./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2013_variant-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_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/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 f51b9b30e22bffeec62b3fe2d58bec4819b7724c ...................................................................................................................................................................................................................................................................................................................................................................................... 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 05:25:25,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:25:25,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:25:25,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:25:25,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:25:25,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:25:25,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:25:25,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:25:25,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:25:25,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:25:25,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:25:25,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:25:25,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:25:25,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:25:25,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:25:25,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:25:25,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:25:25,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:25:25,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:25:25,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:25:25,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:25:25,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:25:25,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:25:25,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:25:25,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:25:25,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:25:25,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:25:25,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:25:25,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:25:25,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:25:25,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:25:25,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:25:25,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:25:25,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:25:25,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:25:25,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:25:25,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:25:25,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:25:25,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:25:25,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:25:25,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:25:25,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:25:25,170 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:25:25,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:25:25,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:25:25,175 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:25:25,175 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:25:25,175 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:25:25,176 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:25:25,176 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:25:25,176 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:25:25,176 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:25:25,176 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:25:25,176 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:25:25,176 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:25:25,176 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:25:25,177 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:25:25,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:25:25,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:25:25,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:25:25,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:25:25,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:25:25,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:25:25,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:25:25,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:25:25,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:25:25,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:25:25,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:25:25,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:25:25,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:25:25,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:25:25,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:25:25,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:25:25,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:25:25,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:25:25,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:25:25,179 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:25:25,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:25:25,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:25:25,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:25:25,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:25:25,180 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_a7dc4ba6-c378-4601-bc0b-4c07950787e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51b9b30e22bffeec62b3fe2d58bec4819b7724c [2020-12-09 05:25:25,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:25:25,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:25:25,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:25:25,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:25:25,380 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:25:25,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/../../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2020-12-09 05:25:25,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/data/7ce8a9de8/c128e91277914ca0ae23cb0b4c46b6ca/FLAG6a77a6f77 [2020-12-09 05:25:25,822 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:25:25,822 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2020-12-09 05:25:25,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/data/7ce8a9de8/c128e91277914ca0ae23cb0b4c46b6ca/FLAG6a77a6f77 [2020-12-09 05:25:26,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/data/7ce8a9de8/c128e91277914ca0ae23cb0b4c46b6ca [2020-12-09 05:25:26,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:25:26,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:25:26,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:25:26,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:25:26,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:25:26,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f91bd6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26, skipping insertion in model container [2020-12-09 05:25:26,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:25:26,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:25:26,505 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_a7dc4ba6-c378-4601-bc0b-4c07950787e6/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i[30003,30016] [2020-12-09 05:25:26,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:25:26,526 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:25:26,559 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_a7dc4ba6-c378-4601-bc0b-4c07950787e6/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i[30003,30016] [2020-12-09 05:25:26,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:25:26,622 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:25:26,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26 WrapperNode [2020-12-09 05:25:26,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:25:26,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:25:26,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:25:26,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:25:26,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:25:26,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:25:26,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:25:26,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:25:26,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... [2020-12-09 05:25:26,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:25:26,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:25:26,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:25:26,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:25:26,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/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 05:25:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-12-09 05:25:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-12-09 05:25:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-09 05:25:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-09 05:25:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 05:25:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:25:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 05:25:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:25:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:25:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:25:26,740 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 05:25:26,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:25:26,921 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-09 05:25:26,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:26 BoogieIcfgContainer [2020-12-09 05:25:26,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:25:26,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:25:26,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:25:26,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:25:26,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:25:26" (1/3) ... [2020-12-09 05:25:26,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffbd62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:25:26, skipping insertion in model container [2020-12-09 05:25:26,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:26" (2/3) ... [2020-12-09 05:25:26,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffbd62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:25:26, skipping insertion in model container [2020-12-09 05:25:26,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:26" (3/3) ... [2020-12-09 05:25:26,927 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-2.i [2020-12-09 05:25:26,938 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 05:25:26,938 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:25:26,940 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:25:26,941 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 05:25:26,962 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,962 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,962 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,962 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,963 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,963 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,965 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,965 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,965 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,965 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,966 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,966 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,966 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,966 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,967 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,967 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,967 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,968 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,968 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,968 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,972 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,972 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,973 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,973 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,973 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,977 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,978 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,978 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:25:26,979 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 05:25:26,987 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 05:25:27,001 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:25:27,001 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:25:27,001 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:25:27,001 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:25:27,001 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:25:27,001 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:25:27,001 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:25:27,001 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:25:27,009 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 05:25:27,010 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 66 transitions, 142 flow [2020-12-09 05:25:27,012 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 66 transitions, 142 flow [2020-12-09 05:25:27,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 66 transitions, 142 flow [2020-12-09 05:25:27,042 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2020-12-09 05:25:27,042 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 05:25:27,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 76 events. 4/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-12-09 05:25:27,047 INFO L116 LiptonReduction]: Number of co-enabled transitions 742 [2020-12-09 05:25:28,935 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-12-09 05:25:29,253 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2020-12-09 05:25:29,534 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-12-09 05:25:29,870 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-12-09 05:25:29,993 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-09 05:25:29,994 INFO L131 LiptonReduction]: Checked pairs total: 665 [2020-12-09 05:25:29,994 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-12-09 05:25:29,998 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-12-09 05:25:30,004 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-12-09 05:25:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-12-09 05:25:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 05:25:30,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:30,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 05:25:30,009 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 05:25:30,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:30,012 INFO L82 PathProgramCache]: Analyzing trace with hash 257239, now seen corresponding path program 1 times [2020-12-09 05:25:30,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:30,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537321800] [2020-12-09 05:25:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:30,148 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 05:25:30,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537321800] [2020-12-09 05:25:30,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:30,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 05:25:30,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133025159] [2020-12-09 05:25:30,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:25:30,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:30,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:25:30,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:25:30,163 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-12-09 05:25:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:30,184 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2020-12-09 05:25:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:25:30,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 05:25:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:30,191 INFO L225 Difference]: With dead ends: 40 [2020-12-09 05:25:30,191 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 05:25:30,192 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 05:25:30,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 05:25:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-12-09 05:25:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 05:25:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-12-09 05:25:30,215 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-12-09 05:25:30,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:30,215 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-12-09 05:25:30,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:25:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-12-09 05:25:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:25:30,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:30,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:25:30,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:25:30,216 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-09 05:25:30,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:30,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1313687711, now seen corresponding path program 1 times [2020-12-09 05:25:30,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:30,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662965420] [2020-12-09 05:25:30,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:25:30,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:25:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:25:30,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:25:30,272 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 05:25:30,272 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 05:25:30,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:25:30,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:25:30 BasicIcfg [2020-12-09 05:25:30,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:25:30,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:25:30,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:25:30,293 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:25:30,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:26" (3/4) ... [2020-12-09 05:25:30,294 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 05:25:30,327 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a7dc4ba6-c378-4601-bc0b-4c07950787e6/bin/utaipan/witness.graphml [2020-12-09 05:25:30,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:25:30,328 INFO L168 Benchmark]: Toolchain (without parser) took 4096.01 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 91.3 MB in the beginning and 91.5 MB in the end (delta: -197.0 kB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:30,328 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory was 51.9 MB in the beginning and 51.8 MB in the end (delta: 60.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:25:30,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.18 ms. Allocated memory is still 113.2 MB. Free memory was 91.1 MB in the beginning and 61.8 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:30,329 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.84 ms. Allocated memory is still 113.2 MB. Free memory was 61.8 MB in the beginning and 59.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:30,330 INFO L168 Benchmark]: Boogie Preprocessor took 26.92 ms. Allocated memory is still 113.2 MB. Free memory was 59.9 MB in the beginning and 92.4 MB in the end (delta: -32.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:30,330 INFO L168 Benchmark]: RCFGBuilder took 236.84 ms. Allocated memory is still 113.2 MB. Free memory was 92.4 MB in the beginning and 72.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:30,330 INFO L168 Benchmark]: TraceAbstraction took 3369.28 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 71.5 MB in the beginning and 94.6 MB in the end (delta: -23.1 MB). Peak memory consumption was 468.1 kB. Max. memory is 16.1 GB. [2020-12-09 05:25:30,331 INFO L168 Benchmark]: Witness Printer took 34.63 ms. Allocated memory is still 136.3 MB. Free memory was 94.6 MB in the beginning and 91.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:30,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory was 51.9 MB in the beginning and 51.8 MB in the end (delta: 60.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 389.18 ms. Allocated memory is still 113.2 MB. Free memory was 91.1 MB in the beginning and 61.8 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.84 ms. Allocated memory is still 113.2 MB. Free memory was 61.8 MB in the beginning and 59.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.92 ms. Allocated memory is still 113.2 MB. Free memory was 59.9 MB in the beginning and 92.4 MB in the end (delta: -32.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 236.84 ms. Allocated memory is still 113.2 MB. Free memory was 92.4 MB in the beginning and 72.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3369.28 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 71.5 MB in the beginning and 94.6 MB in the end (delta: -23.1 MB). Peak memory consumption was 468.1 kB. Max. memory is 16.1 GB. * Witness Printer took 34.63 ms. Allocated memory is still 136.3 MB. Free memory was 94.6 MB in the beginning and 91.5 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 489 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 69 PlacesBefore, 18 PlacesAfterwards, 66 TransitionsBefore, 12 TransitionsAfterwards, 742 CoEnabledTransitionPairs, 7 FixpointIterations, 27 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 665 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 x; [L698] 0 volatile int n; [L710] 0 pthread_t t1, t2; [L711] 0 int i; [L712] 0 x = 0 [L713] 0 n = __VERIFIER_nondet_int() [L686] COND FALSE 0 !(!cond) [L715] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [n=1, x=0] [L716] 0 i = 0 VAL [n=1, x=0] [L716] COND TRUE 0 i < n [L717] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [arg={0:0}, n=1, x=0] [L704] 2 int t; [L705] 2 t = x [L706] 2 x = t + 1 [L707] 2 return 0; [L689] COND TRUE 1 !(cond) [L690] 1 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, n=1, t=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 7 SDtfs, 7 SDslu, 2 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 1 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...