./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/qw2004-2.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_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/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 4f482efddcbed4494444cc90149347b5e59bc608 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 02:07:05,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:07:05,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:07:05,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:07:05,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:07:05,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:07:05,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:07:05,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:07:05,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:07:06,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:07:06,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:07:06,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:07:06,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:07:06,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:07:06,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:07:06,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:07:06,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:07:06,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:07:06,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:07:06,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:07:06,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:07:06,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:07:06,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:07:06,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:07:06,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:07:06,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:07:06,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:07:06,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:07:06,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:07:06,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:07:06,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:07:06,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:07:06,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:07:06,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:07:06,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:07:06,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:07:06,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:07:06,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:07:06,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:07:06,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:07:06,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:07:06,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:07:06,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:07:06,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:07:06,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:07:06,113 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:07:06,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:07:06,114 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:07:06,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:07:06,115 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:07:06,115 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:07:06,115 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:07:06,116 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:07:06,117 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:07:06,117 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:07:06,118 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:07:06,118 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:07:06,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:07:06,119 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:07:06,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:07:06,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:07:06,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:07:06,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:07:06,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:07:06,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:07:06,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:07:06,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:07:06,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:07:06,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:07:06,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:07:06,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:07:06,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:07:06,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:07:06,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:07:06,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:07:06,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:07:06,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:07:06,128 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:07:06,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:07:06,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:07:06,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:07:06,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:07:06,130 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_361aac29-8a50-4d84-a843-5664c38bd178/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f482efddcbed4494444cc90149347b5e59bc608 [2020-11-30 02:07:06,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:07:06,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:07:06,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:07:06,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:07:06,501 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:07:06,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/../../sv-benchmarks/c/pthread-lit/qw2004-2.i [2020-11-30 02:07:06,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/data/aa70c0c92/2e4db1e47e434e34a71a0e38b3d68196/FLAGe48760eb2 [2020-11-30 02:07:07,160 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:07:07,160 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/sv-benchmarks/c/pthread-lit/qw2004-2.i [2020-11-30 02:07:07,196 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/data/aa70c0c92/2e4db1e47e434e34a71a0e38b3d68196/FLAGe48760eb2 [2020-11-30 02:07:07,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/data/aa70c0c92/2e4db1e47e434e34a71a0e38b3d68196 [2020-11-30 02:07:07,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:07:07,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:07:07,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:07:07,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:07:07,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:07:07,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:07:07" (1/1) ... [2020-11-30 02:07:07,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96da10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:07, skipping insertion in model container [2020-11-30 02:07:07,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:07:07" (1/1) ... [2020-11-30 02:07:07,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:07:07,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:07:08,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:07:08,067 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:07:08,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:07:08,212 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:07:08,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08 WrapperNode [2020-11-30 02:07:08,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:07:08,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:07:08,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:07:08,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:07:08,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (1/1) ... [2020-11-30 02:07:08,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (1/1) ... [2020-11-30 02:07:08,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:07:08,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:07:08,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:07:08,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:07:08,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (1/1) ... [2020-11-30 02:07:08,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (1/1) ... [2020-11-30 02:07:08,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (1/1) ... [2020-11-30 02:07:08,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (1/1) ... [2020-11-30 02:07:08,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (1/1) ... [2020-11-30 02:07:08,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (1/1) ... [2020-11-30 02:07:08,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (1/1) ... [2020-11-30 02:07:08,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:07:08,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:07:08,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:07:08,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:07:08,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/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 [2020-11-30 02:07:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-11-30 02:07:08,379 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-11-30 02:07:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 02:07:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-30 02:07:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:07:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:07:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:07:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-30 02:07:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:07:08,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:07:08,383 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 02:07:09,193 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:07:09,193 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-30 02:07:09,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:07:09 BoogieIcfgContainer [2020-11-30 02:07:09,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:07:09,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:07:09,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:07:09,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:07:09,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:07:07" (1/3) ... [2020-11-30 02:07:09,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b4d05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:07:09, skipping insertion in model container [2020-11-30 02:07:09,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:08" (2/3) ... [2020-11-30 02:07:09,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b4d05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:07:09, skipping insertion in model container [2020-11-30 02:07:09,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:07:09" (3/3) ... [2020-11-30 02:07:09,207 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-11-30 02:07:09,221 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 02:07:09,221 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:07:09,226 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:07:09,227 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 02:07:09,253 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,253 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,254 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,254 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,254 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,254 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,255 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,255 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,255 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,255 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,256 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,256 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,256 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,256 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,257 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,257 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,257 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,257 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,257 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,258 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,258 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,258 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,259 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,259 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,259 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,259 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,259 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,260 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,260 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,260 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,260 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,261 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,263 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,263 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,264 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,264 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,264 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,264 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,265 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,265 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,265 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,265 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,265 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,266 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:07:09,268 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-30 02:07:09,283 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 02:07:09,308 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:07:09,308 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:07:09,309 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:07:09,309 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:07:09,309 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:07:09,309 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:07:09,309 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:07:09,309 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:07:09,323 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 02:07:09,326 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 100 transitions, 205 flow [2020-11-30 02:07:09,330 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 100 transitions, 205 flow [2020-11-30 02:07:09,332 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 100 transitions, 205 flow [2020-11-30 02:07:09,393 INFO L129 PetriNetUnfolder]: 7/99 cut-off events. [2020-11-30 02:07:09,394 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-30 02:07:09,400 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 99 events. 7/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 79. Up to 3 conditions per place. [2020-11-30 02:07:09,411 INFO L116 LiptonReduction]: Number of co-enabled transitions 2700 [2020-11-30 02:07:11,987 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-11-30 02:07:12,447 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-30 02:07:12,874 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-30 02:07:12,875 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:07:12,890 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-30 02:07:12,891 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:07:12,905 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-30 02:07:12,905 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:07:12,918 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-30 02:07:12,919 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:07:12,995 INFO L131 LiptonReduction]: Checked pairs total: 3127 [2020-11-30 02:07:12,995 INFO L133 LiptonReduction]: Total number of compositions: 120 [2020-11-30 02:07:13,002 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2020-11-30 02:07:13,009 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 42 states. [2020-11-30 02:07:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-11-30 02:07:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:07:13,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:13,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:07:13,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:07:13,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:13,021 INFO L82 PathProgramCache]: Analyzing trace with hash 12546630, now seen corresponding path program 1 times [2020-11-30 02:07:13,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:07:13,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603238602] [2020-11-30 02:07:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:07:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:07:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:07:13,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603238602] [2020-11-30 02:07:13,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:07:13,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:07:13,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854381247] [2020-11-30 02:07:13,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:07:13,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:07:13,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:07:13,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:07:13,239 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-11-30 02:07:13,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:07:13,291 INFO L93 Difference]: Finished difference Result 70 states and 127 transitions. [2020-11-30 02:07:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:07:13,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 02:07:13,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:07:13,308 INFO L225 Difference]: With dead ends: 70 [2020-11-30 02:07:13,308 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 02:07:13,311 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 [2020-11-30 02:07:13,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 02:07:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2020-11-30 02:07:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:07:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2020-11-30 02:07:13,353 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 4 [2020-11-30 02:07:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:07:13,353 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2020-11-30 02:07:13,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:07:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2020-11-30 02:07:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:07:13,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:13,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:07:13,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:07:13,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:07:13,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:13,356 INFO L82 PathProgramCache]: Analyzing trace with hash 388890567, now seen corresponding path program 1 times [2020-11-30 02:07:13,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:07:13,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174412505] [2020-11-30 02:07:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:07:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:07:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:07:13,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174412505] [2020-11-30 02:07:13,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:07:13,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 02:07:13,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918463276] [2020-11-30 02:07:13,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:07:13,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:07:13,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:07:13,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:07:13,429 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand 3 states. [2020-11-30 02:07:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:07:13,437 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2020-11-30 02:07:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:07:13,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:07:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:07:13,439 INFO L225 Difference]: With dead ends: 23 [2020-11-30 02:07:13,439 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 02:07:13,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:07:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 02:07:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 02:07:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 02:07:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-11-30 02:07:13,444 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2020-11-30 02:07:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:07:13,444 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-11-30 02:07:13,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:07:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2020-11-30 02:07:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:07:13,445 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:13,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:07:13,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:07:13,446 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:07:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:13,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1882358192, now seen corresponding path program 1 times [2020-11-30 02:07:13,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:07:13,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526752627] [2020-11-30 02:07:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:07:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:07:13,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:07:13,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526752627] [2020-11-30 02:07:13,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:07:13,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:07:13,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696223104] [2020-11-30 02:07:13,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:07:13,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:07:13,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:07:13,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:07:13,516 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand 3 states. [2020-11-30 02:07:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:07:13,529 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2020-11-30 02:07:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:07:13,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 02:07:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:07:13,531 INFO L225 Difference]: With dead ends: 27 [2020-11-30 02:07:13,531 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 02:07:13,532 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 [2020-11-30 02:07:13,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 02:07:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 02:07:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 02:07:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2020-11-30 02:07:13,536 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 8 [2020-11-30 02:07:13,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:07:13,536 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2020-11-30 02:07:13,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:07:13,537 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2020-11-30 02:07:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:07:13,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:13,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:07:13,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:07:13,538 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:07:13,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:13,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1283650339, now seen corresponding path program 1 times [2020-11-30 02:07:13,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:07:13,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768006661] [2020-11-30 02:07:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:07:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:07:13,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:07:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:07:13,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:07:13,633 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:07:13,633 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:07:13,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:07:13,635 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-30 02:07:13,635 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-30 02:07:13,641 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [365] [365] L726-3-->L750: Formula: (let ((.cse0 (= BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_Out1648819315 |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6_In1648819315|)) (.cse2 (= BCSP_PnpStopThread1of1ForFork0_~lse~0_Out1648819315 |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_Out1648819315|)) (.cse1 (= BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_Out1648819315 0))) (or (and (= ~stoppingEvent~0_Out1648819315 BCSP_PnpStopThread1of1ForFork0_~lse~0_Out1648819315) (= ~stoppingEvent~0_Out1648819315 1) .cse0 .cse1 .cse2) (and .cse0 .cse2 (= ~stoppingEvent~0_In1648819315 ~stoppingEvent~0_Out1648819315) (not .cse1) (= BCSP_PnpStopThread1of1ForFork0_~lse~0_Out1648819315 ~stoppingEvent~0_In1648819315)))) InVars {~stoppingEvent~0=~stoppingEvent~0_In1648819315, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6=|BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6_In1648819315|} OutVars{~stoppingEvent~0=~stoppingEvent~0_Out1648819315, BCSP_PnpStopThread1of1ForFork0_~lse~0=BCSP_PnpStopThread1of1ForFork0_~lse~0_Out1648819315, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_Out1648819315|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6=|BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6_Out1648819315|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_Out1648819315} AuxVars[] AssignedVars[~stoppingEvent~0, BCSP_PnpStopThread1of1ForFork0_~lse~0, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0] because there is no mapped edge [2020-11-30 02:07:13,642 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [380] [380] L750-->BCSP_PnpStopEXIT: Formula: (and (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1299501370 |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1299501370|) (= |BCSP_PnpStopThread1of1ForFork0_#res.base_Out1299501370| 0) (= ~stopped~0_Out1299501370 1) (not (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1299501370 0)) (= |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1299501370| 0)) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1299501370|} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1299501370, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1299501370|, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out1299501370|, ~stopped~0=~stopped~0_Out1299501370, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1299501370|} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] because there is no mapped edge [2020-11-30 02:07:13,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:07:13 BasicIcfg [2020-11-30 02:07:13,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:07:13,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:07:13,678 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:07:13,679 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:07:13,679 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:07:09" (3/4) ... [2020-11-30 02:07:13,683 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:07:13,686 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [365] [365] L726-3-->L750: Formula: (let ((.cse0 (= BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_Out1648819315 |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6_In1648819315|)) (.cse2 (= BCSP_PnpStopThread1of1ForFork0_~lse~0_Out1648819315 |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_Out1648819315|)) (.cse1 (= BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_Out1648819315 0))) (or (and (= ~stoppingEvent~0_Out1648819315 BCSP_PnpStopThread1of1ForFork0_~lse~0_Out1648819315) (= ~stoppingEvent~0_Out1648819315 1) .cse0 .cse1 .cse2) (and .cse0 .cse2 (= ~stoppingEvent~0_In1648819315 ~stoppingEvent~0_Out1648819315) (not .cse1) (= BCSP_PnpStopThread1of1ForFork0_~lse~0_Out1648819315 ~stoppingEvent~0_In1648819315)))) InVars {~stoppingEvent~0=~stoppingEvent~0_In1648819315, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6=|BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6_In1648819315|} OutVars{~stoppingEvent~0=~stoppingEvent~0_Out1648819315, BCSP_PnpStopThread1of1ForFork0_~lse~0=BCSP_PnpStopThread1of1ForFork0_~lse~0_Out1648819315, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_Out1648819315|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6=|BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6_Out1648819315|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_Out1648819315} AuxVars[] AssignedVars[~stoppingEvent~0, BCSP_PnpStopThread1of1ForFork0_~lse~0, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0] because there is no mapped edge [2020-11-30 02:07:13,687 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [380] [380] L750-->BCSP_PnpStopEXIT: Formula: (and (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1299501370 |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1299501370|) (= |BCSP_PnpStopThread1of1ForFork0_#res.base_Out1299501370| 0) (= ~stopped~0_Out1299501370 1) (not (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1299501370 0)) (= |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1299501370| 0)) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1299501370|} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1299501370, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1299501370|, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out1299501370|, ~stopped~0=~stopped~0_Out1299501370, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1299501370|} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] because there is no mapped edge [2020-11-30 02:07:13,744 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_361aac29-8a50-4d84-a843-5664c38bd178/bin/utaipan/witness.graphml [2020-11-30 02:07:13,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:07:13,746 INFO L168 Benchmark]: Toolchain (without parser) took 6261.05 ms. Allocated memory was 79.7 MB in the beginning and 132.1 MB in the end (delta: 52.4 MB). Free memory was 45.6 MB in the beginning and 59.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:13,747 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 55.1 MB in the beginning and 55.1 MB in the end (delta: 23.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:07:13,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.85 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 45.4 MB in the beginning and 58.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:13,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.08 ms. Allocated memory is still 100.7 MB. Free memory was 58.2 MB in the beginning and 56.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:13,749 INFO L168 Benchmark]: Boogie Preprocessor took 28.55 ms. Allocated memory is still 100.7 MB. Free memory was 56.1 MB in the beginning and 54.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:07:13,750 INFO L168 Benchmark]: RCFGBuilder took 905.09 ms. Allocated memory is still 100.7 MB. Free memory was 54.6 MB in the beginning and 76.3 MB in the end (delta: -21.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:13,751 INFO L168 Benchmark]: TraceAbstraction took 4475.71 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 75.7 MB in the beginning and 62.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:13,751 INFO L168 Benchmark]: Witness Printer took 70.38 ms. Allocated memory is still 132.1 MB. Free memory was 62.7 MB in the beginning and 59.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:13,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 55.1 MB in the beginning and 55.1 MB in the end (delta: 23.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 726.85 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 45.4 MB in the beginning and 58.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.08 ms. Allocated memory is still 100.7 MB. Free memory was 58.2 MB in the beginning and 56.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.55 ms. Allocated memory is still 100.7 MB. Free memory was 56.1 MB in the beginning and 54.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 905.09 ms. Allocated memory is still 100.7 MB. Free memory was 54.6 MB in the beginning and 76.3 MB in the end (delta: -21.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4475.71 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 75.7 MB in the beginning and 62.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. * Witness Printer took 70.38 ms. Allocated memory is still 132.1 MB. Free memory was 62.7 MB in the beginning and 59.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2031 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 97 PlacesBefore, 18 PlacesAfterwards, 100 TransitionsBefore, 16 TransitionsAfterwards, 2700 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 29 ConcurrentYvCompositions, 5 ChoiceCompositions, 120 TotalNumberOfCompositions, 3127 MoverChecksTotal - CounterExampleResult [Line: 683]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L755] 0 pthread_t t; [L756] 0 pendingIo = 1 [L757] 0 stoppingFlag = 0 [L758] 0 stoppingEvent = 0 [L759] 0 stopped = 0 [L760] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L734] 0 int status; [L703] 0 int lsf = stoppingFlag; [L705] COND FALSE 0 !(\read(lsf)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L744] 1 stoppingFlag = 1 [L725] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L709] 0 int lp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L735] 0 status = BCSP_IoIncrement() VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L736] COND TRUE 0 status == 0 [L689] COND TRUE 0 !(cond) [L683] COND FALSE 0 !(0) [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 47 SDtfs, 17 SDslu, 21 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...