./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7 --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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:14:22,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:14:22,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:14:22,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:14:22,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:14:22,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:14:22,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:14:22,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:14:22,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:14:22,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:14:22,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:14:22,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:14:22,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:14:22,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:14:22,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:14:22,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:14:22,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:14:22,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:14:22,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:14:22,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:14:22,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:14:22,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:14:22,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:14:22,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:14:22,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:14:22,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:14:22,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:14:22,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:14:22,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:14:22,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:14:22,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:14:22,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:14:22,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:14:22,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:14:22,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:14:22,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:14:22,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:14:22,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:14:22,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:14:22,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:14:22,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:14:22,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:14:22,697 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:14:22,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:14:22,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:14:22,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:14:22,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:14:22,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:14:22,699 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:14:22,699 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:14:22,699 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:14:22,699 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:14:22,700 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:14:22,700 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:14:22,700 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:14:22,700 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:14:22,701 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:14:22,701 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:14:22,701 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:14:22,701 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:14:22,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:14:22,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:14:22,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:14:22,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:14:22,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:14:22,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:14:22,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:14:22,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:14:22,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:14:22,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:14:22,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:14:22,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:14:22,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:14:22,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:14:22,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:14:22,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:14:22,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:14:22,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:14:22,706 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:14:22,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:14:22,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:14:22,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:14:22,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:14:22,707 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_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2021-11-25 20:14:22,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:14:22,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:14:22,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:14:22,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:14:22,982 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:14:22,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-11-25 20:14:23,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/data/60cdab620/72864202784644b298914ce347991951/FLAGc1313c641 [2021-11-25 20:14:23,499 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:14:23,500 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-11-25 20:14:23,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/data/60cdab620/72864202784644b298914ce347991951/FLAGc1313c641 [2021-11-25 20:14:23,894 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/data/60cdab620/72864202784644b298914ce347991951 [2021-11-25 20:14:23,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:14:23,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:14:23,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:14:23,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:14:23,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:14:23,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:14:23" (1/1) ... [2021-11-25 20:14:23,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cada84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:23, skipping insertion in model container [2021-11-25 20:14:23,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:14:23" (1/1) ... [2021-11-25 20:14:23,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:14:23,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:14:24,124 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_e7c7be80-e678-4ee6-a890-3ba45d3554ce/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2021-11-25 20:14:24,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:14:24,139 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:14:24,168 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_e7c7be80-e678-4ee6-a890-3ba45d3554ce/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2021-11-25 20:14:24,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:14:24,186 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:14:24,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24 WrapperNode [2021-11-25 20:14:24,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:14:24,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:14:24,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:14:24,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:14:24,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (1/1) ... [2021-11-25 20:14:24,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (1/1) ... [2021-11-25 20:14:24,260 INFO L137 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 232 [2021-11-25 20:14:24,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:14:24,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:14:24,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:14:24,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:14:24,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (1/1) ... [2021-11-25 20:14:24,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (1/1) ... [2021-11-25 20:14:24,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (1/1) ... [2021-11-25 20:14:24,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (1/1) ... [2021-11-25 20:14:24,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (1/1) ... [2021-11-25 20:14:24,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (1/1) ... [2021-11-25 20:14:24,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (1/1) ... [2021-11-25 20:14:24,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:14:24,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:14:24,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:14:24,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:14:24,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (1/1) ... [2021-11-25 20:14:24,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:14:24,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:24,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:14:24,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:14:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:14:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:14:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:14:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:14:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-25 20:14:24,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-25 20:14:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-25 20:14:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-25 20:14:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-25 20:14:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-25 20:14:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:14:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-25 20:14:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-25 20:14:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:14:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:14:24,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:14:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:14:24,447 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 20:14:24,581 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:14:24,583 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:14:24,996 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:14:25,137 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:14:25,137 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 20:14:25,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:14:25 BoogieIcfgContainer [2021-11-25 20:14:25,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:14:25,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:14:25,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:14:25,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:14:25,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:14:23" (1/3) ... [2021-11-25 20:14:25,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf48c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:14:25, skipping insertion in model container [2021-11-25 20:14:25,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:14:24" (2/3) ... [2021-11-25 20:14:25,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf48c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:14:25, skipping insertion in model container [2021-11-25 20:14:25,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:14:25" (3/3) ... [2021-11-25 20:14:25,149 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2021-11-25 20:14:25,164 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 20:14:25,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:14:25,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:14:25,164 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 20:14:25,209 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,210 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,210 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,210 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,211 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,211 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,212 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,212 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,214 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,214 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,215 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,215 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,218 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,218 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,219 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,219 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,220 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,220 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,221 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,223 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,223 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,223 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,223 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,223 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,223 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,224 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,224 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,224 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,253 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,256 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,256 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,256 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,256 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,256 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,256 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,256 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,257 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,257 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,257 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,257 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,257 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,258 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,258 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,258 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,258 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,258 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,258 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,258 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,259 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,262 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,262 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,262 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,262 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,263 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,263 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,263 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,263 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,263 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,263 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,264 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,264 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,264 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,265 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,266 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,266 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,266 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,278 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,278 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,278 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,279 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,279 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,279 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,279 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,285 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,285 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,285 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,285 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,285 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,285 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,286 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,286 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,292 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,293 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,293 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,293 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,293 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,293 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:14:25,303 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-25 20:14:25,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:14:25,361 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 [2021-11-25 20:14:25,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 20:14:25,392 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 20:14:25,410 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 315 transitions, 654 flow [2021-11-25 20:14:25,412 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 315 transitions, 654 flow [2021-11-25 20:14:25,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 298 places, 315 transitions, 654 flow [2021-11-25 20:14:25,556 INFO L129 PetriNetUnfolder]: 27/312 cut-off events. [2021-11-25 20:14:25,556 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-25 20:14:25,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 312 events. 27/312 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 205 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 244. Up to 3 conditions per place. [2021-11-25 20:14:25,567 INFO L116 LiptonReduction]: Number of co-enabled transitions 2634 [2021-11-25 20:14:36,207 INFO L131 LiptonReduction]: Checked pairs total: 4706 [2021-11-25 20:14:36,207 INFO L133 LiptonReduction]: Total number of compositions: 345 [2021-11-25 20:14:36,215 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 39 transitions, 102 flow [2021-11-25 20:14:36,262 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 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) [2021-11-25 20:14:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 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) [2021-11-25 20:14:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 20:14:36,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:36,283 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] [2021-11-25 20:14:36,283 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 20:14:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1495632617, now seen corresponding path program 1 times [2021-11-25 20:14:36,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:36,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640837691] [2021-11-25 20:14:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:36,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:14:36,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:36,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640837691] [2021-11-25 20:14:36,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640837691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:36,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:14:36,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:14:36,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745515752] [2021-11-25 20:14:36,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:36,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:14:36,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:36,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:14:36,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:36,667 INFO L87 Difference]: Start difference. First operand has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 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 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-11-25 20:14:36,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:36,783 INFO L93 Difference]: Finished difference Result 264 states and 923 transitions. [2021-11-25 20:14:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:14:36,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2021-11-25 20:14:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:36,809 INFO L225 Difference]: With dead ends: 264 [2021-11-25 20:14:36,809 INFO L226 Difference]: Without dead ends: 264 [2021-11-25 20:14:36,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:36,818 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:36,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:14:36,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-25 20:14:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-11-25 20:14:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 3.5095057034220534) internal successors, (923), 263 states have internal predecessors, (923), 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) [2021-11-25 20:14:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 923 transitions. [2021-11-25 20:14:36,899 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 923 transitions. Word has length 22 [2021-11-25 20:14:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:36,899 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 923 transitions. [2021-11-25 20:14:36,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-11-25 20:14:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 923 transitions. [2021-11-25 20:14:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 20:14:36,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:36,904 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] [2021-11-25 20:14:36,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:14:36,905 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 20:14:36,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1251195585, now seen corresponding path program 1 times [2021-11-25 20:14:36,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:36,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636266481] [2021-11-25 20:14:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:36,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:14:37,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:37,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636266481] [2021-11-25 20:14:37,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636266481] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:14:37,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080611088] [2021-11-25 20:14:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:37,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:37,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:37,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:37,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:14:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:37,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:14:37,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:14:37,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:14:37,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080611088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:37,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:14:37,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-25 20:14:37,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463447885] [2021-11-25 20:14:37,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:37,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:14:37,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:14:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:14:37,310 INFO L87 Difference]: Start difference. First operand 264 states and 923 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-25 20:14:37,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:37,381 INFO L93 Difference]: Finished difference Result 266 states and 925 transitions. [2021-11-25 20:14:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:14:37,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 [2021-11-25 20:14:37,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:37,386 INFO L225 Difference]: With dead ends: 266 [2021-11-25 20:14:37,386 INFO L226 Difference]: Without dead ends: 266 [2021-11-25 20:14:37,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:14:37,388 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:37,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 8 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:14:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-25 20:14:37,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-25 20:14:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 3.490566037735849) internal successors, (925), 265 states have internal predecessors, (925), 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) [2021-11-25 20:14:37,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 925 transitions. [2021-11-25 20:14:37,411 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 925 transitions. Word has length 23 [2021-11-25 20:14:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:37,411 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 925 transitions. [2021-11-25 20:14:37,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-25 20:14:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 925 transitions. [2021-11-25 20:14:37,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 20:14:37,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:37,415 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, 1, 1] [2021-11-25 20:14:37,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:37,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:37,637 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 20:14:37,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:37,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1962847852, now seen corresponding path program 1 times [2021-11-25 20:14:37,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:37,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526218266] [2021-11-25 20:14:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:37,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:14:37,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:37,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526218266] [2021-11-25 20:14:37,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526218266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:37,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:14:37,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:14:37,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682475467] [2021-11-25 20:14:37,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:37,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:14:37,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:14:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:37,856 INFO L87 Difference]: Start difference. First operand 266 states and 925 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-11-25 20:14:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:37,970 INFO L93 Difference]: Finished difference Result 477 states and 1683 transitions. [2021-11-25 20:14:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:14:37,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-11-25 20:14:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:37,979 INFO L225 Difference]: With dead ends: 477 [2021-11-25 20:14:37,980 INFO L226 Difference]: Without dead ends: 462 [2021-11-25 20:14:37,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:37,985 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:37,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 8 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:14:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-25 20:14:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 340. [2021-11-25 20:14:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.575221238938053) internal successors, (1212), 339 states have internal predecessors, (1212), 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) [2021-11-25 20:14:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1212 transitions. [2021-11-25 20:14:38,019 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1212 transitions. Word has length 25 [2021-11-25 20:14:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:38,020 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1212 transitions. [2021-11-25 20:14:38,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-11-25 20:14:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1212 transitions. [2021-11-25 20:14:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 20:14:38,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:38,024 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, 1, 1, 1, 1] [2021-11-25 20:14:38,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:14:38,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 20:14:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:38,025 INFO L85 PathProgramCache]: Analyzing trace with hash -108853103, now seen corresponding path program 1 times [2021-11-25 20:14:38,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:38,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360326163] [2021-11-25 20:14:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:38,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:14:38,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:38,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360326163] [2021-11-25 20:14:38,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360326163] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:14:38,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551656754] [2021-11-25 20:14:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:38,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:38,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:38,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:38,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:14:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:38,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:14:38,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:14:38,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:14:38,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551656754] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:14:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1492790978] [2021-11-25 20:14:38,583 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) [2021-11-25 20:14:38,585 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:14:38,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-11-25 20:14:38,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429769785] [2021-11-25 20:14:38,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:14:38,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:14:38,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:38,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:14:38,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:14:38,590 INFO L87 Difference]: Start difference. First operand 340 states and 1212 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 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) [2021-11-25 20:14:38,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:38,860 INFO L93 Difference]: Finished difference Result 618 states and 2063 transitions. [2021-11-25 20:14:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:14:38,860 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 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 27 [2021-11-25 20:14:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:38,866 INFO L225 Difference]: With dead ends: 618 [2021-11-25 20:14:38,866 INFO L226 Difference]: Without dead ends: 582 [2021-11-25 20:14:38,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:14:38,868 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 147 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:38,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 41 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:14:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-11-25 20:14:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 524. [2021-11-25 20:14:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.4818355640535374) internal successors, (1821), 523 states have internal predecessors, (1821), 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) [2021-11-25 20:14:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1821 transitions. [2021-11-25 20:14:38,899 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1821 transitions. Word has length 27 [2021-11-25 20:14:38,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:38,900 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1821 transitions. [2021-11-25 20:14:38,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 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) [2021-11-25 20:14:38,900 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1821 transitions. [2021-11-25 20:14:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 20:14:38,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:38,904 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, 1, 1, 1, 1, 1] [2021-11-25 20:14:38,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:39,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:39,116 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 20:14:39,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1591293435, now seen corresponding path program 1 times [2021-11-25 20:14:39,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:39,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39813881] [2021-11-25 20:14:39,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:39,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:14:39,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:39,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39813881] [2021-11-25 20:14:39,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39813881] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:14:39,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656285437] [2021-11-25 20:14:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:39,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:39,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:39,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:39,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:14:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:39,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:14:39,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:39,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:14:39,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:14:39,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656285437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:14:39,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [361049352] [2021-11-25 20:14:39,560 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) [2021-11-25 20:14:39,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:14:39,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-11-25 20:14:39,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762189423] [2021-11-25 20:14:39,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:14:39,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:14:39,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:39,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:14:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:14:39,563 INFO L87 Difference]: Start difference. First operand 524 states and 1821 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-11-25 20:14:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:39,856 INFO L93 Difference]: Finished difference Result 455 states and 1494 transitions. [2021-11-25 20:14:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 20:14:39,857 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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 28 [2021-11-25 20:14:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:39,859 INFO L225 Difference]: With dead ends: 455 [2021-11-25 20:14:39,860 INFO L226 Difference]: Without dead ends: 343 [2021-11-25 20:14:39,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:14:39,861 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 126 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:39,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 34 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:14:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-25 20:14:39,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-11-25 20:14:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 3.5526315789473686) internal successors, (1215), 342 states have internal predecessors, (1215), 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) [2021-11-25 20:14:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1215 transitions. [2021-11-25 20:14:39,876 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1215 transitions. Word has length 28 [2021-11-25 20:14:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:39,877 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 1215 transitions. [2021-11-25 20:14:39,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-11-25 20:14:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1215 transitions. [2021-11-25 20:14:39,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 20:14:39,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:39,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:39,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:40,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:40,105 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 20:14:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:40,105 INFO L85 PathProgramCache]: Analyzing trace with hash 990450030, now seen corresponding path program 2 times [2021-11-25 20:14:40,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:40,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140603676] [2021-11-25 20:14:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:40,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 20:14:40,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:40,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140603676] [2021-11-25 20:14:40,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140603676] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:14:40,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329670610] [2021-11-25 20:14:40,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:14:40,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:40,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:40,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:40,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:14:40,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:14:40,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:14:40,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:14:40,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 20:14:40,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 20:14:40,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329670610] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:14:40,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:14:40,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2021-11-25 20:14:40,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741332062] [2021-11-25 20:14:40,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:40,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:14:40,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:40,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:14:40,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:14:40,560 INFO L87 Difference]: Start difference. First operand 343 states and 1215 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-11-25 20:14:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:40,648 INFO L93 Difference]: Finished difference Result 325 states and 1180 transitions. [2021-11-25 20:14:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:14:40,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 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 30 [2021-11-25 20:14:40,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:40,652 INFO L225 Difference]: With dead ends: 325 [2021-11-25 20:14:40,652 INFO L226 Difference]: Without dead ends: 325 [2021-11-25 20:14:40,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:14:40,653 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 86 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:40,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 7 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:14:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-25 20:14:40,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 301. [2021-11-25 20:14:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 3.5733333333333333) internal successors, (1072), 300 states have internal predecessors, (1072), 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) [2021-11-25 20:14:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 1072 transitions. [2021-11-25 20:14:40,668 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 1072 transitions. Word has length 30 [2021-11-25 20:14:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:40,668 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 1072 transitions. [2021-11-25 20:14:40,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-11-25 20:14:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 1072 transitions. [2021-11-25 20:14:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 20:14:40,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:40,670 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:40,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:40,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:40,896 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 20:14:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1872634680, now seen corresponding path program 2 times [2021-11-25 20:14:40,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:40,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116651460] [2021-11-25 20:14:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:40,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:14:40,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:40,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116651460] [2021-11-25 20:14:40,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116651460] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:14:40,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149433609] [2021-11-25 20:14:40,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:14:40,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:40,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:40,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:41,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:14:41,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:14:41,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:14:41,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:14:41,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:14:41,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:14:41,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149433609] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:14:41,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:14:41,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2021-11-25 20:14:41,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204780599] [2021-11-25 20:14:41,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:41,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:14:41,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:41,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:14:41,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:14:41,403 INFO L87 Difference]: Start difference. First operand 301 states and 1072 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-25 20:14:41,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:41,499 INFO L93 Difference]: Finished difference Result 357 states and 1330 transitions. [2021-11-25 20:14:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:14:41,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 31 [2021-11-25 20:14:41,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:41,504 INFO L225 Difference]: With dead ends: 357 [2021-11-25 20:14:41,504 INFO L226 Difference]: Without dead ends: 357 [2021-11-25 20:14:41,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:14:41,506 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 86 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:41,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 10 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:14:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-25 20:14:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-11-25 20:14:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 3.735955056179775) internal successors, (1330), 356 states have internal predecessors, (1330), 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) [2021-11-25 20:14:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1330 transitions. [2021-11-25 20:14:41,526 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1330 transitions. Word has length 31 [2021-11-25 20:14:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:41,526 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 1330 transitions. [2021-11-25 20:14:41,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-25 20:14:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1330 transitions. [2021-11-25 20:14:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 20:14:41,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:41,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:41,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:41,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:41,745 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 20:14:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:41,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1604483135, now seen corresponding path program 1 times [2021-11-25 20:14:41,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:41,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578073918] [2021-11-25 20:14:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:41,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 20:14:41,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:41,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578073918] [2021-11-25 20:14:41,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578073918] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:14:41,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100771831] [2021-11-25 20:14:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:41,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:41,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:41,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:41,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:14:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:41,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:14:41,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 20:14:42,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:14:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 20:14:42,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100771831] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 20:14:42,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:14:42,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2021-11-25 20:14:42,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271870901] [2021-11-25 20:14:42,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:42,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:14:42,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:42,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:14:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:14:42,194 INFO L87 Difference]: Start difference. First operand 357 states and 1330 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-11-25 20:14:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:42,286 INFO L93 Difference]: Finished difference Result 463 states and 1748 transitions. [2021-11-25 20:14:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:14:42,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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 [2021-11-25 20:14:42,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:42,291 INFO L225 Difference]: With dead ends: 463 [2021-11-25 20:14:42,291 INFO L226 Difference]: Without dead ends: 463 [2021-11-25 20:14:42,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:14:42,292 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 51 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:42,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 10 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:14:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-11-25 20:14:42,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2021-11-25 20:14:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 3.7835497835497836) internal successors, (1748), 462 states have internal predecessors, (1748), 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) [2021-11-25 20:14:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1748 transitions. [2021-11-25 20:14:42,313 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1748 transitions. Word has length 33 [2021-11-25 20:14:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:42,314 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1748 transitions. [2021-11-25 20:14:42,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-11-25 20:14:42,314 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1748 transitions. [2021-11-25 20:14:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 20:14:42,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:42,316 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:42,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:14:42,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 20:14:42,536 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 20:14:42,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:42,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2103406239, now seen corresponding path program 1 times [2021-11-25 20:14:42,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:42,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928662394] [2021-11-25 20:14:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:42,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 20:14:42,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:42,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928662394] [2021-11-25 20:14:42,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928662394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:42,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:14:42,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:14:42,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268994187] [2021-11-25 20:14:42,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:42,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:14:42,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:42,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:14:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:14:42,688 INFO L87 Difference]: Start difference. First operand 463 states and 1748 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-11-25 20:14:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:42,760 INFO L93 Difference]: Finished difference Result 355 states and 1280 transitions. [2021-11-25 20:14:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:14:42,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 34 [2021-11-25 20:14:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:42,764 INFO L225 Difference]: With dead ends: 355 [2021-11-25 20:14:42,764 INFO L226 Difference]: Without dead ends: 355 [2021-11-25 20:14:42,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:14:42,766 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:42,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 13 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:14:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-11-25 20:14:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2021-11-25 20:14:42,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 3.615819209039548) internal successors, (1280), 354 states have internal predecessors, (1280), 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) [2021-11-25 20:14:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1280 transitions. [2021-11-25 20:14:42,808 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1280 transitions. Word has length 34 [2021-11-25 20:14:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:42,809 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 1280 transitions. [2021-11-25 20:14:42,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-11-25 20:14:42,809 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1280 transitions. [2021-11-25 20:14:42,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 20:14:42,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:42,811 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:42,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:14:42,812 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 20:14:42,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:42,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1349493755, now seen corresponding path program 2 times [2021-11-25 20:14:42,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:42,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222099051] [2021-11-25 20:14:42,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:42,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:14:44,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:44,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222099051] [2021-11-25 20:14:44,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222099051] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:14:44,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249013930] [2021-11-25 20:14:44,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:14:44,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:14:44,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:14:44,282 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:14:44,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c7be80-e678-4ee6-a890-3ba45d3554ce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:14:44,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 20:14:44,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:14:44,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-25 20:14:44,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:14:44,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 20:14:44,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:14:44,928 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:14:44,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 20:14:45,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 20:14:45,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 20:14:45,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:45,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:45,130 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 20:14:45,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2021-11-25 20:14:45,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:45,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:45,474 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 20:14:45,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-11-25 20:14:45,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:45,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:14:45,627 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 20:14:45,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-11-25 20:14:46,021 INFO L354 Elim1Store]: treesize reduction 220, result has 17.3 percent of original size [2021-11-25 20:14:46,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 69 treesize of output 90 [2021-11-25 20:14:57,549 INFO L354 Elim1Store]: treesize reduction 28, result has 73.8 percent of original size [2021-11-25 20:14:57,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 186 treesize of output 174 [2021-11-25 20:14:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 20:14:58,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:15:09,477 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_565 Int)) (or (and (forall ((~C~0.offset Int)) (let ((.cse1 (store (select |c_#memory_int| c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) (let ((.cse0 (select (select (store |c_#memory_int| c_~C~0.base .cse1) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)))) (or (<= (+ c_~mina~0 .cse0) (select .cse1 (+ (* c_thread3Thread1of1ForFork1_~i~2 4) ~C~0.offset))) (< c_~minb~0 .cse0))))) (forall ((~C~0.offset Int)) (let ((.cse2 (store (select |c_#memory_int| c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) (or (<= (+ c_~minb~0 c_~mina~0) (select .cse2 (+ (* c_thread3Thread1of1ForFork1_~i~2 4) ~C~0.offset))) (<= (select (select (store |c_#memory_int| c_~C~0.base .cse2) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)) c_~minb~0)))) (forall ((~C~0.offset Int)) (let ((.cse3 (select (select (store |c_#memory_int| c_~C~0.base (store (select |c_#memory_int| c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565)) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)))) (or (< c_~minb~0 .cse3) (<= (+ c_~mina~0 .cse3) c_~minc~0)))) (or (<= (+ c_~minb~0 c_~mina~0) c_~minc~0) (forall ((~C~0.offset Int)) (<= (select (select (store |c_#memory_int| c_~C~0.base (store (select |c_#memory_int| c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565)) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)) c_~minb~0)))) (< v_ArrVal_565 (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset 4)) (select (select |c_#memory_int| c_~B~0.base) (+ c_~B~0.offset 4)))))) is different from false [2021-11-25 20:15:14,163 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_565 Int) (v_ArrVal_564 (Array Int Int))) (or (let ((.cse0 (+ c_~minb~0 c_~mina~0)) (.cse1 (forall ((~C~0.offset Int)) (<= (select (select (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse6 c_~C~0.base (store (select .cse6 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)) c_~minb~0)))) (and (or (<= .cse0 v_ArrVal_565) .cse1) (forall ((~C~0.offset Int)) (let ((.cse2 (select (select (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse3 c_~C~0.base (store (select .cse3 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)))) (or (<= (+ c_~mina~0 .cse2) c_~minc~0) (< c_~minb~0 .cse2)))) (or (<= .cse0 c_~minc~0) .cse1) (forall ((~C~0.offset Int)) (let ((.cse4 (select (select (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse5 c_~C~0.base (store (select .cse5 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)))) (or (< c_~minb~0 .cse4) (<= (+ c_~mina~0 .cse4) v_ArrVal_565)))))) (< v_ArrVal_565 (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (+ (select (select .cse7 c_~A~0.base) (+ c_~A~0.offset 4)) (select (select .cse7 c_~B~0.base) (+ c_~B~0.offset 4))))))) is different from false [2021-11-25 20:15:14,495 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_565 Int) (v_ArrVal_564 (Array Int Int)) (v_ArrVal_563 (Array Int Int))) (or (< v_ArrVal_565 (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (+ (select (select .cse0 c_~B~0.base) (+ c_~B~0.offset 4)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset 4))))) (let ((.cse1 (+ c_~minb~0 c_~mina~0)) (.cse2 (forall ((~C~0.offset Int)) (<= (select (select (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse7 c_~C~0.base (store (select .cse7 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)) c_~minb~0)))) (and (or (<= .cse1 c_~minc~0) .cse2) (or (<= .cse1 v_ArrVal_565) .cse2) (forall ((~C~0.offset Int)) (let ((.cse3 (select (select (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse4 c_~C~0.base (store (select .cse4 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)))) (or (<= (+ .cse3 c_~mina~0) c_~minc~0) (< c_~minb~0 .cse3)))) (forall ((~C~0.offset Int)) (let ((.cse5 (select (select (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse6 c_~C~0.base (store (select .cse6 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)))) (or (< c_~minb~0 .cse5) (<= (+ .cse5 c_~mina~0) v_ArrVal_565)))))))) is different from false [2021-11-25 20:15:14,681 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_565 Int) (v_ArrVal_564 (Array Int Int)) (v_ArrVal_563 (Array Int Int))) (or (< v_ArrVal_565 (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (+ (select (select .cse0 c_~B~0.base) (+ c_~B~0.offset 4)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset 4))))) (let ((.cse1 (+ c_~minb~0 c_~mina~0)) (.cse2 (forall ((~C~0.offset Int)) (<= (select (select (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse7 c_~C~0.base (store (select .cse7 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)) c_~minb~0)))) (and (or (<= .cse1 c_~minc~0) .cse2) (or (<= .cse1 v_ArrVal_565) .cse2) (forall ((~C~0.offset Int)) (let ((.cse3 (select (select (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse4 c_~C~0.base (store (select .cse4 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)))) (or (<= (+ .cse3 c_~mina~0) c_~minc~0) (< c_~minb~0 .cse3)))) (forall ((~C~0.offset Int)) (let ((.cse5 (select (select (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse6 c_~C~0.base (store (select .cse6 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset)))) (or (< c_~minb~0 .cse5) (<= (+ .cse5 c_~mina~0) v_ArrVal_565)))))))) (<= (select (select |c_#memory_int| c_~A~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~A~0.offset)) c_~mina~0)) is different from false [2021-11-25 20:15:14,872 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_565 Int) (v_ArrVal_564 (Array Int Int)) (v_ArrVal_563 (Array Int Int))) (or (< v_ArrVal_565 (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (+ (select (select .cse0 c_~B~0.base) (+ c_~B~0.offset 4)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset 4))))) (let ((.cse5 (+ c_~minb~0 c_~mina~0)) (.cse6 (forall ((~C~0.offset Int)) (<= (select (select (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse7 c_~C~0.base (store (select .cse7 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ c_~B~0.offset 4)) c_~minb~0)))) (and (forall ((~C~0.offset Int)) (let ((.cse1 (select (select (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse2 c_~C~0.base (store (select .cse2 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ c_~B~0.offset 4)))) (or (< c_~minb~0 .cse1) (<= (+ .cse1 c_~mina~0) c_~minc~0)))) (forall ((~C~0.offset Int)) (let ((.cse3 (select (select (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse4 c_~C~0.base (store (select .cse4 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ c_~B~0.offset 4)))) (or (< c_~minb~0 .cse3) (<= (+ .cse3 c_~mina~0) v_ArrVal_565)))) (or (<= .cse5 c_~minc~0) .cse6) (or (<= .cse5 v_ArrVal_565) .cse6))))) (<= (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset 4)) c_~mina~0)) is different from false [2021-11-25 20:15:15,568 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_565 Int) (v_ArrVal_562 (Array Int Int)) (v_ArrVal_564 (Array Int Int)) (v_ArrVal_563 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_562)) (.cse1 (+ c_~A~0.offset 4))) (or (< v_ArrVal_565 (let ((.cse0 (store (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (+ (select (select .cse0 c_~A~0.base) .cse1) (select (select .cse0 c_~B~0.base) (+ c_~B~0.offset 4))))) (and (forall ((~C~0.offset Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_562))) (let ((.cse3 (select (select (let ((.cse5 (store (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ c_~B~0.offset 4)))) (or (<= (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) .cse3) v_ArrVal_565) (<= (+ .cse3 (select (select .cse4 c_~A~0.base) (+ c_~A~0.offset 4))) (+ v_ArrVal_565 1)) (< (select (select |c_#memory_int| c_~B~0.base) c_~B~0.offset) .cse3))))) (let ((.cse9 (select (select |c_#memory_int| c_~B~0.base) c_~B~0.offset))) (or (forall ((~C~0.offset Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_562))) (let ((.cse6 (select (select (let ((.cse8 (store (store .cse7 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select .cse8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ c_~B~0.offset 4)))) (or (<= (+ .cse6 (select (select .cse7 c_~A~0.base) (+ c_~A~0.offset 4))) (+ v_ArrVal_565 2)) (<= (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) .cse6) (+ v_ArrVal_565 1)))))) (<= (+ .cse9 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset)) v_ArrVal_565) (<= (+ .cse9 (select (select .cse2 c_~A~0.base) .cse1)) (+ v_ArrVal_565 1)))))))) is different from false [2021-11-25 20:15:15,806 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_565 Int) (v_ArrVal_562 (Array Int Int)) (v_ArrVal_561 (Array Int Int)) (v_ArrVal_564 (Array Int Int)) (v_ArrVal_563 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_561))) (let ((.cse2 (store .cse8 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_562)) (.cse1 (+ c_~A~0.offset 4))) (or (< v_ArrVal_565 (let ((.cse0 (store (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (+ (select (select .cse0 c_~B~0.base) (+ c_~B~0.offset 4)) (select (select .cse0 c_~A~0.base) .cse1)))) (and (let ((.cse3 (select (select .cse8 c_~B~0.base) c_~B~0.offset))) (or (<= (+ (select (select .cse2 c_~A~0.base) .cse1) .cse3) (+ v_ArrVal_565 1)) (forall ((~C~0.offset Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_561))) (let ((.cse6 (store .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_562))) (let ((.cse5 (select (select (let ((.cse7 (store (store .cse6 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ c_~B~0.offset 4)))) (or (<= (+ (select (select .cse4 c_~A~0.base) c_~A~0.offset) .cse5) (+ v_ArrVal_565 1)) (<= (+ .cse5 (select (select .cse6 c_~A~0.base) (+ c_~A~0.offset 4))) (+ v_ArrVal_565 2))))))) (<= (+ (select (select .cse8 c_~A~0.base) c_~A~0.offset) .cse3) v_ArrVal_565))) (forall ((~C~0.offset Int)) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_561))) (let ((.cse10 (store .cse11 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_562))) (let ((.cse9 (select (select (let ((.cse12 (store (store .cse10 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_564))) (store .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ ~C~0.offset 4) v_ArrVal_565))) c_~B~0.base) (+ c_~B~0.offset 4)))) (or (<= (+ .cse9 (select (select .cse10 c_~A~0.base) (+ c_~A~0.offset 4))) (+ v_ArrVal_565 1)) (<= (+ (select (select .cse11 c_~A~0.base) c_~A~0.offset) .cse9) v_ArrVal_565) (< (select (select .cse11 c_~B~0.base) c_~B~0.offset) .cse9))))))))))) is different from false [2021-11-25 20:15:16,910 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:15:16,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 616 treesize of output 376 [2021-11-25 20:15:20,176 INFO L354 Elim1Store]: treesize reduction 30, result has 77.1 percent of original size [2021-11-25 20:15:20,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 115338960 treesize of output 107099392 [2021-11-25 20:20:16,915 WARN L227 SmtUtils]: Spent 4.94m on a formula simplification that was a NOOP. DAG size: 29951 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:20:19,781 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:20:19,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115488000 treesize of output 109204748 [2021-11-25 20:25:49,886 WARN L227 SmtUtils]: Spent 5.50m on a formula simplification that was a NOOP. DAG size: 29980 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:25:52,016 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:25:52,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118773004 treesize of output 114451736