./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P --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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:45:06,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:45:06,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:45:06,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:45:06,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:45:06,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:45:06,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:45:06,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:45:06,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:45:06,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:45:06,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:45:06,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:45:06,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:45:06,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:45:06,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:45:06,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:45:06,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:45:06,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:45:06,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:45:06,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:45:06,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:45:06,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:45:06,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:45:06,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:45:06,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:45:06,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:45:06,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:45:06,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:45:06,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:45:06,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:45:06,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:45:06,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:45:06,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:45:06,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:45:06,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:45:06,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:45:06,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:45:06,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:45:06,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:45:06,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:45:06,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:45:06,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 22:45:06,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:45:06,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:45:06,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:45:06,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:45:06,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:45:06,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:45:06,788 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:45:06,788 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:45:06,788 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:45:06,788 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:45:06,789 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:45:06,790 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:45:06,790 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:45:06,790 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:45:06,790 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:45:06,791 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:45:06,791 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:45:06,791 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:45:06,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:45:06,792 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 22:45:06,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:45:06,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 22:45:06,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:45:06,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 22:45:06,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:45:06,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 22:45:06,795 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 22:45:06,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 22:45:06,795 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:45:06,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 22:45:06,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:45:06,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:45:06,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:45:06,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:45:06,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:45:06,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 22:45:06,797 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:45:06,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:45:06,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 22:45:06,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:45:06,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:45:06,798 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_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2021-11-20 22:45:07,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:45:07,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:45:07,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:45:07,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:45:07,128 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:45:07,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2021-11-20 22:45:07,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/data/b9bb88e16/e4fa9be1e936473da4ad9d33af48b4f7/FLAG31484c131 [2021-11-20 22:45:07,848 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:45:07,849 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2021-11-20 22:45:07,864 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/data/b9bb88e16/e4fa9be1e936473da4ad9d33af48b4f7/FLAG31484c131 [2021-11-20 22:45:08,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/data/b9bb88e16/e4fa9be1e936473da4ad9d33af48b4f7 [2021-11-20 22:45:08,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:45:08,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:45:08,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:45:08,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:45:08,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:45:08,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644fffdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08, skipping insertion in model container [2021-11-20 22:45:08,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:45:08,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:45:08,672 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_1005c107-7d6e-4a7b-aeef-0ca193245774/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2021-11-20 22:45:08,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:45:08,698 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:45:08,781 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_1005c107-7d6e-4a7b-aeef-0ca193245774/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2021-11-20 22:45:08,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:45:08,858 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:45:08,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08 WrapperNode [2021-11-20 22:45:08,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:45:08,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:45:08,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:45:08,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:45:08,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,928 INFO L137 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2021-11-20 22:45:08,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:45:08,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:45:08,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:45:08,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:45:08,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:45:08,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:45:08,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:45:08,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:45:08,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (1/1) ... [2021-11-20 22:45:08,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:45:08,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:45:09,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:45:09,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:45:09,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 22:45:09,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 22:45:09,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 22:45:09,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 22:45:09,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 22:45:09,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 22:45:09,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 22:45:09,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 22:45:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 22:45:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-20 22:45:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:45:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 22:45:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:45:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:45:09,051 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 22:45:09,220 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:45:09,222 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:45:09,479 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:45:09,488 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:45:09,497 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 22:45:09,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:45:09 BoogieIcfgContainer [2021-11-20 22:45:09,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:45:09,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:45:09,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:45:09,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:45:09,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:45:08" (1/3) ... [2021-11-20 22:45:09,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecd3050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:45:09, skipping insertion in model container [2021-11-20 22:45:09,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:08" (2/3) ... [2021-11-20 22:45:09,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecd3050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:45:09, skipping insertion in model container [2021-11-20 22:45:09,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:45:09" (3/3) ... [2021-11-20 22:45:09,519 INFO L111 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2021-11-20 22:45:09,535 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 22:45:09,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:45:09,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 22:45:09,536 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 22:45:09,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,606 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,606 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,607 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,607 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,610 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,610 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,610 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,611 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,612 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,612 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,612 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,612 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,616 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,617 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,617 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,617 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,618 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,618 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,618 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,618 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,619 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,619 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,619 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,621 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,621 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,622 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,622 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,623 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,623 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,623 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,623 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,623 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,624 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,624 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,624 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,624 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,624 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,625 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,625 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,625 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,625 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,625 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,626 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,626 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,627 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,627 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,628 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,628 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,629 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,630 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,632 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,632 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,633 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,633 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,633 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,634 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,634 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,634 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,635 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,640 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,641 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,641 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,647 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,647 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,649 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,654 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,655 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,655 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 22:45:09,661 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-20 22:45:09,719 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:45:09,729 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 [2021-11-20 22:45:09,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 22:45:09,747 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-20 22:45:09,762 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 135 transitions, 286 flow [2021-11-20 22:45:09,765 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 135 transitions, 286 flow [2021-11-20 22:45:09,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 286 flow [2021-11-20 22:45:09,856 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2021-11-20 22:45:09,856 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 22:45:09,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 10/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2021-11-20 22:45:09,867 INFO L116 LiptonReduction]: Number of co-enabled transitions 1922 [2021-11-20 22:45:16,597 INFO L131 LiptonReduction]: Checked pairs total: 4259 [2021-11-20 22:45:16,598 INFO L133 LiptonReduction]: Total number of compositions: 119 [2021-11-20 22:45:16,606 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 33 transitions, 82 flow [2021-11-20 22:45:16,629 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 202 states, 201 states have (on average 2.691542288557214) internal successors, (541), 201 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 201 states have (on average 2.691542288557214) internal successors, (541), 201 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 22:45:16,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:45:16,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:45:16,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 22:45:16,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:45:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash 551182497, now seen corresponding path program 1 times [2021-11-20 22:45:16,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:45:16,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675754923] [2021-11-20 22:45:16,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:45:16,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:45:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:45:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:45:16,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:45:16,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675754923] [2021-11-20 22:45:16,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675754923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:45:16,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:45:16,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:45:16,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140405578] [2021-11-20 22:45:16,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:45:16,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:45:16,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:45:16,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:45:16,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:45:16,956 INFO L87 Difference]: Start difference. First operand has 202 states, 201 states have (on average 2.691542288557214) internal successors, (541), 201 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:17,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:45:17,086 INFO L93 Difference]: Finished difference Result 342 states and 898 transitions. [2021-11-20 22:45:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:45:17,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 22:45:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:45:17,111 INFO L225 Difference]: With dead ends: 342 [2021-11-20 22:45:17,111 INFO L226 Difference]: Without dead ends: 342 [2021-11-20 22:45:17,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:45:17,116 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:45:17,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 17 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:45:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-20 22:45:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 222. [2021-11-20 22:45:17,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.588235294117647) internal successors, (572), 221 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 572 transitions. [2021-11-20 22:45:17,197 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 572 transitions. Word has length 13 [2021-11-20 22:45:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:45:17,197 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 572 transitions. [2021-11-20 22:45:17,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 572 transitions. [2021-11-20 22:45:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 22:45:17,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:45:17,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:45:17,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 22:45:17,208 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 22:45:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:45:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash 914789557, now seen corresponding path program 1 times [2021-11-20 22:45:17,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:45:17,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819510938] [2021-11-20 22:45:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:45:17,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:45:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:45:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:45:17,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:45:17,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819510938] [2021-11-20 22:45:17,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819510938] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:45:17,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103331449] [2021-11-20 22:45:17,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:45:17,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:45:17,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:45:17,373 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:45:17,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 22:45:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:45:17,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 22:45:17,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:45:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 22:45:17,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:45:17,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103331449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:45:17,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 22:45:17,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-20 22:45:17,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307817894] [2021-11-20 22:45:17,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:45:17,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:45:17,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:45:17,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:45:17,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:45:17,590 INFO L87 Difference]: Start difference. First operand 222 states and 572 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:45:17,653 INFO L93 Difference]: Finished difference Result 376 states and 986 transitions. [2021-11-20 22:45:17,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:45:17,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 22:45:17,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:45:17,657 INFO L225 Difference]: With dead ends: 376 [2021-11-20 22:45:17,657 INFO L226 Difference]: Without dead ends: 376 [2021-11-20 22:45:17,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:45:17,659 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:45:17,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 18 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:45:17,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-20 22:45:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 244. [2021-11-20 22:45:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.5843621399176953) internal successors, (628), 243 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 628 transitions. [2021-11-20 22:45:17,677 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 628 transitions. Word has length 18 [2021-11-20 22:45:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:45:17,677 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 628 transitions. [2021-11-20 22:45:17,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 628 transitions. [2021-11-20 22:45:17,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 22:45:17,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:45:17,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:45:17,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 22:45:17,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:45:17,895 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 22:45:17,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:45:17,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1398488968, now seen corresponding path program 1 times [2021-11-20 22:45:17,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:45:17,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515155083] [2021-11-20 22:45:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:45:17,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:45:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:45:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 22:45:17,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:45:17,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515155083] [2021-11-20 22:45:17,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515155083] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:45:17,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973088915] [2021-11-20 22:45:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:45:17,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:45:17,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:45:17,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:45:17,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 22:45:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:45:18,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 22:45:18,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:45:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 22:45:18,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:45:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 22:45:18,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973088915] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:45:18,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [698687636] [2021-11-20 22:45:18,222 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 22:45:18,229 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:45:18,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-20 22:45:18,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278114159] [2021-11-20 22:45:18,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:45:18,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:45:18,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:45:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:45:18,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:45:18,233 INFO L87 Difference]: Start difference. First operand 244 states and 628 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:45:18,366 INFO L93 Difference]: Finished difference Result 552 states and 1456 transitions. [2021-11-20 22:45:18,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:45:18,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-20 22:45:18,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:45:18,374 INFO L225 Difference]: With dead ends: 552 [2021-11-20 22:45:18,374 INFO L226 Difference]: Without dead ends: 552 [2021-11-20 22:45:18,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:45:18,382 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 76 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:45:18,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 33 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:45:18,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-20 22:45:18,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2021-11-20 22:45:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 2.6424682395644283) internal successors, (1456), 551 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1456 transitions. [2021-11-20 22:45:18,429 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1456 transitions. Word has length 23 [2021-11-20 22:45:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:45:18,430 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 1456 transitions. [2021-11-20 22:45:18,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1456 transitions. [2021-11-20 22:45:18,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 22:45:18,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:45:18,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:45:18,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 22:45:18,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:45:18,652 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 22:45:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:45:18,652 INFO L85 PathProgramCache]: Analyzing trace with hash -176223224, now seen corresponding path program 2 times [2021-11-20 22:45:18,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:45:18,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281590527] [2021-11-20 22:45:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:45:18,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:45:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:45:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 22:45:18,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:45:18,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281590527] [2021-11-20 22:45:18,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281590527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:45:18,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292851651] [2021-11-20 22:45:18,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 22:45:18,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:45:18,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:45:18,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:45:18,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 22:45:18,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 22:45:18,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 22:45:18,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 22:45:18,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:45:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 22:45:18,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:45:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 22:45:19,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292851651] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:45:19,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1985122615] [2021-11-20 22:45:19,049 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 22:45:19,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:45:19,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-20 22:45:19,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788173907] [2021-11-20 22:45:19,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:45:19,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 22:45:19,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:45:19,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 22:45:19,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 22:45:19,055 INFO L87 Difference]: Start difference. First operand 552 states and 1456 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:45:19,420 INFO L93 Difference]: Finished difference Result 1192 states and 3059 transitions. [2021-11-20 22:45:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 22:45:19,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-20 22:45:19,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:45:19,436 INFO L225 Difference]: With dead ends: 1192 [2021-11-20 22:45:19,437 INFO L226 Difference]: Without dead ends: 1156 [2021-11-20 22:45:19,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-20 22:45:19,439 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 171 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:45:19,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 42 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:45:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-20 22:45:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1068. [2021-11-20 22:45:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 2.598875351452671) internal successors, (2773), 1067 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 2773 transitions. [2021-11-20 22:45:19,486 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 2773 transitions. Word has length 33 [2021-11-20 22:45:19,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:45:19,486 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 2773 transitions. [2021-11-20 22:45:19,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:19,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 2773 transitions. [2021-11-20 22:45:19,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 22:45:19,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:45:19,490 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:45:19,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 22:45:19,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:45:19,705 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 22:45:19,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:45:19,705 INFO L85 PathProgramCache]: Analyzing trace with hash -550669538, now seen corresponding path program 3 times [2021-11-20 22:45:19,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:45:19,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139778093] [2021-11-20 22:45:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:45:19,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:45:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:45:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 22:45:19,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:45:19,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139778093] [2021-11-20 22:45:19,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139778093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:45:19,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:45:19,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:45:19,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137741594] [2021-11-20 22:45:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:45:19,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:45:19,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:45:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:45:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:45:19,752 INFO L87 Difference]: Start difference. First operand 1068 states and 2773 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:45:19,809 INFO L93 Difference]: Finished difference Result 506 states and 979 transitions. [2021-11-20 22:45:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:45:19,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-20 22:45:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:45:19,813 INFO L225 Difference]: With dead ends: 506 [2021-11-20 22:45:19,814 INFO L226 Difference]: Without dead ends: 506 [2021-11-20 22:45:19,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:45:19,815 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:45:19,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 5 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:45:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-20 22:45:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 478. [2021-11-20 22:45:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.9475890985324948) internal successors, (929), 477 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 929 transitions. [2021-11-20 22:45:19,830 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 929 transitions. Word has length 43 [2021-11-20 22:45:19,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:45:19,831 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 929 transitions. [2021-11-20 22:45:19,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 929 transitions. [2021-11-20 22:45:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 22:45:19,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:45:19,833 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:45:19,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 22:45:19,834 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 22:45:19,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:45:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash 459286248, now seen corresponding path program 4 times [2021-11-20 22:45:19,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:45:19,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526747154] [2021-11-20 22:45:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:45:19,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:45:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:45:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 22:45:19,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:45:19,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526747154] [2021-11-20 22:45:19,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526747154] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:45:19,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457454976] [2021-11-20 22:45:19,982 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 22:45:19,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:45:19,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:45:19,983 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:45:20,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 22:45:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:45:20,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 22:45:20,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:45:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 22:45:20,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:45:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 22:45:20,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457454976] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:45:20,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1506200348] [2021-11-20 22:45:20,352 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 22:45:20,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:45:20,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-11-20 22:45:20,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971831495] [2021-11-20 22:45:20,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:45:20,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:45:20,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:45:20,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:45:20,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:45:20,355 INFO L87 Difference]: Start difference. First operand 478 states and 929 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:45:20,486 INFO L93 Difference]: Finished difference Result 332 states and 628 transitions. [2021-11-20 22:45:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:45:20,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-20 22:45:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:45:20,488 INFO L225 Difference]: With dead ends: 332 [2021-11-20 22:45:20,488 INFO L226 Difference]: Without dead ends: 326 [2021-11-20 22:45:20,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 22:45:20,489 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 37 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:45:20,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 8 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:45:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-20 22:45:20,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 300. [2021-11-20 22:45:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.9297658862876255) internal successors, (577), 299 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 577 transitions. [2021-11-20 22:45:20,499 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 577 transitions. Word has length 43 [2021-11-20 22:45:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:45:20,500 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 577 transitions. [2021-11-20 22:45:20,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:45:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 577 transitions. [2021-11-20 22:45:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 22:45:20,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:45:20,502 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:45:20,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 22:45:20,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 22:45:20,724 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 22:45:20,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:45:20,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1901620872, now seen corresponding path program 5 times [2021-11-20 22:45:20,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:45:20,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854007503] [2021-11-20 22:45:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:45:20,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:45:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 22:45:20,765 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 22:45:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 22:45:20,838 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 22:45:20,838 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 22:45:20,840 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-20 22:45:20,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-20 22:45:20,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-20 22:45:20,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 22:45:20,844 INFO L732 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2021-11-20 22:45:20,848 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-20 22:45:20,848 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 22:45:20,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:45:20 BasicIcfg [2021-11-20 22:45:20,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 22:45:20,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 22:45:20,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 22:45:20,978 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 22:45:20,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:45:09" (3/4) ... [2021-11-20 22:45:20,980 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 22:45:21,078 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 22:45:21,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 22:45:21,079 INFO L158 Benchmark]: Toolchain (without parser) took 12978.57ms. Allocated memory was 98.6MB in the beginning and 146.8MB in the end (delta: 48.2MB). Free memory was 65.3MB in the beginning and 53.3MB in the end (delta: 12.0MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2021-11-20 22:45:21,079 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory was 57.5MB in the beginning and 57.5MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 22:45:21,080 INFO L158 Benchmark]: CACSL2BoogieTranslator took 757.14ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.1MB in the beginning and 80.1MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 22:45:21,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.62ms. Allocated memory is still 121.6MB. Free memory was 80.1MB in the beginning and 77.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 22:45:21,080 INFO L158 Benchmark]: Boogie Preprocessor took 30.09ms. Allocated memory is still 121.6MB. Free memory was 77.6MB in the beginning and 76.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 22:45:21,081 INFO L158 Benchmark]: RCFGBuilder took 540.32ms. Allocated memory is still 121.6MB. Free memory was 76.0MB in the beginning and 61.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 22:45:21,081 INFO L158 Benchmark]: TraceAbstraction took 11462.43ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 60.9MB in the beginning and 64.8MB in the end (delta: -3.9MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2021-11-20 22:45:21,082 INFO L158 Benchmark]: Witness Printer took 113.83ms. Allocated memory is still 146.8MB. Free memory was 64.8MB in the beginning and 53.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 22:45:21,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory was 57.5MB in the beginning and 57.5MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 757.14ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.1MB in the beginning and 80.1MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.62ms. Allocated memory is still 121.6MB. Free memory was 80.1MB in the beginning and 77.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.09ms. Allocated memory is still 121.6MB. Free memory was 77.6MB in the beginning and 76.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 540.32ms. Allocated memory is still 121.6MB. Free memory was 76.0MB in the beginning and 61.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11462.43ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 60.9MB in the beginning and 64.8MB in the end (delta: -3.9MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * Witness Printer took 113.83ms. Allocated memory is still 146.8MB. Free memory was 64.8MB in the beginning and 53.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8s, 132 PlacesBefore, 35 PlacesAfterwards, 135 TransitionsBefore, 33 TransitionsAfterwards, 1922 CoEnabledTransitionPairs, 7 FixpointIterations, 66 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 119 TotalNumberOfCompositions, 4259 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2856, positive: 2701, positive conditional: 0, positive unconditional: 2701, negative: 155, negative conditional: 0, negative unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1334, positive: 1299, positive conditional: 0, positive unconditional: 1299, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1334, positive: 1280, positive conditional: 0, positive unconditional: 1280, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 109, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2856, positive: 1402, positive conditional: 0, positive unconditional: 1402, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 1334, unknown conditional: 0, unknown unconditional: 1334] , Statistics on independence cache: Total cache size (in pairs): 172, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={7:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={7:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L897] 2 num-- VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L915] 0 \read(t1) VAL [\read(t1)=-2, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L916] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 171 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 11.1s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.9s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 339 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 339 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 487 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 789 IncrementalHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 44 mSDtfsCounter, 789 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 218 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=4, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 394 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 333 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 676 SizeOfPredicates, 2 NumberOfNonLiveVariables, 906 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 195/209 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-20 22:45:21,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1005c107-7d6e-4a7b-aeef-0ca193245774/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE