |ULTIMATE.start_main_~y~0#1| (+ .cse4 .cse5 1))) (.cse1 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse2 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse3) (+ 6 (* 18 |ULTIMATE.start_main_~x~0#1|) .cse6))) (.cse7 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 .cse2 (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse3)) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ .cse4 5 |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ .cse5 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~z~0#1|)) (= (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse6) (+ 12 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) .cse1 (< |ULTIMATE.start_main_~a~0#1| (div (+ (* |ULTIMATE.start_main_~z~0#1| (- 1)) 6) (- 6))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 20) .cse7) (and .cse0 (= |ULTIMATE.start_main_~x~0#1| 1) .cse1 (< |ULTIMATE.start_main_~a~0#1| 1) .cse2 .cse7) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))))) [2021-12-06 21:41:59,899 INFO L854 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* 18 |ULTIMATE.start_main_~x~0#1|) (* 12 |ULTIMATE.start_main_~y~0#1|)))) [2021-12-06 21:41:59,899 INFO L854 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* 18 |ULTIMATE.start_main_~x~0#1|) (* 12 |ULTIMATE.start_main_~y~0#1|)))) [2021-12-06 21:41:59,899 INFO L854 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse3 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse6 (* 12 |ULTIMATE.start_main_~y~0#1|)) (.cse4 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse5 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse0 (= |ULTIMATE.start_main_~y~0#1| (+ .cse4 .cse5 1))) (.cse1 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse2 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse3) (+ 6 (* 18 |ULTIMATE.start_main_~x~0#1|) .cse6))) (.cse7 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 .cse2 (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse3)) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ .cse4 5 |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ .cse5 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~z~0#1|)) (= (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse6) (+ 12 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) .cse1 (< |ULTIMATE.start_main_~a~0#1| (div (+ (* |ULTIMATE.start_main_~z~0#1| (- 1)) 6) (- 6))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 20) .cse7) (and .cse0 (= |ULTIMATE.start_main_~x~0#1| 1) .cse1 (< |ULTIMATE.start_main_~a~0#1| 1) .cse2 .cse7) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))))) [2021-12-06 21:41:59,899 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-12-06 21:41:59,899 INFO L858 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2021-12-06 21:41:59,899 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) 5 |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~z~0#1|)) (= (+ (* 6 |ULTIMATE.start_main_~z~0#1|) (* 12 |ULTIMATE.start_main_~y~0#1|)) (+ 12 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2021-12-06 21:41:59,899 INFO L854 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= (+ (* 6 |ULTIMATE.start_main_~z~0#1|) (* 12 |ULTIMATE.start_main_~y~0#1|)) (+ 12 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2021-12-06 21:41:59,899 INFO L854 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= (+ (* 6 |ULTIMATE.start_main_~z~0#1|) (* 12 |ULTIMATE.start_main_~y~0#1|)) (+ 12 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2021-12-06 21:41:59,900 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 21:41:59,900 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 21:41:59,900 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 21:41:59,900 INFO L861 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2021-12-06 21:41:59,900 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-12-06 21:41:59,900 INFO L854 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* 18 |ULTIMATE.start_main_~x~0#1|) (* 12 |ULTIMATE.start_main_~y~0#1|)))) [2021-12-06 21:41:59,900 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))))) (or (let ((.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|))) (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (or (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767) (<= 0 |ULTIMATE.start_main_~a~0#1|)) (and (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|)) (< (div (+ |ULTIMATE.start_main_~a~0#1| 32768) (- 65536)) (+ (div (+ (- 1) (* |ULTIMATE.start_main_~a~0#1| (- 1))) 65536) 1)) (< |ULTIMATE.start_main_~a~0#1| 0))) .cse0 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1) (+ 6 (* 18 |ULTIMATE.start_main_~x~0#1|) (* 12 |ULTIMATE.start_main_~y~0#1|))) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1)))) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2021-12-06 21:41:59,900 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-12-06 21:41:59,900 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) 5 |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~z~0#1|)) (= (+ (* 6 |ULTIMATE.start_main_~z~0#1|) (* 12 |ULTIMATE.start_main_~y~0#1|)) (+ 12 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2021-12-06 21:41:59,900 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* 18 |ULTIMATE.start_main_~x~0#1|) (* 12 |ULTIMATE.start_main_~y~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 20) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2021-12-06 21:41:59,900 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-12-06 21:41:59,901 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-12-06 21:41:59,901 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-12-06 21:41:59,901 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-12-06 21:41:59,901 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-12-06 21:41:59,901 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-12-06 21:41:59,903 INFO L732 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1, 1, 1, 1] [2021-12-06 21:41:59,904 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 21:41:59,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 09:41:59 BoogieIcfgContainer [2021-12-06 21:41:59,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 21:41:59,914 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 21:41:59,914 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 21:41:59,914 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 21:41:59,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:41:00" (3/4) ... [2021-12-06 21:41:59,916 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 21:41:59,920 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-06 21:41:59,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-06 21:41:59,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 21:41:59,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 21:41:59,924 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 21:41:59,946 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 21:41:59,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 21:41:59,947 INFO L158 Benchmark]: Toolchain (without parser) took 59450.22ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 71.2MB in the beginning and 56.9MB in the end (delta: 14.3MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2021-12-06 21:41:59,947 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 51.1MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:41:59,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.65ms. Allocated memory is still 104.9MB. Free memory was 70.9MB in the beginning and 80.5MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 21:41:59,948 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.77ms. Allocated memory is still 104.9MB. Free memory was 80.5MB in the beginning and 79.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:41:59,948 INFO L158 Benchmark]: Boogie Preprocessor took 18.12ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 77.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:41:59,948 INFO L158 Benchmark]: RCFGBuilder took 187.19ms. Allocated memory is still 104.9MB. Free memory was 77.8MB in the beginning and 67.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 21:41:59,948 INFO L158 Benchmark]: TraceAbstraction took 58984.84ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 67.4MB in the beginning and 60.0MB in the end (delta: 7.4MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2021-12-06 21:41:59,949 INFO L158 Benchmark]: Witness Printer took 32.68ms. Allocated memory is still 125.8MB. Free memory was 60.0MB in the beginning and 56.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:41:59,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 51.1MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.65ms. Allocated memory is still 104.9MB. Free memory was 70.9MB in the beginning and 80.5MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.77ms. Allocated memory is still 104.9MB. Free memory was 80.5MB in the beginning and 79.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.12ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 77.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 187.19ms. Allocated memory is still 104.9MB. Free memory was 77.8MB in the beginning and 67.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 58984.84ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 67.4MB in the beginning and 60.0MB in the end (delta: 7.4MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. * Witness Printer took 32.68ms. Allocated memory is still 125.8MB. Free memory was 60.0MB in the beginning and 56.9MB 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.9s, OverallIterations: 15, TraceHistogramMax: 28, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 29.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 209 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 150 mSDsluCounter, 2369 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1831 mSDsCounter, 353 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1457 IncrementalHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 353 mSolverCounterUnsat, 538 mSDtfsCounter, 1457 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1488 GetRequests, 1335 SyntacticMatches, 10 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=14, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 46 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 73 PreInvPairs, 128 NumberOfFragments, 852 HoareAnnotationTreeSize, 73 FomulaSimplifications, 6385 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 14 FomulaSimplificationsInter, 15481 FormulaSimplificationTreeSizeReductionInter, 28.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 919 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1334 ConstructedInterpolants, 0 QuantifiedInterpolants, 6095 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1742 ConjunctsInSsa, 242 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 7352/7616 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: 33]: Loop Invariant Derived loop invariant: (((((cond == 1 && n * n * n == x) && 6 * z + 12 * y == 12 + z * z) && z == 6 + 6 * n) && n <= a + 1) && a <= 20) && 0 <= a - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-06 21:41:59,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a0937b8-149a-4b9a-ba58-b0fc1fc135da/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