./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan --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 222125c717d992fdf8da41f61f0a35e98727dda6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:27:49,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:27:49,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:27:49,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:27:49,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:27:49,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:27:49,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:27:49,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:27:49,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:27:49,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:27:49,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:27:49,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:27:49,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:27:49,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:27:49,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:27:49,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:27:49,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:27:49,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:27:49,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:27:49,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:27:49,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:27:49,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:27:49,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:27:49,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:27:49,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:27:49,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:27:49,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:27:49,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:27:49,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:27:49,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:27:49,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:27:49,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:27:49,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:27:49,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:27:49,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:27:49,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:27:49,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:27:49,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:27:49,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:27:49,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:27:49,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:27:49,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:27:49,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:27:49,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:27:49,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:27:49,602 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:27:49,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:27:49,603 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:27:49,603 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:27:49,603 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:27:49,604 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:27:49,604 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:27:49,605 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:27:49,605 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:27:49,606 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:27:49,606 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:27:49,606 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:27:49,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:27:49,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:27:49,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:27:49,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:27:49,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:27:49,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:27:49,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:27:49,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:27:49,609 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:27:49,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:27:49,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:27:49,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:27:49,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:27:49,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:27:49,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:27:49,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:27:49,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:49,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:27:49,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:27:49,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:27:49,614 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:27:49,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:27:49,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:27:49,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:27:49,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:27:49,615 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-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 222125c717d992fdf8da41f61f0a35e98727dda6 [2020-11-28 07:27:49,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:27:49,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:27:49,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:27:49,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:27:49,970 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:27:49,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/../../sv-benchmarks/c/pthread/stack-2.i [2020-11-28 07:27:50,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/data/babde0c21/2d59165f54394600be5f148e96da0584/FLAG6af6c6ecf [2020-11-28 07:27:50,743 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:27:50,743 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/sv-benchmarks/c/pthread/stack-2.i [2020-11-28 07:27:50,775 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/data/babde0c21/2d59165f54394600be5f148e96da0584/FLAG6af6c6ecf [2020-11-28 07:27:50,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/data/babde0c21/2d59165f54394600be5f148e96da0584 [2020-11-28 07:27:50,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:27:50,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:27:50,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:50,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:27:50,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:27:50,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:50,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157b65de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:50, skipping insertion in model container [2020-11-28 07:27:50,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:50" (1/1) ... [2020-11-28 07:27:50,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:27:51,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:27:51,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:51,572 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:27:51,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:51,809 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:27:51,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51 WrapperNode [2020-11-28 07:27:51,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:51,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:51,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:27:51,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:27:51,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:51,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:27:51,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:27:51,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:27:51,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:27:51,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:27:51,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:27:51,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:27:51,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:51,985 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-28 07:27:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-28 07:27:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-28 07:27:51,986 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-28 07:27:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:27:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:27:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:27:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:27:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-28 07:27:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:27:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:27:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:27:51,989 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:27:52,603 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:27:52,603 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-11-28 07:27:52,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:52 BoogieIcfgContainer [2020-11-28 07:27:52,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:27:52,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:27:52,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:27:52,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:27:52,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:27:50" (1/3) ... [2020-11-28 07:27:52,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432300e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:52, skipping insertion in model container [2020-11-28 07:27:52,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (2/3) ... [2020-11-28 07:27:52,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432300e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:52, skipping insertion in model container [2020-11-28 07:27:52,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:52" (3/3) ... [2020-11-28 07:27:52,615 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-2.i [2020-11-28 07:27:52,627 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:27:52,627 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:27:52,633 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:27:52,634 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:27:52,671 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,671 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,671 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,672 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,672 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,672 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,672 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,672 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,673 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,674 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,674 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,674 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,674 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,674 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,674 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,675 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,675 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,675 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,675 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,675 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,676 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,676 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,676 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,676 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,676 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,677 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,677 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,677 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,677 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,678 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,678 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,678 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,678 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,678 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,679 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,679 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,679 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,679 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,679 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,680 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,680 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,680 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,681 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,681 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,681 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,681 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,683 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,683 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,683 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,683 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,684 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,684 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,684 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,685 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,685 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,685 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,685 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,686 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,687 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,690 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,690 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,691 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,691 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,691 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,693 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,693 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,694 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,694 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,694 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,696 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,697 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,697 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,697 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,697 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,698 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,698 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,698 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,698 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,698 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,699 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,700 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,704 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,704 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,707 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,707 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,707 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,707 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,707 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,708 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,708 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,708 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,709 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,709 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,713 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,713 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,714 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,714 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,714 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,714 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,714 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,717 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,717 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,717 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,717 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,717 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,717 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,718 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,718 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,718 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,718 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,718 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,718 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,719 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,719 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,719 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,719 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,719 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,720 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,720 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,720 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,720 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,720 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,720 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,721 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,721 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,721 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,721 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,727 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,727 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,729 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,731 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,734 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,734 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,752 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,752 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,752 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,752 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,753 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,755 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,756 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,756 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,756 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,756 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,756 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,771 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,771 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,771 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,772 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,772 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,772 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,772 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,772 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,773 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,773 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,773 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,773 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,773 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,774 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:27:52,841 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-28 07:27:52,855 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:27:52,878 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:27:52,878 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:27:52,879 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:27:52,879 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:27:52,879 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:27:52,879 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:27:52,879 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:27:52,880 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:27:52,898 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:27:52,900 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 163 transitions, 348 flow [2020-11-28 07:27:52,904 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 163 transitions, 348 flow [2020-11-28 07:27:52,906 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 163 transitions, 348 flow [2020-11-28 07:27:53,046 INFO L129 PetriNetUnfolder]: 13/163 cut-off events. [2020-11-28 07:27:53,047 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-28 07:27:53,058 INFO L80 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 163 events. 13/163 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 445 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 123. Up to 3 conditions per place. [2020-11-28 07:27:53,071 INFO L116 LiptonReduction]: Number of co-enabled transitions 7732 [2020-11-28 07:27:56,631 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-28 07:27:56,809 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-28 07:27:57,533 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-11-28 07:27:57,756 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-28 07:27:59,312 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 158 DAG size of output: 146 [2020-11-28 07:27:59,771 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-28 07:27:59,908 INFO L131 LiptonReduction]: Checked pairs total: 13131 [2020-11-28 07:27:59,909 INFO L133 LiptonReduction]: Total number of compositions: 157 [2020-11-28 07:27:59,915 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 41 transitions, 104 flow [2020-11-28 07:27:59,941 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2020-11-28 07:27:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-11-28 07:27:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:27:59,950 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:59,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:27:59,951 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:59,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:59,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1417848858, now seen corresponding path program 1 times [2020-11-28 07:27:59,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:59,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329845571] [2020-11-28 07:27:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:00,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329845571] [2020-11-28 07:28:00,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:00,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:00,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731707160] [2020-11-28 07:28:00,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:00,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:00,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:00,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:00,260 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-11-28 07:28:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:00,339 INFO L93 Difference]: Finished difference Result 602 states and 1541 transitions. [2020-11-28 07:28:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:00,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:28:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:00,377 INFO L225 Difference]: With dead ends: 602 [2020-11-28 07:28:00,380 INFO L226 Difference]: Without dead ends: 580 [2020-11-28 07:28:00,381 INFO L677 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 [2020-11-28 07:28:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-11-28 07:28:00,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 427. [2020-11-28 07:28:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-28 07:28:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1148 transitions. [2020-11-28 07:28:00,479 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1148 transitions. Word has length 6 [2020-11-28 07:28:00,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:00,479 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 1148 transitions. [2020-11-28 07:28:00,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:00,480 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1148 transitions. [2020-11-28 07:28:00,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:28:00,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:00,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:00,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:28:00,482 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:00,483 INFO L82 PathProgramCache]: Analyzing trace with hash 2040891315, now seen corresponding path program 1 times [2020-11-28 07:28:00,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:00,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252854291] [2020-11-28 07:28:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:00,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252854291] [2020-11-28 07:28:00,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:00,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:00,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610049578] [2020-11-28 07:28:00,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:00,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:00,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:00,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:00,623 INFO L87 Difference]: Start difference. First operand 427 states and 1148 transitions. Second operand 3 states. [2020-11-28 07:28:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:00,661 INFO L93 Difference]: Finished difference Result 530 states and 1370 transitions. [2020-11-28 07:28:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:00,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 07:28:00,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:00,668 INFO L225 Difference]: With dead ends: 530 [2020-11-28 07:28:00,668 INFO L226 Difference]: Without dead ends: 508 [2020-11-28 07:28:00,669 INFO L677 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 [2020-11-28 07:28:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-11-28 07:28:00,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 468. [2020-11-28 07:28:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-11-28 07:28:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1250 transitions. [2020-11-28 07:28:00,738 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1250 transitions. Word has length 8 [2020-11-28 07:28:00,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:00,739 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 1250 transitions. [2020-11-28 07:28:00,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1250 transitions. [2020-11-28 07:28:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:28:00,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:00,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:00,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:28:00,741 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:00,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:00,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1542370467, now seen corresponding path program 1 times [2020-11-28 07:28:00,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:00,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614984136] [2020-11-28 07:28:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:00,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614984136] [2020-11-28 07:28:00,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:00,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:00,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917667613] [2020-11-28 07:28:00,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:00,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:00,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:00,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:00,833 INFO L87 Difference]: Start difference. First operand 468 states and 1250 transitions. Second operand 3 states. [2020-11-28 07:28:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:00,851 INFO L93 Difference]: Finished difference Result 504 states and 1343 transitions. [2020-11-28 07:28:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:00,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 07:28:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:00,857 INFO L225 Difference]: With dead ends: 504 [2020-11-28 07:28:00,857 INFO L226 Difference]: Without dead ends: 504 [2020-11-28 07:28:00,857 INFO L677 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 [2020-11-28 07:28:00,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-28 07:28:00,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-11-28 07:28:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-11-28 07:28:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1343 transitions. [2020-11-28 07:28:00,897 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1343 transitions. Word has length 10 [2020-11-28 07:28:00,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:00,897 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 1343 transitions. [2020-11-28 07:28:00,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1343 transitions. [2020-11-28 07:28:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:28:00,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:00,905 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:00,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:28:00,905 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:00,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:00,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1453291019, now seen corresponding path program 1 times [2020-11-28 07:28:00,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:00,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436412660] [2020-11-28 07:28:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:01,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436412660] [2020-11-28 07:28:01,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048715675] [2020-11-28 07:28:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:28:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:01,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:28:01,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:01,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:01,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [945048727] [2020-11-28 07:28:01,446 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$PathProgramConstructor.createPathProgramTransition(PathProgram.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:269) 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:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:111) 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:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:360) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2020-11-28 07:28:01,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:28:01,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2020-11-28 07:28:01,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843469605] [2020-11-28 07:28:01,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:28:01,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:01,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:28:01,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:28:01,455 INFO L87 Difference]: Start difference. First operand 504 states and 1343 transitions. Second operand 10 states. [2020-11-28 07:28:01,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:01,782 INFO L93 Difference]: Finished difference Result 1250 states and 3210 transitions. [2020-11-28 07:28:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 07:28:01,783 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-28 07:28:01,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:01,795 INFO L225 Difference]: With dead ends: 1250 [2020-11-28 07:28:01,795 INFO L226 Difference]: Without dead ends: 1250 [2020-11-28 07:28:01,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:28:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-11-28 07:28:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 904. [2020-11-28 07:28:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-11-28 07:28:01,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2416 transitions. [2020-11-28 07:28:01,845 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2416 transitions. Word has length 14 [2020-11-28 07:28:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:01,845 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 2416 transitions. [2020-11-28 07:28:01,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:28:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2416 transitions. [2020-11-28 07:28:01,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:28:01,852 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:01,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:02,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:28:02,066 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:02,067 INFO L82 PathProgramCache]: Analyzing trace with hash 492744942, now seen corresponding path program 1 times [2020-11-28 07:28:02,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:02,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358639825] [2020-11-28 07:28:02,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:02,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358639825] [2020-11-28 07:28:02,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:02,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:28:02,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512136502] [2020-11-28 07:28:02,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:02,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:02,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:02,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:02,127 INFO L87 Difference]: Start difference. First operand 904 states and 2416 transitions. Second operand 3 states. [2020-11-28 07:28:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:02,159 INFO L93 Difference]: Finished difference Result 439 states and 991 transitions. [2020-11-28 07:28:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:02,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-28 07:28:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:02,164 INFO L225 Difference]: With dead ends: 439 [2020-11-28 07:28:02,164 INFO L226 Difference]: Without dead ends: 435 [2020-11-28 07:28:02,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-11-28 07:28:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 403. [2020-11-28 07:28:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-28 07:28:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 899 transitions. [2020-11-28 07:28:02,182 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 899 transitions. Word has length 16 [2020-11-28 07:28:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:02,182 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 899 transitions. [2020-11-28 07:28:02,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 899 transitions. [2020-11-28 07:28:02,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:28:02,183 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:02,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:02,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:28:02,184 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:02,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:02,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1972798213, now seen corresponding path program 1 times [2020-11-28 07:28:02,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:02,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291648618] [2020-11-28 07:28:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:02,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291648618] [2020-11-28 07:28:02,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:02,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:28:02,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806196074] [2020-11-28 07:28:02,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:28:02,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:02,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:28:02,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:28:02,321 INFO L87 Difference]: Start difference. First operand 403 states and 899 transitions. Second operand 5 states. [2020-11-28 07:28:02,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:02,478 INFO L93 Difference]: Finished difference Result 563 states and 1255 transitions. [2020-11-28 07:28:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:28:02,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 07:28:02,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:02,484 INFO L225 Difference]: With dead ends: 563 [2020-11-28 07:28:02,485 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:28:02,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:28:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:28:02,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 441. [2020-11-28 07:28:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-11-28 07:28:02,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 990 transitions. [2020-11-28 07:28:02,510 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 990 transitions. Word has length 17 [2020-11-28 07:28:02,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:02,510 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 990 transitions. [2020-11-28 07:28:02,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:28:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 990 transitions. [2020-11-28 07:28:02,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:28:02,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:02,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:02,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:28:02,513 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:02,514 INFO L82 PathProgramCache]: Analyzing trace with hash -380326838, now seen corresponding path program 1 times [2020-11-28 07:28:02,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:02,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089264914] [2020-11-28 07:28:02,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:03,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089264914] [2020-11-28 07:28:03,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:03,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-28 07:28:03,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094534762] [2020-11-28 07:28:03,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 07:28:03,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:03,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 07:28:03,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:28:03,361 INFO L87 Difference]: Start difference. First operand 441 states and 990 transitions. Second operand 14 states. [2020-11-28 07:28:03,695 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-28 07:28:04,934 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-11-28 07:28:05,164 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-28 07:28:05,379 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-28 07:28:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:05,594 INFO L93 Difference]: Finished difference Result 846 states and 1850 transitions. [2020-11-28 07:28:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 07:28:05,596 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-11-28 07:28:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:05,602 INFO L225 Difference]: With dead ends: 846 [2020-11-28 07:28:05,602 INFO L226 Difference]: Without dead ends: 846 [2020-11-28 07:28:05,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2020-11-28 07:28:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-11-28 07:28:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 548. [2020-11-28 07:28:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-11-28 07:28:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1256 transitions. [2020-11-28 07:28:05,626 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1256 transitions. Word has length 21 [2020-11-28 07:28:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:05,627 INFO L481 AbstractCegarLoop]: Abstraction has 548 states and 1256 transitions. [2020-11-28 07:28:05,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 07:28:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1256 transitions. [2020-11-28 07:28:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:28:05,629 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:05,629 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:05,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:28:05,629 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:05,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:05,630 INFO L82 PathProgramCache]: Analyzing trace with hash -191252421, now seen corresponding path program 1 times [2020-11-28 07:28:05,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:05,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337925897] [2020-11-28 07:28:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:28:05,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:28:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:28:05,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:28:05,839 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:28:05,839 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:28:05,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:28:05,840 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-28 07:28:05,841 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-28 07:28:05,841 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-28 07:28:05,852 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [642] [642] L995-1-->L960: Formula: (let ((.cse0 (mod t1Thread1of1ForFork1_~tmp~0_In1573484133 4294967296))) (and (< .cse0 5) (= |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1573484133| t1Thread1of1ForFork1_assume_abort_if_not_~cond_Out1573484133) (= |t1Thread1of1ForFork1_push_#in~stack.base_Out1573484133| |~#arr~0.base_In1573484133|) (= |t1Thread1of1ForFork1_push_#in~x_Out1573484133| .cse0) (= |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1573484133| 1) (= |t1Thread1of1ForFork1_push_#in~stack.offset_Out1573484133| |~#arr~0.offset_In1573484133|))) InVars {~#arr~0.offset=|~#arr~0.offset_In1573484133|, t1Thread1of1ForFork1_~tmp~0=t1Thread1of1ForFork1_~tmp~0_In1573484133, ~#arr~0.base=|~#arr~0.base_In1573484133|} OutVars{t1Thread1of1ForFork1_push_#in~x=|t1Thread1of1ForFork1_push_#in~x_Out1573484133|, ~#arr~0.offset=|~#arr~0.offset_In1573484133|, t1Thread1of1ForFork1_push_#t~nondet36=|t1Thread1of1ForFork1_push_#t~nondet36_Out1573484133|, t1Thread1of1ForFork1_push_~stack.offset=t1Thread1of1ForFork1_push_~stack.offset_Out1573484133, t1Thread1of1ForFork1_push_#res=|t1Thread1of1ForFork1_push_#res_Out1573484133|, t1Thread1of1ForFork1_push_~stack.base=t1Thread1of1ForFork1_push_~stack.base_Out1573484133, t1Thread1of1ForFork1_push_#t~ret38=|t1Thread1of1ForFork1_push_#t~ret38_Out1573484133|, t1Thread1of1ForFork1_assume_abort_if_not_~cond=t1Thread1of1ForFork1_assume_abort_if_not_~cond_Out1573484133, t1Thread1of1ForFork1_~tmp~0=t1Thread1of1ForFork1_~tmp~0_In1573484133, t1Thread1of1ForFork1_push_#in~stack.base=|t1Thread1of1ForFork1_push_#in~stack.base_Out1573484133|, t1Thread1of1ForFork1_push_~x=t1Thread1of1ForFork1_push_~x_Out1573484133, t1Thread1of1ForFork1_#t~nondet46=|t1Thread1of1ForFork1_#t~nondet46_Out1573484133|, t1Thread1of1ForFork1_push_#in~stack.offset=|t1Thread1of1ForFork1_push_#in~stack.offset_Out1573484133|, t1Thread1of1ForFork1_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1573484133|, ~#arr~0.base=|~#arr~0.base_In1573484133|} AuxVars[] AssignedVars[t1Thread1of1ForFork1_push_#in~x, t1Thread1of1ForFork1_assume_abort_if_not_~cond, t1Thread1of1ForFork1_push_#in~stack.base, t1Thread1of1ForFork1_push_~x, t1Thread1of1ForFork1_push_#t~nondet36, t1Thread1of1ForFork1_push_~stack.offset, t1Thread1of1ForFork1_push_#res, t1Thread1of1ForFork1_#t~nondet46, t1Thread1of1ForFork1_push_~stack.base, t1Thread1of1ForFork1_push_#in~stack.offset, t1Thread1of1ForFork1_assume_abort_if_not_#in~cond, t1Thread1of1ForFork1_push_#t~ret38] because there is no mapped edge [2020-11-28 07:28:05,859 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [643] [643] L997-2-->L1000: Formula: (and (<= 0 (+ |t1Thread1of1ForFork1_#t~ret47_In-1101583323| 2147483648)) (not (= (- 1) |t1Thread1of1ForFork1_#t~ret47_In-1101583323|)) (= ~flag~0_Out-1101583323 1) (<= |t1Thread1of1ForFork1_#t~ret47_In-1101583323| 2147483647) (= |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-1101583323| |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-1101583323|) (= |t1Thread1of1ForFork1_reach_error_#t~nondet2.base_In-1101583323| |t1Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-1101583323|)) InVars {t1Thread1of1ForFork1_#t~ret47=|t1Thread1of1ForFork1_#t~ret47_In-1101583323|, t1Thread1of1ForFork1_reach_error_#t~nondet2.base=|t1Thread1of1ForFork1_reach_error_#t~nondet2.base_In-1101583323|, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-1101583323|} OutVars{~flag~0=~flag~0_Out-1101583323, t1Thread1of1ForFork1_#t~ret47=|t1Thread1of1ForFork1_#t~ret47_Out-1101583323|, t1Thread1of1ForFork1_reach_error_#t~nondet2.base=|t1Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-1101583323|, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-1101583323|} AuxVars[] AssignedVars[~flag~0, t1Thread1of1ForFork1_#t~ret47, t1Thread1of1ForFork1_reach_error_#t~nondet2.base, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-28 07:28:05,866 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [652] [652] L1012-4-->L1007-6: Formula: (and (= t2Thread1of1ForFork0_~i~1_Out1686908680 (+ t2Thread1of1ForFork0_~i~1_In1686908680 1)) (= (store |#pthreadsMutex_In1686908680| |~#m~0.base_In1686908680| (store (select |#pthreadsMutex_In1686908680| |~#m~0.base_In1686908680|) |~#m~0.offset_In1686908680| 0)) |#pthreadsMutex_Out1686908680|) (= |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1686908680| |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1686908680|) (not (= (- 2) |t2Thread1of1ForFork0_#t~ret50_In1686908680|)) (= |t2Thread1of1ForFork0_reach_error_#t~nondet2.base_In1686908680| |t2Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1686908680|)) InVars {t2Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1686908680|, #pthreadsMutex=|#pthreadsMutex_In1686908680|, t2Thread1of1ForFork0_reach_error_#t~nondet2.base=|t2Thread1of1ForFork0_reach_error_#t~nondet2.base_In1686908680|, ~#m~0.base=|~#m~0.base_In1686908680|, t2Thread1of1ForFork0_#t~ret50=|t2Thread1of1ForFork0_#t~ret50_In1686908680|, ~#m~0.offset=|~#m~0.offset_In1686908680|, t2Thread1of1ForFork0_~i~1=t2Thread1of1ForFork0_~i~1_In1686908680} OutVars{#pthreadsMutex=|#pthreadsMutex_Out1686908680|, t2Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1686908680|, t2Thread1of1ForFork0_reach_error_#t~nondet2.base=|t2Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1686908680|, ~#m~0.base=|~#m~0.base_In1686908680|, t2Thread1of1ForFork0_#t~ret50=|t2Thread1of1ForFork0_#t~ret50_Out1686908680|, ~#m~0.offset=|~#m~0.offset_In1686908680|, t2Thread1of1ForFork0_#t~post48=|t2Thread1of1ForFork0_#t~post48_Out1686908680|, t2Thread1of1ForFork0_~i~1=t2Thread1of1ForFork0_~i~1_Out1686908680} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork0_reach_error_#t~nondet2.offset, t2Thread1of1ForFork0_reach_error_#t~nondet2.base, t2Thread1of1ForFork0_#t~ret50, t2Thread1of1ForFork0_#t~post48, t2Thread1of1ForFork0_~i~1] because there is no mapped edge [2020-11-28 07:28:05,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:28:05 BasicIcfg [2020-11-28 07:28:05,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:28:05,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:28:05,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:28:05,969 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:28:05,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:52" (3/4) ... [2020-11-28 07:28:05,971 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:28:05,975 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [642] [642] L995-1-->L960: Formula: (let ((.cse0 (mod t1Thread1of1ForFork1_~tmp~0_In1573484133 4294967296))) (and (< .cse0 5) (= |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1573484133| t1Thread1of1ForFork1_assume_abort_if_not_~cond_Out1573484133) (= |t1Thread1of1ForFork1_push_#in~stack.base_Out1573484133| |~#arr~0.base_In1573484133|) (= |t1Thread1of1ForFork1_push_#in~x_Out1573484133| .cse0) (= |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1573484133| 1) (= |t1Thread1of1ForFork1_push_#in~stack.offset_Out1573484133| |~#arr~0.offset_In1573484133|))) InVars {~#arr~0.offset=|~#arr~0.offset_In1573484133|, t1Thread1of1ForFork1_~tmp~0=t1Thread1of1ForFork1_~tmp~0_In1573484133, ~#arr~0.base=|~#arr~0.base_In1573484133|} OutVars{t1Thread1of1ForFork1_push_#in~x=|t1Thread1of1ForFork1_push_#in~x_Out1573484133|, ~#arr~0.offset=|~#arr~0.offset_In1573484133|, t1Thread1of1ForFork1_push_#t~nondet36=|t1Thread1of1ForFork1_push_#t~nondet36_Out1573484133|, t1Thread1of1ForFork1_push_~stack.offset=t1Thread1of1ForFork1_push_~stack.offset_Out1573484133, t1Thread1of1ForFork1_push_#res=|t1Thread1of1ForFork1_push_#res_Out1573484133|, t1Thread1of1ForFork1_push_~stack.base=t1Thread1of1ForFork1_push_~stack.base_Out1573484133, t1Thread1of1ForFork1_push_#t~ret38=|t1Thread1of1ForFork1_push_#t~ret38_Out1573484133|, t1Thread1of1ForFork1_assume_abort_if_not_~cond=t1Thread1of1ForFork1_assume_abort_if_not_~cond_Out1573484133, t1Thread1of1ForFork1_~tmp~0=t1Thread1of1ForFork1_~tmp~0_In1573484133, t1Thread1of1ForFork1_push_#in~stack.base=|t1Thread1of1ForFork1_push_#in~stack.base_Out1573484133|, t1Thread1of1ForFork1_push_~x=t1Thread1of1ForFork1_push_~x_Out1573484133, t1Thread1of1ForFork1_#t~nondet46=|t1Thread1of1ForFork1_#t~nondet46_Out1573484133|, t1Thread1of1ForFork1_push_#in~stack.offset=|t1Thread1of1ForFork1_push_#in~stack.offset_Out1573484133|, t1Thread1of1ForFork1_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1573484133|, ~#arr~0.base=|~#arr~0.base_In1573484133|} AuxVars[] AssignedVars[t1Thread1of1ForFork1_push_#in~x, t1Thread1of1ForFork1_assume_abort_if_not_~cond, t1Thread1of1ForFork1_push_#in~stack.base, t1Thread1of1ForFork1_push_~x, t1Thread1of1ForFork1_push_#t~nondet36, t1Thread1of1ForFork1_push_~stack.offset, t1Thread1of1ForFork1_push_#res, t1Thread1of1ForFork1_#t~nondet46, t1Thread1of1ForFork1_push_~stack.base, t1Thread1of1ForFork1_push_#in~stack.offset, t1Thread1of1ForFork1_assume_abort_if_not_#in~cond, t1Thread1of1ForFork1_push_#t~ret38] because there is no mapped edge [2020-11-28 07:28:05,982 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [643] [643] L997-2-->L1000: Formula: (and (<= 0 (+ |t1Thread1of1ForFork1_#t~ret47_In-1101583323| 2147483648)) (not (= (- 1) |t1Thread1of1ForFork1_#t~ret47_In-1101583323|)) (= ~flag~0_Out-1101583323 1) (<= |t1Thread1of1ForFork1_#t~ret47_In-1101583323| 2147483647) (= |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-1101583323| |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-1101583323|) (= |t1Thread1of1ForFork1_reach_error_#t~nondet2.base_In-1101583323| |t1Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-1101583323|)) InVars {t1Thread1of1ForFork1_#t~ret47=|t1Thread1of1ForFork1_#t~ret47_In-1101583323|, t1Thread1of1ForFork1_reach_error_#t~nondet2.base=|t1Thread1of1ForFork1_reach_error_#t~nondet2.base_In-1101583323|, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-1101583323|} OutVars{~flag~0=~flag~0_Out-1101583323, t1Thread1of1ForFork1_#t~ret47=|t1Thread1of1ForFork1_#t~ret47_Out-1101583323|, t1Thread1of1ForFork1_reach_error_#t~nondet2.base=|t1Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-1101583323|, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-1101583323|} AuxVars[] AssignedVars[~flag~0, t1Thread1of1ForFork1_#t~ret47, t1Thread1of1ForFork1_reach_error_#t~nondet2.base, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-28 07:28:05,990 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [652] [652] L1012-4-->L1007-6: Formula: (and (= t2Thread1of1ForFork0_~i~1_Out1686908680 (+ t2Thread1of1ForFork0_~i~1_In1686908680 1)) (= (store |#pthreadsMutex_In1686908680| |~#m~0.base_In1686908680| (store (select |#pthreadsMutex_In1686908680| |~#m~0.base_In1686908680|) |~#m~0.offset_In1686908680| 0)) |#pthreadsMutex_Out1686908680|) (= |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1686908680| |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1686908680|) (not (= (- 2) |t2Thread1of1ForFork0_#t~ret50_In1686908680|)) (= |t2Thread1of1ForFork0_reach_error_#t~nondet2.base_In1686908680| |t2Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1686908680|)) InVars {t2Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1686908680|, #pthreadsMutex=|#pthreadsMutex_In1686908680|, t2Thread1of1ForFork0_reach_error_#t~nondet2.base=|t2Thread1of1ForFork0_reach_error_#t~nondet2.base_In1686908680|, ~#m~0.base=|~#m~0.base_In1686908680|, t2Thread1of1ForFork0_#t~ret50=|t2Thread1of1ForFork0_#t~ret50_In1686908680|, ~#m~0.offset=|~#m~0.offset_In1686908680|, t2Thread1of1ForFork0_~i~1=t2Thread1of1ForFork0_~i~1_In1686908680} OutVars{#pthreadsMutex=|#pthreadsMutex_Out1686908680|, t2Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1686908680|, t2Thread1of1ForFork0_reach_error_#t~nondet2.base=|t2Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1686908680|, ~#m~0.base=|~#m~0.base_In1686908680|, t2Thread1of1ForFork0_#t~ret50=|t2Thread1of1ForFork0_#t~ret50_Out1686908680|, ~#m~0.offset=|~#m~0.offset_In1686908680|, t2Thread1of1ForFork0_#t~post48=|t2Thread1of1ForFork0_#t~post48_Out1686908680|, t2Thread1of1ForFork0_~i~1=t2Thread1of1ForFork0_~i~1_Out1686908680} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork0_reach_error_#t~nondet2.offset, t2Thread1of1ForFork0_reach_error_#t~nondet2.base, t2Thread1of1ForFork0_#t~ret50, t2Thread1of1ForFork0_#t~post48, t2Thread1of1ForFork0_~i~1] because there is no mapped edge [2020-11-28 07:28:06,069 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_93a2e99c-602e-4527-b39f-f43f13999b44/bin/utaipan/witness.graphml [2020-11-28 07:28:06,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:28:06,071 INFO L168 Benchmark]: Toolchain (without parser) took 15110.02 ms. Allocated memory was 94.4 MB in the beginning and 207.6 MB in the end (delta: 113.2 MB). Free memory was 61.4 MB in the beginning and 106.3 MB in the end (delta: -44.9 MB). Peak memory consumption was 68.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:06,071 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:06,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 835.79 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 61.2 MB in the beginning and 81.2 MB in the end (delta: -20.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:06,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.83 ms. Allocated memory is still 117.4 MB. Free memory was 81.2 MB in the beginning and 78.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:06,073 INFO L168 Benchmark]: Boogie Preprocessor took 35.42 ms. Allocated memory is still 117.4 MB. Free memory was 78.4 MB in the beginning and 77.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:06,074 INFO L168 Benchmark]: RCFGBuilder took 702.57 ms. Allocated memory is still 117.4 MB. Free memory was 77.1 MB in the beginning and 89.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:06,075 INFO L168 Benchmark]: TraceAbstraction took 13360.15 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 88.5 MB in the beginning and 116.8 MB in the end (delta: -28.3 MB). Peak memory consumption was 61.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:06,076 INFO L168 Benchmark]: Witness Printer took 101.56 ms. Allocated memory is still 207.6 MB. Free memory was 116.8 MB in the beginning and 106.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:06,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 835.79 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 61.2 MB in the beginning and 81.2 MB in the end (delta: -20.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.83 ms. Allocated memory is still 117.4 MB. Free memory was 81.2 MB in the beginning and 78.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.42 ms. Allocated memory is still 117.4 MB. Free memory was 78.4 MB in the beginning and 77.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 702.57 ms. Allocated memory is still 117.4 MB. Free memory was 77.1 MB in the beginning and 89.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13360.15 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 88.5 MB in the beginning and 116.8 MB in the end (delta: -28.3 MB). Peak memory consumption was 61.7 MB. Max. memory is 16.1 GB. * Witness Printer took 101.56 ms. Allocated memory is still 207.6 MB. Free memory was 116.8 MB in the beginning and 106.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 5728 VarBasedMoverChecksPositive, 100 VarBasedMoverChecksNegative, 35 SemBasedMoverChecksPositive, 65 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 345 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 7.0s, 156 PlacesBefore, 40 PlacesAfterwards, 163 TransitionsBefore, 41 TransitionsAfterwards, 7732 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 91 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 6 ChoiceCompositions, 157 TotalNumberOfCompositions, 13131 MoverChecksTotal - CounterExampleResult [Line: 20]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(5)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1021] 0 pthread_t id1, id2; [L1023] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={9:0}, flag=0, m={7:0}, top=0] [L990] 1 int i; [L991] 1 unsigned int tmp; [L992] 1 i=0 VAL [arr={9:0}, flag=0, m={7:0}, top=0] [L992] COND TRUE 1 i<(5) [L995] 1 tmp = __VERIFIER_nondet_uint() [L962] COND FALSE 1 !(top==(5)) [L954] 1 return top; [L1024] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={9:0}, flag=0, m={7:0}, top=0] [L1006] 2 int i; [L1007] 2 i=0 VAL [arr={9:0}, flag=0, m={7:0}, top=0] [L969] 1 stack[get_top()] = x [L946] 1 top++ [L972] 1 return 0; [L992] 1 i++ VAL [arr={9:0}, flag=1, m={7:0}, top=1] [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L954] 2 return top; [L976] COND FALSE 2 !(get_top()==0) [L950] 2 top-- VAL [arr={9:0}, flag=1, m={7:0}, top=0] [L954] 2 return top; VAL [arr={9:0}, flag=1, m={7:0}, top=0] [L984] EXPR 2 stack[get_top()] [L984] 2 return stack[get_top()]; [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L954] 2 return top; [L976] COND TRUE 2 get_top()==0 [L979] 2 return (-2); [L1012] COND TRUE 2 !(pop(arr)!=(-2)) [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack-2.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={9:0}, flag=1, m={7:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 150 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.9s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.0s, HoareTripleCheckerStatistics: 364 SDtfs, 494 SDslu, 1032 SDs, 0 SdLazy, 805 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 991 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 10695 SizeOfPredicates, 2 NumberOfNonLiveVariables, 173 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 3/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...