./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/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 0.2.0-7b2dab5 [2020-12-09 16:47:23,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:47:23,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:47:23,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:47:23,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:47:23,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:47:23,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:47:23,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:47:23,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:47:23,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:47:23,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:47:23,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:47:23,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:47:23,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:47:23,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:47:23,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:47:23,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:47:23,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:47:23,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:47:23,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:47:23,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:47:23,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:47:23,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:47:23,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:47:23,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:47:23,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:47:23,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:47:23,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:47:23,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:47:23,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:47:23,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:47:23,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:47:23,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:47:23,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:47:23,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:47:23,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:47:23,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:47:23,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:47:23,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:47:23,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:47:23,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:47:23,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:47:23,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:47:23,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:47:23,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:47:23,143 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:47:23,143 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:47:23,143 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:47:23,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:47:23,143 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:47:23,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:47:23,143 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:47:23,143 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:47:23,144 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:47:23,144 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:47:23,144 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:47:23,144 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:47:23,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:47:23,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:47:23,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:47:23,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:47:23,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:47:23,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:47:23,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:47:23,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:47:23,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:47:23,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:47:23,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:47:23,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:47:23,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:47:23,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:47:23,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:47:23,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:47:23,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:47:23,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:47:23,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:47:23,146 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:47:23,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:47:23,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:47:23,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:47:23,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:47:23,147 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_ff6f5b0a-cd07-42b1-84c9-35af60aea621/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f482efddcbed4494444cc90149347b5e59bc608 [2020-12-09 16:47:23,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:47:23,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:47:23,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:47:23,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:47:23,356 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:47:23,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/../../sv-benchmarks/c/pthread-lit/qw2004-2.i [2020-12-09 16:47:23,398 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/data/7edbfc1b3/b42bca362733470986036cc5b5daeb99/FLAG139e26026 [2020-12-09 16:47:23,815 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:47:23,816 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/sv-benchmarks/c/pthread-lit/qw2004-2.i [2020-12-09 16:47:23,826 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/data/7edbfc1b3/b42bca362733470986036cc5b5daeb99/FLAG139e26026 [2020-12-09 16:47:23,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/data/7edbfc1b3/b42bca362733470986036cc5b5daeb99 [2020-12-09 16:47:23,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:47:23,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:47:23,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:47:23,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:47:23,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:47:23,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:47:23" (1/1) ... [2020-12-09 16:47:23,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c41d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:23, skipping insertion in model container [2020-12-09 16:47:23,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:47:23" (1/1) ... [2020-12-09 16:47:23,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:47:23,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:47:24,070 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/sv-benchmarks/c/pthread-lit/qw2004-2.i[30003,30016] [2020-12-09 16:47:24,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:47:24,089 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:47:24,115 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/sv-benchmarks/c/pthread-lit/qw2004-2.i[30003,30016] [2020-12-09 16:47:24,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:47:24,195 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:47:24,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24 WrapperNode [2020-12-09 16:47:24,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:47:24,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:47:24,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:47:24,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:47:24,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (1/1) ... [2020-12-09 16:47:24,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (1/1) ... [2020-12-09 16:47:24,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:47:24,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:47:24,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:47:24,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:47:24,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (1/1) ... [2020-12-09 16:47:24,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (1/1) ... [2020-12-09 16:47:24,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (1/1) ... [2020-12-09 16:47:24,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (1/1) ... [2020-12-09 16:47:24,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (1/1) ... [2020-12-09 16:47:24,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (1/1) ... [2020-12-09 16:47:24,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (1/1) ... [2020-12-09 16:47:24,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:47:24,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:47:24,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:47:24,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:47:24,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/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 [2020-12-09 16:47:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-12-09 16:47:24,312 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-12-09 16:47:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 16:47:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 16:47:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:47:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 16:47:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:47:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 16:47:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:47:24,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:47:24,315 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 16:47:24,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:47:24,626 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-09 16:47:24,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:47:24 BoogieIcfgContainer [2020-12-09 16:47:24,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:47:24,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:47:24,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:47:24,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:47:24,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:47:23" (1/3) ... [2020-12-09 16:47:24,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41747c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:47:24, skipping insertion in model container [2020-12-09 16:47:24,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:47:24" (2/3) ... [2020-12-09 16:47:24,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41747c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:47:24, skipping insertion in model container [2020-12-09 16:47:24,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:47:24" (3/3) ... [2020-12-09 16:47:24,636 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-12-09 16:47:24,649 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 16:47:24,649 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:47:24,652 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 16:47:24,653 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 16:47:24,674 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,675 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,675 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,675 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,675 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,675 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,675 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,675 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,676 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,676 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,676 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,676 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,676 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,676 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,677 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,677 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,677 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,677 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,677 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,677 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,678 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,678 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,678 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,678 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,678 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,678 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,679 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,679 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,679 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,679 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,679 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,679 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,680 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,680 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,680 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,680 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,680 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,680 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,681 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,681 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,681 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,681 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,681 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,681 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,682 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,682 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,682 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,682 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,682 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,683 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,683 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,683 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,683 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,683 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,683 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,684 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,684 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,684 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,684 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,684 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,685 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,685 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,685 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,685 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,687 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,687 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,687 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,688 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,688 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,688 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,688 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,688 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,688 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,688 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,689 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,689 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:47:24,691 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 16:47:24,701 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 16:47:24,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:47:24,720 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:47:24,720 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:47:24,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:47:24,721 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:47:24,721 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:47:24,721 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:47:24,721 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:47:24,732 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 16:47:24,734 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 96 transitions, 197 flow [2020-12-09 16:47:24,736 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 96 transitions, 197 flow [2020-12-09 16:47:24,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 197 flow [2020-12-09 16:47:24,775 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2020-12-09 16:47:24,776 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 16:47:24,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 6/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2020-12-09 16:47:24,783 INFO L116 LiptonReduction]: Number of co-enabled transitions 2500 [2020-12-09 16:47:26,894 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-12-09 16:47:27,265 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-12-09 16:47:27,265 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 16:47:27,271 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-12-09 16:47:27,271 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 16:47:27,529 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-12-09 16:47:27,530 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 16:47:27,534 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-12-09 16:47:27,535 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 16:47:27,540 INFO L131 LiptonReduction]: Checked pairs total: 2930 [2020-12-09 16:47:27,540 INFO L133 LiptonReduction]: Total number of compositions: 108 [2020-12-09 16:47:27,544 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2020-12-09 16:47:27,550 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 42 states. [2020-12-09 16:47:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-09 16:47:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 16:47:27,554 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:47:27,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 16:47:27,555 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:47:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:47:27,558 INFO L82 PathProgramCache]: Analyzing trace with hash 12117398, now seen corresponding path program 1 times [2020-12-09 16:47:27,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:47:27,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173385478] [2020-12-09 16:47:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:47:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:47:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:47:27,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173385478] [2020-12-09 16:47:27,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:47:27,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 16:47:27,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041260131] [2020-12-09 16:47:27,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:47:27,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:47:27,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:47:27,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:47:27,706 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-12-09 16:47:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:47:27,725 INFO L93 Difference]: Finished difference Result 38 states and 71 transitions. [2020-12-09 16:47:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:47:27,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 16:47:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:47:27,734 INFO L225 Difference]: With dead ends: 38 [2020-12-09 16:47:27,734 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 16:47:27,735 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 [2020-12-09 16:47:27,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 16:47:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 16:47:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 16:47:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 39 transitions. [2020-12-09 16:47:27,761 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 39 transitions. Word has length 4 [2020-12-09 16:47:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:47:27,762 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 39 transitions. [2020-12-09 16:47:27,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:47:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 39 transitions. [2020-12-09 16:47:27,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 16:47:27,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:47:27,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:47:27,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:47:27,763 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:47:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:47:27,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1529002450, now seen corresponding path program 1 times [2020-12-09 16:47:27,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:47:27,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175662027] [2020-12-09 16:47:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:47:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:47:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:47:27,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175662027] [2020-12-09 16:47:27,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:47:27,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:47:27,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959189101] [2020-12-09 16:47:27,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:47:27,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:47:27,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:47:27,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:47:27,813 INFO L87 Difference]: Start difference. First operand 23 states and 39 transitions. Second operand 3 states. [2020-12-09 16:47:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:47:27,821 INFO L93 Difference]: Finished difference Result 28 states and 43 transitions. [2020-12-09 16:47:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:47:27,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 16:47:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:47:27,822 INFO L225 Difference]: With dead ends: 28 [2020-12-09 16:47:27,822 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 16:47:27,823 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 [2020-12-09 16:47:27,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 16:47:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 16:47:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 16:47:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2020-12-09 16:47:27,826 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 8 [2020-12-09 16:47:27,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:47:27,826 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2020-12-09 16:47:27,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:47:27,826 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2020-12-09 16:47:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 16:47:27,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:47:27,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:47:27,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 16:47:27,827 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:47:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:47:27,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1271192399, now seen corresponding path program 1 times [2020-12-09 16:47:27,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:47:27,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908564378] [2020-12-09 16:47:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:47:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:47:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:47:27,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908564378] [2020-12-09 16:47:27,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:47:27,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:47:27,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718921412] [2020-12-09 16:47:27,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:47:27,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:47:27,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:47:27,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:47:27,871 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand 4 states. [2020-12-09 16:47:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:47:27,883 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-12-09 16:47:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 16:47:27,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 16:47:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:47:27,884 INFO L225 Difference]: With dead ends: 27 [2020-12-09 16:47:27,884 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 16:47:27,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:47:27,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 16:47:27,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-09 16:47:27,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 16:47:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2020-12-09 16:47:27,886 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 10 [2020-12-09 16:47:27,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:47:27,887 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-12-09 16:47:27,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:47:27,887 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-12-09 16:47:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 16:47:27,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:47:27,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:47:27,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 16:47:27,888 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:47:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:47:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1368463667, now seen corresponding path program 2 times [2020-12-09 16:47:27,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:47:27,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455750459] [2020-12-09 16:47:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:47:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 16:47:27,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 16:47:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 16:47:27,922 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 16:47:27,937 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 16:47:27,938 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 16:47:27,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 16:47:27,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:47:27 BasicIcfg [2020-12-09 16:47:27,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:47:27,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:47:27,959 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:47:27,959 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:47:27,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:47:24" (3/4) ... [2020-12-09 16:47:27,961 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 16:47:27,999 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ff6f5b0a-cd07-42b1-84c9-35af60aea621/bin/utaipan/witness.graphml [2020-12-09 16:47:27,999 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:47:28,000 INFO L168 Benchmark]: Toolchain (without parser) took 4161.98 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 70.8 MB in the beginning and 62.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2020-12-09 16:47:28,001 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 100.7 MB. Free memory is still 80.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:47:28,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.30 ms. Allocated memory is still 100.7 MB. Free memory was 70.7 MB in the beginning and 69.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2020-12-09 16:47:28,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.40 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 67.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:47:28,002 INFO L168 Benchmark]: Boogie Preprocessor took 17.40 ms. Allocated memory is still 100.7 MB. Free memory was 67.3 MB in the beginning and 66.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:47:28,002 INFO L168 Benchmark]: RCFGBuilder took 379.22 ms. Allocated memory is still 100.7 MB. Free memory was 66.0 MB in the beginning and 40.0 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:47:28,003 INFO L168 Benchmark]: TraceAbstraction took 3326.78 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 78.7 MB in the beginning and 66.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:47:28,003 INFO L168 Benchmark]: Witness Printer took 40.48 ms. Allocated memory is still 121.6 MB. Free memory was 66.9 MB in the beginning and 62.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:47:28,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 100.7 MB. Free memory is still 80.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.30 ms. Allocated memory is still 100.7 MB. Free memory was 70.7 MB in the beginning and 69.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.40 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 67.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.40 ms. Allocated memory is still 100.7 MB. Free memory was 67.3 MB in the beginning and 66.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 379.22 ms. Allocated memory is still 100.7 MB. Free memory was 66.0 MB in the beginning and 40.0 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3326.78 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 78.7 MB in the beginning and 66.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Witness Printer took 40.48 ms. Allocated memory is still 121.6 MB. Free memory was 66.9 MB in the beginning and 62.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1897 VarBasedMoverChecksPositive, 50 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 94 PlacesBefore, 18 PlacesAfterwards, 96 TransitionsBefore, 16 TransitionsAfterwards, 2500 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 4 ChoiceCompositions, 108 TotalNumberOfCompositions, 2930 MoverChecksTotal - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_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; 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; [L726] 1 pending = dec() VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 [L748] 1 int lse = stoppingEvent; [L705] COND FALSE 0 !(\read(lsf)) [L709] 0 int lp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L735] 0 status = BCSP_IoIncrement() [L686] COND FALSE 1 !(!cond) [L751] 1 stopped = 1 [L752] 1 return 0; [L736] COND TRUE 0 status == 0 [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 44 SDtfs, 22 SDslu, 26 SDs, 0 SdLazy, 13 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 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...