./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 376367d14f0ef5deff3321a7267050cf9f2383eb99d0a19dad6a556c0772ff28 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:25:00,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:25:00,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:25:00,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:25:00,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:25:00,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:25:00,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:25:00,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:25:00,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:25:00,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:25:00,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:25:00,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:25:00,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:25:00,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:25:00,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:25:00,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:25:00,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:25:00,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:25:00,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:25:00,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:25:00,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:25:00,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:25:00,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:25:00,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:25:00,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:25:00,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:25:00,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:25:00,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:25:00,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:25:00,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:25:00,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:25:00,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:25:00,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:25:00,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:25:00,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:25:00,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:25:00,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:25:00,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:25:00,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:25:00,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:25:00,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:25:00,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:25:00,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:25:00,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:25:00,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:25:00,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:25:00,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:25:00,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:25:00,917 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:25:00,918 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:25:00,918 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:25:00,918 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:25:00,919 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:25:00,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:25:00,919 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:25:00,920 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:25:00,920 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:25:00,920 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:25:00,921 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:25:00,921 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:25:00,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:25:00,922 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:25:00,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:25:00,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:25:00,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:25:00,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:25:00,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:25:00,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:25:00,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:25:00,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:25:00,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:25:00,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:25:00,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:25:00,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:25:00,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:00,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:25:00,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:25:00,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:25:00,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:25:00,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:25:00,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:25:00,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:25:00,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:25:00,930 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376367d14f0ef5deff3321a7267050cf9f2383eb99d0a19dad6a556c0772ff28 [2021-11-23 02:25:01,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:25:01,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:25:01,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:25:01,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:25:01,301 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:25:01,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c [2021-11-23 02:25:01,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/data/4e2de8a95/f65b709201e748549d86e314867e16a7/FLAGc5c957dc2 [2021-11-23 02:25:01,975 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:25:01,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c [2021-11-23 02:25:01,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/data/4e2de8a95/f65b709201e748549d86e314867e16a7/FLAGc5c957dc2 [2021-11-23 02:25:02,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/data/4e2de8a95/f65b709201e748549d86e314867e16a7 [2021-11-23 02:25:02,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:25:02,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:25:02,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:02,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:25:02,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:25:02,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebaa2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02, skipping insertion in model container [2021-11-23 02:25:02,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:25:02,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:25:02,678 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_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c[525,538] [2021-11-23 02:25:02,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:02,733 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:25:02,748 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_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c[525,538] [2021-11-23 02:25:02,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:02,785 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:25:02,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02 WrapperNode [2021-11-23 02:25:02,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:02,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:02,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:25:02,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:25:02,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,878 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2021-11-23 02:25:02,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:02,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:25:02,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:25:02,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:25:02,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:25:02,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:25:02,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:25:02,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:25:02,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (1/1) ... [2021-11-23 02:25:02,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:02,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:02,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:25:02,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:25:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:25:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:25:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:25:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:25:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:25:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:25:03,121 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:25:03,123 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:25:03,369 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:25:03,409 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:25:03,409 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:25:03,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:03 BoogieIcfgContainer [2021-11-23 02:25:03,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:25:03,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:25:03,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:25:03,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:25:03,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:25:02" (1/3) ... [2021-11-23 02:25:03,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ba7c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:03, skipping insertion in model container [2021-11-23 02:25:03,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:02" (2/3) ... [2021-11-23 02:25:03,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ba7c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:03, skipping insertion in model container [2021-11-23 02:25:03,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:03" (3/3) ... [2021-11-23 02:25:03,423 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound100.c [2021-11-23 02:25:03,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:25:03,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:25:03,519 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:25:03,526 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:25:03,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:25:03,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 02:25:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:25:03,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:03,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:03,560 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:03,567 INFO L85 PathProgramCache]: Analyzing trace with hash -678335095, now seen corresponding path program 1 times [2021-11-23 02:25:03,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:03,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364440512] [2021-11-23 02:25:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:03,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:03,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:03,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364440512] [2021-11-23 02:25:03,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364440512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:03,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:03,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:25:03,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787277690] [2021-11-23 02:25:03,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:03,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:25:03,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:03,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:25:03,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:25:03,790 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-23 02:25:05,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:05,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:05,842 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2021-11-23 02:25:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:25:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2021-11-23 02:25:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:05,934 INFO L225 Difference]: With dead ends: 44 [2021-11-23 02:25:05,935 INFO L226 Difference]: Without dead ends: 22 [2021-11-23 02:25:05,938 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 [2021-11-23 02:25:05,943 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:05,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 02:25:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-23 02:25:05,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-23 02:25:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:25:05,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2021-11-23 02:25:05,992 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 7 [2021-11-23 02:25:05,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:05,993 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2021-11-23 02:25:05,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-23 02:25:05,994 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2021-11-23 02:25:05,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:25:05,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:05,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:05,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:25:05,996 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:05,997 INFO L85 PathProgramCache]: Analyzing trace with hash 520368722, now seen corresponding path program 1 times [2021-11-23 02:25:05,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:05,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978367156] [2021-11-23 02:25:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:05,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:06,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:06,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978367156] [2021-11-23 02:25:06,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978367156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:06,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:06,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:25:06,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253288747] [2021-11-23 02:25:06,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:06,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:25:06,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:06,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:25:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:25:06,078 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-11-23 02:25:06,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:06,128 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2021-11-23 02:25:06,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:25:06,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2021-11-23 02:25:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:06,130 INFO L225 Difference]: With dead ends: 42 [2021-11-23 02:25:06,130 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 02:25:06,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:25:06,134 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:06,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:25:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 02:25:06,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-23 02:25:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:25:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-11-23 02:25:06,146 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 9 [2021-11-23 02:25:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:06,146 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-11-23 02:25:06,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-11-23 02:25:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2021-11-23 02:25:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:25:06,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:06,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:06,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:25:06,149 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:06,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:06,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1389535714, now seen corresponding path program 1 times [2021-11-23 02:25:06,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:06,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233370992] [2021-11-23 02:25:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:06,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:06,170 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:25:06,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991847046] [2021-11-23 02:25:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:06,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:06,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:06,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:25:06,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:25:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:06,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:25:06,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:06,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:25:06,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:06,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233370992] [2021-11-23 02:25:06,387 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:25:06,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991847046] [2021-11-23 02:25:06,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991847046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:06,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:06,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:25:06,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765595302] [2021-11-23 02:25:06,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:06,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:25:06,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:06,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:25:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:25:06,392 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:08,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:08,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:08,434 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2021-11-23 02:25:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:25:08,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:25:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:08,526 INFO L225 Difference]: With dead ends: 37 [2021-11-23 02:25:08,526 INFO L226 Difference]: Without dead ends: 28 [2021-11-23 02:25:08,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:25:08,529 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:08,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 86 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 02:25:08,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-23 02:25:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-11-23 02:25:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:25:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-11-23 02:25:08,540 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 10 [2021-11-23 02:25:08,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:08,540 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-11-23 02:25:08,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:08,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2021-11-23 02:25:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:25:08,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:08,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:08,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:25:08,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:08,762 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:08,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1388046164, now seen corresponding path program 1 times [2021-11-23 02:25:08,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:08,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754061778] [2021-11-23 02:25:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:08,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:09,221 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:09,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754061778] [2021-11-23 02:25:09,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754061778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:09,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:09,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:25:09,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127992715] [2021-11-23 02:25:09,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:09,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:25:09,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:09,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:25:09,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:25:09,226 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:12,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:14,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:16,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:25:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:16,597 INFO L93 Difference]: Finished difference Result 59 states and 89 transitions. [2021-11-23 02:25:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:25:16,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:25:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:16,599 INFO L225 Difference]: With dead ends: 59 [2021-11-23 02:25:16,599 INFO L226 Difference]: Without dead ends: 39 [2021-11-23 02:25:16,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:25:16,602 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 24 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:16,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 157 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 59 Invalid, 3 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 02:25:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-23 02:25:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-23 02:25:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:25:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2021-11-23 02:25:16,632 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 10 [2021-11-23 02:25:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:16,632 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2021-11-23 02:25:16,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2021-11-23 02:25:16,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:25:16,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:16,634 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:16,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:25:16,635 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:16,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1970023331, now seen corresponding path program 1 times [2021-11-23 02:25:16,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:16,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153138208] [2021-11-23 02:25:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:16,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:16,662 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:25:16,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694430475] [2021-11-23 02:25:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:16,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:16,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:16,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:25:16,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:25:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:16,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:25:16,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:16,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:16,927 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:16,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153138208] [2021-11-23 02:25:16,928 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:25:16,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694430475] [2021-11-23 02:25:16,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694430475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:25:16,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432494475] [2021-11-23 02:25:16,968 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:25:16,968 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:25:16,974 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:25:16,981 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:25:16,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:25:17,432 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 14 for LOIs [2021-11-23 02:25:17,444 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:25:17,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [432494475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:17,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:25:17,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4] total 15 [2021-11-23 02:25:17,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898018193] [2021-11-23 02:25:17,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:17,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:25:17,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:17,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:25:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:25:17,832 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-11-23 02:25:18,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:18,518 INFO L93 Difference]: Finished difference Result 78 states and 117 transitions. [2021-11-23 02:25:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:25:18,519 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 02:25:18,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:18,521 INFO L225 Difference]: With dead ends: 78 [2021-11-23 02:25:18,521 INFO L226 Difference]: Without dead ends: 59 [2021-11-23 02:25:18,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:25:18,524 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:18,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 100 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 02:25:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-23 02:25:18,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2021-11-23 02:25:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.24) internal successors, (31), 28 states have internal predecessors, (31), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:25:18,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2021-11-23 02:25:18,542 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 12 [2021-11-23 02:25:18,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:18,543 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2021-11-23 02:25:18,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-11-23 02:25:18,543 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2021-11-23 02:25:18,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:25:18,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:18,545 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:18,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:25:18,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:18,769 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:18,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash 600084205, now seen corresponding path program 1 times [2021-11-23 02:25:18,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:18,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455532630] [2021-11-23 02:25:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:18,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:18,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:25:18,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458664422] [2021-11-23 02:25:18,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:18,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:18,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:18,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:25:18,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:25:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:18,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:25:18,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:18,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:19,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:19,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455532630] [2021-11-23 02:25:19,022 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:25:19,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458664422] [2021-11-23 02:25:19,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458664422] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:25:19,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1312790728] [2021-11-23 02:25:19,025 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:25:19,026 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:25:19,026 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:25:19,027 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:25:19,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:25:19,321 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 16 for LOIs [2021-11-23 02:25:19,335 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:25:19,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1312790728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:19,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:25:19,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 5] total 17 [2021-11-23 02:25:19,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139685348] [2021-11-23 02:25:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:19,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:25:19,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:25:19,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:25:19,831 INFO L87 Difference]: Start difference. First operand 47 states and 64 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-11-23 02:25:21,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:21,124 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2021-11-23 02:25:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:25:21,126 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:25:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:21,127 INFO L225 Difference]: With dead ends: 68 [2021-11-23 02:25:21,127 INFO L226 Difference]: Without dead ends: 65 [2021-11-23 02:25:21,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:25:21,129 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 11 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:21,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 107 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:25:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-23 02:25:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2021-11-23 02:25:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 30 states have internal predecessors, (34), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:25:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2021-11-23 02:25:21,164 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 13 [2021-11-23 02:25:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:21,164 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2021-11-23 02:25:21,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-11-23 02:25:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2021-11-23 02:25:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:25:21,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:21,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:21,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:25:21,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:21,381 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:21,382 INFO L85 PathProgramCache]: Analyzing trace with hash 601573755, now seen corresponding path program 1 times [2021-11-23 02:25:21,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:21,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020709663] [2021-11-23 02:25:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:21,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:21,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:21,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020709663] [2021-11-23 02:25:21,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020709663] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:25:21,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262060220] [2021-11-23 02:25:21,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:21,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:21,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:21,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:25:21,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:25:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:21,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:25:21,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:21,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:22,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262060220] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:25:22,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1668972473] [2021-11-23 02:25:22,217 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:25:22,218 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:25:22,218 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:25:22,218 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:25:22,218 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:25:22,503 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2021-11-23 02:25:22,554 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:25:23,298 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1143#(and (<= 2 ~counter~0) (< ~counter~0 101) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:25:23,299 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:25:23,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:25:23,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-11-23 02:25:23,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779261743] [2021-11-23 02:25:23,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:25:23,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:25:23,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:25:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:25:23,301 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:28,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:30,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:32,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:34,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:36,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:38,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:38,445 INFO L93 Difference]: Finished difference Result 92 states and 133 transitions. [2021-11-23 02:25:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:25:38,446 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:25:38,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:38,448 INFO L225 Difference]: With dead ends: 92 [2021-11-23 02:25:38,448 INFO L226 Difference]: Without dead ends: 65 [2021-11-23 02:25:38,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-11-23 02:25:38,451 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 42 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 96 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:38,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 404 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 193 Invalid, 5 Unknown, 0 Unchecked, 15.0s Time] [2021-11-23 02:25:38,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-23 02:25:38,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-11-23 02:25:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 32 states have (on average 1.21875) internal successors, (39), 34 states have internal predecessors, (39), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-23 02:25:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 93 transitions. [2021-11-23 02:25:38,470 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 93 transitions. Word has length 13 [2021-11-23 02:25:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:38,471 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 93 transitions. [2021-11-23 02:25:38,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 93 transitions. [2021-11-23 02:25:38,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:25:38,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:38,473 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:38,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:25:38,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:38,689 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:38,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:38,690 INFO L85 PathProgramCache]: Analyzing trace with hash -339513844, now seen corresponding path program 1 times [2021-11-23 02:25:38,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:38,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572605658] [2021-11-23 02:25:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:38,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:38,705 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:25:38,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829530255] [2021-11-23 02:25:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:38,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:38,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:38,725 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:25:38,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:25:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:38,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:25:38,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:25:39,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:25:39,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:39,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572605658] [2021-11-23 02:25:39,000 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:25:39,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829530255] [2021-11-23 02:25:39,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829530255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:39,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:39,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:25:39,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349104281] [2021-11-23 02:25:39,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:39,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:25:39,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:39,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:25:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:25:39,003 INFO L87 Difference]: Start difference. First operand 64 states and 93 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (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) [2021-11-23 02:25:39,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:39,570 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-11-23 02:25:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:25:39,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (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 20 [2021-11-23 02:25:39,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:39,572 INFO L225 Difference]: With dead ends: 75 [2021-11-23 02:25:39,572 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 02:25:39,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:25:39,574 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:39,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 109 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 02:25:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 02:25:39,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-23 02:25:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 02:25:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 74 transitions. [2021-11-23 02:25:39,586 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 74 transitions. Word has length 20 [2021-11-23 02:25:39,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:39,587 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 74 transitions. [2021-11-23 02:25:39,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (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) [2021-11-23 02:25:39,587 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 74 transitions. [2021-11-23 02:25:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:25:39,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:39,589 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:39,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:25:39,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 02:25:39,794 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:39,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1744099301, now seen corresponding path program 1 times [2021-11-23 02:25:39,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:39,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118045845] [2021-11-23 02:25:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:39,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:39,807 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:25:39,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266170420] [2021-11-23 02:25:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:39,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:39,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:39,809 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:25:39,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:25:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:39,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:25:39,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 02:25:40,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:25:40,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:40,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118045845] [2021-11-23 02:25:40,096 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:25:40,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266170420] [2021-11-23 02:25:40,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266170420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:40,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:40,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:25:40,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045331817] [2021-11-23 02:25:40,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:40,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:25:40,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:25:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:25:40,099 INFO L87 Difference]: Start difference. First operand 51 states and 74 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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) [2021-11-23 02:25:42,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:25:44,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:25:44,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:44,539 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-11-23 02:25:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:25:44,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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 23 [2021-11-23 02:25:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:44,541 INFO L225 Difference]: With dead ends: 61 [2021-11-23 02:25:44,541 INFO L226 Difference]: Without dead ends: 58 [2021-11-23 02:25:44,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:25:44,542 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:44,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 120 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 02:25:44,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-23 02:25:44,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2021-11-23 02:25:44,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:25:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2021-11-23 02:25:44,553 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 23 [2021-11-23 02:25:44,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:44,554 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2021-11-23 02:25:44,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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) [2021-11-23 02:25:44,555 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2021-11-23 02:25:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 02:25:44,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:44,557 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:44,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-23 02:25:44,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:44,765 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:44,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:44,765 INFO L85 PathProgramCache]: Analyzing trace with hash -787687870, now seen corresponding path program 1 times [2021-11-23 02:25:44,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:44,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895770836] [2021-11-23 02:25:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:44,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:44,790 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:25:44,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871446184] [2021-11-23 02:25:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:44,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:25:44,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:44,793 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:25:44,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:25:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:44,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:25:44,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-23 02:25:45,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-23 02:25:45,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:45,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895770836] [2021-11-23 02:25:45,334 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:25:45,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871446184] [2021-11-23 02:25:45,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871446184] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:25:45,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2704421] [2021-11-23 02:25:45,339 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-23 02:25:45,339 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:25:45,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:25:45,340 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:25:45,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:29:27,608 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2021-11-23 02:29:27,735 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:31:09,501 WARN L227 SmtUtils]: Spent 1.62m on a formula simplification. DAG size of input: 275 DAG size of output: 267 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:11,517 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse8 (<= 2 |c_ULTIMATE.start_main_#t~post6#1|)) (.cse7 (<= 0 |c_#NULL.base|)) (.cse1 (<= 1 |c_ULTIMATE.start_main_#t~post6#1|)) (.cse9 (<= |c_#NULL.offset| 0)) (.cse2 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse3 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse10 (<= |c_ULTIMATE.start_main_#t~post6#1| 101)) (.cse11 (<= |c_#NULL.base| 0)) (.cse62 (<= 0 |c_#NULL.offset|)) (.cse4 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse5 (<= 0 |c_#StackHeapBarrier|)) (.cse6 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (and (let ((.cse0 (= c_~counter~0 (+ |c_ULTIMATE.start_main_#t~post6#1| 1)))) (or (and .cse0 (= |c_ULTIMATE.start_main_~p~0#1| 0) .cse1 (= |c_ULTIMATE.start_main_~h~0#1| 0) .cse2 .cse3 (= |c_#NULL.offset| 0) (< (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296) (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) .cse4 (< |c_ULTIMATE.start_main_#t~post6#1| 101) .cse5 .cse6 (= |c_#NULL.base| 0)) (and .cse7 .cse0 .cse8 .cse9 .cse2 .cse3 .cse10 .cse11 (exists ((|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| Int) (|aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| Int)) (let ((.cse13 (* 4 |c_ULTIMATE.start_main_~q~0#1|)) (.cse12 (+ (* 4294967296 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|))) (and (< .cse12 (+ .cse13 4)) (<= 0 .cse12) (<= .cse13 .cse12) (<= 0 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|) (< |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) (let ((.cse16 (mod |c_ULTIMATE.start_main_~h~0#1| 4294967296)) (.cse28 (<= |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~h~0#1|)) (.cse29 (<= |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse27 (<= 3 |c_ULTIMATE.start_main_#t~post6#1|)) (.cse39 (mod (+ (* |c_ULTIMATE.start_main_~q~0#1| 4294967294) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| (* |c_ULTIMATE.start_main_~h~0#1| 2)) 4294967296)) (.cse14 (div (mod (+ (* |c_ULTIMATE.start_main_~q~0#1| 4294967295) |c_ULTIMATE.start_main_~h~0#1|) 4294967296) 2))) (or (let ((.cse15 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (and (= .cse14 |c_ULTIMATE.start_main_~p~0#1|) (< .cse15 .cse16) (let ((.cse26 (not (= (ite (< .cse15 .cse39) 1 0) 0)))) (or (and (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse20 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1)))) (.cse18 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse17 (* |v_ULTIMATE.start_main_~h~0#1_30| 4))) (let ((.cse19 (* .cse17 |c_ULTIMATE.start_main_~n~0#1|)) (.cse21 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse18)) (.cse22 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|)) (.cse23 (* |c_ULTIMATE.start_main_~n~0#1| .cse18)) (.cse24 (* .cse20 .cse20))) (and (not (= (ite (= (mod (+ (* (* .cse17 .cse18) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse19 .cse18) 4294967295) (* (* (* .cse20 .cse18) .cse18) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse20) .cse18) (* (* .cse21 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* .cse22 .cse20)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse17 .cse20) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse22 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse18) (* (* .cse18 .cse18) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse19 .cse20) 4294967295) (* .cse22 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse23 .cse18) 4294967295) (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) |c_ULTIMATE.start_main_~r~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse18) |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)) (not (= 0 (ite (= (mod (+ (* .cse23 4294967295) .cse24 (* .cse18 |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0))) (not (= (ite (= (mod (let ((.cse25 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse20) .cse18) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse18) .cse18) 4294967295) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse18) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse21 .cse18) 4294967295) (* (* (* .cse25 |c_ULTIMATE.start_main_~n~0#1|) .cse18) 4294967295) (* (* .cse25 .cse18) |c_ULTIMATE.start_main_~r~0#1|) (* .cse22 |v_ULTIMATE.start_main_~h~0#1_30|))) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod .cse23 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~r~0#1| .cse18) .cse24) 4294967296)) 1 0) 0)))))) .cse26 .cse27) (and .cse28 .cse29 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse33 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1)))) (.cse31 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse30 (* |v_ULTIMATE.start_main_~h~0#1_30| 4))) (let ((.cse32 (* .cse30 |c_ULTIMATE.start_main_~n~0#1|)) (.cse34 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse31)) (.cse35 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|)) (.cse36 (* |c_ULTIMATE.start_main_~n~0#1| .cse31)) (.cse37 (* .cse33 .cse33))) (and (not (= (ite (= (mod (+ (* (* .cse30 .cse31) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse32 .cse31) 4294967295) (* (* (* .cse33 .cse31) .cse31) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse33) .cse31) (* (* .cse34 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* .cse35 .cse33)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse30 .cse33) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse35 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse31) (* (* .cse31 .cse31) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse32 .cse33) 4294967295) (* .cse35 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse36 .cse31) 4294967295) (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) |c_ULTIMATE.start_main_~r~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse31) |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)) (not (= 0 (ite (= (mod (+ (* .cse36 4294967295) .cse37 (* .cse31 |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0))) (not (= (ite (= (mod (let ((.cse38 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse33) .cse31) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse31) .cse31) 4294967295) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse31) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse34 .cse31) 4294967295) (* (* (* .cse38 |c_ULTIMATE.start_main_~n~0#1|) .cse31) 4294967295) (* (* .cse38 .cse31) |c_ULTIMATE.start_main_~r~0#1|) (* .cse35 |v_ULTIMATE.start_main_~h~0#1_30|))) 4294967296) 0) 1 0) 0)) (<= |v_ULTIMATE.start_main_~h~0#1_30| 0) (not (= (ite (= (mod .cse36 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~r~0#1| .cse31) .cse37) 4294967296)) 1 0) 0)) (<= 0 |v_ULTIMATE.start_main_~h~0#1_30|))))) .cse26))))) (let ((.cse40 (mod (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) 4294967296))) (and (<= .cse16 .cse40) (let ((.cse41 (not (= (ite (< .cse40 .cse39) 1 0) 0)))) (or (and .cse28 .cse41 .cse29 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse51 (* |v_ULTIMATE.start_main_~h~0#1_30| 4)) (.cse44 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse47 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1))))) (let ((.cse43 (* .cse47 .cse47)) (.cse42 (* |c_ULTIMATE.start_main_~n~0#1| .cse44)) (.cse50 (* .cse51 |c_ULTIMATE.start_main_~n~0#1|)) (.cse48 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse44)) (.cse45 (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse49 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|))) (and (not (= (ite (= (mod (+ (* .cse42 4294967295) .cse43 (* .cse44 .cse45)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (let ((.cse46 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* .cse46 .cse44) .cse45) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse47) .cse44) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse44) .cse44) 4294967295) (* (* .cse48 .cse44) 4294967295) (* (* (* .cse46 |c_ULTIMATE.start_main_~n~0#1|) .cse44) 4294967295) (* .cse49 |v_ULTIMATE.start_main_~h~0#1_30|) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse44) .cse45) 4294967295))) 4294967296)) 1 0) 0)) (not (= (ite (= (mod .cse42 4294967296) (mod (+ .cse43 (* .cse45 .cse44)) 4294967296)) 1 0) 0)) (<= |v_ULTIMATE.start_main_~h~0#1_30| 0) (not (= (ite (= (mod (+ (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) .cse45) .cse45) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse44) (* (* .cse50 .cse47) 4294967295) (* .cse49 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse51 .cse47) .cse45) (* (* .cse42 .cse44) 4294967295) (* (* .cse49 .cse45) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse44) .cse45) 4294967295) (* (* .cse44 .cse44) .cse45)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse51 .cse44) .cse45) (* (* .cse50 .cse44) 4294967295) (* (* (* .cse47 .cse44) .cse44) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse47) .cse44) (* (* .cse48 .cse45) 4294967295) (* .cse49 .cse47)) 4294967296) 0) 1 0) 0)) (<= 0 |v_ULTIMATE.start_main_~h~0#1_30|)))))) (and .cse41 .cse27 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse61 (* |v_ULTIMATE.start_main_~h~0#1_30| 4)) (.cse54 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse57 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1))))) (let ((.cse53 (* .cse57 .cse57)) (.cse52 (* |c_ULTIMATE.start_main_~n~0#1| .cse54)) (.cse60 (* .cse61 |c_ULTIMATE.start_main_~n~0#1|)) (.cse58 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse54)) (.cse55 (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse59 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|))) (and (not (= (ite (= (mod (+ (* .cse52 4294967295) .cse53 (* .cse54 .cse55)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (let ((.cse56 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* .cse56 .cse54) .cse55) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse57) .cse54) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse54) .cse54) 4294967295) (* (* .cse58 .cse54) 4294967295) (* (* (* .cse56 |c_ULTIMATE.start_main_~n~0#1|) .cse54) 4294967295) (* .cse59 |v_ULTIMATE.start_main_~h~0#1_30|) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse54) .cse55) 4294967295))) 4294967296)) 1 0) 0)) (not (= (ite (= (mod .cse52 4294967296) (mod (+ .cse53 (* .cse55 .cse54)) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) .cse55) .cse55) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse54) (* (* .cse60 .cse57) 4294967295) (* .cse59 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse61 .cse57) .cse55) (* (* .cse52 .cse54) 4294967295) (* (* .cse59 .cse55) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse54) .cse55) 4294967295) (* (* .cse54 .cse54) .cse55)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse61 .cse54) .cse55) (* (* .cse60 .cse54) 4294967295) (* (* (* .cse57 .cse54) .cse54) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse57) .cse54) (* (* .cse58 .cse55) 4294967295) (* .cse59 .cse57)) 4294967296) 0) 1 0) 0))))))))) (= (+ .cse14 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~p~0#1|))))) (not (= |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 1)) (< .cse12 4294967296)))) .cse62 .cse4 .cse5 .cse6))) (let ((.cse63 (<= c_~counter~0 102))) (or (and .cse7 .cse8 .cse63 .cse9 .cse2 .cse3 .cse10 .cse11 .cse62 .cse4 .cse5 .cse6 (<= 3 c_~counter~0)) (and (<= 0 |c_ULTIMATE.start_main_~h~0#1|) (<= 2 c_~counter~0) .cse7 (<= |c_ULTIMATE.start_main_~p~0#1| 0) .cse1 .cse63 (<= |c_ULTIMATE.start_main_~h~0#1| 0) .cse9 (<= 0 |c_ULTIMATE.start_main_~p~0#1|) .cse2 .cse3 .cse10 .cse11 .cse62 .cse4 .cse5 .cse6))))) is different from false [2021-11-23 02:31:56,174 WARN L227 SmtUtils]: Spent 33.60s on a formula simplification. DAG size of input: 55 DAG size of output: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:33:10,818 WARN L227 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 87 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:07,567 WARN L227 SmtUtils]: Spent 1.70m on a formula simplification. DAG size of input: 117 DAG size of output: 117 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:09,573 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 2 c_~counter~0)) (.cse1 (<= 0 |c_#NULL.base|)) (.cse4 (<= |c_#NULL.offset| 0)) (.cse5 (<= c_~counter~0 101)) (.cse7 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse8 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse10 (<= |c_#NULL.base| 0)) (.cse12 (<= 0 |c_#NULL.offset|)) (.cse13 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse14 (<= 0 |c_#StackHeapBarrier|)) (.cse15 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (and .cse0 .cse1 (let ((.cse17 (* |c_ULTIMATE.start_main_~h~0#1| 4))) (let ((.cse20 (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse16 (* .cse17 |c_ULTIMATE.start_main_~n~0#1|)) (.cse19 (* (* |c_ULTIMATE.start_main_~p~0#1| 4) |c_ULTIMATE.start_main_~q~0#1|)) (.cse18 (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|))) (let ((.cse2 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse3 (not (= 0 (ite (= (mod (let ((.cse21 (* |c_ULTIMATE.start_main_~h~0#1| 12))) (+ (* (* .cse19 |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~p~0#1| 16) |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse21 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* .cse18 |c_ULTIMATE.start_main_~h~0#1|) (* (* (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* .cse21 |c_ULTIMATE.start_main_~n~0#1|) |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~q~0#1|))) 4294967296) 0) 1 0)))) (.cse6 (not (= (ite (= (mod (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) |c_ULTIMATE.start_main_~q~0#1|) (* (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse17 |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* .cse18 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse20 |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* .cse18 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse16 |c_ULTIMATE.start_main_~p~0#1|) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~q~0#1| 4) |c_ULTIMATE.start_main_~r~0#1|) |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0) 0))) (.cse9 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod .cse20 4294967296)) 1 0) 0))) (.cse11 (not (= (ite (= (mod (+ (* (* .cse16 |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* .cse17 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* .cse18 |c_ULTIMATE.start_main_~p~0#1|) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~q~0#1|) (* (* .cse19 |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)))) (or (and (<= 0 |c_ULTIMATE.start_main_~h~0#1|) .cse0 .cse1 .cse2 (<= |c_ULTIMATE.start_main_~p~0#1| 0) .cse3 (<= |c_ULTIMATE.start_main_~h~0#1| 0) .cse4 .cse5 (<= 0 |c_ULTIMATE.start_main_~p~0#1|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (<= 3 c_~counter~0)))))) .cse4 .cse5 .cse7 .cse8 .cse10 .cse12 .cse13 .cse14 .cse15)) is different from false [2021-11-23 02:35:11,585 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 2 c_~counter~0)) (.cse1 (<= 0 |c_#NULL.base|)) (.cse4 (<= |c_#NULL.offset| 0)) (.cse5 (<= c_~counter~0 101)) (.cse7 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse8 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse11 (<= |c_#NULL.base| 0)) (.cse13 (<= 0 |c_#NULL.offset|)) (.cse14 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse15 (<= 0 |c_#StackHeapBarrier|)) (.cse16 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (and .cse0 .cse1 (let ((.cse18 (* |c_ULTIMATE.start_main_~h~0#1| 4))) (let ((.cse22 (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse21 (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse17 (* .cse18 |c_ULTIMATE.start_main_~n~0#1|)) (.cse20 (* (* |c_ULTIMATE.start_main_~p~0#1| 4) |c_ULTIMATE.start_main_~q~0#1|)) (.cse19 (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|))) (let ((.cse2 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse3 (not (= 0 (ite (= (mod (let ((.cse23 (* |c_ULTIMATE.start_main_~h~0#1| 12))) (+ (* (* .cse20 |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~p~0#1| 16) |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse23 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* .cse19 |c_ULTIMATE.start_main_~h~0#1|) (* (* (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* .cse23 |c_ULTIMATE.start_main_~n~0#1|) |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~q~0#1|))) 4294967296) 0) 1 0)))) (.cse6 (not (= (ite (= (mod (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) |c_ULTIMATE.start_main_~q~0#1|) (* (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse18 |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* .cse19 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse21 |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* .cse19 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse17 |c_ULTIMATE.start_main_~p~0#1|) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~q~0#1| 4) |c_ULTIMATE.start_main_~r~0#1|) |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0) 0))) (.cse9 (not (= (ite (= (mod (+ .cse22 (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod .cse21 4294967296)) 1 0) 0))) (.cse10 (not (= (ite (= (mod (+ (* .cse21 4294967295) .cse22 (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0) 0))) (.cse12 (not (= (ite (= (mod (+ (* (* .cse17 |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* .cse18 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* .cse19 |c_ULTIMATE.start_main_~p~0#1|) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~q~0#1|) (* (* .cse20 |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 (<= 3 c_~counter~0)) (and (<= 0 |c_ULTIMATE.start_main_~h~0#1|) .cse0 .cse1 .cse2 (<= |c_ULTIMATE.start_main_~p~0#1| 0) .cse3 (<= |c_ULTIMATE.start_main_~h~0#1| 0) .cse4 .cse5 (<= 0 |c_ULTIMATE.start_main_~p~0#1|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16))))) .cse4 .cse5 .cse7 .cse8 .cse11 .cse13 .cse14 .cse15 .cse16)) is different from false [2021-11-23 02:36:09,679 WARN L227 SmtUtils]: Spent 45.34s on a formula simplification that was a NOOP. DAG size: 265 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:09,680 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2166#(and (<= 2 ~counter~0) (<= 0 |#NULL.base|) (<= ~counter~0 102) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 02:36:09,680 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:36:09,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:36:09,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-11-23 02:36:09,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191969163] [2021-11-23 02:36:09,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:36:09,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:36:09,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:36:09,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=534, Unknown=21, NotChecked=150, Total=812 [2021-11-23 02:36:09,683 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:36:12,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:16,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:19,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:21,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:23,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:25,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:27,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:28,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:29,129 INFO L93 Difference]: Finished difference Result 201 states and 246 transitions. [2021-11-23 02:36:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:36:29,131 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 46 [2021-11-23 02:36:29,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:29,134 INFO L225 Difference]: With dead ends: 201 [2021-11-23 02:36:29,134 INFO L226 Difference]: Without dead ends: 192 [2021-11-23 02:36:29,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 402.2s TimeCoverageRelationStatistics Valid=149, Invalid=772, Unknown=21, NotChecked=180, Total=1122 [2021-11-23 02:36:29,136 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 105 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 79 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:29,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 219 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 126 Invalid, 5 Unknown, 0 Unchecked, 19.3s Time] [2021-11-23 02:36:29,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-23 02:36:29,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 121. [2021-11-23 02:36:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 75 states have internal predecessors, (84), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-23 02:36:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 154 transitions. [2021-11-23 02:36:29,156 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 154 transitions. Word has length 46 [2021-11-23 02:36:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:29,157 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 154 transitions. [2021-11-23 02:36:29,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:36:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 154 transitions. [2021-11-23 02:36:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 02:36:29,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:29,159 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:29,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:36:29,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:29,366 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash -786198320, now seen corresponding path program 1 times [2021-11-23 02:36:29,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:29,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19668874] [2021-11-23 02:36:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:29,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:29,373 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:36:29,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642290132] [2021-11-23 02:36:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:29,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:29,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:36:29,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:36:29,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6163b5-98e6-4ff2-bb2f-135bd6113b2f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process