./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.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_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/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_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/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_d7890755-1191-4f09-a901-318ef0b9dd6d/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 eb7e704db84b45f8c7f1cb386fc610e1107f57c6e67c0a3b2af510d7426cfd4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:38:35,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:38:35,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:38:35,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:38:35,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:38:35,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:38:35,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:38:35,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:38:35,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:38:35,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:38:35,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:38:35,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:38:35,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:38:35,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:38:35,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:38:35,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:38:35,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:38:35,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:38:35,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:38:35,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:38:35,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:38:35,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:38:35,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:38:35,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:38:35,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:38:35,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:38:35,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:38:35,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:38:35,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:38:35,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:38:35,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:38:35,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:38:35,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:38:35,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:38:35,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:38:35,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:38:35,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:38:35,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:38:35,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:38:35,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:38:35,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:38:35,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:38:35,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:38:35,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:38:35,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:38:35,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:38:35,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:38:35,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:38:35,801 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:38:35,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:38:35,802 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:38:35,802 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:38:35,803 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:38:35,803 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:38:35,803 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:38:35,804 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:38:35,804 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:38:35,804 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:38:35,805 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:38:35,805 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:38:35,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:38:35,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:38:35,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:38:35,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:38:35,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:38:35,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:38:35,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:38:35,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:38:35,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:38:35,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:38:35,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:38:35,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:38:35,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:38:35,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:38:35,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:38:35,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:38:35,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:38:35,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:38:35,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:38:35,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:38:35,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:38:35,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:38:35,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:38:35,813 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_d7890755-1191-4f09-a901-318ef0b9dd6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb7e704db84b45f8c7f1cb386fc610e1107f57c6e67c0a3b2af510d7426cfd4f [2021-11-23 02:38:36,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:38:36,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:38:36,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:38:36,236 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:38:36,237 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:38:36,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c [2021-11-23 02:38:36,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/data/afc1a2e66/fd753b418aaa4da497005bde46f8063e/FLAG8ee60fc9c [2021-11-23 02:38:36,856 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:38:36,856 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c [2021-11-23 02:38:36,864 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/data/afc1a2e66/fd753b418aaa4da497005bde46f8063e/FLAG8ee60fc9c [2021-11-23 02:38:37,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/data/afc1a2e66/fd753b418aaa4da497005bde46f8063e [2021-11-23 02:38:37,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:38:37,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:38:37,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:38:37,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:38:37,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:38:37,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716ae0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37, skipping insertion in model container [2021-11-23 02:38:37,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:38:37,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:38:37,561 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_d7890755-1191-4f09-a901-318ef0b9dd6d/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c[525,538] [2021-11-23 02:38:37,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:38:37,645 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:38:37,668 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_d7890755-1191-4f09-a901-318ef0b9dd6d/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c[525,538] [2021-11-23 02:38:37,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:38:37,733 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:38:37,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37 WrapperNode [2021-11-23 02:38:37,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:38:37,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:38:37,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:38:37,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:38:37,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,812 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2021-11-23 02:38:37,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:38:37,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:38:37,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:38:37,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:38:37,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:38:37,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:38:37,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:38:37,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:38:37,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (1/1) ... [2021-11-23 02:38:37,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:38:37,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:38:37,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:38:37,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:38:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:38:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:38:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:38:37,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:38:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:38:37,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:38:38,027 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:38:38,030 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:38:38,214 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:38:38,249 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:38:38,250 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:38:38,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:38 BoogieIcfgContainer [2021-11-23 02:38:38,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:38:38,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:38:38,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:38:38,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:38:38,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:38:37" (1/3) ... [2021-11-23 02:38:38,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e462e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:38, skipping insertion in model container [2021-11-23 02:38:38,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:37" (2/3) ... [2021-11-23 02:38:38,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e462e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:38, skipping insertion in model container [2021-11-23 02:38:38,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:38" (3/3) ... [2021-11-23 02:38:38,269 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound5.c [2021-11-23 02:38:38,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:38:38,276 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:38:38,332 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:38:38,342 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 02:38:38,342 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:38:38,363 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 02:38:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:38:38,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:38,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:38,370 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash -678335095, now seen corresponding path program 1 times [2021-11-23 02:38:38,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:38,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520324777] [2021-11-23 02:38:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:38,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:38,532 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 02:38:38,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:38,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520324777] [2021-11-23 02:38:38,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520324777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:38,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:38:38,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:38:38,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925346695] [2021-11-23 02:38:38,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:38,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:38:38,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:38,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:38:38,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:38:38,575 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 02:38:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:38,655 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2021-11-23 02:38:38,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:38:38,659 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 02:38:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:38,668 INFO L225 Difference]: With dead ends: 44 [2021-11-23 02:38:38,682 INFO L226 Difference]: Without dead ends: 22 [2021-11-23 02:38:38,686 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 02:38:38,691 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:38:38,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:38:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-23 02:38:38,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-23 02:38:38,750 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 02:38:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2021-11-23 02:38:38,754 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 7 [2021-11-23 02:38:38,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:38,754 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2021-11-23 02:38:38,755 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 02:38:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2021-11-23 02:38:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:38:38,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:38,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:38,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:38:38,757 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:38,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash 520368722, now seen corresponding path program 1 times [2021-11-23 02:38:38,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:38,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789978964] [2021-11-23 02:38:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:38,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:38,858 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 02:38:38,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:38,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789978964] [2021-11-23 02:38:38,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789978964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:38,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:38:38,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:38:38,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620095513] [2021-11-23 02:38:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:38,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:38:38,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:38:38,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:38:38,864 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 02:38:38,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:38,919 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2021-11-23 02:38:38,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:38:38,920 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 02:38:38,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:38,922 INFO L225 Difference]: With dead ends: 42 [2021-11-23 02:38:38,922 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 02:38:38,923 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 02:38:38,925 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 02:38:38,926 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 02:38:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 02:38:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-23 02:38:38,935 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 02:38:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-11-23 02:38:38,938 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 9 [2021-11-23 02:38:38,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:38,938 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-11-23 02:38:38,939 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 02:38:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2021-11-23 02:38:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:38:38,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:38,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:38,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:38:38,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:38,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1389535714, now seen corresponding path program 1 times [2021-11-23 02:38:38,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:38,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823443164] [2021-11-23 02:38:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:38,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:38,964 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:38:38,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354976375] [2021-11-23 02:38:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:38,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:38:38,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:38:38,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:38:38,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:38:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:39,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:38:39,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:38:39,160 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 02:38:39,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:38:39,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:39,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823443164] [2021-11-23 02:38:39,162 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:38:39,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354976375] [2021-11-23 02:38:39,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354976375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:39,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:38:39,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:38:39,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194850819] [2021-11-23 02:38:39,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:39,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:38:39,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:39,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:38:39,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:38:39,166 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 02:38:41,235 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 02:38:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:41,236 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2021-11-23 02:38:41,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:38:41,350 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 02:38:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:41,352 INFO L225 Difference]: With dead ends: 37 [2021-11-23 02:38:41,352 INFO L226 Difference]: Without dead ends: 28 [2021-11-23 02:38:41,353 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 02:38:41,355 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 02:38:41,356 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 02:38:41,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-23 02:38:41,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-11-23 02:38:41,366 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 02:38:41,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-11-23 02:38:41,368 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 10 [2021-11-23 02:38:41,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:41,369 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-11-23 02:38:41,369 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 02:38:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2021-11-23 02:38:41,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:38:41,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:41,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:41,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:38:41,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-23 02:38:41,587 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:41,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1388046164, now seen corresponding path program 1 times [2021-11-23 02:38:41,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:41,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273754268] [2021-11-23 02:38:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:41,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:41,896 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 02:38:41,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:41,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273754268] [2021-11-23 02:38:41,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273754268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:41,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:38:41,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:38:41,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694118991] [2021-11-23 02:38:41,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:41,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:38:41,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:41,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:38:41,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:38:41,901 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 02:38:44,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:46,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:46,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:46,543 INFO L93 Difference]: Finished difference Result 59 states and 89 transitions. [2021-11-23 02:38:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:38:46,547 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 02:38:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:46,548 INFO L225 Difference]: With dead ends: 59 [2021-11-23 02:38:46,549 INFO L226 Difference]: Without dead ends: 39 [2021-11-23 02:38:46,550 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 02:38:46,552 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:38:46,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 157 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 60 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 02:38:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-23 02:38:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-23 02:38:46,598 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 02:38:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2021-11-23 02:38:46,601 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 10 [2021-11-23 02:38:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:46,601 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2021-11-23 02:38:46,602 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 02:38:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2021-11-23 02:38:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:38:46,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:46,603 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:46,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:38:46,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1970023331, now seen corresponding path program 1 times [2021-11-23 02:38:46,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:46,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853149565] [2021-11-23 02:38:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:46,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:46,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:38:46,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335152843] [2021-11-23 02:38:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:46,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:38:46,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:38:46,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:38:46,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:38:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:46,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:38:46,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:38:46,767 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 02:38:46,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:38:46,874 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 02:38:46,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:46,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853149565] [2021-11-23 02:38:46,875 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:38:46,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335152843] [2021-11-23 02:38:46,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335152843] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:38:46,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2049038249] [2021-11-23 02:38:46,918 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:38:46,918 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:38:46,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:38:46,931 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:38:46,932 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:38:47,460 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 14 for LOIs [2021-11-23 02:38:47,472 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:38:47,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2049038249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:47,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:38:47,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4] total 15 [2021-11-23 02:38:47,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455452254] [2021-11-23 02:38:47,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:47,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:38:47,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:47,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:38:47,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:38:47,931 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 02:38:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:48,405 INFO L93 Difference]: Finished difference Result 78 states and 117 transitions. [2021-11-23 02:38:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:38:48,408 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 02:38:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:48,411 INFO L225 Difference]: With dead ends: 78 [2021-11-23 02:38:48,412 INFO L226 Difference]: Without dead ends: 59 [2021-11-23 02:38:48,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:38:48,415 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:38:48,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 100 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:38:48,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-23 02:38:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2021-11-23 02:38:48,437 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 02:38:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2021-11-23 02:38:48,447 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 12 [2021-11-23 02:38:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:48,447 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2021-11-23 02:38:48,448 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 02:38:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2021-11-23 02:38:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:38:48,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:48,450 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:48,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:38:48,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:38:48,667 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:48,667 INFO L85 PathProgramCache]: Analyzing trace with hash 600084205, now seen corresponding path program 1 times [2021-11-23 02:38:48,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:48,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017876280] [2021-11-23 02:38:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:48,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:48,689 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:38:48,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014576337] [2021-11-23 02:38:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:48,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:38:48,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:38:48,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:38:48,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:38:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:48,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:38:48,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:38:48,863 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 02:38:48,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:38:48,961 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 02:38:48,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:48,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017876280] [2021-11-23 02:38:48,962 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:38:48,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014576337] [2021-11-23 02:38:48,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014576337] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:38:48,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2050879572] [2021-11-23 02:38:48,966 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:38:48,966 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:38:48,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:38:48,967 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:38:48,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:38:49,264 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 16 for LOIs [2021-11-23 02:38:49,274 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:38:49,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2050879572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:49,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:38:49,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 5] total 16 [2021-11-23 02:38:49,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647527576] [2021-11-23 02:38:49,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:49,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:38:49,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:49,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:38:49,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:38:49,735 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 02:38:51,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:51,676 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2021-11-23 02:38:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:38:51,677 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 02:38:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:51,679 INFO L225 Difference]: With dead ends: 68 [2021-11-23 02:38:51,679 INFO L226 Difference]: Without dead ends: 65 [2021-11-23 02:38:51,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:38:51,681 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 10 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:38:51,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 91 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 02:38:51,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-23 02:38:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2021-11-23 02:38:51,696 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 02:38:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2021-11-23 02:38:51,697 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 13 [2021-11-23 02:38:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:51,698 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2021-11-23 02:38:51,698 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 02:38:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2021-11-23 02:38:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:38:51,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:51,700 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:51,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:38:51,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:38:51,915 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:51,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:51,915 INFO L85 PathProgramCache]: Analyzing trace with hash 601573755, now seen corresponding path program 1 times [2021-11-23 02:38:51,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:51,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681820306] [2021-11-23 02:38:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:51,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:52,230 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 02:38:52,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:52,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681820306] [2021-11-23 02:38:52,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681820306] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:38:52,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75165519] [2021-11-23 02:38:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:52,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:38:52,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:38:52,234 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:38:52,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:38:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:52,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:38:52,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:38:52,522 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 02:38:52,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:38:52,777 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 02:38:52,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75165519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:38:52,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [449949277] [2021-11-23 02:38:52,781 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:38:52,781 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:38:52,781 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:38:52,782 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:38:52,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:38:53,055 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2021-11-23 02:38:53,110 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:38:53,893 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1142#(and (<= 2 ~counter~0) (< ~counter~0 6) (= |__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 02:38:53,893 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:38:53,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:38:53,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-11-23 02:38:53,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868239802] [2021-11-23 02:38:53,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:38:53,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:38:53,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:53,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:38:53,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:38:53,896 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 02:38:58,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:39:01,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:39:03,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:39:05,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:39:07,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:39:10,693 WARN L534 Checker$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 02:39:12,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:39:15,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:39:17,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:39:19,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:39:19,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:39:19,565 INFO L93 Difference]: Finished difference Result 92 states and 133 transitions. [2021-11-23 02:39:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:39:19,566 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 02:39:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:39:19,567 INFO L225 Difference]: With dead ends: 92 [2021-11-23 02:39:19,567 INFO L226 Difference]: Without dead ends: 65 [2021-11-23 02:39:19,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-11-23 02:39:19,570 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 42 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 109 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:39:19,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 303 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 184 Invalid, 10 Unknown, 0 Unchecked, 25.5s Time] [2021-11-23 02:39:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-23 02:39:19,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-11-23 02:39:19,586 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 02:39:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 93 transitions. [2021-11-23 02:39:19,588 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 93 transitions. Word has length 13 [2021-11-23 02:39:19,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:19,589 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 93 transitions. [2021-11-23 02:39:19,589 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 02:39:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 93 transitions. [2021-11-23 02:39:19,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:39:19,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:39:19,591 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:39:19,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:39:19,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:19,792 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:39:19,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:39:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash -339513844, now seen corresponding path program 1 times [2021-11-23 02:39:19,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:39:19,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965287101] [2021-11-23 02:39:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:19,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:19,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:39:19,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910888279] [2021-11-23 02:39:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:19,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:19,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:39:19,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:39:19,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:39:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:19,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:39:19,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:39:20,100 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 02:39:20,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:39:20,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:20,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965287101] [2021-11-23 02:39:20,100 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:39:20,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910888279] [2021-11-23 02:39:20,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910888279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:39:20,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:39:20,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:39:20,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528805211] [2021-11-23 02:39:20,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:39:20,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:39:20,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:39:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:39:20,103 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 02:39:21,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:39:21,047 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-11-23 02:39:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:39:21,049 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 02:39:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:39:21,050 INFO L225 Difference]: With dead ends: 75 [2021-11-23 02:39:21,050 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 02:39:21,051 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 02:39:21,052 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:39:21,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 109 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:39:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 02:39:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-23 02:39:21,062 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 02:39:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 74 transitions. [2021-11-23 02:39:21,078 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 74 transitions. Word has length 20 [2021-11-23 02:39:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:21,078 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 74 transitions. [2021-11-23 02:39:21,078 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 02:39:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 74 transitions. [2021-11-23 02:39:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:39:21,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:39:21,081 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 02:39:21,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:39:21,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:21,286 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:39:21,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:39:21,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1744099301, now seen corresponding path program 1 times [2021-11-23 02:39:21,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:39:21,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341630595] [2021-11-23 02:39:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:21,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:21,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:39:21,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694429545] [2021-11-23 02:39:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:21,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:21,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:39:21,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:39:21,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:39:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:21,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:39:21,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:39:21,525 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 02:39:21,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:39:21,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:21,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341630595] [2021-11-23 02:39:21,525 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:39:21,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694429545] [2021-11-23 02:39:21,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694429545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:39:21,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:39:21,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:39:21,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184556401] [2021-11-23 02:39:21,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:39:21,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:39:21,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:39:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:39:21,527 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 02:39:22,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:39:22,362 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-11-23 02:39:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:39:22,363 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 02:39:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:39:22,364 INFO L225 Difference]: With dead ends: 61 [2021-11-23 02:39:22,364 INFO L226 Difference]: Without dead ends: 58 [2021-11-23 02:39:22,365 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 02:39:22,366 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:39:22,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 120 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 02:39:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-23 02:39:22,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2021-11-23 02:39:22,377 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 02:39:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2021-11-23 02:39:22,383 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 23 [2021-11-23 02:39:22,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:22,384 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2021-11-23 02:39:22,384 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 02:39:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2021-11-23 02:39:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 02:39:22,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:39:22,388 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 02:39:22,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:39:22,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 02:39:22,592 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:39:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:39:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash -787687870, now seen corresponding path program 1 times [2021-11-23 02:39:22,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:39:22,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107466711] [2021-11-23 02:39:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:22,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:22,599 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:39:22,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44762053] [2021-11-23 02:39:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:22,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:22,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:39:22,614 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:39:22,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:39:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:22,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:39:22,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:39:22,876 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 02:39:22,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:39:23,053 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 02:39:23,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:23,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107466711] [2021-11-23 02:39:23,054 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:39:23,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44762053] [2021-11-23 02:39:23,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44762053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:39:23,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1917997080] [2021-11-23 02:39:23,058 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-23 02:39:23,058 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:39:23,059 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:39:23,059 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:39:23,059 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:42:44,584 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2021-11-23 02:42:44,693 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:42:47,080 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (<= 2 c_~counter~0)) (.cse7 (<= c_~counter~0 6)) (.cse8 (<= 0 |c_#NULL.base|)) (.cse59 (<= |c_#NULL.offset| 0)) (.cse0 (<= 1 c_~counter~0)) (.cse1 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse2 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse60 (<= |c_#NULL.base| 0)) (.cse61 (<= 0 |c_#NULL.offset|)) (.cse3 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse4 (<= 0 |c_#StackHeapBarrier|)) (.cse5 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (and (or (and (= |c_ULTIMATE.start_main_~p~0#1| 0) (< c_~counter~0 6) (= |c_ULTIMATE.start_main_~h~0#1| 0) .cse0 .cse1 .cse2 (= |c_#NULL.offset| 0) (< (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296) (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) .cse3 .cse4 .cse5 (= |c_#NULL.base| 0)) (and .cse6 .cse7 .cse8 (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 ((.cse10 (* 4 |c_ULTIMATE.start_main_~q~0#1|)) (.cse9 (+ (* 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 (< .cse9 (+ .cse10 4)) (<= 0 .cse9) (let ((.cse38 (div (mod (+ (* |c_ULTIMATE.start_main_~q~0#1| 4294967295) |c_ULTIMATE.start_main_~h~0#1|) 4294967296) 2)) (.cse25 (<= |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~h~0#1|)) (.cse26 (<= |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse24 (<= 3 c_~counter~0)) (.cse37 (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)) (.cse11 (mod |c_ULTIMATE.start_main_~h~0#1| 4294967296))) (or (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) 4294967296))) (and (<= .cse11 .cse12) (let ((.cse13 (not (= (ite (< .cse12 .cse37) 1 0) 0)))) (or (and .cse13 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse23 (* |v_ULTIMATE.start_main_~h~0#1_30| 4)) (.cse16 (+ (* |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|)) (.cse19 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1))))) (let ((.cse15 (* .cse19 .cse19)) (.cse14 (* |c_ULTIMATE.start_main_~n~0#1| .cse16)) (.cse22 (* .cse23 |c_ULTIMATE.start_main_~n~0#1|)) (.cse20 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse16)) (.cse17 (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse21 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|))) (and (not (= (ite (= (mod (+ (* .cse14 4294967295) .cse15 (* .cse16 .cse17)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (let ((.cse18 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* .cse18 .cse16) .cse17) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse19) .cse16) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse16) .cse16) 4294967295) (* (* .cse20 .cse16) 4294967295) (* (* (* .cse18 |c_ULTIMATE.start_main_~n~0#1|) .cse16) 4294967295) (* .cse21 |v_ULTIMATE.start_main_~h~0#1_30|) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse16) .cse17) 4294967295))) 4294967296)) 1 0) 0)) (not (= (ite (= (mod .cse14 4294967296) (mod (+ .cse15 (* .cse17 .cse16)) 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)) .cse17) .cse17) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse16) (* (* .cse22 .cse19) 4294967295) (* .cse21 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse23 .cse19) .cse17) (* (* .cse14 .cse16) 4294967295) (* (* .cse21 .cse17) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse16) .cse17) 4294967295) (* (* .cse16 .cse16) .cse17)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse23 .cse16) .cse17) (* (* .cse22 .cse16) 4294967295) (* (* (* .cse19 .cse16) .cse16) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse19) .cse16) (* (* .cse20 .cse17) 4294967295) (* .cse21 .cse19)) 4294967296) 0) 1 0) 0)))))) .cse24) (and .cse25 .cse13 .cse26 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse36 (* |v_ULTIMATE.start_main_~h~0#1_30| 4)) (.cse29 (+ (* |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|)) (.cse32 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1))))) (let ((.cse28 (* .cse32 .cse32)) (.cse27 (* |c_ULTIMATE.start_main_~n~0#1| .cse29)) (.cse35 (* .cse36 |c_ULTIMATE.start_main_~n~0#1|)) (.cse33 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse29)) (.cse30 (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse34 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|))) (and (not (= (ite (= (mod (+ (* .cse27 4294967295) .cse28 (* .cse29 .cse30)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (let ((.cse31 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* .cse31 .cse29) .cse30) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse32) .cse29) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse29) .cse29) 4294967295) (* (* .cse33 .cse29) 4294967295) (* (* (* .cse31 |c_ULTIMATE.start_main_~n~0#1|) .cse29) 4294967295) (* .cse34 |v_ULTIMATE.start_main_~h~0#1_30|) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse29) .cse30) 4294967295))) 4294967296)) 1 0) 0)) (not (= (ite (= (mod .cse27 4294967296) (mod (+ .cse28 (* .cse30 .cse29)) 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)) .cse30) .cse30) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse29) (* (* .cse35 .cse32) 4294967295) (* .cse34 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse36 .cse32) .cse30) (* (* .cse27 .cse29) 4294967295) (* (* .cse34 .cse30) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse29) .cse30) 4294967295) (* (* .cse29 .cse29) .cse30)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse36 .cse29) .cse30) (* (* .cse35 .cse29) 4294967295) (* (* (* .cse32 .cse29) .cse29) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse32) .cse29) (* (* .cse33 .cse30) 4294967295) (* .cse34 .cse32)) 4294967296) 0) 1 0) 0)) (<= 0 |v_ULTIMATE.start_main_~h~0#1_30|)))))))) (= (+ .cse38 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~p~0#1|))) (let ((.cse58 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (and (= .cse38 |c_ULTIMATE.start_main_~p~0#1|) (let ((.cse48 (not (= (ite (< .cse58 .cse37) 1 0) 0)))) (or (and .cse25 .cse26 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse42 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1)))) (.cse40 (+ (* |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|)) (.cse39 (* |v_ULTIMATE.start_main_~h~0#1_30| 4))) (let ((.cse41 (* .cse39 |c_ULTIMATE.start_main_~n~0#1|)) (.cse43 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse40)) (.cse44 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|)) (.cse45 (* |c_ULTIMATE.start_main_~n~0#1| .cse40)) (.cse46 (* .cse42 .cse42))) (and (not (= (ite (= (mod (+ (* (* .cse39 .cse40) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse41 .cse40) 4294967295) (* (* (* .cse42 .cse40) .cse40) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse42) .cse40) (* (* .cse43 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* .cse44 .cse42)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse39 .cse42) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse44 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse40) (* (* .cse40 .cse40) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse41 .cse42) 4294967295) (* .cse44 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse45 .cse40) 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) .cse40) |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)) (not (= 0 (ite (= (mod (+ (* .cse45 4294967295) .cse46 (* .cse40 |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0))) (not (= (ite (= (mod (let ((.cse47 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse42) .cse40) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse40) .cse40) 4294967295) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse40) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse43 .cse40) 4294967295) (* (* (* .cse47 |c_ULTIMATE.start_main_~n~0#1|) .cse40) 4294967295) (* (* .cse47 .cse40) |c_ULTIMATE.start_main_~r~0#1|) (* .cse44 |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 .cse45 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~r~0#1| .cse40) .cse46) 4294967296)) 1 0) 0)) (<= 0 |v_ULTIMATE.start_main_~h~0#1_30|))))) .cse48) (and (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse52 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1)))) (.cse50 (+ (* |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|)) (.cse49 (* |v_ULTIMATE.start_main_~h~0#1_30| 4))) (let ((.cse51 (* .cse49 |c_ULTIMATE.start_main_~n~0#1|)) (.cse53 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse50)) (.cse54 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|)) (.cse55 (* |c_ULTIMATE.start_main_~n~0#1| .cse50)) (.cse56 (* .cse52 .cse52))) (and (not (= (ite (= (mod (+ (* (* .cse49 .cse50) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse51 .cse50) 4294967295) (* (* (* .cse52 .cse50) .cse50) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse52) .cse50) (* (* .cse53 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* .cse54 .cse52)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse49 .cse52) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse54 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse50) (* (* .cse50 .cse50) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse51 .cse52) 4294967295) (* .cse54 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse55 .cse50) 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) .cse50) |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)) (not (= 0 (ite (= (mod (+ (* .cse55 4294967295) .cse56 (* .cse50 |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0))) (not (= (ite (= (mod (let ((.cse57 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse52) .cse50) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse50) .cse50) 4294967295) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse50) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse53 .cse50) 4294967295) (* (* (* .cse57 |c_ULTIMATE.start_main_~n~0#1|) .cse50) 4294967295) (* (* .cse57 .cse50) |c_ULTIMATE.start_main_~r~0#1|) (* .cse54 |v_ULTIMATE.start_main_~h~0#1_30|))) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod .cse55 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~r~0#1| .cse50) .cse56) 4294967296)) 1 0) 0)))))) .cse48 .cse24))) (< .cse58 .cse11))))) (<= .cse10 .cse9) (<= 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) (not (= |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 1)) (< .cse9 4294967296)))) .cse59 .cse1 .cse2 .cse60 .cse61 .cse3 .cse4 .cse5)) (or (and .cse6 .cse7 .cse8 .cse59 .cse1 .cse2 .cse60 .cse61 .cse3 .cse4 .cse5) (and (<= 0 |c_ULTIMATE.start_main_~h~0#1|) .cse7 .cse8 (<= |c_ULTIMATE.start_main_~p~0#1| 0) (<= |c_ULTIMATE.start_main_~h~0#1| 0) .cse59 (<= 0 |c_ULTIMATE.start_main_~p~0#1|) .cse0 .cse1 .cse2 .cse60 .cse61 .cse3 .cse4 .cse5)))) is different from false [2021-11-23 02:44:20,331 WARN L227 SmtUtils]: Spent 1.48m on a formula simplification. DAG size of input: 282 DAG size of output: 270 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:17,591 WARN L227 SmtUtils]: Spent 50.70s on a formula simplification. DAG size of input: 55 DAG size of output: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:46:35,292 WARN L227 SmtUtils]: Spent 1.10m 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 02:48:45,802 WARN L227 SmtUtils]: Spent 1.96m 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 02:51:05,101 WARN L227 SmtUtils]: Spent 1.91m on a formula simplification. DAG size of input: 136 DAG size of output: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:51:24,122 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 6 c_~counter~0)) (.cse1 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse2 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse3 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse4 (<= 0 |c_#StackHeapBarrier|)) (.cse5 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and (= |c_ULTIMATE.start_main_~p~0#1| 0) (< c_~counter~0 7) .cse0 (= |c_ULTIMATE.start_main_~h~0#1| 0) .cse1 .cse2 (= |c_#NULL.offset| 0) (< (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296) (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) .cse3 .cse4 .cse5 (= |c_#NULL.base| 0)) (and (<= 0 |c_#NULL.base|) (<= |c_#NULL.offset| 0) .cse0 .cse1 .cse2 (<= |c_#NULL.base| 0) (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 ((.cse7 (* 4 |c_ULTIMATE.start_main_~q~0#1|)) (.cse6 (+ (* 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 (< .cse6 (+ .cse7 4)) (<= 0 .cse6) (<= .cse7 .cse6) (<= 0 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|) (let ((.cse32 (mod |c_ULTIMATE.start_main_~h~0#1| 4294967296)) (.cse18 (<= |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~h~0#1|)) (.cse19 (<= |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse30 (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)) (.cse31 (div (mod (+ (* |c_ULTIMATE.start_main_~q~0#1| 4294967295) |c_ULTIMATE.start_main_~h~0#1|) 4294967296) 2))) (or (let ((.cse29 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (and (let ((.cse17 (not (= (ite (< .cse29 .cse30) 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 ((.cse11 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1)))) (.cse9 (+ (* |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|)) (.cse8 (* |v_ULTIMATE.start_main_~h~0#1_30| 4))) (let ((.cse10 (* .cse8 |c_ULTIMATE.start_main_~n~0#1|)) (.cse12 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse9)) (.cse13 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|)) (.cse14 (* |c_ULTIMATE.start_main_~n~0#1| .cse9)) (.cse15 (* .cse11 .cse11))) (and (not (= (ite (= (mod (+ (* (* .cse8 .cse9) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse10 .cse9) 4294967295) (* (* (* .cse11 .cse9) .cse9) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse11) .cse9) (* (* .cse12 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* .cse13 .cse11)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse8 .cse11) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse13 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse9) (* (* .cse9 .cse9) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse10 .cse11) 4294967295) (* .cse13 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse14 .cse9) 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) .cse9) |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)) (not (= 0 (ite (= (mod (+ (* .cse14 4294967295) .cse15 (* .cse9 |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0))) (not (= (ite (= (mod (let ((.cse16 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse11) .cse9) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse9) .cse9) 4294967295) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse9) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse12 .cse9) 4294967295) (* (* (* .cse16 |c_ULTIMATE.start_main_~n~0#1|) .cse9) 4294967295) (* (* .cse16 .cse9) |c_ULTIMATE.start_main_~r~0#1|) (* .cse13 |v_ULTIMATE.start_main_~h~0#1_30|))) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod .cse14 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~r~0#1| .cse9) .cse15) 4294967296)) 1 0) 0)))))) .cse17) (and .cse18 .cse19 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse23 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1)))) (.cse21 (+ (* |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|)) (.cse20 (* |v_ULTIMATE.start_main_~h~0#1_30| 4))) (let ((.cse22 (* .cse20 |c_ULTIMATE.start_main_~n~0#1|)) (.cse24 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse21)) (.cse25 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|)) (.cse26 (* |c_ULTIMATE.start_main_~n~0#1| .cse21)) (.cse27 (* .cse23 .cse23))) (and (not (= (ite (= (mod (+ (* (* .cse20 .cse21) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse22 .cse21) 4294967295) (* (* (* .cse23 .cse21) .cse21) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse23) .cse21) (* (* .cse24 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* .cse25 .cse23)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse20 .cse23) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse25 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse21) (* (* .cse21 .cse21) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse22 .cse23) 4294967295) (* .cse25 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse26 .cse21) 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) .cse21) |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)) (not (= 0 (ite (= (mod (+ (* .cse26 4294967295) .cse27 (* .cse21 |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0))) (not (= (ite (= (mod (let ((.cse28 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse23) .cse21) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse21) .cse21) 4294967295) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse21) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse24 .cse21) 4294967295) (* (* (* .cse28 |c_ULTIMATE.start_main_~n~0#1|) .cse21) 4294967295) (* (* .cse28 .cse21) |c_ULTIMATE.start_main_~r~0#1|) (* .cse25 |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 .cse26 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~r~0#1| .cse21) .cse27) 4294967296)) 1 0) 0)) (<= 0 |v_ULTIMATE.start_main_~h~0#1_30|))))) .cse17))) (= .cse31 |c_ULTIMATE.start_main_~p~0#1|) (< .cse29 .cse32))) (let ((.cse33 (mod (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) 4294967296))) (and (<= .cse32 .cse33) (let ((.cse34 (not (= (ite (< .cse33 .cse30) 1 0) 0)))) (or (and .cse18 .cse34 .cse19 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse44 (* |v_ULTIMATE.start_main_~h~0#1_30| 4)) (.cse37 (+ (* |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|)) (.cse40 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1))))) (let ((.cse36 (* .cse40 .cse40)) (.cse35 (* |c_ULTIMATE.start_main_~n~0#1| .cse37)) (.cse43 (* .cse44 |c_ULTIMATE.start_main_~n~0#1|)) (.cse41 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse37)) (.cse38 (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse42 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|))) (and (not (= (ite (= (mod (+ (* .cse35 4294967295) .cse36 (* .cse37 .cse38)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (let ((.cse39 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* .cse39 .cse37) .cse38) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse40) .cse37) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse37) .cse37) 4294967295) (* (* .cse41 .cse37) 4294967295) (* (* (* .cse39 |c_ULTIMATE.start_main_~n~0#1|) .cse37) 4294967295) (* .cse42 |v_ULTIMATE.start_main_~h~0#1_30|) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse37) .cse38) 4294967295))) 4294967296)) 1 0) 0)) (not (= (ite (= (mod .cse35 4294967296) (mod (+ .cse36 (* .cse38 .cse37)) 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)) .cse38) .cse38) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse37) (* (* .cse43 .cse40) 4294967295) (* .cse42 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse44 .cse40) .cse38) (* (* .cse35 .cse37) 4294967295) (* (* .cse42 .cse38) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse37) .cse38) 4294967295) (* (* .cse37 .cse37) .cse38)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse44 .cse37) .cse38) (* (* .cse43 .cse37) 4294967295) (* (* (* .cse40 .cse37) .cse37) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse40) .cse37) (* (* .cse41 .cse38) 4294967295) (* .cse42 .cse40)) 4294967296) 0) 1 0) 0)) (<= 0 |v_ULTIMATE.start_main_~h~0#1_30|)))))) (and .cse34 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse54 (* |v_ULTIMATE.start_main_~h~0#1_30| 4)) (.cse47 (+ (* |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|)) (.cse50 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1))))) (let ((.cse46 (* .cse50 .cse50)) (.cse45 (* |c_ULTIMATE.start_main_~n~0#1| .cse47)) (.cse53 (* .cse54 |c_ULTIMATE.start_main_~n~0#1|)) (.cse51 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse47)) (.cse48 (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse52 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|))) (and (not (= (ite (= (mod (+ (* .cse45 4294967295) .cse46 (* .cse47 .cse48)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (let ((.cse49 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* .cse49 .cse47) .cse48) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse50) .cse47) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse47) .cse47) 4294967295) (* (* .cse51 .cse47) 4294967295) (* (* (* .cse49 |c_ULTIMATE.start_main_~n~0#1|) .cse47) 4294967295) (* .cse52 |v_ULTIMATE.start_main_~h~0#1_30|) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse47) .cse48) 4294967295))) 4294967296)) 1 0) 0)) (not (= (ite (= (mod .cse45 4294967296) (mod (+ .cse46 (* .cse48 .cse47)) 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)) .cse48) .cse48) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse47) (* (* .cse53 .cse50) 4294967295) (* .cse52 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse54 .cse50) .cse48) (* (* .cse45 .cse47) 4294967295) (* (* .cse52 .cse48) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse47) .cse48) 4294967295) (* (* .cse47 .cse47) .cse48)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse54 .cse47) .cse48) (* (* .cse53 .cse47) 4294967295) (* (* (* .cse50 .cse47) .cse47) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse50) .cse47) (* (* .cse51 .cse48) 4294967295) (* .cse52 .cse50)) 4294967296) 0) 1 0) 0))))))))) (= (+ .cse31 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~p~0#1|))))) (< |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) (not (= |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 1)) (< .cse6 4294967296)))) (<= c_~counter~0 7) (<= 0 |c_#NULL.offset|) .cse3 .cse4 .cse5))) is different from false [2021-11-23 02:51:24,140 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2162#(and (<= 2 ~counter~0) (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= ~counter~0 7) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 02:51:24,141 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:51:24,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:51:24,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2021-11-23 02:51:24,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966024422] [2021-11-23 02:51:24,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:51:24,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:51:24,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:24,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:51:24,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=405, Unknown=22, NotChecked=86, Total=600 [2021-11-23 02:51:24,144 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 02:51:26,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:51:29,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:51:33,610 WARN L534 Checker$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 02:51:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:36,211 INFO L93 Difference]: Finished difference Result 129 states and 162 transitions. [2021-11-23 02:51:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:51:36,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 02:51:36,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:36,214 INFO L225 Difference]: With dead ends: 129 [2021-11-23 02:51:36,214 INFO L226 Difference]: Without dead ends: 120 [2021-11-23 02:51:36,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 519.6s TimeCoverageRelationStatistics Valid=99, Invalid=487, Unknown=22, NotChecked=94, Total=702 [2021-11-23 02:51:36,216 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 31 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:36,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 225 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 95 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2021-11-23 02:51:36,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-23 02:51:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2021-11-23 02:51:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 64 states have (on average 1.125) internal successors, (72), 66 states have internal predecessors, (72), 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 02:51:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 142 transitions. [2021-11-23 02:51:36,233 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 142 transitions. Word has length 46 [2021-11-23 02:51:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:36,234 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 142 transitions. [2021-11-23 02:51:36,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 02:51:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2021-11-23 02:51:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 02:51:36,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:36,237 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 02:51:36,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:51:36,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:51:36,451 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:36,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash -786198320, now seen corresponding path program 1 times [2021-11-23 02:51:36,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:36,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753363900] [2021-11-23 02:51:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:36,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:36,461 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:51:36,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016384486] [2021-11-23 02:51:36,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:36,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:51:36,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:51:36,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:51:36,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7890755-1191-4f09-a901-318ef0b9dd6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process